A kind of dairy cow breeding wastewater treatment process

A technology for aquaculture wastewater and a treatment process, which is applied in the field of dairy cattle breeding wastewater treatment technology, can solve the problems of high technical and economic difficulties in the discharge of ammonia nitrogen up to the standard, no enhanced denitrification function, poor wastewater treatment effect, etc., and achieves improved reaction efficiency, The effect of shortening the reaction cycle

Active Publication Date: 2021-03-19
SHENYANG ACAD OF ENVIRONMENTAL SCI
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a treatment process for dairy farm wastewater, which solves the problems in the prior art that the overall treatment effect of dairy farm wastewater is not good, there is no enhanced denitrification function, and there are still great technical and economic difficulties in the discharge of ammonia nitrogen up to the standard

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  • A kind of dairy cow breeding wastewater treatment process
  • A kind of dairy cow breeding wastewater treatment process
  • A kind of dairy cow breeding wastewater treatment process

Examples

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Embodiment 1

[0041] A dairy farming wastewater treatment process, comprising the following steps:

[0042] Step 1, pretreatment of dairy farming wastewater

[0043] Step 1.1, passing through the grille: Collect the cow urine, floor washing water, milking equipment cleaning water and farm domestic sewage produced in the dairy farm, and then pass through the rotary rake-toothed mechanical grille with a grid spacing of 40mm to remove Coarse solid debris in the waste water is discharged from the grid;

[0044] Step 1.2, homogenization and equalization: the water from the grille enters the storage and adjustment tank, and the pool water is stirred by the stirring device installed in the storage and adjustment tank to make the water quality uniform and obtain high-concentration raw water;

[0045]Step 1.3, solid-liquid separation: the high-concentration raw water is transported to the solid-liquid separator through a lifting pump, and filtered through a high-density screen with a size of 80 mes...

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Abstract

The invention discloses a wastewater treatment process for dairy farming, which comprises the following steps: pretreatment, secondary treatment and deep treatment. The pretreatment includes grating, homogenizing and averaging amount, solid-liquid separation, coagulation and air flotation; the secondary treatment is the combination of anaerobic treatment and aerobic treatment, including hydrolysis acidification, anaerobic digestion and aerobic biochemistry; and the deep treatment includes BAF and disinfection. The treated wastewater is directly discharged or irrigated. The pretreatment process of the wastewater treatment process for dairy farming effectively removes a large amount of suspended substance and sediment in the cow breeding wastewater, the secondary treatment process can effectively remove organic pollutants and other nutrients such as nitrogen and phosphorus, and the deep treatment can further enhance the nitrogen removal effect on the basis of further removal of organic pollutants, an effluent meets the standard of discharge and the standard of agricultural irrigation.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a dairy cow breeding wastewater treatment process. Background technique [0002] With the improvement of people's living standards, the demand for milk products is also increasing, and my country's dairy farming industry is also booming. However, a large amount of wastewater will be produced in the process of dairy farming, such as cow manure, cowshed flushing water, milking parlor flushing water, factory domestic sewage, silage leachate, and boiler drainage, etc. These wastewaters contain ultra-high ammonia nitrogen, COD And total phosphorus, etc., their arbitrary discharge or treatment not up to standard discharge will seriously pollute the surface water and groundwater environment around the farm, and threaten the health of residents near the dairy farm. [0003] Due to the serious sewage pollution of dairy farms, the CODcr concentration is as high as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/20
CPCC02F1/001C02F1/24C02F1/281C02F1/50C02F1/5236C02F1/56C02F3/02C02F3/1263C02F3/28C02F3/2846C02F9/00C02F2103/20C02F2209/04C02F2209/06C02F2301/08
Inventor 王允妹单连斌赵勇娇魏春飞张磊
Owner SHENYANG ACAD OF ENVIRONMENTAL SCI
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