Gravity-flow membrane bioreactor with low energy consumption

A membrane bioreactor, energy-consuming self-flow technology, applied in the field of mechanical equipment, can solve the problems of reduced floor space, low oxygen transfer efficiency, etc., and achieve the effects of saving floor space, high oxygen transfer efficiency, and easy maintenance.

Pending Publication Date: 2017-03-22
SHANGHAI KAIXIN ISOLATION TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0009] 5. Conventional pool depth design leads to low oxygen transfer efficiency of the system; although the floor area is greatly reduced compared with traditional technology, it still cannot change the increasingly scarce demand of existing land

Method used

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  • Gravity-flow membrane bioreactor with low energy consumption

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Embodiment Construction

[0050] see figure 1 , the low-energy self-flowing membrane bioreactor of the present invention includes a reactor tank 1, a guide cylinder 2, an aerator 3, an MBR membrane module 4, an inlet water distribution system 5, an MBR fan 6, a process fan 7, Vacuum suction system 8, constant flow automatic adjustment system 9 and sludge internal circulation system 10; the diversion cylinder is set in the lower part of the reactor tank, the aerator is set in the middle of the diversion cylinder, and the MBR membrane module is set in the reactor tank. In the upper part of the tank body, the water inlet and distribution system sends the pretreated sewage evenly from the lower part of the guide tube to the guide tube through the inlet pump and water distributor, and the MBR fan sends air from the bottom of the MBR membrane module through the air distribution pipe. The air is evenly sent into the MBR membrane module, the process fan sends air into the aerator through the air supply pipe, t...

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Abstract

The invention provides a gravity-flow membrane bioreactor with low energy consumption. The gravity-flow membrane bioreactor comprises a reactor tank, a guide cylinder, an aerator, a MBR membrane assembly, an inflow water distribution system, a MBR fan, a process fan, a vacuum suction system, a constant-flow automatic regulation system and an internal sludge circulation system. According to the invention, a MBR membrane is arranged on the top of the bioreactor and siphon is realized through full use of liquid level difference, so power-free water production is realized; since the MBR membrane assembly is located on the upper part of a biochemical aeration system, air for biochemical aeration can be fully used again for scrubbing of the membrane, so considerable air needed in scrubbing of the membrane is saved; and an anoxic area is formed in the bottom of a reaction zone, so a high-efficiency A / O denitrification function is obtained. The gravity-flow membrane bioreactor provided by the invention is a high-efficiency biochemical system realizes organic combination of power-free water production, reduction in air demand, high oxygen transfer efficiency, integrated anoxic / aerobic treatment, sludge backflow without extra power, production of high-quality water and the like.

Description

technical field [0001] The invention relates to a mechanical device, in particular to a low-energy self-flowing membrane bioreactor. Background technique [0002] According to the actual water quality requirements, the current conventional wastewater treatment process is mostly the biological treatment process of A / O-secondary settling tank or the improvement or deformation process of traditional A / O-secondary settling tank, which is also one of the most mature water treatment processes at present. . However, the A / O-Secondary Settling Tank process can no longer meet the high emission standards and reuse requirements in today's increasingly demanding discharge and reuse requirements. In this context, the MBR membrane process has also been widely used. The MBR membrane module is used to replace the traditional secondary sedimentation tank. The membrane module is placed at the end of the aerobic tank or in a separate membrane tank, and the produced water is pumped by the suct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/30C02F101/16
CPCC02F3/1268C02F3/301C02F2101/16C02F2203/006Y02W10/10
Inventor 王益民邵蔚葛文越
Owner SHANGHAI KAIXIN ISOLATION TECH CO LTD
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