CN110713420A - Method for fixing nutrients in liquid dung for pig breeding - Google Patents
Method for fixing nutrients in liquid dung for pig breeding Download PDFInfo
- Publication number
- CN110713420A CN110713420A CN201911141966.6A CN201911141966A CN110713420A CN 110713420 A CN110713420 A CN 110713420A CN 201911141966 A CN201911141966 A CN 201911141966A CN 110713420 A CN110713420 A CN 110713420A
- Authority
- CN
- China
- Prior art keywords
- pig
- manure
- liquid dung
- water
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention provides a method for fixing and holding the nutrients of the liquid dung for pig breeding, which comprises the steps of slowly adding calcium superphosphate into the liquid dung of livestock and poultry in a regulating tank, continuously stirring, and regulating the pH value of the liquid dung of livestock and poultry to be within the range of 6.0-6.5; the adding amount of the calcium superphosphate is 2 to 5.5 percent of the mass fraction of the livestock and poultry manure water. The method can reduce 43-99% of ammonia emission flux in the liquid dung storage process, improves the liquid dung fertilizer efficiency, simultaneously ensures that the number of faecal coliform groups in the liquid dung meets the national standard requirement, and can improve the crop yield, reduce the ammonia emission and the nitrogen leaching loss in the farmland after the liquid dung is added with calcium superphosphate and stored and is applied to the field of the pig breeding liquid dung, thereby having good ecological environmental benefit.
Description
Technical Field
The invention relates to the technical field of resource utilization of agricultural wastes, in particular to a method for fixing nutrients in liquid dung for pig breeding.
Background
Pork is taken as the main raw material for meat production and consumption in China, and accounts for about 56.6 percent of the total value proportion of domestic livestock and poultry (pig, cattle, sheep and poultry) breeding, and the discharge amount of liquid dung generated in pig breeding is increased rapidly along with the rapid development of large-scale breeding in China, so that the pork is one of important discharge sources of agricultural non-point source pollution and greenhouse gas and ammonia gas discharge.
At present, 2 modes of returning the pig liquid dung after anaerobic fermentation and storage and directly storing the liquid dung to the field are mainly used for treating the liquid dung of the live pig, wherein the advantage that the generated methane is taken as clean energy by the anaerobic fermentation becomes a main mode of utilizing the liquid dung which is vigorously promoted in China, but in the production of the liquid dung by the anaerobic fermentation, the equipment maintenance cost is higher, and meanwhile, the methane produced by a small-scale farm has no economic value of utilization, so that a lot of methane is directly discharged into the atmosphere, and the environmental pollution is caused; in the aspect of direct storage and returning of the liquid dung, the liquid dung contains a large amount of urea which is decomposed to generate a large amount of ammonium ions, and the liquid dung releases a large amount of ammonia gas due to the excessive accumulation of the ammonium ions in the liquid dung, so that the environment is polluted. The manure water is alkaline under the condition that a large amount of ammonium radicals exist, and ammonium ions in the manure water can be stored for a long time by adding acid into the manure water, so that the fertilizer efficiency of the manure water is improved, and the volatilization of ammonia gas is reduced.
Disclosure of Invention
The invention aims to provide a method for fixing and holding the nutrients in the liquid dung for the pig breeding, which can ensure that ammonium ions in the liquid dung can be stored in the liquid dung for a long time, reduce the volatilization of ammonia in the liquid dung and achieve the aim of fixing and holding the nutrients in the liquid dung, thereby overcoming the defects in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for fixing the nutrients in the liquid dung for pig cultivation includes: slowly adding calcium superphosphate into the pig manure water in the adjusting pool, continuously stirring, and adjusting the pH value of the pig manure water to be within the range of 6.0-6.5; wherein the adding amount of the calcium superphosphate is 2 to 5.5 percent of the mass fraction of the pig manure water.
Wherein, the pH value can be completed by adopting a pH on-line detector, and the pH change in the process of adding the calcium superphosphate needs to be monitored in real time, so that the pH value of the liquid dung is prevented from being less than 6.0.
Further, the method comprises the step of introducing the pig manure water added with the calcium superphosphate into a storage pool for storage for at least 30 days.
Furthermore, the adding amount of the calcium superphosphate is 4-5% of the mass fraction of the raw pig manure water.
Furthermore, the pig manure water comprises manure water generated by dry manure cleaning in a pig farm and one or more of liquid parts of water-washed manure and water-soaked manure after solid-liquid separation in a pig farm.
Further, the original pH value of the pig manure water is between 6.5 and 8.5, and the solid content is less than 5 percent.
Further, the particle size of the calcium superphosphate is less than 80 meshes; and is added into the livestock and poultry manure water in a slow splashing way.
Specifically, the calcium superphosphate is industrial calcium superphosphate and is analytically pure.
Further, a float bowl type stirrer is arranged in the adjusting tank.
The regulating reservoir has the functions of seepage prevention, acid corrosion prevention and pressure resistance.
The regulating tank and the storage tank have the functions of seepage prevention, acid corrosion prevention and pressure resistance.
Compared with the prior art, the invention has at least the following beneficial effects:
(1) after the calcium superphosphate is added, the pH value of the liquid dung for pig breeding in the later storage period is increased to 6.0-8.0, the ammonium nitrogen content in the liquid dung is increased by 82-101%, the ammonia gas emission flux of 43-99% in the liquid dung storage process can be reduced, the liquid dung fertilizer efficiency is improved, and the number of faecal coliform groups in the liquid dung can reach the requirements specified in the GB 18596-.
(2) The method for fixing the nutrients in the liquid dung for pig breeding by using the calcium superphosphate is simple and easy to operate, does not need secondary addition, is an agricultural fertilizer with low price, is hydrolyzed to be acidic, and can reduce the pH value of the liquid dung, fertilize the liquid dung and improve the fertilizer efficiency of the liquid dung when being added into the liquid dung. After the liquid dung is added with calcium superphosphate and stored, the liquid dung is applied to the field of the pig breeding, the crop yield can be improved, the ammonia gas emission and the nitrogen leaching loss in the farmland can be reduced, and the ecological environment benefit is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph comparing ammonium nitrogen concentration and ammonia gas emission flux in test example 1 of the present invention;
FIG. 2 is a graph comparing the ammonium nitrogen concentration and the ammonia gas emission flux in test example 2 of the present invention.
Detailed Description
The technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a more typical embodiment of the present invention, a method for holding nutrients in liquid manure from pig breeding is provided, which comprises: slowly adding calcium superphosphate into the livestock and poultry manure water in the adjusting tank, continuously stirring, and adjusting the pH value of the livestock and poultry manure water to be within the range of 6.0-6.5; wherein the adding amount of the calcium superphosphate is 2-5.5% of the mass fraction of the livestock and poultry manure water. Then the livestock manure water added with the calcium superphosphate is pumped into a storage pool to be stored for at least 30 days.
The pig manure water comprises manure water generated by dry manure cleaning in a pig farm and one or more of liquid parts of water-washed manure and water-soaked manure after solid-liquid separation in the pig farm. The original pH value of the pig manure water is between 6.5 and 8.5, and the solid content is less than 5 percent. The particle size of the calcium superphosphate is less than 80 meshes; and is added into the pig manure water in a slow splashing way. The adjusting tank is provided with a floating cylinder type stirrer.
Example 1
1m is3And (3) introducing the pig manure water for pig breeding into an adjusting tank, adding 25kg of calcium superphosphate in total, continuously stirring, adjusting the pH of the manure water to 6.5, and introducing the manure water added with the calcium superphosphate into a storage tank for storage after the pH is adjusted. The pig breeding liquid dung is derived from the liquid dung of a pig farm by a dry manure cleaning process, the liquid dung is not subjected to solid-liquid separation, the initial pH of the liquid dung without adding calcium superphosphate is 8.48, the ammonium nitrogen is 1094.35mg/L, and the ammonia gas discharge flux is 22.02mg/m2Per hour, solid content 1.08%, fecal coliform number 5.4 x 105MPN/L. The test storage time is 30 days.
After 30 days of storage, the pH of the liquid dung added with the calcium superphosphate is 6.88, the ammonium nitrogen concentration is 823.9mg/L, and the ammonia emission flux is 6.40mg/m2The fecal coliform number is 1.7 x 103MPN/L。
Example 2
1m is3And (3) introducing the pig manure water for pig breeding into an adjusting tank, adding 40kg of calcium superphosphate in total, continuously stirring, adjusting the pH of the manure water to 6.0, and introducing the manure water added with the calcium superphosphate into a storage tank for storage after the pH is adjusted. The pig breeding liquid dung is derived from the liquid dung of a pig farm by a dry manure cleaning process, the liquid dung is not subjected to solid-liquid separation, the initial pH of the liquid dung without adding calcium superphosphate is 8.3, the ammonium nitrogen is 1035.35mg/L, and the ammonia gas discharge flux is 20.35mg/m2Per hour, solid content 1.5%, fecal coliform number 4.8 x 105MPN/L. The test storage time is 30 days.
After 30 days of storage, the pH of the liquid dung added with the calcium superphosphate is 6.68, the ammonium nitrogen concentration is 747.2mg/L, and the ammonia emission flux is 11.09mg/m2The fecal coliform number is 9.2 x 103MPN/L。
Test example 1
To 1m3Adding concentrated sulfuric acid into pig manure water as control group, and adding concentrated sulfuric acid into pig manure water of 1m3Clear water is added into pig manure water for pig breeding to serve as a blank group. The specific method is the same as that in example 1 in the control group and the blank group, wherein the pH of the liquid dung in the control group is adjusted to be 6.5. The initial pH of the liquid dung is 8.48, the ammonium nitrogen is 1094.35mg/L, and the ammonia gas discharge flux is 22.02mg/m2Per hour, solid content 1.08%, fecal coliform number 5.4 x 105MPN/L. Test ofThe storage time is 30 days.
Through detection, in a control group, after the liquid dung added with concentrated sulfuric acid is stored for 30 days, the pH value is 8.41, the ammonium nitrogen concentration is 531.0mg/L, and the ammonia gas emission flux is 17.34mg/m2The fecal coliform number is 0.79 x 103MPN/L. In the blank group, after the liquid dung added with clear water is stored for 30 days, the pH value is 8.82, the ammonium nitrogen concentration is 409.5mg/L, and the ammonia gas emission flux is 33.15mg/m2The fecal coliform number is 1.1 x 103MPN/L. Comparing the pH value, the ammonium nitrogen concentration, the ammonia gas discharge flux and the faecal coliform number of the liquid dung which is stored for 30 days in the control group and the blank group with those in the example 1 respectively, the ammonia nitrogen holding rate of the treatment added with the calcium superphosphate after being stored for 30 days is improved by 55.1 percent compared with the control group, is improved by 101.2 percent compared with the blank group, and the ammonia gas discharge flux is reduced by 63.1 percent compared with the control group and is reduced by 80.7 percent compared with the blank group. A graph comparing the ammonium nitrogen concentration and the ammonia emission flux was obtained as shown in fig. 1.
Test example 2
To 1m3Adding concentrated sulfuric acid into pig manure water as control group, and adding concentrated sulfuric acid into pig manure water of 1m3Clear water is added into pig manure water for pig breeding to serve as a blank group. The specific method is the same as that in example 2 in the control group and the blank group, wherein the pH of the liquid dung in the control group is adjusted to be 6.0. The initial pH of the liquid dung is 8.3, the ammonium nitrogen is 1035.35mg/L, and the ammonia gas discharge flux is 20.35mg/m2Per hour, solid content 1.5%, fecal coliform number 4.8 x 105MPN/L. The test storage time is 30 days.
Through detection, in a control group, after the liquid dung added with concentrated sulfuric acid is stored for 30 days, the pH value is 8.33, the ammonium nitrogen concentration is 635.2mg/L, and the ammonia gas emission flux is 18.66mg/m2The fecal coliform number is 0.94 x 103MPN/L. In the blank group, after the liquid dung added with clear water is stored for 30 days, the pH value is 8.82, the ammonium nitrogen concentration is 409.5mg/L, and the ammonia gas emission flux is 33.15mg/m2The fecal coliform number is 1.1 x 103MPN/L. Comparing the pH value, the ammonium nitrogen concentration, the ammonia gas emission flux and the faecal coliform number of the liquid dung of the control group and the blank group which are stored for 30 days with those of the example 2 respectively, the ammonia nitrogen holding rate of the treatment added with the calcium superphosphate after being stored for 30 days is improved by 17.6 percent compared with that of the control group and is improved by compared with that of the blank groupThe white group is improved by 82.5 percent, and the emission flux of ammonia gas is reduced by 40.5 percent compared with the control group and is reduced by 66.5 percent compared with the blank group. A graph comparing the ammonium nitrogen concentration and the ammonia emission flux was obtained as shown in fig. 2.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A method for fixing and holding the nutrients of the liquid dung for pig breeding is characterized by comprising the following steps: slowly adding calcium superphosphate into the pig manure water in the adjusting pool, continuously stirring, and adjusting the pH value of the pig manure water to be within the range of 6.0-6.5; wherein the adding amount of the calcium superphosphate is 2 to 5.5 percent of the mass fraction of the pig manure water.
2. The method for holding the nutrients in the liquid manure for pig breeding according to claim 1, wherein the method comprises the following steps: and further comprises the step of introducing the livestock manure water added with the calcium superphosphate into a storage pool for storage for at least 30 days.
3. The method for holding the nutrients in the liquid manure for pig breeding according to claim 1 or 2, wherein the method comprises the following steps: the adding amount of the calcium superphosphate is 4-5% of the mass fraction of the raw pig manure water.
4. The method for holding the nutrients in the liquid manure for pig breeding according to claim 1, wherein the method comprises the following steps: the pig manure water comprises manure water generated by dry manure cleaning of a pig farm and one or more of liquid parts of water-washed manure and water-soaked manure after solid-liquid separation in the pig farm.
5. The method for holding the nutrients in the liquid manure for pig breeding according to claim 1, wherein the method comprises the following steps: the original pH value of the pig manure water is between 6.5 and 8.5, and the solid content is less than 5 percent.
6. The method for holding the nutrients in the liquid manure for pig breeding according to claim 1, wherein the method comprises the following steps: the particle size of the calcium superphosphate is less than 80 meshes; and is added into the pig manure water in a slow splashing way.
7. The method for holding the nutrients in the liquid manure for pig breeding according to claim 1, wherein the method comprises the following steps: and a floating cylinder type stirrer is arranged in the adjusting tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911141966.6A CN110713420A (en) | 2019-11-20 | 2019-11-20 | Method for fixing nutrients in liquid dung for pig breeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911141966.6A CN110713420A (en) | 2019-11-20 | 2019-11-20 | Method for fixing nutrients in liquid dung for pig breeding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110713420A true CN110713420A (en) | 2020-01-21 |
Family
ID=69215486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911141966.6A Pending CN110713420A (en) | 2019-11-20 | 2019-11-20 | Method for fixing nutrients in liquid dung for pig breeding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110713420A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112537891A (en) * | 2020-10-15 | 2021-03-23 | 浙江省海洋水产研究所 | Ecological purification device for treating excrement of culture |
| CN113683255A (en) * | 2021-07-07 | 2021-11-23 | 安徽师范大学 | Livestock and poultry breeding wastewater storage method based on farmland utilization |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613223A (en) * | 2009-07-07 | 2009-12-30 | 吉林农业大学 | With calcium superphosphate is that amendment reduces the application method that ammonia discharges in the industrial composting of chicken manure is produced |
| CN101696137A (en) * | 2009-11-05 | 2010-04-21 | 湖南农业大学 | Deodorant nitrogen-conserving conditioner of livestock manure compost and using method |
| CN107311725A (en) * | 2017-07-25 | 2017-11-03 | 安徽海东环保科技有限公司 | A kind of pig manure method applied to by septic tank |
-
2019
- 2019-11-20 CN CN201911141966.6A patent/CN110713420A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613223A (en) * | 2009-07-07 | 2009-12-30 | 吉林农业大学 | With calcium superphosphate is that amendment reduces the application method that ammonia discharges in the industrial composting of chicken manure is produced |
| CN101696137A (en) * | 2009-11-05 | 2010-04-21 | 湖南农业大学 | Deodorant nitrogen-conserving conditioner of livestock manure compost and using method |
| CN107311725A (en) * | 2017-07-25 | 2017-11-03 | 安徽海东环保科技有限公司 | A kind of pig manure method applied to by septic tank |
Non-Patent Citations (1)
| Title |
|---|
| 罗一鸣等: "过磷酸钙添加剂对猪粪堆肥温室气体和氨气减排的作用", 《农业工程学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112537891A (en) * | 2020-10-15 | 2021-03-23 | 浙江省海洋水产研究所 | Ecological purification device for treating excrement of culture |
| CN112537891B (en) * | 2020-10-15 | 2021-12-14 | 浙江省海洋水产研究所 | Ecological purification device for treating excrement of culture |
| CN113683255A (en) * | 2021-07-07 | 2021-11-23 | 安徽师范大学 | Livestock and poultry breeding wastewater storage method based on farmland utilization |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yellezuome et al. | Mitigation of ammonia inhibition in anaerobic digestion of nitrogen-rich substrates for biogas production by ammonia stripping: A review | |
| CN102964149B (en) | Pollution abatement method for livestock and poultry farm | |
| Manyi-Loh et al. | Microbial anaerobic digestion: process dynamics and implications from the renewable energy, environmental and agronomy perspectives | |
| Sutaryo et al. | Thermophilic anaerobic co-digestion of separated solids from acidified dairy cow manure | |
| CN103319061A (en) | Method for improving comprehensive effect of anaerobic digestion treatment of breeding manure | |
| CN110713420A (en) | Method for fixing nutrients in liquid dung for pig breeding | |
| CN101319230A (en) | Method for accelerating anaerobic fermentation of organic waste water or organic castoff to prepare sludge gas | |
| CN110981579A (en) | Method for preparing organic fertilizer by combining anaerobic fermentation of red mud | |
| CN108947098A (en) | The processing method of pig breeding wastewater | |
| O’Flaherty et al. | Anaerobic digestion of agricultural residues | |
| Jin et al. | Enhancement of autothermal thermophilic aerobic digestion by chemical approach: Dosage of ferric nitrate on disinhibition of excessive volatile fatty acids | |
| CN110903133A (en) | Method for fixing cow dung nutrients by alum | |
| Yasin et al. | ANAEROBIC DIGESTION OF BUFFALO DUNG, SHEEP WASTE AND POULTRY LITTER FOR BIOGAS PRODUCTION. | |
| Yue et al. | Effects of biogas slurry reflux mode and reflux rate on methane production by mixed anaerobic digestion of corn straw and pig manure | |
| CN114632411A (en) | Carbon nitrogen emission reduction method applied to urine, excrement and sewage in pig farm | |
| CN110029132A (en) | A kind of method that cow dung prepares biogas with corn stover hybrid anaerobic fermentation | |
| CN102517338B (en) | Method for producing biochemical humic acid through microbial fermentation of furfural residue | |
| CN103523917A (en) | Method for improving biogas slurry SBR (styrene butadiene rubber) treatment process efficiency by utilizing zeolite synthesized from fly ash | |
| CN103723866A (en) | Method for recycling nitrogen and phosphorus from anaerobic fermentation liquid | |
| CN101830616A (en) | Method for removing heavy metal Cr from sludge by bioleaching | |
| CN110937677A (en) | Method for washing breeding house with breeding wastewater for recycling | |
| Ogunwande et al. | Effects of co-digesting swine manure with chicken manure on biogas production | |
| CN103466791A (en) | Improved pre-acidifying treatment process of citric acid wastewater | |
| Melville et al. | Anaerobic digestion | |
| Lucas | Biogas production from potato peel waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200121 |