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Novel anaerobic membrane bioreactor

A technology of anaerobic membrane organisms and anaerobic biofilms, applied in the field of new anaerobic membrane bioreactors, can solve the problems of anaerobic membrane bioreactors, such as reducing the treatment efficiency, reducing floor space, pollution, etc., and prolonging the cleaning cycle and service life, simple operation and control, and low economic investment

Inactive Publication Date: 2010-07-21
HOHAI UNIV
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Problems solved by technology

However, membrane fouling is the biggest problem in the application of anaerobic membrane bioreactors. At the same time, improving the treatment efficiency of anaerobic membrane bioreactors and reducing its footprint is also a key issue.

Method used

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  • Novel anaerobic membrane bioreactor
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Embodiment Construction

[0015] The present invention is further described in conjunction with the accompanying drawings.

[0016] In the new anaerobic membrane bioreactor, the water is fed through the upper water inlet pipe 1, and after the water is evenly distributed by the triangular overflow weir 2, it first flows into the biofilm area 4, which is a circular platform partition installed in the center of the reactor. 7. The space between the outer wall of the cylindrical partition 8 and the inner wall of the reactor, the upper and lower parts can be sealed with iron nets or fences, and filled with film-hanging fillers; water flows into the bottom of the reactor through the biofilm area, and the bottom is equipped with an exposure device. Aeration device 13, under the influence of aeration, water and activated sludge flow upward from the inside of the partition along with the gas. Due to the blocking effect of the circular platform partition, a large amount of activated sludge will stay in this area,...

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Abstract

The invention discloses a novel anaerobic membrane bioreactor, which comprises an anaerobic biomembrane zone, an anaerobic activated sludge zone, a membrane disengagement zone and the like. Water inlet tubes of the novel anaerobic membrane bioreactor are positioned on the upper part of the novel anaerobic membrane bioreactor and uniformly distribute water through a triangular overflow weir. A gas collection chamber is positioned on the top and is connected with two pipelines, wherein one pipeline is used for exhausting and the other one is connected with gas recycle pump. An aerobic gas is recycled to the bottom of the reactor and is aerated through an aerator so that membrane fouling can be effectively reduced. A round table and a cylindrical separation plate are arranged in the middle of the reactor and divide the reactor into the anaerobic biomembrane zone, the anaerobic activated sludge zone and the membrane disengagement zone. A membrane module is arranged on the membrane disengagement zone in a form of immersion and water is pumped out of the membrane module by a pump. The device can be applied to treatment of high-concentration organic waste water in municipal engineering, food industry, industry and the like, and is in particular applied to the places where the land resource is in short supply because of a small occupied area.

Description

technical field [0001] The invention belongs to the intersecting field of sewage biochemical treatment technology and membrane separation technology, and relates to a novel anaerobic membrane bioreactor. Background technique [0002] The traditional biochemical treatment method is divided into aerobic biochemical method and anaerobic biochemical method. Because the anaerobic biochemical method has the characteristics of low investment, high sludge concentration, high sludge load, low energy consumption, low sludge yield, and the generated methane can be used as energy recovery and utilization, it is better than aerobic in the treatment of high-concentration organic wastewater. The biochemical method has great advantages and is economical. However, in practical application, the traditional anaerobic biochemical method suffers from low solid-liquid separation efficiency, and the loss of microorganisms from the bioreactor makes the system treatment efficiency worse, the stabil...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/44C02F3/28
Inventor 李轶胡啸刘建
Owner HOHAI UNIV
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