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Sewage treatment method by sludge return digestion decrement

A sewage treatment method and sludge return technology, applied in water/sludge/sewage treatment, anaerobic digestion treatment, biological sludge treatment, etc., can solve the sewage treatment load deviation, sewage volume and BOD load fluctuations, sewage treatment The impact of the normal operation of the plant and other issues, to achieve the effect of saving investment and easy operation

Inactive Publication Date: 2009-07-15
赵峰
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Problems solved by technology

In addition, there is another phenomenon that in some areas, the sewage treatment load of the sewage treatment plant deviates from the actual situation, and there are fluctuations in the amount of sewage and BOD load in the incoming raw water, which also affects the normal operation of the sewage treatment plant.

Method used

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  • Sewage treatment method by sludge return digestion decrement

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Embodiment Construction

[0016] Implementation mode As shown in the figure, the process flow of sewage and sludge treatment, according to the design parameters and empirical values ​​of the sewage treatment plant, calculate the amount of surplus sludge generated in the sewage treatment system daily and the sludge sedimentation volume of the raw sewage water. In the anaerobic state of sludge degradation and fermentation cycle, the cumulative volume of fermented sludge is calculated according to 90 days, and then the sludge increase in a certain stage is estimated according to the stabilized and balanced digestion state of digested sludge. The sum of the two is the anaerobic sedimentation tank The total volume of the sludge load, and finally the volume of the anaerobic sedimentation tank is calculated according to the sum of the sewage volume and the sludge volume. The raw sewage water 1 after the rough treatment enters the anaerobic sedimentation tank 2 and pushes forward. On the one hand, the suspended so...

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Abstract

The invention relates to a sewage processing method of mud backflow digestion and reduction, which is mainly characterized in that in the system of a sewage processing plant, a primary deposition pool uses an anaerobic deposition pool 2, original sewage 1 flows into an anaerobic deposition pool 2, the outlet water 3 of the anaerobic deposition pool enters a sewage processing system 4, the sewage processing system discharges purified water and simultaneously inputs residual mud 5 to the anaerobic deposition pool 2, the lower part of the anaerobic pool 2 is an accumulated mud deposition area of which the volume satisfies the volume for stabilizing and reducing the total accumulated mud amount in the mud staying period. The mud is stayed in the anaerobic deposition pool for a long time to achieve the purpose of cleaning and discharging out stabilized and reduced mud in the design deadline. The method simplifies technology, saves investment, has simple technical operation and control, realizes the reduction and the stabilization of the mud, and improves the inlet water biochemical stability of sewage processing.

Description

Technical field: [0001] The invention belongs to the category of sewage treatment in the field of environmental protection, and relates to a sewage treatment method formed by reverse circulation digestion and reduction of excess sludge in sewage treatment. technical background: [0002] The invention is applied to sewage treatment, and is mainly suitable for a sewage treatment method that circulates and digests the surplus sludge generated in the sewage treatment process in a treatment system to realize sludge reduction. In sewage treatment, on the one hand, sewage is purified through various working methods, and part of the organic matter is degraded; on the other hand, the organic matter is solidified in the form of sludge, which is equivalent to the concentration of pollutants. Therefore, sewage treatment is a purification process of sewage, not a complete pollution treatment process. Only by eliminating pollutants in the form of sludge at the same time can the purpose of wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/28C02F1/52C02F11/04
Inventor 赵峰
Owner 赵峰
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