Method for processing liquid dung of pig farm through flocculation oxidizing resistance dimishing method

A technology for pig farms and manure, applied in chemical instruments and methods, animal husbandry wastewater treatment, water/sewage multi-stage treatment, etc., can solve the problem of no decomposition-removal of manure, color, and odor that cannot reach the country Emission standards and other issues, to achieve the effect of low processing cost and saving investment

Inactive Publication Date: 2013-01-16
HUNAN AGRICULTURAL UNIV
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Problems solved by technology

[0005] Looking at the status quo of manure water treatment in domestic and foreign farms, it is not difficult to find that: the current treatment method does not effectively...

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  • Method for processing liquid dung of pig farm through flocculation oxidizing resistance dimishing method

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Embodiment 1

[0027] Pig manure discharged from a pig farm in Changsha County, Hunan Province, COD in the manure cr 、BOD 5 , SS, NH 3 Contents such as -H, T-P, T-N, malodorous pollutant, bacterium colony, heavy metal total copper and total zinc are shown in Table 1, and the results of manure water treatment are shown in Table 1 according to the method of the present invention. The discharge of manure and water from pig farms complies with the national standard (GB18596-2001) discharge standard.

[0028] Table 1 Filtrate detection results after raw manure water treatment

[0029] category Raw fecal water sample filtrate National standard Number of fecal coliform colonies (unit / L) 1.6×10 7 20 4000 Roundworm eggs (pcs / L) 500 not detected 1.0 Total copper (mg / L) 16.0 0.105 0.5 Total Zinc (mg / L) 36.2 0.140 1.5 COD cr (mg / L) 10981 88 100 SS(mg / L) 963 30 70 NH 3 -N (mg / L) 186 21.3 2...

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Abstract

The invention provides a method for processing liquid dung of a pig farm through a flocculation oxidizing resistance dimishing method. The method is used for degrading organic matter in liquid dung, reducing a chemical oxygen demand and ammonia and nitrogen values, removing harmful fungus, such as escherichia coli and other bacteria, and removing bad smelling, so that the processed liquid dung is ensured to be odorless and colorless, and the CODcr, NH3-N, T-P and T-N and other indexes exceed a national intensive discharge standard on the liquid dung of livestock and poultry industry based on a concept of upper state micro-electronics transfer and an oxidation-reduction micro reaction, so that harmless processing of the liquid dung is achieved. According to the method provided by the invention, follow-up processing resistance is reduced by flocculating dung residue, and then the organic matter in the liquid dung is degraded through a strong oxidation method; and a coagulation technology is also carried out, thus, various dissolved organic matters can be combined to obtain tightly-structured organic polymer to be sunken; and a filter press is utilized for quickly dewatering, therefore, the residue and water can be separated; and the method provided by the invention occupies a small floor area, is fast in speed, lower in cost and good in effect, and has obvious social benefit and environmental benefit.

Description

technical field [0001] The invention belongs to the technical field of environmental protection-pollutant treatment, and is a new method for deeply purifying and treating pig farm excrement. Based on the concept of high-energy state micro-electron transfer and redox micro-reaction, the method degrades organic matter in feces, reduces chemical oxygen demand and ammonia nitrogen value, kills harmful fungi such as E. The manure is colorless and odorless, COD cr , NH 3 -N, T-P, T-N and other indicators are all better than the discharge standards of the national intensive livestock and poultry farming manure treatment, and realize the harmless treatment of manure. Background technique [0002] Pig farm manure is composed of livestock and poultry urine, feces, feed residue and a large amount of washing water, containing a large amount of organic pollutants, pathogenic microorganisms and parasite eggs, with high CODcr and BOD5 values, high NH3-N concentration, dark color and smel...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F103/20
Inventor 李辉勇李成刘灿明李志光彭韬
Owner HUNAN AGRICULTURAL UNIV
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