CN103910476B - Based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material - Google Patents
Based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material Download PDFInfo
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Abstract
Based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material, belong to field of environment protection.For municipal dewatered sludge organic content, high but mud Middle nutrition composition is difficult to the problem made full use of to this patent, carries out biological dewatered after first adopting sodium hydroxide to carry out pre-treatment to municipal dewatered sludge.Key step of the present invention is: the NaOH pretreatment of (1) municipal dewatered sludge.(2) allotment of sludge organism mummification matrix.(3) preparation of sludge fermentation inoculum.(4) under alkaline condition, municipal dewatered sludge is biological dewatered.By above-mentioned steps, fast dewatering and the stabilization of municipal sludge can be realized.
Description
Technical field
The present invention relates to municipal sludge drying technology, particularly relate to municipal dewatered sludge based on NaOH pretreatment without the biological dewatered method of auxiliary material.
Background technology
In recent years, along with the quickening day by day of Urbanization in China, the construction speed of sewage treatment facility also significantly improves thereupon, and the output of mud also rises thereupon.According to statistics, to the end of the year 2009, China will have urban wastewater treatment firm more than 3000 family, and mud (water content 80%) output is more than 2,000 ten thousand tons then, and is in the stage of increasing rapidly, and specific resistance to filtration form is very severe.The process method of disposal of current mud has 4 kinds of major ways such as landfill, burning, throwing sea and compost, and wherein landfill is its major way, but due to place can be utilized to lack, and very easily cause secondary pollution, therefore which will progressively be eliminated.In addition, China's " household refuse landfill sites Environmental capacity standard " (GB16889-2008) regulation municipal sewage sludge drops to less than 60% at water ratio and just can enter landfill yard, and sludge moisture content can only be reduced to 70-80% by Sewage Plant adopts at present mechanical dehydration technology usually, do not meet landfill requirement.Because the specific resistance to filtration mode of China is not perfect, the severe challenge having become wastewater treatment in China industry and faced is disposed in the reasonable process of mud
The main character of mud is: 1) organic abundant, character is unstable, and easily corruption is smelly; 2) pollutant load is high; 3) water content is high, not easily dewaters; 4) there is certain fluidity, can Cemented filling; 5) certain fertilizer efficiency is had; 6) containing pathogenic bacteria and parasitic ovum.Because the water content of mud is usually at 70-80%, have that volume is large, character is unstable, a not easily feature such as transport, therefore need to carry out dewatering that to realize its minimizing be carry out processing the matter of utmost importance disposed to it.The sludge drying process adopted at present is usually heat drying technology, has that floor space is little, efficiency advantages of higher, but because of its energy consumption higher, do not meet energy-saving and emission-reduction requirement.Therefore, the biological dewatered technology of development less energy-consumption, low cost has broad application prospects in China.
The biological dewatered a kind of important way being process and comprising the municipal solid wastes of mud is by During High-Temperature Composting technological development.Its principle utilizes the biological heat energy that in microorganism high-temperature aerobic fermentation process, organic matter degradation produces, substrate temperature can be made to rise to 55-70 DEG C, promote moisture evaporation by process adjustment means simultaneously, thus realize a kind of drying and other treatment technique removing moisture fast.Biological dewatered the most significant advantage does not need external heat source, and needed for its mummification, heat energy comes from the vital movement of microorganism, therefore have environmental protection, the advantage such as energy-conservation.Biological dewatered for eliminating mud stink, kill pathogenic bacteria wherein and parasitic ovum, degraded toxic substance, solidification or heavy metal-passivated, improve mud physical behavior important in inhibiting.
But there is the problems such as processing speed is slow, auxiliary material addition is large in current biological dewatered technology.Patent application prospectus CN201210311429.3 discloses a kind of sludge organism drying method, and its key step is: (1) is got partial sludge and carried out acidolysis process, is returned by the mud after acidolysis in the mud being added to non-acidolysis; (2) add in mud weighting material (wherein one or more combination in weighting material A polyethylene or polypropylene or polyvinyl chloride, diameter is spherical, column or the multiple edge body plastic grain of 5-10mm; Weighting material B is one or several the combination in rice husk or stalk or wood chip or weeds); (3) complex micro organism fungicide (main bacteria seed is aspergillus niger and bacillus pumilus) is added; (4) ventilate; (5) stir.The method partly can solve large, the slow-footed problem of fermentation starting of mud hydrolysis difficulty in early stage, but also exist sludge-filled thing recovery difficult large, be unfavorable for problems such as promoting on a large scale; And can sludge pH be caused to a certain extent to reduce after adding acid, be unfavorable for rapid microbial growth.
The method taked sludge organism mummification at present realizes quick mummification by height raising treatment temp and ventilation on the basis adding auxiliary material (stalk, flyash etc.), do not consider from mud entocyte releasing effect, microorganism active and sludge reduction final effect angle.
Summary of the invention
The object of the invention is a kind of municipal dewatered sludge based on NaOH pretreatment without the biological dewatered method of auxiliary material.
Based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material, it is characterized in that it is made up of following steps: after adding 0.2-1 part NaOH pretreatment in (1) 100 part of municipal dewatered sludge, obtain alkaline sludge matrix; (2) allocate alkaline sludge water content of substrate and obtain sludge organism mummification matrix to 50-65%; (3) containing preserving number be the trichoderma asperellum CGM-10(of CCTCC No.M 2014001
trichoderma asperellumthe cultivation of sludge fermentation inoculum CGM-10), obtains sludge fermentation inoculum; (4) biological dewatered process 5-10 days, obtains sludge organism mummification product.
The concrete feature of this programme also has, municipal dewatered sludge based on NaOH pretreatment without the idiographic flow of NaOH pretreatment in the biological dewatered method steps of auxiliary material (1) is, the sodium hydroxide of 0.2-1 part is added in the municipal dewatered sludge being 70-80% with the water content of parts by weight 100 parts, under 20-40 DEG C of condition, process 2-4 days after stirring, obtain alkaline sludge matrix.
Municipal dewatered sludge based on NaOH pretreatment without the idiographic flow of the biological dewatered method steps of auxiliary material (2) allotment alkaline sludge matrix is: the part in the alkaline sludge matrix obtained in step (1) is dried or is shone to water content be 5-10%, or utilize the sludge organism mummification product obtained in step (4), add in the alkaline sludge matrix that step (1) obtains, adjustment initial moisture content is 50-65%, obtains sludge organism mummification matrix.
The idiographic flow of step (3) is: inoculate at 20-40 DEG C trichoderma asperellum CGM-10 (
trichoderma asperellumcGM-10), preserving number CCTCC No. M 2014001, the sludge organism mummification matrix inoculum size that per kilogram step (2) obtains is 10
6-10
9individual spore, treatment time 5-10 days, obtains sludge fermentation inoculum.
Based on NaOH pretreatment municipal dewatered sludge without the biological dewatered process under the biological dewatered method of auxiliary material its step (4) alkaline condition idiographic flow for: sludge organism mummification matrix step (2) obtained loads biological dewatered reactor, the sludge fermentation inoculum obtained in inoculation step (3), its weight is the 5-10% of biological dewatered matrix actual weight, every day ventilates 7-10 time, volume and the mud actual volume ratio of ventilation be (0.3-0.5) ︰ 1, each time length is 10-30 minute; Stir during ventilation, rotating speed is 5-30 rev/min, and the time length is 10-30 minute; Biological dewatered constant temperature remains on 50-70 DEG C, and the treatment time is 5-10 days; Obtain sludge organism mummification product.
The present invention's municipal dewatered sludge used refers to that municipal plumbing treatment system feedwater, rainwater, sanitary sewage etc. are collected and the water content produced after flocculation and dehydration after Wastewater Treated by Activated Sludge Process by purification of water quality factory is the mud of 60-80%, to refer in particular in dry-matter organic content at the municipal dewatered sludge of 40-60%.
Bacterial strain uses therefor of the present invention is trichoderma asperellum CGM-10, Latin name
trichoderma asperellumcGM-10, this bacterial strain is preserved in China typical culture collection center (CCTCC) on January 6th, 2014, and address is Luo Jia Shan, wuchang, wuhan Wuhan University, deposit number CCTCC No. M 2014001(
trichoderma asperellumcGM-10).This bacterial strain screens and obtains from municipal sludge.Its concrete screening method is: (mud leach liquor 1000 milliliters, methyl catechol 0.06 gram, W-Gum 2 grams, glucose 0.5 gram, 20 grams, agar, pH 9,121 DEG C of sterilizings were down flat plate after 30 minutes) obtain.Wherein mud leach liquor refers to, dry the mud of water content 60-80% to water content less than 10%, the ratio adding 1000 ml tap waters with 200 grams of dewatered sludges carries out extracting and boils process 30 minutes, the supernatant liquor of centrifugal acquisition.This trichoderma asperellum has following feature: on selective medium, growth rapidly, can be covered with flat board in 3 days, and aerial hyphae be white, and spore be green, distributes in bacterium colony upper annular, can secretion laccase, can produce obvious rust zone of oxidation in periphery of bacterial colonies.Its activation medium comprises: potato extracting solution 200 grams, glucose 20 grams, 1000 milliliters, tap water, 20 grams, agar, pH5.0.Wherein potato extracting solution refers to, 200 grams, potato, and stripping and slicing is boiled after 30 minutes and filtered rear gained clarification extracting solution with crocus cloth (80-150 order).
Trichoderma asperellum CGM-10 ITS-5.8S rDNA nucleotide sequence of the present invention is as shown in sequence table SEQ ID No.1.By U.S.'s Biotechnology Information center (National Center for Biotechnology Information, NCBI) sequence homology analysis, compared by BLAST instrument by the ITS-5.8S Nucleotide of bacterial strain CGM-10 of the present invention, comparison result shows that this bacterial strain belongs to trichoderma asperellum.In conjunction with this bacterial strain turn out, according to " Fungal identification handbook " (Wei Jingchao work), the morphological analysis of mycelium morphology analysis and spore shows that this bacterial strain belongs to the trichoderma asperellum in fungi Trichoderma.
Sequence table SEQ ID No.1
Trichoderma asperellum CGM-10(
trichoderma asperellumcGM-10) ITS-5.8S rDNA nucleotide sequence
1 CAACCCAATG TGACGTTACC AAACTGTTGC CTCGGCGGGG TCACGCCCCG GGTGCGTCGC
61 AGCCCCGGAA CCAGGCGCCC GCCGGAGGCA CCAACCAAAC TCTTTCTGTA GTCCCCTCGC
121 GGACGTATTT CTTTACAGCT CTGAGCAAAA ATTCAAAATG AATCAAAACT TTCAACAACG
181 GATCTCTTGG TTCTGGCATC GATGAACAAC GCAGCGAAAT GCGATAAGTA ATGTGAATTG
241 CAGAATTCAG TGAATCATCG AATCTTTGAA CGCACATTGC GCCCGCCAGT ATTCTGGCGG
301 GCATGCCTGT CCGAGCCTCA TTTCAACCCT CGAACCCCTC CGGGGGATCG GCGTTGGGGA
361 TCGGGACCCC TCACACGGGT GCCGGCCCCT AAATACAGTG GCGGTCTCGC CGCAGCCTCT
421 CCTGCGCAGT AGTTTGCACA ACTCGCACCG GGAGCGCGGC GCGTCCACGT CCGTAAAACA
481 CCCAACTTTC TGAAATGTTG ACCTCGGATC AGGTAGGAAT ACCCGCTGAA CTTAAGCATA
541 TCAATAAGCG GAGGAA
The preparation method of reesei spores of the present invention is: after activation medium of the present invention cultivates 7 days at 30 DEG C, rinses and dilute the certain density spore suspension of rear acquisition with sterilized water (aseptic deionized water that 121 DEG C of sterilizings obtained after 30 minutes).
Biological dewatered reactor of the present invention refers to the aerobic fermentation device with stirring and ventilation function, especially, refers to the solid fermentation can system with stirring and ventilation function.
In the present invention if no special instructions, raw material dosage is weight part.
beneficial effect of the present invention is:utilize the biological dewatered technology of NaOH pretreatment technology, alkaline sludge and dewatered sludge reuse technology, sludge organism anhydration system microorganism active is significantly improved (leavening temperature remains on 50-70 DEG C), realizes the object of the high-performance bio mummification of municipal dewatered sludge and minimizing, stabilization.This technology has without the need to external heat source, energy consumption low, adds, aftertreatment is easy, the advantage such as suitable popularization on a large scale without the external source such as stalk, flyash auxiliary material, makes a concrete analysis of as follows:
1, the sodium hydroxide of present method low dosage in preprocessing process, microorganism cells broken wall in mud can be accelerated, easily can be realized significantly improving (as risen to 14580 micrograms/gram dry weight from 480 micrograms/gram dry weight), for subsequent bio mummification hyperthermic treatment provides nutritive substance basis by the soluble protein that microorganism utilizes.
2, the amount of sodium hydroxide that adds of present method is less, and along with microorganism cells in mud is destroyed in treating processes, intracellular organic matter discharges, sludge pH can be caused to occur to a certain degree declining, after process, sludge pH reaches 8-10, is applicable to most of microbe growth.
3, present method inoculates trichoderma asperellum in alkaline sludge matrix, utilize this bacterial strain can reduce 0.8-1.2 pH unit utilizing a large amount of acidic substance produced in alkaline sludge substrate fermentation process to reduce pH(), be conducive to the quick growth and breeding of microorganism in matrix.In addition, this Trichoderma asperellum strain can also secretion laccase, and the part pollutent in degradable mud, as aldehydes matter and polycyclic aromatic hydrocarbons, reduces pollutant load wherein.
4, under present method achieves basic treatment, alkaline condition, sludge drying carries out continuously, and utilizes dewatered sludge reuse as moisture amendment, no longer adds external source auxiliary material agricultural crop straw or flyash.
Embodiment
Below in conjunction with embodiment, invention is further described.
embodiment 1
Based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material, it is made up of following steps: (1) municipal dewatered sludge initial water content 80%, get 50 kilograms, mud, add 100 grams, sodium hydroxide, 2 days are processed under 40 DEG C of conditions, in mud, Soluble Protein Contents rises to 2380 micrograms/gram dry weight from 508 micrograms/gram dry weight, and the pH value after process terminates is 8.4, obtains alkaline sludge matrix.
(2) allotment of sludge organism mummification matrix: it is 5% that the alkaline sludge matrix part obtained through step (1) is dried to water content, obtain and to obtain alkaline sludge matrix after dewatered sludge with step (1) and mix and regulate initial moisture content to be 50%, acquisition sludge organism mummification matrix.
(3) preparation of sludge fermentation inoculum.Alkaline-resisting microbiobacterial agent trichoderma asperellum CGM-10(is inoculated at 20 DEG C
trichoderma asperellumcGM-10) (bacterial strain preserving number CCTCC No. M 2014001), the sludge organism mummification matrix inoculum size that per kilogram step (2) obtains is 10
6-10
9individual spore, in 5 days treatment times, obtains the sludge fermentation inoculum that pH value is 7.7.
(4) through 30 kilograms, the mud of the sludge organism mummification matrix of step (2) pre-treatment acquisition, add the sludge fermentation inoculum 3 kilograms obtained in step (3), biological dewatered process 3 days is carried out in 50 liters of GRTL-D-50D type solid-state fermentation tanks, ventilate every day period 7 times, ventilation is 0.3 ︰ 1 (volume ratio, be as the criterion with mud actual volume), each time length is 10 minutes; Stir during ventilation, rotating speed is 5 revs/min, and the time length is 10 minutes.The biological dewatered cycle is 10 days, obtains the biological dewatered sludge product of water content 42%.
embodiment 2
Based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material, it is made up of following steps: (1) municipal dewatered sludge initial water content 76%, get 60 kilograms, mud, 600 grams, sodium hydroxide, 4 days are processed under 20 DEG C of conditions, in mud, Soluble Protein Contents rises to 13530 micrograms/gram dry weight from 580 micrograms/gram dry weight, and the pH value that process terminates rear mud is 9.7, obtains alkaline sludge matrix.
(2) allotment of sludge organism mummification matrix: will dry to water content through step (1) alkaline sludge matrix part is 10%, adds in the alkaline sludge matrix that step (1) obtains, regulates initial moisture content to be 65%, obtains sludge organism mummification matrix.
(3) preparation of sludge fermentation inoculum.Alkaline-resisting microbiobacterial agent trichoderma asperellum CGM-10(is inoculated at 40 DEG C
trichoderma asperellumcGM-10) (bacterial strain preserving number CCTCC No. M 2014001), the sludge organism mummification matrix inoculum size that per kilogram step (2) obtains is 10
6-10
9individual spore, in 10 days treatment times, obtains the sludge fermentation inoculum that pH is 8.5.
(4) through the sludge substrate 35 kilograms of NaOH pretreatment, add the sludge fermentation inoculum 2 kilograms obtained through step (3), process in 50 liters of GRTL-D-50D type solid-state fermentation tanks, ventilate every day period 10 times, ventilation is 0.5 ︰ 1(volume ratio, be as the criterion with mud actual volume), each time length is 30 minutes; Stir during ventilation, rotating speed is 30 revs/min, and the time length is 30 minutes.The biological dewatered cycle is 5 days, and biological dewatered process terminates the biological dewatered sludge product of rear acquisition water content 39%.
embodiment 3
Based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material, it is made up of following steps:
(1) municipal dewatered sludge initial water content 70%, get 40 kilograms, mud, add 320 grams, sodium hydroxide, 3 days are processed under 30 DEG C of conditions, in mud, the content of soluble protein rises to 14580 micrograms/gram dry weight from 480 micrograms/gram dry weight, the pH value that process terminates rear mud is 9.1, obtains alkaline sludge matrix.
(2) allotment of sludge organism mummification matrix: the water content 39% that embodiment (2) is obtained biological dewatered after dewatered sludge add in the alkaline sludge matrix that step (1) obtains, regulate initial moisture content to be 60%, obtain sludge organism mummification matrix.
(3) preparation of sludge fermentation inoculum.Alkaline-resisting microbiobacterial agent trichoderma asperellum CGM-10(is inoculated at 30 DEG C
trichoderma asperellumcGM-10) (bacterial strain preserving number CCTCC No.M 2014001), the sludge organism mummification matrix inoculum size that per kilogram step (2) obtains is 10
6-10
9individual spore, in 8 days treatment times, obtains the sludge fermentation inoculum that pH value is 8.3.
(4) the sludge fermentation inoculum 1 kilogram adding in 50 liters of GRTL-D-50D type solid-state fermentation tanks and obtain in step (3) is moved into through 20 kilograms, the pretreated mud of step (1), carry out biological dewatered process 8 days, ventilate every day period 8 times, ventilation is 0.4 ︰ 1(volume ratio, be as the criterion with mud actual volume), each time length is 15 minutes; Stir during ventilation, rotating speed is 15 revs/min, and the time length is 15 minutes.Biological dewatered process terminates the biological dewatered sludge product of rear acquisition water content 33%.
embodiment 4 (comparative example)
(1) municipal dewatered sludge initial water content 65%, gets 40 kilograms, mud, adds 800 grams, sodium hydroxide, 4 days are processed under 30 DEG C of conditions, in mud, Soluble Protein Contents rises to 12590 micrograms/gram dry weight from 680 micrograms/gram dry weight, and the pH value after process terminates is 12.2, obtains alkaline sludge matrix.
(2) allotment of sludge organism mummification matrix: by the alkaline sludge matrix obtained through step (1) part dry after to water content be 5%, add in the alkaline sludge matrix that step (1) obtains, regulate initial moisture content to be 65%, obtain sludge organism mummification matrix.
(3) preparation of sludge fermentation inoculum.Alkaline-resisting microbiobacterial agent trichoderma asperellum CGM-10(is inoculated at 30 DEG C
trichoderma asperellumcGM-10) (bacterial strain preserving number CCTCC No. M 2014001), the sludge organism mummification matrix inoculum size that per kilogram step (2) obtains is 10
6-10
9individual spore, in 7 days treatment times, sludge pH is 12.1.Through microbe colony counting, find that in mud, increasing does not appear in microbe population.
(3) move in 50 liters of GRTL-D-50D type solid-state fermentation tanks through 20 kilograms, the pretreated mud of step (2), add dewatered sludge 2.2 kilograms, add 1 kilogram, the sludge fermentation seed obtained in step (3), carry out aerobic fermentation process 8 days, ventilate every day period 8 times, ventilation is 0.4 ︰ 1(volume ratio, is as the criterion with mud actual volume), each time length is 15 minutes; Stir during ventilation, rotating speed is 15 revs/min, and the time length is 15 minutes.Off-test obtains the mud (pH value is 12.1) of water content 63%.
embodiment 5(comparative example)
(1) municipal dewatered sludge initial water content 70%, get 40 kilograms, mud, add 600 grams, sodium hydroxide, under 30 DEG C of conditions, process 5 days, in mud, Soluble Protein Contents rises to 11020 micrograms/gram dry weight from 708 micrograms/gram dry weight, and the pH value that process terminates the alkaline sludge matrix of rear acquisition is 13.8.
(2) allotment of sludge organism mummification matrix: by obtain through step (1) alkaline sludge matrix add broken stalk and sawdust, regulate water ratio be 60%, initial carbon-nitrogen ratio is 21 ︰ 1, and pH value is 13.2 after testing, cannot be used for biological dewatered process.
embodiment 6(comparative example)
(1) municipal dewatered sludge initial water content 70%, get 40 kilograms, mud, add 320 grams, sodium hydroxide, 4 days are processed under 30 DEG C of conditions, in mud, the content of soluble protein rises to 14580 micrograms/gram dry weight from 480 micrograms/gram dry weight, the pH value that process terminates rear mud is 9.1, obtains alkaline sludge matrix.
(2) allotment of sludge organism mummification matrix: the water content 39% that embodiment (2) is obtained biological dewatered after dewatered sludge add in the alkaline sludge matrix that step (1) obtains, regulate initial moisture content to be 60%, obtain sludge organism mummification matrix.
(3) preparation of sludge fermentation inoculum.At 30 DEG C, inoculate the dewatered sludge (inoculum size is 10% of gross weight) of the water content 33% obtained in embodiment 3,8 days treatment times, obtaining pH value is 8.9 sludge fermentation inoculums.
(4) the sludge organism mummification matrix 30 kilograms obtained through step (2) moves into the sludge fermentation inoculum 1 kilogram adding in 50 liters of GRTL-D-50D type solid-state fermentation tanks and obtain in step (3), carry out biological dewatered process 8 days, ventilate every day period 8 times, ventilation is 0.4 ︰ 1(volume ratio, be as the criterion with mud actual volume), each time length is 15 minutes; Stir during ventilation, rotating speed is 15 revs/min, and the time length is 15 minutes.Biological dewatered process terminates the biological dewatered sludge product of rear acquisition water content 49%.
Claims (5)
1. based on the municipal dewatered sludge of NaOH pretreatment without the biological dewatered method of auxiliary material, it is characterized in that it is made up of following steps: after adding 0.2-1 part NaOH pretreatment in (1) 100 part of municipal dewatered sludge, obtain alkaline sludge matrix; (2) allocate alkaline sludge water content of substrate and obtain sludge organism mummification matrix to 50-65%; (3) containing preserving number be the trichoderma asperellum CGM-10(of CCTCC No.M 2014001
trichoderma asperellumthe cultivation of sludge fermentation inoculum CGM-10), obtains sludge fermentation inoculum; (4) biological dewatered process 5-10 days, obtains sludge organism mummification product.
2. the municipal dewatered sludge based on NaOH pretreatment according to claim 1 is without the biological dewatered method of auxiliary material, it is characterized in that the idiographic flow of NaOH pretreatment in its step (1) is, the sodium hydroxide of 0.2-1 part is added in the municipal dewatered sludge being 70-80% with the water content of parts by weight 100 parts, under 20-40 DEG C of condition, process 2-4 days after stirring, obtain alkaline sludge matrix.
3. the municipal dewatered sludge based on NaOH pretreatment according to claim 1 is without the biological dewatered method of auxiliary material, the idiographic flow of its step (2) allotment alkaline sludge matrix is: the part in the alkaline sludge matrix obtained in step (1) is dried or is shone to water content be 5-10%, or utilize the sludge organism mummification product obtained in step (4), add in the alkaline sludge matrix that step (1) obtains, adjustment initial moisture content is 50-65%, obtains sludge organism mummification matrix.
4. the municipal dewatered sludge based on NaOH pretreatment according to claim 1 is without the biological dewatered method of auxiliary material, and the idiographic flow of its step (3) is: inoculate at 20-40 DEG C trichoderma asperellum CGM-10 (
trichoderma asperellumcGM-10), preserving number CCTCC No. M 2014001, the sludge organism mummification matrix inoculum size that per kilogram step (2) obtains is 10
6-10
9individual spore, treatment time 5-10 days, obtains sludge fermentation inoculum.
5. the municipal dewatered sludge based on NaOH pretreatment according to claim 1 is without the biological dewatered method of auxiliary material, the idiographic flow of its step (4) biological dewatered process for: sludge organism mummification matrix step (2) obtained loads biological dewatered reactor, the sludge fermentation inoculum obtained in inoculation step (3), its weight is the 5-10% of biological dewatered matrix actual weight, every day ventilates 7-10 time, volume and the mud actual volume ratio of ventilation are 0.3-0.5 ︰ 1, and each time length is 10-30 minute; Stir during ventilation, rotating speed is 5-30 rev/min, and the time length is 10-30 minute; Biological dewatered constant temperature remains on 50-70 DEG C, and the treatment time is 5-10 days; Obtain sludge organism mummification product.
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| CN105837005B (en) * | 2016-06-13 | 2018-05-25 | 山东省科学院能源研究所 | Municipal biological dewatered organic conditioner of excess sludge and preparation method thereof |
| CN107056409B (en) * | 2017-01-09 | 2020-10-09 | 山东省科学院能源研究所 | Functional biochar-based nutrient medium for preventing and treating root rot and preparation method thereof |
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| CN101580410A (en) * | 2008-08-29 | 2009-11-18 | 东莞市大众农业科技有限公司 | Method for producing alkaline organic fertilizer by papermaking sludge |
| CN102381822A (en) * | 2011-07-18 | 2012-03-21 | 刘建伦 | Multi-strain compound microbial high-temperature rapid-digestion sludge harmless treatment method |
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| CN101580410A (en) * | 2008-08-29 | 2009-11-18 | 东莞市大众农业科技有限公司 | Method for producing alkaline organic fertilizer by papermaking sludge |
| CN102381822A (en) * | 2011-07-18 | 2012-03-21 | 刘建伦 | Multi-strain compound microbial high-temperature rapid-digestion sludge harmless treatment method |
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