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AAO method sewage treatment experimental device and sewage treatment process

A technology of sewage treatment and experimental equipment, applied in biological treatment equipment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as carbon source competition, sludge return flow, nitrifying liquid return flow, etc., and achieve reduction effect of influence

Pending Publication Date: 2021-07-23
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of AAO method sewage treatment experimental device and sewage treatment process, to solve the problems of carbon source competition, sludge backflow and nitrifying liquid backflow etc. existing in the existing sewage treatment equipment and treatment process

Method used

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  • AAO method sewage treatment experimental device and sewage treatment process
  • AAO method sewage treatment experimental device and sewage treatment process
  • AAO method sewage treatment experimental device and sewage treatment process

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Embodiment

[0030] refer to figure 1 , an AAO sewage treatment experimental device, comprising: a raw water tank, an AAO main reaction area and a sedimentation tank arranged in sequence, the AAO main reaction area includes: anaerobic pool 1, anoxic pool 2 and aerobic pool 3; the raw water tank is externally connected For domestic sewage, the raw water tank is communicated with the anaerobic pool 1 through the first water pump 4, the raw water tank is communicated with the anoxic pool 2 through the second water pump 5, the sedimentation tank is communicated with the anaerobic pool 1 through the first sludge return pump 7, and the sedimentation tank The second sludge return pump 8 communicates with the anoxic tank 2; the aerobic tank 3 communicates with the anoxic tank 2 through the nitrifying liquid return pump 6; in this embodiment, the raw water tank is a cuboid with a size of 800 mm × 800 mm × 500 mm Box-shaped structure with an effective volume of 300L. The raw water tank is made of po...

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Abstract

The invention discloses an AAO method sewage treatment experiment device and a sewage treatment process, the experiment device comprises a raw water tank, an AAO main body reaction zone and a sedimentation tank which are arranged in sequence; the AAO main body reaction zone comprises an anaerobic tank, an anoxic tank and an aerobic tank; water is fed into the anaerobic tank and the anoxic tank at the same time in a multi-point water feeding manner; according to the invention, two reflux paths are arranged, and a mode of combining the reaction tank and the additional reaction tank is adopted in the process flow; the problems of carbon source competition, sludge backflow, nitrification liquid backflow and the like in an existing sewage treatment device and an existing treatment process are solved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an AAO method sewage treatment experimental device and a sewage treatment process. Background technique [0002] The AAO process is a sewage treatment process that adds an anaerobic pool A on the basis of the A / O process and integrates the anaerobic zone-anoxic zone-aerobic zone. This process can simultaneously remove nitrogen and phosphorus, and the process has The operation process is relatively simple, the operation cost is low, and the sludge bulking is not easy to occur, so it is widely used in the field of wastewater treatment. The principle of the AAO process is to use various microorganisms in the activated sludge to achieve the decomposition of organic matter and the removal of nitrogen and phosphorus through a series of actions under anaerobic and aerobic conditions. However, since the process uses a single sludge system, the composition of microorganisms and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/302C02F2203/006
Inventor 刘扬谭涛朱士江王芳孟婉王竹
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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