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Multi-section AO enhanced denitrification sewage treatment system and application method thereof

A sewage treatment system, multi-stage technology, applied in the direction of special compound water treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of restricting the removal rate of total nitrogen, and achieve the effect of increasing the hydraulic retention time

Pending Publication Date: 2021-01-01
福州创源同方水务有限公司
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Problems solved by technology

In the general AAO process, considering the efficient removal of major pollutants such as COD and ammonia nitrogen, the hydraulic retention time in the aerobic section is often designed to be much longer than the hydraulic retention time in the anoxic section, and the low COD concentration in the influent restricts the removal of total nitrogen. Rate

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  • Multi-section AO enhanced denitrification sewage treatment system and application method thereof

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Embodiment Construction

[0029] In order to make the above-mentioned features and advantages of the present invention easier to understand, the following specific embodiments are described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

[0030] refer to figure 1 .

[0031] In a preferred embodiment of the present invention: a multi-stage AO enhanced denitrification sewage treatment system, including a front anoxic section, a first aerobic section, a middle anoxic section and a second aerobic section arranged in sequence along the sewage flow direction part.

[0032] In this embodiment, in order to control the water flow velocity, the anoxic pool at the front end includes an anoxic pool, and five partitions are arranged in the anoxic pool, and the five partitions divide the anoxic pool into six anoxic compartments equally. , from right to left are the first to sixth anoxic compartments, the separators are provided with water outlets to realize...

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Abstract

The multi-section AO enhanced denitrification sewage treatment system comprises a front-end anoxic section, a first aerobic section, a middle anoxic section and a second aerobic section which are sequentially arranged in the sewage flowing direction. Meanwhile, the invention further discloses an application method of the sewage treatment system based on multi-stage AO enhanced denitrification. Compared with the traditional AAO treatment process, the method has the advantages of 1) an anaerobic section being canceled, and adopting an anoxic-aerobic (AO) enhanced denitrification process; 2) adjusting the hydraulic retention time ratio of the anoxic zone to the aerobic zone, increasing the hydraulic retention time of the anoxic zone, and reducing the hydraulic retention time of the aerobic zone, and 3) adding a multi-point carbon source, through a series of measures, improving to a multi-stage AO enhanced denitrification process so as to enhance the denitrification capability and improvethe denitrification efficiency.

Description

technical field [0001] The invention relates to a multi-stage AO enhanced denitrification sewage treatment system and an application method thereof. Background technique [0002] Nitrogen removal in urban domestic sewage treatment is difficult and is also a research hotspot. The efficiency of nitrogen removal depends on the intensity of denitrification. In the AAO process, the improvement of nitrogen removal efficiency is mainly limited by the short hydraulic retention time and carbon Insufficient sources and other factors. In the general AAO process, considering the efficient removal of major pollutants such as COD and ammonia nitrogen, the hydraulic retention time in the aerobic section is often designed to be much longer than the hydraulic retention time in the anoxic section, and the low COD concentration in the influent restricts the removal of total nitrogen. Rate. Contents of the invention [0003] The purpose of the present invention is to provide a multi-stage A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/30C02F2305/06
Inventor 段凯波陈学松黄应杰林岗
Owner 福州创源同方水务有限公司
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