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Integrated sewage treatment tank and sewage treatment method for improving aao

A kind of sewage treatment pool and integrated technology, applied in the field of integrated improved AAO sewage treatment pool and sewage treatment, can solve the problems such as the effect of AAO process, which is difficult to remove nitrogen and phosphorus, long sewage residence time, and small sludge circulation ratio, etc. Achieve the effect of low sewage treatment cost, reduce sewage treatment cost, and save energy consumption

Active Publication Date: 2017-06-13
迈邦(北京)环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] 1. The AAO process is difficult to achieve good nitrogen and phosphorus removal effects at the same time;
[0015] 2. The sludge circulation ratio is small and the stability is poor;
[0016] 3. To treat the sewage to meet the standard, the residence time of the sewage is long and the treatment efficiency is low

Method used

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  • Integrated sewage treatment tank and sewage treatment method for improving aao
  • Integrated sewage treatment tank and sewage treatment method for improving aao
  • Integrated sewage treatment tank and sewage treatment method for improving aao

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Experimental program
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Embodiment 1

[0039] see figure 1, this embodiment provides an integrated sewage treatment pond for improving AAO, including anaerobic dephosphorization zone, hypoxic aeration zone, and enhanced aeration zone that are sequentially adjacent and integrally arranged and separated by a partition wall and sedimentation zone 2, each partition wall is respectively provided with water flow channels; the anaerobic phosphorus removal zone is divided into the first anaerobic phosphorus removal zone 401 and the second anaerobic phosphorus removal zone 402 through the first partition wall 3, and the The two ends of the first partition wall 3 are respectively provided with water flow channels, so that the mixed solution in the first anaerobic phosphorus removal area 401 can enter the second anaerobic phosphorus removal area 402, and then in the second anaerobic phosphorus removal area 402 After the middle treatment, the other end of the second anaerobic phosphorus removal zone 402 is recycled to the firs...

Embodiment 2

[0047] see figure 1 , the present invention also provides a sewage treatment method for the integrated sewage treatment tank of the improved AAO, comprising the following steps:

[0048] S10. Transport the waste water to the first anaerobic dephosphorization zone 401 and mix it with the mixed solution circulated from the second anaerobic dephosphorization zone 402 to the first anaerobic dephosphorization zone 401, and then in the first anaerobic dephosphorization zone 401 and the second anaerobic phosphorus removal zone 402 carry out denitrification and anaerobic phosphorus release reactions in an absolutely anaerobic environment;

[0049] S20. Circulating most of the mixed solution treated in the second anaerobic phosphorus removal zone 402 to the water inlet of the first anaerobic phosphorus removal zone 404 to continue mixing with the influent water, and a small part of the mixed solution enters the first hypoxic exposure in turn. The gas zone 701 and the second low-oxygen...

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Abstract

The invention discloses an integrated sewage treatment pool and a sewage treatment method for improving AAO. The treatment pool includes an anaerobic dephosphorization area, a low-oxygen aeration area, Strengthen the aeration area and the sedimentation area; the anaerobic phosphorus removal area is divided into the first anaerobic phosphorus removal area and the second anaerobic phosphorus removal area through the first partition wall, and the low oxygen aeration area passes through the second partition wall It is divided into a first hypoxic aeration zone and a second hypoxic aeration zone; a sludge return channel is set between the sedimentation zone and the first anaerobic dephosphorization zone. The sewage treatment tank and the sewage treatment method of the present invention have the advantages of good nitrogen and phosphorus removal effects, good stability and high treatment efficiency.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to an integrated and improved AAO sewage treatment pool and a sewage treatment method. Background technique [0002] With the development of society, the problem of shortage of water resources is becoming more and more serious, and water will become an important factor restricting social development. People are also paying more and more attention to the development and improvement of water treatment technology. [0003] The sewage biological treatment process is a relatively common sewage treatment process, also known as the activated sludge process. Activated sludge process can be divided into aerobic method and anaerobic method. In the aerobic biological sewage treatment system, microorganisms use dissolved oxygen in water to oxidize and degrade organic pollutants in water, and then separate microorganisms and water to achieve the purpose of purifying sewage. [0004] AAO process is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 张华
Owner 迈邦(北京)环保工程有限公司