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Process for treating dairy waste water

A dairy wastewater and treatment process technology, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of high power consumption of blast aeration and high organic content of dairy wastewater , unable to attract consumers and other problems, to achieve the effect of easy mass processing, low cost and beneficial environment

Inactive Publication Date: 2014-01-15
苏州腾辉环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of treating dairy wastewater on the market is direct aerobic treatment process, that is, biological contact oxidation method, activated sludge method and other good processes to treat dairy wastewater. The COD removal rate of this method can reach more than 90%, and the operation is stable. , but due to the high organic content of dairy wastewater, the blower aeration power consumption in the good sample process is high, the operating cost is high, and the economic benefit is relatively low, which cannot attract consumers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (a) Influent water: import dairy waste water, water quality is COD 2150mg / L, BOD 5 760mg / L, SS 255mg / L, animal and vegetable oil 475mg / L;

[0018] (b) Grille: waste water is introduced into the grid, the grid is divided into thick and thin, the gap between the grating bars of the coarse grid is 20mm, and the gap between the grating bars of the fine grid is 5mm;

[0019] (c) Adjustment: the waste water after the grid is introduced into the effective volume of 350m 3 The adjustment tank with reinforced concrete structure stirs the wastewater in the tank to prevent the sedimentation of suspended solids in the water, and the residence time is 10h;

[0020] (d) Hydrolysis and acidification: the water after being homogenized and flowed in the regulating tank is introduced into a size of 150m 3 The hydrolytic acidification tank with reinforced concrete structure degrades lactose into lactic acid and partially hydrolyzes protein under the action of lactic acid bacteria, wit...

Embodiment 2

[0025] (a) Influent water: import dairy waste water, water quality is COD 2300mg / L, BOD 5 730mg / L, SS 180mg / L, animal and vegetable oil 490mg / L;

[0026] (b) Grille: waste water is introduced into the grid, the grid is divided into thick and thin, the gap between the grating bars of the coarse grid is 22mm, and the gap between the grating bars of the fine grid is 7mm;

[0027] (c) Adjustment: the waste water after the grid is introduced into the effective volume of 370m 3 The adjustment tank with reinforced concrete structure stirs the wastewater in the tank to prevent the sedimentation of suspended solids in the water, and the residence time is 11 hours;

[0028] (d) Hydrolysis and acidification: the water after being homogenized and flowed in the regulating tank is introduced into a size of 165m 3 The hydrolytic acidification tank with reinforced concrete structure degrades lactose into lactic acid under the action of lactic acid bacteria, partially hydrolyzes protein, an...

Embodiment 3

[0033] (a) Influent water: import dairy waste water, water quality is COD 1900mg / L, BOD 5 700mg / L, SS 100mg / L, animal and vegetable oil 380mg / L;

[0034] (b) grid: introduce waste water into the grid, the grid is divided into thick and thin, the gap between the thick grid and the grid is 25mm, and the gap between the thin grid and the grid is 8mm;

[0035] (c) Adjustment: the waste water after the grid is introduced into the effective volume of 390m 3 The adjustment tank with reinforced concrete structure stirs the wastewater in the tank to prevent the sedimentation of suspended solids in the water, and the residence time is 12h;

[0036] (d) Hydrolysis and acidification: the water after being homogenized and flowed in the regulating tank is introduced into a size of 180m 3 The hydrolytic acidification tank with reinforced concrete structure degrades lactose into lactic acid and partially hydrolyzes protein under the action of lactic acid bacteria, with a residence time of ...

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PUM

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Abstract

The invention discloses a process for treating dairy waste water, comprising: water inlet, grating, regulation, hydrolysis acidification, aeration biological filter tank, clear water pool and water outlet. The process can effectively remove substances containing lipid in the waste water by a hydrolysis acidification technology, simultaneously can effectively reduce a COD content by an aeration biological filter tank technology, further raises water quality of water outlet, reduces pollution on environment, and raises quality of people life environment. The process provided by the invention has advantages of simple technology, low cost, obvious waste water purifying effect and benefit on environment, and is easy for mass treatment.

Description

technical field [0001] The invention relates to a wastewater purification process, in particular to a dairy wastewater treatment process. Background technique [0002] Dairy waste water refers to the waste water discharged in the production process of condensed milk, cheese, butter, dairy drinks, ice cream and dairy snacks. At present, milk is the main raw material for domestic dairy processing, so most of the organic components and nutrients in dairy wastewater come from milk and dairy products. At present, the method of treating dairy wastewater on the market is direct aerobic treatment process, that is, biological contact oxidation method, activated sludge method and other good processes to treat dairy wastewater. The COD removal rate of this method can reach more than 90%, and the operation is stable. , but due to the high organic content of dairy wastewater, the blower aeration power consumption in the good sample process is high, the operating cost is high, and the ec...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/34C02F3/28C02F3/02
CPCY02W10/10
Inventor 徐浩
Owner 苏州腾辉环保科技有限公司
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