CN113636899A - Organic waste aerobic composting stink in-situ emission reduction method - Google Patents

Organic waste aerobic composting stink in-situ emission reduction method Download PDF

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CN113636899A
CN113636899A CN202111114569.7A CN202111114569A CN113636899A CN 113636899 A CN113636899 A CN 113636899A CN 202111114569 A CN202111114569 A CN 202111114569A CN 113636899 A CN113636899 A CN 113636899A
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reduced
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composting
concentration
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丁颖
熊骏生
魏姣皎
陈君晓
赖余港
张嘉仪
徐贤雯
吕娅
朱维琴
张杭君
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Hangzhou Normal University
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    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

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Abstract

The invention discloses an organic waste aerobic compost stink in-situ emission reduction method. Firstly, mixing organic garbage and auxiliary materials into a mixed material, adding decomposed compost to obtain a compost material, and filling the compost material into a forced ventilation static compost reactor for composting; monitoring the concentration of volatile malodorous gases released in the composting process by adopting GC-MS every day, and recording process parameters as the basis of the next composting process if the monitored concentration of various malodorous gases is lower than the threshold of olfactory concentration of the gases; if not, in the next batch of composting operation, changing the weight ratio of the organic garbage and the auxiliary materials, and/or adjusting the carbon-nitrogen ratio of the composting materials, and/or changing the composting conditions, and/or adding biomass charcoal into the mixed materials, and/or adding a microbial deodorant into the mixed materials. The method of the invention has a regulation and control function on the control of the specific odor pollution of the garbage compost, and has good functions on environmental protection and sustainable development.

Description

Organic waste aerobic composting stink in-situ emission reduction method
Technical Field
The invention relates to a method for controlling malodorous pollution, in particular to a method for in-situ emission reduction of malodorous gas in aerobic composting of organic garbage, belonging to the field of malodorous gas pollution treatment in the process of recycling solid wastes.
Background
Along with the rapid development of rural economy in China and the continuous improvement of the living standard of residents, the rural population is greatly reduced, but the generation amount of rural domestic garbage is still increased day by day, the situation of 'garbage village surrounding' is severe, the pollution to the rural environment is caused to a great extent, and the garbage can become a healthy invisible killer for farmers once. In recent years, classification and reduction recycling treatment work of rural domestic garbage is carried out in a mode of pushing whole villages and towns, the rural domestic garbage is classified and is transported and treated according to different classification results, a terminal treatment technology which mainly takes mechanical rapid composting and sunshine house composting and takes incineration equipment, hermetia illucens, methane anaerobic fermentation and the like as assistance is pushed, and the rural environment is greatly improved and promoted. Although the research on the garbage aerobic composting technology has been carried out with breakthrough in recent years, the problem of odor pollution in the composting process has not been paid enough attention. Along with the improvement of the requirements of rural residents on the quality of living environment and the acceleration of the construction process of new rural areas, the problem of odor pollution generated in the composting process is increasingly prominent.
The malodorous substances produced by the composting process mainly comprise nitrogen/sulfur compounds, volatile fatty acids, aromatics, aldehydes/ketones/alcohols, terpenoids and other volatile organic compounds. Research shows that the malodor, as an organoleptic pollutant, is affected by complex factors such as physiological habits, subjective feelings, climatic conditions and most important interaction of malodorous substances, endangers human respiratory, circulatory, endocrine and nervous systems, is liable to cause dysfunction in the regulation of excitation and inhibition of cerebral cortex, affects mental state and mental activities of brain, and causes various toxicities, carcinogenesis and even death. The odor pollution seriously influences the normal work, life and human health of garbage disposal workers and surrounding villagers, and becomes a strong unstable factor of the society in the surrounding areas. If not controlled, the normal recycling treatment of the rural domestic garbage is seriously influenced, and even the sustainable development of rural economy, society and environment and the construction process of new rural areas can be restricted.
At the present stage, an effective technology and a standard for controlling the odor pollution in the garbage composting process are lacked, and methods such as natural ventilation or activated carbon adsorption are practically and generally adopted. Some researchers remove compost gas by using a biofilter after collecting the compost gas, and although the removal effect is good, the problems of more equipment investment, high cost, poor economy, difficult operation and management and the like exist, so that the method is not suitable for actual situations in vast rural areas. Therefore, the research and development of the efficient and low-cost rural organic waste aerobic composting stink pollution in-situ emission reduction method is particularly urgent.
In order to realize the in-situ emission reduction of malodorous gas in the composting process, the aspects of compost material proportion, additional substances, process parameters and the like need to be optimized and controlled. First, the search for optimal composting fermentation conditions should be a determinant of malodour source reduction. Secondly, there is a necessary trend to develop efficient, economical composting additives with low risk of potential environmental pollution to reduce malodour production during composting. Finally, structural diversity and space-time distribution characteristics of functional microbial populations in the composting process are ascertained, the mutual relation between the odor source reduction effect and the functional microbial population dynamics in the garbage composting process is clarified, and theoretical basis and technical support can be provided for regulating and controlling the odor in-situ emission reduction effect in the garbage composting process.
Disclosure of Invention
The invention aims to solve the problem of malodorous pollution of aerobic composting of organic garbage and provides an in-situ emission reduction method for malodorous gas of aerobic composting of organic garbage.
The method specifically comprises the following steps:
uniformly mixing 30-80 parts by weight of organic garbage and 20-40 parts by weight of auxiliary materials to obtain a mixed material; the organic garbage is the organic part in the domestic garbage, and the water content is more than 85%; the auxiliary materials are one or more of sawdust, rice hulls, straws, bran, medicine residues and mushroom residues, and the water content is less than 20%;
adding 0.1-1.0 part by weight of decomposed compost into the mixed material in the step (2), and uniformly mixing to obtain compost material; the decomposed compost is odorless organic garbage compost which is fermented and decomposed at high temperature, and the water content is 35-45%; the mass ratio of the total carbon content to the total nitrogen content of the compost material, namely the carbon-nitrogen ratio is 25-35: 1;
and (3) filling the compost materials into a forced ventilation static compost reactor for composting, wherein the composting conditions are as follows: initial water content of 60-70% and ventilation capacity of 0.5-0.75L/kg-1DM·min-1；
And (4) monitoring the concentration of volatile malodorous gases released in the composting process every day by adopting a Gas chromatography-mass spectrometer (GC-MS), wherein the volatile malodorous gases comprise nitrogen-containing malodorous gases, sulfur-containing malodorous gases and carbon-containing malodorous gases:
if the monitored concentration of various malodorous gases is lower than the threshold value of the olfactory concentration of the malodorous gases, recording process parameters as the basis of the next composting process;
if the monitored concentration of each malodorous gas is not lower than the threshold value of the olfactory concentration of the malodorous gas, executing the step (5);
step (5) in the next batch of composting operation, selecting one or more of the following operations:
A. changing the weight ratio of the organic garbage to the auxiliary materials within the proportion range of the organic garbage to the auxiliary materials in the mixed materials in the step (1);
B. adjusting the carbon-nitrogen ratio of the compost material in the step (2);
C. varying the initial water content and/or aeration within the range of composting conditions of step (3);
D. adding 0.1-5 parts by weight of biomass charcoal into the mixed material, and uniformly mixing; the biomass charcoal is one or more of charcoal, bamboo charcoal and rice husk charcoal;
E. adding 0.05-0.5 part by weight of microbial deodorant into the mixed material, and uniformly mixing; the microbial deodorant comprises: one or more microbial agents selected from the group consisting of Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Methanochaeta (Methanosaeta), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus) and Sphingobacterium (Sphingobacterium) associated with the removal of nitrogenous malodour, Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Micrococcus (Hyphomicrobium), Azotobacter (Azoarculus), Geobactrum (Geobactrum), Cladonia (Thauera), Blastochlorochloros (Blastochlorochloros), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas associated with the removal of carbonaceous malodour;
and (6) in different composting operations, repeatedly executing the step (5), monitoring the concentration of volatile malodorous gas released in the composting process every day by adopting different operations every time until the monitored concentration of various malodorous gases is lower than that released in the previous batch, and recording process parameters as the basis of the subsequent composting process.
The beneficial effects of the invention include:
(1) the method optimizes and regulates the organic waste composting process from three aspects of composting material proportion, additional substances, process parameters and the like, seeks the optimal composting fermentation condition and process parameters, and can realize the in-situ emission reduction of malodorous gas in the composting process;
(2) the compost additive (biomass charcoal) used by the method has wide sources, is efficient and economic and has extremely low potential pollution risk to the environment;
(3) from the perspective of building resource-saving, environment-friendly society and sustainable development and combining the practical situation of garbage composting treatment, the biological control technology is a strategic selection and a practical need for solving the odor pollution in the composting process. According to the method, according to the early-stage research result and the actual requirement, the proper types and the proper amount of the deodorizing bactericide are added into the garbage aerobic compost, so that the method can play a role in regulating and controlling the specific odor pollution of the garbage compost.
(4) Compared with the compost stink end control technology, the method can realize resource treatment of rural organic garbage, can efficiently reduce the stink concentration in situ, reduces the influence of stink gas on the surrounding human living environment, does not need to invest additional stink pollution treatment equipment, reduces the treatment cost and the operation management cost, and has good economy, applicability, practicability and advancement.
(5) The method has the characteristics of being suitable for the foul pollution in the rural organic waste aerobic composting process, forms a scientific management system for controlling the foul pollution and protecting the ecological environment in the rural organic waste composting process, can comprehensively solve the problem of the foul pollution in the rural organic waste composting process, guarantee the ecological safety and the body health of surrounding villagers, improve the living environment conditions of people, greatly improve the living quality of people, have remarkable environmental and social benefits, and have good effect on ensuring the sustainable development of the environment-friendly society.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples:
the embodiment described is only an example of the implementation form of the inventive concept, and the protection scope of the invention should not be considered as being limited to the specific form set forth in the embodiment, and the protection scope of the invention is equivalent to the technical means that can be conceived by those skilled in the art according to the inventive concept.
Example 1:
30kg of organic domestic garbage in a certain village and town of Hangzhou is taken, 40kg of sawdust and 0.1kg of decomposed compost are added and evenly mixed, the initial water content of a pile body is adjusted to be 60%, the carbon-nitrogen ratio is adjusted to be 25, and the ventilation capacity is adjusted to be 0.5 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. Meanwhile, GC-MS is adopted to continuously monitor the types and the odor generated in the composting processThe concentration results show that 15 kinds of malodorous gases including nitrogen-containing malodorous gas (ammonia gas), sulfur-containing malodorous gas (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), and carbon-containing malodorous gas (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 123.60 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 94.00 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 10.60 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The highest release concentration of the dimethyl sulfide is 23.60 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 3.76 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 1.66mg m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 22.46 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 5.66 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 0.1kg of charcoal and 0.05kg of microbial deodorant NSC-1 are selectively added, mixed uniformly, and the ventilation amount is adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorant agent NSC-1 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 13 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene and ethanol are monitored in the composting process. Wherein ammoniaThe maximum gas release concentration is reduced to 85.20 mg.m-3The emission is reduced by 31.1 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 63.60mg m-3The emission is reduced by 32.3 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 7.90 mg.m-3The emission is reduced by 25.5 percent compared with the emission of the previous batch; the maximum release concentration of the dimethyl sulfide is reduced to 16.30mg m-3The emission is reduced by 30.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 2.91 mg.m-3The emission is reduced by 22.6 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 1.15 mg.m-3The emission is reduced by 30.7 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of the dimethylbenzene is 15.10 mg.m-3The emission is reduced by 32.8 percent compared with the emission of the previous batch; the maximum release concentration of the ethylbenzene is reduced to 4.10 mg.m-3The emission is reduced by 27.6 percent compared with the previous batch.
Example 2:
30kg of organic domestic garbage in one village and town of Hangzhou is taken, 40kg of rice hull and 0.5kg of decomposed compost are added and evenly mixed, the initial water content of a pile body is adjusted to be 65%, the carbon-nitrogen ratio is adjusted to be 30, and the ventilation capacity is adjusted to be 0.625 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 117.30 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 95.60 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 11.20 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 22.90 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 3.56 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 1.71mg m-3Above its olfactory thresholdValue 1.3554mg · m-3(ii) a The highest release concentration of xylene is 21.76 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 5.38 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 2.5kg of bamboo charcoal and 0.275kg of microbial deodorant NSC-2 are selectively added, mixed uniformly, and the ventilation volume is adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorizing agent NSC-2 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chlorobium (Chloroflexus), Thiobacillus (Thiobacillus), Thermomyces (Hyphomicrobium), Blastochlorsis (Blastochlorsis), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 75.4 mg.m-3The emission is reduced by 35.7 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 54.20mg m-3The emission is reduced by 43.3 percent compared with the previous batch; the highest release concentration of the methyl mercaptan is reduced to 7.96mg m-3The emission is reduced by 28.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 14.86mg m-3The emission is reduced by 35.1 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 2.61mg m-3The emission is reduced by 26.7 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 1.03 mg.m-3The emission is reduced by 39.8 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of xylene is 13.14 mg.m-3The emission is reduced by 39.6 percent compared with the emission of the previous batch; the highest ethylbenzene release concentration is reduced to 3.58mg m-3The emission is reduced by 33.5 percent compared with the previous batch.
Example 3:
taking 30kg of organic domestic garbage in a certain village and town of Hangzhou, adding 40kg of straws and 1.0kg of decomposed compost, uniformly mixing, and adjusting the initial water content of a pile body to 70%, the carbon-nitrogen ratio to 35 and the ventilation volume to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 109.23 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 92.72 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 10.89 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 21.25 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 3.13 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 1.85 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 23.72 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 6.01 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 5.0kg of rice husk carbon and 0.5kg of microbial deodorant NSC-3 are selectively added, uniformly mixed and composted in a static forced ventilation mode. The deodorant agent NSC-3 is selected from Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), and Micromyces (Hyphomicrobium)A mixed microbial agent of the genera Geobacter (Geobacter), Tanaerobacter (Thauera), Blastochlorsis (Blastochlorsis), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the maximum release concentration of ammonia gas is reduced to 52.60 mg.m-3The emission is reduced by 51.8 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 41.91mg m-3The emission is reduced by 54.8 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 4.69 mg.m-3The emission is reduced by 56.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 11.38mg m-3The emission is reduced by 46.4 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 1.16mg m-3The emission is reduced by 62.9 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 0.72 mg.m-3The emission is reduced by 61.1 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of xylene is 9.41 mg.m-3The emission is reduced by 60.3 percent compared with the emission of the previous batch; the highest ethylbenzene release concentration is reduced to 2.26 mg.m-3The emission is reduced by 62.4 percent compared with the emission of the previous batch.
Example 4:
30kg of organic domestic garbage of a certain village and town of Hangzhou is taken, 40kg of bran and 0.1kg of decomposed compost are added and evenly mixed, the initial water content of a heap body is adjusted to be 60%, the carbon-nitrogen ratio is adjusted to be 25, and the ventilation capacity is adjusted to be 0.5 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 131.23 mg.m-3Above its olfactive threshold 1.138mgm-3(ii) a The highest release concentration of hydrogen sulfide is 92.15 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 10.83 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 22.59 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 3.47 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 1.53 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 21.33 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 5.39 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 0.1kg of charcoal and 0.05kg of microbial deodorant NSC-1 are selectively added, mixed uniformly, and the ventilation amount is adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorant agent NSC-1 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 13 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 91.7 mg.m-3The emission is reduced by 30.1 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 64.12mg m-3The emission is reduced by 30.4 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 7.58mg m-3The emission is reduced by 30.0 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 14.27mg m-3The emission is reduced by 36.8 percent compared with the emission of the previous batch; dimethyldithioThe high release concentration is reduced to 2.76 mg.m-3The emission is reduced by 20.5 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 1.07 mg.m-3The emission is reduced by 30.1 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of xylene is 14.35 mg.m-3The emission is reduced by 32.7 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 4.02 mg.m-3The emission is reduced by 25.4 percent compared with the previous batch.
Example 5:
30kg of organic domestic garbage in a certain village and town of Hangzhou is taken, 40kg of medicine residues and 0.5kg of decomposed compost are added and evenly mixed, the initial water content of a pile body is adjusted to be 65%, the carbon-nitrogen ratio is adjusted to be 30, and the ventilation capacity is adjusted to be 0.625 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 126.45 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of the hydrogen sulfide is 91.56 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 10.22 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 20.57 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 3.36 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 1.55 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 20.96 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 5.28 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 2.5kg of bamboo is selectively addedMixing charcoal and 0.275kg of microbial deodorant NSC-2, and regulating ventilation amount to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorizing agent NSC-2 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chlorobium (Chloroflexus), Thiobacillus (Thiobacillus), Thermomyces (Hyphomicrobium), Blastochlorsis (Blastochlorsis), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 89.13 mg.m-3The emission is reduced by 29.5 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 69.88mg m-3The emission is reduced by 23.7 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 6.54 mg.m-3The emission is reduced by 36.0 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 15.46 mg.m-3The emission is reduced by 24.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 2.23mg m-3The emission is reduced by 33.6 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 0.92mg m-3The emission is reduced by 40.6 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of the dimethylbenzene is 16.44 mg.m-3The emission is reduced by 21.6 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 4.18 mg.m-3The emission is reduced by 20.8 percent compared with the emission of the previous batch.
Example 6:
taking 30kg of organic domestic garbage in a certain village and town of Hangzhou, adding 40kg of mushroom residue and 1.0kg of decomposed compost, uniformly mixing, and adjusting initial water content of a pile body to 70%, carbon-nitrogen ratio to 35 and ventilation capacity to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, GC-MS is adopted to continuously monitor the malodorous gas generated in the composting processThe species and the concentration of the malodorous gases, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), and carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 111.85 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 96.25 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 11.26 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 22.13 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 3.23 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 2.07 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 23.53 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 6.86 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 5.0kg of rice husk carbon and 0.5kg of microbial deodorant NSC-3 are selectively added, uniformly mixed and composted in a static forced ventilation mode. The deodorant agent NSC-3 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Micromycelium (Hyphomicrobium), Geobacter (Geobacter), Torulopsis (Thauera), Blastochlorus (Blastochlorris), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Coleomonas (Sphingomonas). During the period, GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide and methyl sulfide are monitored in the composting processAlcohol, methyl sulfide, ethanethiol, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene, and ethanol. Wherein the highest release concentration of ammonia gas is reduced to 52.20 mg.m-3The emission is reduced by 53.3 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 42.71mg m-3The emission is reduced by 55.6 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 4.73 mg.m-3The emission is reduced by 58.0 percent compared with the emission of the previous batch; the maximum release concentration of the dimethyl sulfide is reduced to 10.43mg m-3The emission is reduced by 52.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 1.41mg m-3The emission is reduced by 56.3 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 0.82mg m-3The emission is reduced by 60.4 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of xylene is 9.85 mg.m-3The emission is reduced by 58.1 percent compared with the emission of the previous batch; the maximum release concentration of the ethylbenzene is reduced to 2.14 mg.m-3The emission is reduced by 68.8 percent compared with the previous batch.
Example 7:
55kg of organic domestic garbage in a certain village and town of Hangzhou is taken, 30kg of sawdust and 0.5kg of decomposed compost are added and evenly mixed, the initial water content of a pile body is adjusted to be 65%, the carbon-nitrogen ratio is adjusted to be 30, and the ventilation capacity is adjusted to be 0.625 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 223.20 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 120.70 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 13.90 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The highest release concentration of the dimethyl sulfide is 35.80 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 5.42 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 2.71mg m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the dimethylbenzene is 34.78 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 8.35 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, the initial water content is selectively adjusted to 60 percent, the C/N is adjusted to 25 percent, and the ventilation is selectively adjusted to 0.75L-kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 13 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 196.67 mg.m-3The emission is reduced by 11.9 percent compared with the emission of the previous batch; the highest release concentration of hydrogen sulfide is reduced to 103.6mg m-3The emission is reduced by 14.2 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 12.9mg m-3The emission is reduced by 7.2 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 31.3 mg.m-3The emission is reduced by 12.6 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 4.21mg m-3The emission is reduced by 22.3 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 2.25mg m-3The emission is reduced by 17.0 percent compared with the emission of the previous batch; the highest release concentration of xylene is 29.1 mg.m-3The emission is reduced by 16.3 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 7.1 mg.m-3The emission is reduced by 15.0 percent compared with the emission of the previous batch.
Example 8:
taking 55kg of organic domestic garbage of a certain village and town of Hangzhou, adding 30kg of rice hull and 1.0kg of decomposed compost, uniformly mixing, and adjusting the initial water content of a pile body to 70%, the carbon-nitrogen ratio to 35 and the air flow to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. Meanwhile, GC-MS is adopted to continuously monitor the type and concentration of malodorous gas generated in the composting processAnd the results show that 15 kinds of malodorous gases including nitrogen-containing malodorous gas (ammonia gas), sulfur-containing malodorous gas (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), and carbon-containing malodorous gas (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 207.30 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 103.60 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 12.40 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 32.30 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 4.96 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 2.42mg m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the dimethylbenzene is 31.56 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 6.78 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 5.0kg of rice husk carbon is selectively added, the mixture is uniformly mixed, the initial water content is adjusted to 60 percent, the C/N is adjusted to 25 percent, and the composting is carried out by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 143.60 mg.m-3The emission is reduced by 30.7 percent compared with the emission of the previous batch; the highest release concentration of hydrogen sulfide is reduced to 70.40 mg.m-3The emission is reduced by 32.0 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 7.96mg m-3The emission is reduced by 35.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 21.72 mg.m-3The emission is reduced by 32.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to3.11mg·m-3The emission is reduced by 37.3 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 1.53mg m-3The emission is reduced by 36.8 percent compared with the emission of the previous batch; the highest release concentration of xylene is 23.14 mg.m-3The emission is reduced by 26.7 percent compared with the emission of the previous batch; the maximum release concentration of the ethylbenzene is reduced to 4.36 mg.m-3The emission is reduced by 35.7 percent compared with the emission of the previous batch.
Example 9:
taking 55kg of organic domestic garbage in a certain village and town of Hangzhou, adding 30kg of straws and 0.1kg of decomposed compost, uniformly mixing, adjusting the initial water content of a pile body to 60%, the carbon-nitrogen ratio to 25 and the ventilation volume to 0.5 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 237.29 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 125.32 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 14.13 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The highest release concentration of the dimethyl sulfide is 36.43 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 5.66 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 2.84 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the xylene is 36.27 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 8.47 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 0.05kg of microbial deodorant NSC-1 was added, mixed well, and the aeration rate was selectively adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorant agent NSC-1 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 168.7 mg.m-3The emission is reduced by 28.9 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 89.38mg m-3The emission is reduced by 28.7 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 9.98 mg.m-3The emission is reduced by 29.4 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 24.48mg m-3The emission is reduced by 32.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 3.76 mg.m-3The emission is reduced by 33.6 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 1.77mg m-3The emission is reduced by 37.7 percent compared with the emission of the previous batch; the highest release concentration of xylene is 26.67 mg.m-3The emission is reduced by 26.5 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 5.56 mg.m-3The emission is reduced by 34.4 percent compared with the previous batch.
Example 10:
55kg of organic domestic garbage of a certain village and town of Hangzhou is taken, 30kg of bran and 0.5kg of decomposed compost are added and evenly mixed, the initial water content of a pile body is adjusted to be 65%, the carbon-nitrogen ratio is adjusted to be 30, and the ventilation capacity is adjusted to be 0.625 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene and dimethyl disulfide) and the like are monitored in the composting processXylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol, and acetaldehyde). Wherein the highest release concentration of ammonia gas is 210.30 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 105.20 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 12.80 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 34.60 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 5.03 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 2.56 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the dimethylbenzene is 32.23 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 6.82 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 2.5kg of bamboo charcoal is selectively added, uniformly mixed, adjusted to initial water content of 60%, C/N of 25 and ventilation volume of 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 13 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 143.70 mg.m-3The emission is reduced by 31.7 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 72.10 mg.m-3The emission is reduced by 31.5 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 8.62mg m-3The emission is reduced by 32.7 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 24.10 mg.m-3The emission is reduced by 30.3 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 3.22mg m-3The emission is reduced by 36.0 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 1.67mg m-3The emission is reduced by 34.8 percent compared with the emission of the previous batch; IIThe highest release concentration of toluene is 23.80 mg.m-3The emission is reduced by 26.2 percent compared with the emission of the previous batch; the maximum ethylbenzene release concentration is reduced to 4.43 mg.m-3The emission is reduced by 35.0 percent compared with the emission of the previous batch.
Example 11:
taking 55kg of organic domestic garbage in one village and town of Hangzhou, adding 30kg of medicine residues and 1.0kg of decomposed compost, uniformly mixing, and adjusting initial water content of a pile body to 70%, carbon-nitrogen ratio to 35 and ventilation capacity to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 208.50 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 101.30 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 11.90 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 30.50 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 4.88 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 2.47mg m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the xylene is 29.53 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 6.85 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 0.5kg of microbial deodorant NSC-3 is selectively added, the mixture is uniformly mixed, the initial water content is adjusted to 60 percent, the C/N is adjusted to 25 percent, and the composting is carried out by adopting a static forced ventilation mode. The deodorant agent NSC-3 is selected from Nitrosospira, Nitrosomonasnas), Nitrobacter (Nitrobacter), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus), chlorothioum (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), myceliophthora (Hyphomicrobium), Geobacter (Geobacter), terreus (Thauera), blastomyceliophthora (blauera), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia), and Sphingomonas (sphingas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 117.50 mg.m-3The emission is reduced by 43.6 percent compared with the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 50.70mg m-3The emission is reduced by 50.0 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 6.27mg m-3The emission is reduced by 47.3 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 17.42mg m-3The emission is reduced by 42.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 2.69mg m-3The emission is reduced by 44.9 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 1.31mg m-3The emission is reduced by 47.0 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of the dimethylbenzene is 15.02 mg.m-3The emission is reduced by 49.1 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 2.99 mg.m-3The emission is reduced by 56.4 percent compared with the previous batch.
Example 12:
taking 55kg of organic domestic garbage in one village and town of Hangzhou, adding 30kg of mushroom residue and 0.1kg of decomposed compost, uniformly mixing, adjusting initial water content of the compost to 60%, carbon-nitrogen ratio to 25 and ventilation capacity to 0.5 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the type and concentration of malodorous gases generated in the composting process, and the result shows that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide and ethyl sulfide) are monitored in the composting processAlcohol and dimethyl disulfide), carbonaceous malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol, and acetaldehyde). Wherein the highest release concentration of ammonia gas is 235.03 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 126.72 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 13.27 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The highest release concentration of the dimethyl sulfide is 36.83 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 5.70 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 2.92 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 37.40 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 8.82 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 0.1kg of charcoal and 0.05kg of microbial deodorant NSC-1 are selectively added, mixed uniformly, and the ventilation amount is adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorant agent NSC-1 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 158.70 mg.m-3The emission is reduced by 32.5 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 82.38mg m-3Reducing emission compared with the previous batch35.0 percent; the highest release concentration of the methyl mercaptan is reduced to 8.65 mg.m-3The emission is reduced by 34.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 23.48 mg.m-3The emission is reduced by 36.2 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 3.59mg m-3The emission is reduced by 37.0 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 1.94mg m-3The emission is reduced by 33.6 percent compared with the emission of the previous batch; the highest release concentration of xylene is 24.67 mg.m-3The emission is reduced by 34.0 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 6.56 mg.m-3The emission is reduced by 25.6 percent compared with the previous batch.
Example 13:
taking 80kg of organic domestic garbage in a certain village and town of Hangzhou, adding 20kg of sawdust and 1.0kg of decomposed compost, uniformly mixing, and adjusting the initial water content of a pile body to 70%, the carbon-nitrogen ratio to 35 and the air permeability to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 313.83 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 239.78 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 27.50 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 43.43 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 8.94 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 3.99 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the xylene is 53.64 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 13.82 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 5.0kg of rice husk carbon is selectively added, the mixture is uniformly mixed, the initial water content is adjusted to 60 percent, the C/N is adjusted to 25 percent, and the composting is carried out by adopting a static forced ventilation mode. During the period, GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 13 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 216.54 mg.m-3The emission is reduced by 31.0 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 153.2mg m-3The emission is reduced by 36.1 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 18.2 mg.m-3The emission is reduced by 33.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 28.3 mg.m-3The emission is reduced by 34.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 5.39mg m-3The emission is reduced by 39.7 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 2.75mg m-3The emission is reduced by 31.1 percent compared with the emission of the previous batch; the highest release concentration of the xylene is 35.68 mg.m-3The emission is reduced by 33.5 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 9.18 mg.m-3The emission is reduced by 33.6 percent compared with the previous batch.
Example 14:
taking 80kg of organic domestic garbage of a certain village and town of Hangzhou, adding 20kg of rice hull and 0.1kg of decomposed compost, uniformly mixing, adjusting the initial water content of a pile body to 60%, the carbon-nitrogen ratio to 25 and the ventilation capacity to 0.5 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 329.30 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 250.70 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 28.40 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 49.32 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 8.96 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 4.42mg m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 59.90 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 15.10 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 0.05kg of microbial deodorant NSC-1 is selectively added, uniformly mixed, and the ventilation volume is adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorant agent NSC-1 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 253.60 mg.m-3The emission is reduced by 23.0 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 178.40mg m-3The emission is reduced by 28.8 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 19.36mg m-3The emission is reduced by 31.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 34.91 mg.m-3The emission is reduced by 29.2% compared with the emission of the previous batch;the highest release concentration of the dimethyl disulfide is reduced to 6.07 mg.m-3The emission is reduced by 32.3 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 3.23mg m-3The emission is reduced by 26.9 percent compared with the emission of the previous batch; the highest release concentration of xylene is 39.99 mg.m-3The emission is reduced by 33.2 percent compared with the emission of the previous batch; the maximum release concentration of the ethylbenzene is reduced to 11.36 mg.m-3The emission is reduced by 24.8 percent compared with the emission of the previous batch.
Example 15:
taking 80kg of organic domestic garbage in a certain village and town of Hangzhou, adding 20kg of straws and 0.5kg of decomposed compost, uniformly mixing, adjusting initial water content of a pile body to 65%, carbon-nitrogen ratio to 30 and ventilation capacity to 0.625 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 305.13 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 230.48 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 24.79 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 41.41 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 8.32 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 3.73 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 50.45 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 12.25 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 0.275kg of microbial deodorant NSC-2 is added and mixed evenlySelectively adjusting C/N to 25 and ventilation to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorizing agent NSC-2 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chlorobium (Chloroflexus), Thiobacillus (Thiobacillus), Thermomyces (Hyphomicrobium), Blastochlorsis (Blastochlorsis), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 218.7 mg.m-3The emission is reduced by 28.3 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 159.80mg m-3The emission is reduced by 30.7 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 16.48 mg.m-3The emission is reduced by 33.5 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 27.78 mg.m-3The emission is reduced by 32.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 5.41mg m-3The emission is reduced by 35.0 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 2.67mg m-3The emission is reduced by 28.4 percent compared with the emission of the previous batch; the highest release concentration of the dimethylbenzene is 32.8 mg.m-3The emission is reduced by 35.0 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 9.17 mg.m-3The emission is reduced by 25.1 percent compared with the previous batch.
Example 16:
mixing 80kg of organic domestic waste of certain villages and towns in Hangzhou with 20kg of bran and 1.0kg of decomposed compost uniformly, and adjusting initial water content of the compost to 70%, carbon-nitrogen ratio to 35 and ventilation capacity to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the type and concentration of malodorous gases generated in the composting process, and the result shows that 15 malodorous gases are monitored in the composting process, and the bagIncluding nitrogen-containing malodorous gases (ammonia), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, and dimethyl disulfide), and carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol, and acetaldehyde). Wherein the highest release concentration of ammonia gas is 303.43 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 229.87 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The highest release concentration of the methyl mercaptan is 23.99 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The highest release concentration of the dimethyl sulfide is 40.82 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 8.09 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 3.66 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 49.94 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The highest release concentration of ethylbenzene is 10.87 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 5.0kg of rice husk carbon and 0.5kg of microbial deodorant NSC-3 are selectively added, the mixture is uniformly mixed, the C/N is regulated to 25, and the composting is carried out by adopting a static forced ventilation mode. The deodorant agent NSC-3 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Micromycelium (Hyphomicrobium), Geobacter (Geobacter), Torulopsis (Thauera), Blastochlorus (Blastochlorris), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Coleomonas (Sphingomonas). During the period, GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 13 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene and the like are monitored in the composting process,Xylene, ethylbenzene, pinene, acenaphthylene and ethanol. Wherein the highest release concentration of ammonia gas is reduced to 139.70 mg.m-3The emission is reduced by 54.0 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 88.10 mg.m-3The emission is reduced by 61.7 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 9.26 mg.m-3The emission is reduced by 61.4 percent compared with the emission of the previous batch; the maximum release concentration of the dimethyl sulfide is reduced to 16.13mg m-3The emission is reduced by 60.5 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 3.42mg m-3The emission is reduced by 57.7 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 1.74mg m-3The emission is reduced by 52.5 percent compared with the emission of the previous batch; the highest release concentration of xylene is 22.84 mg.m-3The emission is reduced by 54.3 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 4.24 mg.m-3The emission is reduced by 61.0 percent compared with the emission of the previous batch.
Example 17:
mixing 80kg of organic domestic waste of certain villages and small towns in Hangzhou with 20kg of medicinal residue and 0.1kg of decomposed compost uniformly, adjusting initial water content of the compost to 60%, carbon-nitrogen ratio to 25, and ventilation capacity to 0.5 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the maximum release concentration of ammonia gas is 327.2 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 258.10 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 27.80mg m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The highest release concentration of the dimethyl sulfide is 48.46 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 8.75 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 4.52 mg.m-3Is high and highAt its olfactive threshold of 1.3554mg m-3(ii) a The maximum release concentration of the dimethylbenzene is 60.2 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 15.3 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, 0.1kg of charcoal and 0.05kg of microbial deodorant NSC-1 are selectively added, mixed uniformly, and the ventilation amount is adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorant agent NSC-1 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 215.40 mg.m-3The emission is reduced by 34.2% compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 155.80mg m-3The emission is reduced by 39.6 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 19.20 mg.m-3The emission is reduced by 30.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 31.30 mg.m-3The emission is reduced by 35.4 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 5.51mg m-3The emission is reduced by 37.0 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 2.89mg m-3The emission is reduced by 36.1 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of xylene is 37.80 mg.m-3The emission is reduced by 37.2% compared with the emission of the previous batch; the highest ethylbenzene releasing concentration is reduced to 10.38 mg.m-3The emission is reduced by 32.2 percent compared with the emission of the previous batch.
Example 18:
get hang80kg of organic domestic garbage in a certain village and town of China, adding 20kg of mushroom residues and 0.5kg of decomposed compost, uniformly mixing, adjusting the initial water content of a pile body to 65%, the carbon-nitrogen ratio to 30 and the air flow to 0.625 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 310.56 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 228.65 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The highest release concentration of the methyl mercaptan is 23.60 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 40.47 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 8.36 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest toluene release concentration is 3.93 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 49.25 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 13.68 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the next batch of composting operation, the initial water content is selectively adjusted to 60 percent, the C/N is adjusted to 25 percent, and the ventilation is selectively adjusted to 0.75L-kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 269.68 mg.m-3Is compared with the previous batchThe secondary emission reduction is 13.2%; the highest release concentration of the hydrogen sulfide is reduced to 186.88mg m-3The emission is reduced by 18.3 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 20.77 mg.m-3The emission is reduced by 12.0 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 32.82mg m-3The emission is reduced by 18.9 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 6.89mg m-3The emission is reduced by 17.6 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 3.13mg m-3The emission is reduced by 20.4 percent compared with the emission of the previous batch; the highest release concentration of the xylene is 38.98 mg.m-3The emission is reduced by 20.9 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 11.56 mg.m-3The emission is reduced by 15.5 percent compared with the emission of the previous batch.
Example 19:
taking 80kg of organic domestic garbage in a certain village and town of Hangzhou, adding 20kg of straws and 1.0kg of decomposed compost, uniformly mixing, adjusting the initial water content of a pile body to 60%, the carbon-nitrogen ratio to 25 and the ventilation capacity to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 313.16 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 227.14mg m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of the methyl mercaptan is 24.26 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 41.70 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 7.76 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 3.82 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the xylene is 48.23 mg.m-3Above its sniff threshold 0.1958mg·m-3(ii) a The maximum release concentration of ethylbenzene is 12.26 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 2.5kg of bamboo charcoal and 0.5kg of microbial deodorant NSC-3 are added and uniformly mixed, and the composting is carried out by adopting a static forced ventilation mode. The deodorant agent NSC-3 is a mixed microbial agent including Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Micromycelium (Hyphomicrobium), Geobacter (Geobacter), Torulopsis (Thauera), Blastochlorus (Blastochlorris), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Coleomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 152.84 mg.m-3The emission is reduced by 51.2% compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 120.70mg m-3The emission is reduced by 46.9 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 12.67mg m-3The emission is reduced by 47.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 20.10 mg.m-3The emission is reduced by 51.8 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 3.99 mg.m-3The emission is reduced by 48.6 percent compared with the emission of the previous batch; the highest release concentration of toluene is reduced to 1.99 mg.m-3The emission is reduced by 47.9 percent compared with the emission of the previous batch; the highest release concentration of xylene is 22.44 mg.m-3The emission is reduced by 53.5 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 5.98 mg.m-3The emission is reduced by 51.2 percent compared with the emission of the previous batch.
Example 20:
taking 80kg of organic domestic garbage of a certain village and town of Hangzhou, adding 20kg of rice hull and thoroughly decomposing1.0kg of compost is mixed evenly, the initial water content of the compost is adjusted to 70 percent, the carbon-nitrogen ratio is adjusted to 35 percent, and the ventilation volume is adjusted to 0.5 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 306.68 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 235.75 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 25.57 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The highest release concentration of the dimethyl sulfide is 41.78 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 8.77 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 3.73 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the xylene is 51.04 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 12.32 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 5.0kg of charcoal and 0.5kg of microbial deodorant NSC-3 are selectively added, uniformly mixed, the initial water content is adjusted to 60%, the C/N is adjusted to 25%, and the ventilation volume is adjusted to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. The deodorant agent NSC-3 is selected from Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Micromyces (Hyphomicrobium), Geobactrum (Geobacter), and Heraclella (Heracleum)Mixed microbial agents of the genera (Thauera), blastomyces (blastochris), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 119.35 mg.m-3The emission is reduced by 61.1 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 81.34mg m-3The emission is reduced by 65.5 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 8.33 mg.m-3The emission is reduced by 67.4 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 13.18mg m-3The emission is reduced by 68.5 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 2.95 mg.m-3The emission is reduced by 66.4 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 1.24mg m-3The emission is reduced by 66.8 percent compared with the emission of the previous batch and is lower than the olfactive threshold value of 1.3554 mg.m-3(ii) a The highest release concentration of the dimethylbenzene is 18.11 mg.m-3The emission is reduced by 64.5 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 3.56 mg.m-3The emission is reduced by 71.1 percent compared with the emission of the previous batch.
Example 21:
mixing 80kg of organic domestic waste of certain villages and towns in Hangzhou with 20kg of bran and 1.0kg of decomposed compost uniformly, adjusting initial water content of the compost to 60%, carbon-nitrogen ratio to 25 and ventilation capacity to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 315.44 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a Maximum release of hydrogen sulfideThe concentration is 226.64mg · m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The maximum release concentration of methyl mercaptan is 23.39 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 42.20 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 7.77 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 3.88 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of xylene is 47.13 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 11.56 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 5.0kg of charcoal is selected and added, mixed evenly and composted in a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 230.50 mg.m-3The emission is reduced by 26.9 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 173.70mg m-3The emission is reduced by 23.4 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 16.72 mg.m-3The emission is reduced by 28.5 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl sulfide is reduced to 31.24 mg.m-3The emission is reduced by 26.0 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 5.99 mg.m-3The emission is reduced by 22.9 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 2.89mg m-3The emission is reduced by 25.5 percent compared with the emission of the previous batch; the highest release concentration of the dimethylbenzene is 34.98 mg.m-3The emission is reduced by 25.8 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 8.55 mg.m-3The emission is reduced by 26.0 percent compared with the emission of the previous batch.
Example 22:
taking 80kg of organic domestic waste of a certain village and town of Hangzhou, and adding mushroomMixing 20kg of slag and 1.0kg of decomposed compost uniformly, adjusting the initial water content of the compost to 60%, the carbon-nitrogen ratio to 25 and the ventilation volume to 0.75 L.kg-1DM·min-1And composting by adopting a static forced ventilation mode. During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 15 malodorous gases including nitrogen-containing malodorous gases (ammonia gas), sulfur-containing malodorous gases (hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan and dimethyl disulfide), carbon-containing malodorous gases (benzene, toluene, xylene, ethylbenzene, pinene, acenaphthylene, limonene, ethanol and acetaldehyde) are monitored in the composting process. Wherein the highest release concentration of ammonia gas is 313.44 mg.m-3Above the olfactive threshold of 1.138 mg.m-3(ii) a The highest release concentration of hydrogen sulfide is 227.80 mg.m-3Above the olfactory threshold of 0.00062mg m-3(ii) a The highest release concentration of methyl mercaptan is 23.44 mg.m-3Above the olfactory threshold of 0.00015mg m-3(ii) a The maximum release concentration of the dimethyl sulfide is 41.22 mg.m-3Above the olfactory threshold of 0.003 mg.m-3(ii) a The maximum release concentration of the dimethyl disulfide is 7.82 mg.m-3Above its olfactive threshold 0.7125mg m-3(ii) a The highest release concentration of toluene is 3.78 mg.m-3Above its olfactive threshold 1.3554mg m-3(ii) a The highest release concentration of the xylene is 46.13 mg.m-3Above its olfactive threshold 0.1958mg m-3(ii) a The maximum release concentration of ethylbenzene is 12.51 mg.m-3Above its olfactive threshold 0.8045mg m-3(ii) a The concentration of other malodorous gases is lower than the respective smell threshold.
In the composting operation of the next batch, 0.5kg of microbial deodorant NSC-3 is selectively added, uniformly mixed and composted in a static forced ventilation mode. The deodorant agent NSC-3 is selected from the group consisting of Nitrospira (Nitrosospira), Nitrosomonas (Nitrosomonas), Nitrobacter (Nitrobacter), Rhodobacter (Rhodobacter), Paracoccus (Paracoccus), Chlorothionium (Chlorobium), Chloroflexus (Chloroflexus), Thiobacillus (Thiobacillus), Micromyceliophthora (Hyphomicrobium), Geobactrum (Geobacter), Thauera (Thauera), Blastochlorus (Blastochlorris), Pseudomonas (Pseudomonas), Burkholderia (Burkholderia)eria) and Sphingomonas (Sphingomonas). During the period, the GC-MS is adopted to continuously monitor the types and the concentrations of malodorous gases generated in the composting process, and the results show that 12 malodorous gases including ammonia gas, hydrogen sulfide, methyl mercaptan, methyl sulfide, ethyl mercaptan, dimethyl disulfide, benzene, toluene, xylene, ethylbenzene, pinene and ethanol are monitored in the composting process. Wherein the highest release concentration of ammonia gas is reduced to 230.10 mg.m-3The emission is reduced by 26.6 percent compared with the emission of the previous batch; the highest release concentration of the hydrogen sulfide is reduced to 176.38mg m-3The emission is reduced by 22.6 percent compared with the emission of the previous batch; the highest release concentration of the methyl mercaptan is reduced to 17.65 mg.m-3The emission is reduced by 24.7 percent compared with the emission of the previous batch; the maximum release concentration of the dimethyl sulfide is reduced to 30.48 mg.m-3The emission is reduced by 26.1 percent compared with the emission of the previous batch; the highest release concentration of the dimethyl disulfide is reduced to 5.59mg m-3The emission is reduced by 28.5 percent compared with the emission of the previous batch; the highest toluene release concentration is reduced to 2.94mg m-3The emission is reduced by 22.2 percent compared with the emission of the previous batch; the highest release concentration of the dimethylbenzene is 34.65 mg.m-3The emission is reduced by 24.9 percent compared with the emission of the previous batch; the highest release concentration of the ethylbenzene is reduced to 8.52 mg.m-3The emission is reduced by 31.9 percent compared with the previous batch.
The proportions of the substances in the above examples may be varied within the limits specified.

Claims (4)

1. An organic waste aerobic compost stink in-situ emission reduction method is characterized by comprising the following steps:
uniformly mixing 30-80 parts by weight of organic garbage and 20-40 parts by weight of auxiliary materials to obtain a mixed material; the organic garbage is an organic part in household garbage, and the auxiliary materials are one or more of sawdust, rice hulls, straws, bran, medicine residues and mushroom residues;
adding 0.1-1.0 part by weight of decomposed compost into the mixed material in the step (2), and uniformly mixing to obtain compost material; the decomposed compost is odorless organic garbage compost which is fermented and decomposed at high temperature, and the water content is 35-45%; the mass ratio of the total carbon content to the total nitrogen content of the compost material, namely the carbon-nitrogen ratio is 25-35: 1;
step (3) is toThe compost materials are filled into a forced ventilation static compost reactor for composting, and the composting conditions are as follows: initial water content of 60-70% and ventilation capacity of 0.5-0.75L/kg-1DM·min-1；
And (4) monitoring the concentration of volatile malodorous gases released in the composting process by adopting a gas chromatography-mass spectrometer every day, wherein the volatile malodorous gases comprise nitrogen-containing malodorous gases, sulfur-containing malodorous gases and carbon-containing malodorous gases:
if the monitored concentration of various malodorous gases is lower than the threshold value of the olfactory concentration of the malodorous gases, recording process parameters as the basis of the next composting process; if the monitored concentration of each malodorous gas is not lower than the threshold value of the olfactory concentration of the malodorous gas, executing the step (5);
step (5) in the next batch of composting operation, selecting one or more of the following operations:
A. changing the weight ratio of the organic garbage to the auxiliary materials within the proportion range of the organic garbage to the auxiliary materials in the mixed materials in the step (1);
B. adjusting the carbon-nitrogen ratio of the compost material in the step (2);
C. varying the initial water content and/or aeration within the range of composting conditions of step (3);
D. adding 0.1-5 parts by weight of biomass charcoal into the mixed material, and uniformly mixing;
E. adding 0.05-0.5 part by weight of microbial deodorant into the mixed material, and uniformly mixing;
and (6) in different composting operations, repeatedly executing the step (5), monitoring the concentration of volatile malodorous gas released in the composting process every day by adopting different operations every time until the monitored concentration of various malodorous gases is lower than that released in the previous batch, and recording process parameters as the basis of the subsequent composting process.
2. The method for in-situ odor emission reduction of organic waste aerobic compost according to claim 1, characterized by comprising the following steps: in the mixed material in the step (1), the water content of the organic garbage is more than 85%, and the water content of the auxiliary materials is less than 20%.
3. The method for in-situ odor emission reduction of organic waste aerobic compost according to claim 1, characterized by comprising the following steps: the biomass charcoal is one or more of charcoal, bamboo charcoal and rice husk charcoal.
4. The method for in-situ odor emission reduction of organic waste aerobic compost according to claim 1, characterized by comprising the following steps: the microbial deodorant comprises: the microorganism agent is one or more of the mixed microorganism of the genera Nitrospira, Nitrosomonas, Nitrobacter, Methanothrix, Rhodococcus, Paracoccus and Sphingobacterium associated with the removal of nitrogen-containing malodors, the genera Chlorothionis, Chlorflexibacter, Thiobacillus and filamentous associated with the removal of sulfur-containing malodors, and the genera Azotobacter, Geobacillus, terreus, Blastomyces, Pseudomonas, Burkholderia and sphingomonas associated with the removal of carbon-containing malodors.
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