Treatment process of waste water of dairy products

A dairy wastewater treatment technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of large sludge discharge, difficulty in system operation, Long residence time and other problems, to achieve the effect of small sludge discharge, high treatment efficiency and reduced discharge

Inactive Publication Date: 2010-08-04
安徽南风环境工程技术有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, dairy products such as yogurt, fresh milk, pure milk, and milk powder have entered thousands of households at home and abroad, and have become indispensable nutrients for many people. However, there will be a certain amount of wastewater discharged during the processing of dairy products, mainly from bottled water. , brush irrigation, flushing water, etc. These wastewater contain a large amount of easily degradable substances, which can easily cause environmental pollution after discharge
[0003] In the prior art, physical and chemical methods such as air flotation, coagulation sedimentation, adsorption, etc. are first used to pretreat the wastewater, so that the milk solids in the wastewater such as milk fat, casein and other milk proteins, lactose,

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  • Treatment process of waste water of dairy products

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Experimental program
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Effect test

Embodiment 1

[0027] In dairy wastewater, suspended solids (SS), chemical oxygen demand (COD Cr ), biochemical oxygen demand (BOD 5 ), ammonia nitrogen (NH 3 The mass concentrations of -N) are 300-1000mg / L, 800-3000mg / L, 350-1500mg / L, 25-70mg / L, respectively;

[0028] a. First, the dairy waste water is passed through the grid channel to remove the floating matter in the waste water, and then the preliminary treatment of the homogeneous water quality and quantity is carried out through the regulating tank;

[0029] b. Then pump the preliminarily treated wastewater into the ABR reactor for degradation, and remove SS, COD, BOD, and NH in the wastewater through the ABR reactor 3 -N, a small amount of sludge discharged from the ABR reactor is discharged into the sludge tank, and then the sludge is sucked out for treatment;

[0030] c. Discharge the waste water degraded by the ABR reactor into the middle sedimentation tank for solid and liquid separation to remove COD, BOD and NH in the waste ...

Embodiment 2

[0035] In dairy wastewater, suspended solids (SS), chemical oxygen demand (COD Cr ), biochemical oxygen demand (BOD 5 ), ammonia nitrogen (NH 3 The mass concentration of -N) is respectively 600mg / L, 2500mg / L, 1500mg / L, 25mg / L;

[0036] a. First, the dairy waste water is passed through the grid channel to remove the floating matter in the waste water, and then the preliminary treatment of the homogeneous water quality and quantity is carried out through the regulating tank;

[0037] b. Then pump the preliminarily treated wastewater into the ABR reactor for degradation, and remove SS, COD, BOD, and NH in the wastewater through the ABR reactor 3 -N, a small amount of sludge discharged from the ABR reactor is discharged into the sludge tank, and then the sludge is sucked out for treatment;

[0038] c. Discharge the waste water degraded by the ABR reactor into the middle sedimentation tank for solid and liquid separation to remove COD, BOD and NH in the waste water 3 -N, the an...

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Abstract

The invention relates to the technical field of waste water treatment, in particular to a treatment process of waste water of dairy products, which comprises the following steps: firstly, removing floating materials in the waste water of the dairy products through a grid channel, and then carrying out primary treatment on the waste water through a regulating pond; degrading the waste water after primary treatment through an anaerobic baffled reactor (ABR), discharging the sludge obtained by degrading the waste water through the ABR into a sludge tank, and then pumping and transporting the sludge outward; discharging the waste water after ABR degradation into a middle sedimentation tank for solid-liquid separation, and discharging the waste water after separation in the middle sedimentation tank into an aerobic tank; then, aerating and degrading the waste water in the aerobic tank, and discharging the waste water after aeration treatment into a secondary sedimentation tank; and finally, carrying out solid-liquid separation on the waste water in the secondary sedimentation tank, and discharging the separated waste water after reaching standards. Thus, the treatment process of thewaste water of the dairy products, which is provided by the invention, has small discharge amount of the sludge and high treatment efficiency of the waste water.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a dairy wastewater treatment process. Background technique [0002] At present, dairy products such as yogurt, fresh milk, pure milk, and milk powder have entered thousands of households at home and abroad, and have become indispensable nutrients for many people. However, there will be a certain amount of wastewater discharged during the processing of dairy products, mainly from bottled water. , brush irrigation, flushing water, etc. These wastewaters contain a large amount of easily degradable substances, which can easily cause environmental pollution after discharge. [0003] In the prior art, physical and chemical methods such as air flotation, coagulation sedimentation, adsorption, etc. are first used to pretreat the wastewater, so that the milk solids in the wastewater such as milk fat, casein and other milk proteins, lactose, and inorganic salts are removed fro...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/28C02F3/02C02F3/30C02F1/52
CPCY02W10/10
Inventor 韩厚强王宏朱荣
Owner 安徽南风环境工程技术有限公司
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