Liquid fertilizer treatment method of pig farm urine and manure wastewater

A treatment method and technology for pig farms, which are applied in the fields of animal husbandry wastewater treatment, chemical instruments and methods, biological water/sewage treatment, etc. The effect of promoting proliferation and inhibiting bacteria

Inactive Publication Date: 2020-06-12
浙江亲水园生物科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the defects of complex process and low conversion rate of liquid fertilizer in the prior art in the process of treating urine foam waste water, the present invention pre-adds Bacillus subtilis activated bacteria in the urine foam cesspool below the pigsty, first in the low-lying solution Nitrification treatment is carried out under oxygen conditions, and then introdu

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  • Liquid fertilizer treatment method of pig farm urine and manure wastewater
  • Liquid fertilizer treatment method of pig farm urine and manure wastewater
  • Liquid fertilizer treatment method of pig farm urine and manure wastewater

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Embodiment 1

[0036] The treatment object of this embodiment is the pig manure produced by the large-scale pig farm in Tingfeng, Yongzhou, Hunan Province. The treatment method for the waste water produced by the urine foaming process includes the following steps. The process roadmap is as follows figure 1 Shown:

[0037] a) Before raising pigs, the Bacillus subtilis activated bacterial liquid is added to the urine foam cesspool below the pigsty, the dissolved oxygen in the urine foam cesspool is 0.05ppm, and the Bacillus subtilis strain is Bacillus subtilis QS1, which is It is preserved in the General Microorganism Center of China Committee for the Collection of Microorganisms, and the preservation number is CGMCCNO.17314. Table 1 is the cell morphology and physical and chemical test results of Bacillus subtilis QS1, Table 2 is the result of the 16S rRNA gene sequence determination of Bacillus subtilis QS1, and Table 3 is the result of the gyrB gene sequence determination of Bacillus subtil...

Embodiment 2

[0054] The treatment method of the waste water that the present embodiment produces for the urine foam process is basically the same as embodiment 1, the difference is:

[0055] The method of the present invention also includes step c) after the treatment step d) after the system runs stably, the water body in the liquid fertilizer manufacturing pool is regularly introduced into the aerobic pool. The purpose is to: use the liquid fertilizer manufacturing pool to contain a large amount of Bacillus subtilis, and the balance of the number of viable bacteria in the aerobic pool can be maintained by introducing it into the aerobic pool, so as to effectively maintain the efficient aerobic biochemical reaction efficiency. The treatment indicators of each treatment stage of the urine foam waste water in this embodiment are shown in Table 6, and the test results of the liquid fertilizer manufacturing pool are shown in Table 7.

[0056] Table 6 Treatment indicators of each treatment sta...

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Abstract

The invention discloses a liquid fertilizer treatment method of pig farm urine and manure wastewater and belongs to the field of excrement and urine wastewater treatment and recycling. The treatment mehtod comprises the following steps of: a) before pigs are herded into a pigsty, adding bacillus subtilis activated bacteria liquid into a urine and excrement pool, performing deodorization and nitration reaction pretreatment on pig excrement and urine, and keeping dissolved oxygen in the urine and excrement pool not less than 0.5 ppm during the pretreatment period; b) introducing the excrement and urine treated in the step a) into an aerobic tank at one time for aerobic aeration treatment, carrying out anaerobic denitrification treatment on effluent, carrying out advanced oxidation treatmenton the treated effluent, and discharging the treated effluent after reaching the standard; and c) periodically introducing the biochemical sludge generated by the anaerobic denitrification treatment into a liquid fertilizer manufacturing tank, culturing bacillus subtilis in the liquid fertilizer manufacturing tank in an aerobic aeration manner, and generating a liquid fertilizer in the liquid fertilizer manufacturing tank, wherein after the system operates stably, the liquid fertilizer in the liquid fertilizer manufacturing pool can be taken out according to the fertilizer requirements of thesurrounding planting industry to be used as a compound microbial fertilizer.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment of feces and urine, and in particular relates to a liquid fertilization treatment method for waste water soaked in urine and feces from pig farms. Background technique [0002] With the development of my country's animal husbandry and the increasingly fierce competition in the industry, the large-scale and intensive development of animal husbandry has become an inevitable trend. Large-scale pig farms have higher livestock and poultry breeding technology, and unified management reduces costs. , improve the economic benefits, but the environmental pollution caused by a large amount of concentrated excrement and sewage discharge is becoming more and more serious. The excrement and waste water of the aquaculture industry contain a large amount of organic matter, nitrogen, phosphorus, suspended matter and pathogenic bacteria. The stench is produced, which has a great impact on the quality o...

Claims

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Application Information

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IPC IPC(8): C02F9/14C05F3/00C05G5/20C02F103/20
CPCC02F1/78C02F3/302C02F2103/20C02F2303/02C05F3/00Y02A40/20
Inventor 丁庆
Owner 浙江亲水园生物科技有限公司
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