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Aerobic device for short-distance backflow of high-concentration sludge and sewage treatment system

A sludge and high-concentration technology, applied in water/sludge/sewage treatment, biological water/sewage treatment, special treatment targets, etc., can solve the problem of high energy consumption of sludge return equipment, long sludge return path, and sludge Pipeline or sludge pump clogging, effluent water quality and other issues, to achieve the effect of improving space utilization, short return path, and accelerating sludge circulation

Active Publication Date: 2021-02-26
北京华宇辉煌生态环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] One of the objectives of the present invention is to propose an aerobic device and a sewage treatment system for short-distance return of high-concentration sludge, which solves the problem of sludge return equipment in the prior art caused by the installation of submersible sewage pumps and centrifugal pumps in secondary sedimentation tanks. High energy consumption, long sludge return path, easy clogging of sludge pipelines or sludge pumps, and poor effluent quality

Method used

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  • Aerobic device for short-distance backflow of high-concentration sludge and sewage treatment system
  • Aerobic device for short-distance backflow of high-concentration sludge and sewage treatment system
  • Aerobic device for short-distance backflow of high-concentration sludge and sewage treatment system

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Embodiment 1

[0035] This embodiment is attached in conjunction with the instructions Figure 1~3 The aerobic device for short-distance returning high-concentration sludge of the present invention will be described in detail.

[0036] The aerobic device for short-distance return of high-concentration sludge in this embodiment includes a shell 1, an aerobic tank 2 and a modular sedimentation tank 3, such as Figure 1~3 shown. Preferably, the aerobic tank 2 is located in the shell 1; the modular sedimentation tank 3 is immersed in the inside of the aerobic tank 2, and the bottom of the modular sedimentation tank 3 is located above the bottom of the aerobic tank 2, and the bottom of the modular sedimentation tank 3 is connected to the A mud return zone 4 is formed between the bottoms of the aerobic pool 2, such as figure 2 or 3. Preferably, the aerobic tank 2 is provided with a gas pipe 5 and a mud return pipe 6, and the air pipe 5 communicates with the mud return pipe 6 and provides gas f...

Embodiment 2

[0055] This embodiment describes in detail the flow of sewage treatment using the aerobic device for short-distance return of high-concentration sludge in any one of the technical solutions in embodiment 1.

[0056] Utilize the flow process that the aerobic device of short-distance returning high-concentration sludge of any technical scheme in embodiment 1 carries out sewage treatment comprises the following steps:

[0057] S1: The sewage to be treated enters the aerobic tank 2, where organic matter degradation, nitrification and phosphorus absorption occur, and oxygen is provided to the aerobic tank 2 through the aeration pipe 8 and aeration accessories 9.

[0058] S2: The sewage to be treated after organic matter degradation, nitrification and phosphorus absorption in the aerobic pool 2 enters the water inlet channel 14, and the sewage to be treated in the water inlet channel 14 passes through the trapezoidal water diversion member 15 and the porous water inlet plate 16 Ente...

Embodiment 3

[0065] This embodiment describes the sewage treatment system of the present invention in detail.

[0066] The sewage treatment system of this embodiment includes the aerobic device for short-distance return of high-concentration sludge according to any of the technical solutions in Embodiment 1. Compared with the sewage treatment system in the prior art, the sewage treatment system of this embodiment has the advantages of low equipment energy consumption, short return flow path, easy blockage of the mud return pipe 6 and good effluent water quality.

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Abstract

The invention discloses an aerobic device for short-distance backflow of high-concentration sludge and a sewage treatment system, relates to the technical field of sewage treatment, and solves the technical problems caused by arrangement of devices such as a submersible sewage pump and a centrifugal pump in a secondary sedimentation tank in the prior art. An aerobic tank of the device is positioned in a shell; the modular sedimentation tank is immersed in the aerobic tank, and a sludge return area is formed between the bottom of the modular sedimentation tank and the bottom of the aerobic tank; a gas pipe in the aerobic tank is communicated with the sludge return pipe and provides gas for the sludge return pipe through the gas pipe; the sludge return pipe is located in the sludge return area, the sludge return pipe is provided with a thick sludge port and a plurality of groups of gas sludge ports, and after the concentrated sludge generated by the modular sedimentation tank is settledto the sludge return area, the concentrated sludge is sucked into the sludge return pipe through the thick sludge port and sprayed into the aerobic tank through the gas sludge ports. The device has the advantages of low equipment energy consumption, short backflow path, difficulty in blockage of the sludge return pipe and good effluent quality.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an aerobic device for returning high-concentration sludge in a short distance and a sewage treatment system including the device. Background technique [0002] The commonly used sewage treatment methods are activated sludge method and biofilm method. [0003] The activated sludge method and its derivative improvement process are the most widely used methods to treat domestic sewage by using microbial flocs, which can effectively degrade and remove organic matter, nutrients such as nitrogen and phosphorus, and solid suspended matter in sewage. The sludge concentration in the activated sludge process is generally 2500-4000mg / L. [0004] When the activated sludge method is used to treat sewage, the sludge concentration in the aerobic tank refers to the content of suspended solids in the mixed liquid at the outlet of the aeration tank, which is represented by the symbol MLS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/10
CPCC02F3/10C02F3/1215C02F2203/006C02F2301/046C02F2303/14Y02W10/10
Inventor 张敬宇唐陆合赵云生王旭王刚
Owner 北京华宇辉煌生态环保科技股份有限公司
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