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Advanced treatment method and device for livestock breeding waste water

A livestock and poultry breeding and advanced treatment technology, applied in the field of advanced treatment of livestock and poultry breeding sewage, can solve the constraints on the research and popularization and application of advanced treatment of livestock and poultry breeding sewage, the water quality of the effluent can not meet the discharge requirements, and cannot be promoted and applied on a large scale To achieve the effect of facilitating construction and promotion, avoiding the accumulation of nitrite, and breaking through environmental restrictions

Inactive Publication Date: 2015-03-25
南宁绿智环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the low C / N ratio of aquaculture sewage requires a large amount of organic carbon sources as electron donors in the biological denitrification process. If the traditional process has C / N<2.5, denitrification will not be effective without additional organic carbon sources. However, if C / N<4, the volume of the denitrification container should be increased by 1.5-1.7 times; therefore, the traditional biological denitrification process shows a great limitations; while the traditional aerobic biological phosphorus removal process requires a large amount of power consumption and produces a large amount of excess sludge
[0004] At present, there are many studies on the treatment of livestock and poultry breeding sewage at home and abroad. Most of the structures adopt reinforced concrete structures, which are complex in structure and large in investment. Moreover, the treatment effect of most methods is not ideal. application, which restricts the research and popularization and application of advanced treatment of livestock and poultry breeding sewage

Method used

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  • Advanced treatment method and device for livestock breeding waste water
  • Advanced treatment method and device for livestock breeding waste water
  • Advanced treatment method and device for livestock breeding waste water

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A farm in Yulin City, with a breeding scale of 30,000 breeders, adopts the dry manure cleaning process, and discharges 20 cubic meters of sewage per day. The main pollutants of sewage CODcr is 5000-8000mg / L, ammonia nitrogen is 600-1000mg / L, SS is 5000-8000mg / L, and PH is 6-8.

[0040] Using the process method and device of the present invention, the process equipment is: water collection tank + solid-liquid separation device (1 set) + micro-aeration regulating tank + first-stage anaerobic ammonium oxidation reactor (1 set) + short-range nitrification reactor ( 1 set) + second stage anammox reactor (1 set) + denitrification phosphorus removal SBBR reactor (1 set).

[0041] The specific operation process is: the lifting pump 11 works according to the signal of the liquid level gauge 15, lifts the livestock and poultry manure in the sump 1 into the livestock and poultry manure solid-liquid separation device 2, and starts the solid-liquid extruder 21 at the same time, and ...

Embodiment 2

[0044] A farm in Yulin City has a breeding scale of 5,000 pigs, adopts the dry manure cleaning process, and discharges 80 cubic meters of sewage per day. The main pollutants of sewage CODcr is 5000-700mg / L, ammonia nitrogen is 600-1000mg / L, SS is 5000-8000mg / L, and PH is 6-8.

[0045] The specific operation process is as in embodiment 1.

[0046] Using the process method and device of the present invention, the process flow is a single group of multiple series combinations: water collection tank + solid-liquid separation device (1 set) + micro-aeration regulating tank + first-stage anammox reactor (3 sets) series) + short-range nitrification reactor (1 set) + second-stage anammox reactor (2 sets in series) + denitrification phosphorus removal SBBR reactor (2 sets in parallel).

[0047] The main indicators of sewage water quality treated by the above method are chemical oxygen demand (CODcr) ≤ 85mg / L, five-day biochemical oxygen demand (BOD 5 )≤18mg / L, ammonia nitrogen≤10mg / L...

Embodiment 3

[0049] A farm in Yulin City has a breeding scale of 12,000 pigs. It adopts the dry manure cleaning process and discharges 200 cubic meters of sewage per day. The main pollutants of sewage CODcr is 5000-750mg / L, ammonia nitrogen is 700-1000mg / L, SS is 5000-8000mg / L, and PH is 6-8.

[0050] The specific operation process is as in embodiment 1.

[0051] Adopting the process method and device of the present invention, the process flow is in the form of 2 groups in parallel, wherein the multiple series combinations of each group are: water collection tank + solid-liquid separation device (1 set) + micro-aeration regulating tank + first stage Anaerobic ammonia oxidation reactor (3 sets in series) + short-range nitrification reactor (1 set) + second-stage anammox reactor (2 sets in series) + denitrification phosphorus removal SBBR reactor (2 sets in parallel)

[0052] The main index of sewage water quality treated by the above method is chemical oxygen demand (CODcr) ≤ 80mg / L, five-...

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Abstract

The invention discloses an advanced treatment method and device for livestock breeding waste water. The advanced treatment device for the livestock breeding waste water is mainly formed by a waste water collecting pool, a livestock feces solid-liquid separation device, a slight aeration adjusting pool, an anaerobic ammonia oxidation reactor, a partial nitrification reactor and a denitrifying phosphorus removal SBBR. According to the advanced treatment device for the livestock breeding waste water, abundant organic matters in the waste water are used as a denitrification carbon source, denitrification efficiency is high, the carbon source does not need to be added externally, and the advanced treatment device for the livestock breeding waste water has a partial nitrification function, prevents nitrite from accumulating, and is suitable for treating the livestock breeding waste water with high ammonia nitrogen and high COD and high in capacity of synchronously removing the COD, total nitrogen, the ammonia nitrogen and total phosphorous; furthermore, the technology is simple, energy consumption is low, and the amount of generated sludge is small; the device is modularized and is convenient to manufacture and mount, and the whole set of the device is flexible in assembling, simple, small in investment, little in occupied space, capable of breaking through the limitation of the environment and convenient to construct and popularize.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method and device for advanced treatment of livestock and poultry breeding sewage. Background technique [0002] Livestock and poultry breeding wastewater has typical "three highs" characteristics, high content of organic matter, high content of ammonia nitrogen, high content of suspended solids, complex wastewater components, and large fluctuations in water quality and quantity. There are many applications and researches on the treatment of aquaculture sewage by traditional anaerobic + aerobic process, but most of them have low operating load, low ability to remove ammonia nitrogen, total nitrogen, and total phosphorus, large infrastructure investment, high operating cost, and difficult management. , the disadvantage of heavy burden on enterprises. [0003] Due to the particularity of farming manure, how to effectively separate manure from sewage and simpli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCY02W10/37
Inventor 林叶俊龙卢誉远周淑珍林应强熊庆明黄福川卢朝霞
Owner 南宁绿智环保科技有限公司