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Combined sewage treatment device

A kind of sewage treatment equipment and combined technology, applied in the direction of multi-stage water/sewage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. Handling capacity and other issues, to achieve the effect of small footprint, low noise, and overcome the problem of sludge bulking

Inactive Publication Date: 2009-11-04
TAWA BEIJING
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AI Technical Summary

Problems solved by technology

In order to maintain a certain amount of dissolved oxygen in the biological turntable, the immersion area of ​​the disc is generally only 40%, which greatly reduces the processing capacity of the biological turntable and correspondingly increases the occupied area
In addition, it is difficult to achieve biological nitrogen and phosphorus removal with the application of a single biological turntable

Method used

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Embodiment Construction

[0032] Below with the accompanying drawings ( Figure 1-Figure 2 ) to illustrate the present invention.

[0033] The combined sewage treatment equipment of the present invention is a treatment system integrating the functions of nitrification, denitrification, biological phosphorus removal and mud-water separation. The aerobic device organically combines the advantages of the suspension growth technology and the fixed growth technology, and combines the anaerobic and aerobic in one device, and the two promote each other. Under the same equipment conditions, the sewage of this device The purification effect and processing capacity are higher than ordinary biological turntables, low energy consumption, no peculiar smell, strong impact load resistance, and good sludge settlement performance.

[0034] The biological phosphorus removal zone is the anaerobic section of the system, which is mainly used for the release of phosphorus. The sewage first enters the biological phosphorus ...

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Abstract

The invention provides a combined sewage treatment device which integrates the activated sludge process and the biofilm process, organically combines the advantages of the suspension growth technology and the attached growth technology, combines anaerobic and aerobic properties in one device, leads the two to promote each other and improves the sewage treatment capacity and the treatment efficiency. The combined sewage treatment device is characterized in that the combined sewage treatment device comprises a biological phosphorus removal zone, a denitrification zone, a nitrification zone and a sludge-water separation zone positioned in a tank body structure, the biological phosphorus removal zone is connected with a sewage inlet pipe, the sludge-water separation zone is provided with a water outlet pipe, a residual sludge discharge pipe and a return sludge hole, and the return sludge hole leads to the biological phosphorus removal zone and / or the denitrification zone; and a rotating biological disk is arranged in the nitrification zone.

Description

technical field [0001] The invention belongs to the sewage treatment technology in the discipline of environmental engineering, in particular to a combined sewage treatment equipment integrating activated sludge method and biofilm method. Background technique [0002] At present, biological treatment is the main method of sewage treatment, which can be divided into activated sludge method and biofilm method. Due to the mature technology and reliable equipment, the activated sludge method is widely used in large-scale sewage treatment plants, but it has problems of unstable operation in small and medium-sized sewage treatment, prone to sludge bulking, and high energy consumption. The main forms of biofilm method are: biological filter, biological turntable and biological contact oxidation method, etc., which are mostly used for small and medium-sized sewage treatment. Due to the characteristics of high treatment efficiency, convenient maintenance and management, and low oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F3/12C02F3/10
CPCY02W10/10
Inventor 袁国文
Owner TAWA BEIJING
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