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A bioelectrochemical method for removing pig manure odor

A bioelectrochemical and pig manure technology, applied in the field of bioelectrochemical deodorization, can solve problems such as soil, water and air non-point source pollution, damage to the surrounding ecological environment, and respiratory system hazards, achieving good application prospects and improving pig houses Environmental and low-cost effects

Active Publication Date: 2021-05-04
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because feces will emit a large amount of malodorous gas, it can cause adverse effects such as loss of appetite, irritability, poor immunity and decreased production performance in pigs; hydrogen sulfide, mercaptans, amines, etc. can directly affect the respiratory system, endocrine system, digestive system, etc. Cause harm, direct discharge will cause non-point source pollution of soil, water and air, thereby destroying the surrounding ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A bioelectrochemical method for removing pig manure odor, comprising the following steps:

[0032] (1) Add 10L of pig manure to the anaerobic fermentation tank, and at the same time add 5g of 2% hydrogen peroxide, 8g of ferrous oxide, 3g of dipotassium hydrogen phosphate, 20g of sodium acetate, 10g of sawdust, 10g of carbon powder, large intestine Bacillus suspension (optical density value: 1.5) 5g, shake well, add 50L culture medium, let stand for 5 days for anaerobic fermentation under temperature control at 30°C, control the pH to 6.5 during this process, and the oxidation-reduction potential (ORP) is 380mV, the microbial electrolyte mixture with high biological activity after domestication was obtained.

[0033] Wherein, the medium is composed of a carbon source, a nitrogen source and a trace element nutrient solution, the carbon source is a mixture of lactic acid and methanol in equal proportions, and the carbon source concentration is 5g / L; the nitrogen source is ...

Embodiment 2

[0039] A bioelectrochemical method for removing pig manure odor, comprising the following steps:

[0040] (1) Add 10L of pig manure to the anaerobic fermentation tank, and at the same time add 4.5g of 2.5% hydrogen peroxide, 7.5g of ferrous oxide, 2.5g of dipotassium hydrogen phosphate, 18g of sodium acetate, 8g of sawdust, and carbon powder to the pig manure 8g, 4.5g of Escherichia coli suspension (optical density value 1.5), shake well, add 40L culture medium, let it stand for 4 days for anaerobic fermentation at 27°C under temperature control, the process controls the pH to 6, and the oxidation-reduction potential (ORP ) is 370mV, and the microbial electrolyte mixture with higher biological activity after domestication is obtained.

[0041] Wherein, the medium is composed of a carbon source, a nitrogen source and a trace element nutrient solution, the carbon source is a mixture of lactic acid and methanol in equal proportions, and the carbon source concentration is 5g / L; th...

Embodiment 3

[0048] A bioelectrochemical method for removing pig manure odor, comprising the following steps:

[0049] (1) Add 10L of pig manure to the anaerobic fermentation tank, and add 5.5g of 2% hydrogen peroxide, 8.5g of ferrous oxide, 3.5g of dipotassium hydrogen phosphate, 22g of sodium acetate, 12g of sawdust, and carbon powder to the pig manure at the same time 12g, 5.5g of Escherichia coli suspension (optical density value 1.5), shake well, add 60L of culture medium, and let stand for 5 days for anaerobic fermentation at 47°C under temperature control. (ORP ) is 390mV, and the microbial electrolyte mixture with higher biological activity after domestication is obtained.

[0050] Wherein, the medium is composed of a carbon source, a nitrogen source and a trace element nutrient solution, the carbon source is a mixture of lactic acid and methanol in equal proportions, and the carbon source concentration is 5g / L; the nitrogen source is ammonium chloride, and the total nitrogen The ...

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Abstract

The invention discloses a bioelectrochemical method for removing pig manure odor, belonging to the technical field of bioelectrochemical deodorization. The method comprises the following steps: (1) adding pig manure into an anaerobic fermentation tank, and at the same time adding Escherichia coli suspension, culture medium, etc. The electrolytic mixture is inoculated into pig manure, and then the inoculated pig manure is placed in the anode electrolyzer, and pig manure is added to the cathode electrolyzer at the same time; (3) Potential is applied to the anode electrolyzer and medium is added for anaerobic cultivation , the odor of pig manure in the cathodic electrolyzer will be gradually removed during this process. In the present invention, by constructing a microbial electrolysis circuit, ammonium chloride is used as a nitrogen source to domesticate microbial mixed bacteria, so that the domesticated microorganisms can effectively decompose H in pig manure. 2 S, ammonia and other odor molecules, thereby realizing the effect of deodorizing pig manure. The method of the invention can obviously improve the environment of the pig house, and has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of bioelectrochemical deodorization, and in particular relates to a method for bioelectrochemical deodorization of pig manure. Background technique [0002] With the rapid development of the pig industry, a large amount of manure accumulated in pig farms has caused many environmental pollution problems, and it has also attracted more and more attention from researchers and farmers in the field of environmental improvement. Because feces will emit a large amount of malodorous gas, it can cause adverse effects such as loss of appetite, irritability, poor immunity and decreased production performance in pigs; hydrogen sulfide, mercaptans, amines, etc. can directly affect the respiratory system, endocrine system, digestive system, etc. Direct discharge will cause non-point source pollution of soil, water and air, thereby destroying the surrounding ecological environment. H in pig manure 2 S and NH 3 H 2 S co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/04C02F103/20
CPCC02F11/006C02F11/04C02F2103/20C02F2303/02
Inventor 周泳李子蓉王泽发陈腾殊陈一萍
Owner QUANZHOU NORMAL UNIV
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