Integrated gas internal circulating anaerobic baffle membrane bioreactor

A membrane bioreactor, anaerobic baffle technology, applied in anaerobic digestion treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the problems of difficult management, long process flow, difficult treatment, etc. To achieve the effect of reducing the degree of membrane fouling, improving economy and reducing pollution

CN106630138APending Publication Date: 2017-05-10CHINA AGRI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-05-10

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Abstract

The invention discloses an integrated gas internal circulating anaerobic baffle membrane bioreactor which comprises an anaerobic baffle reaction region and an anaerobic membrane bioreaction region, wherein a water inlet and a sludge discharge opening I are formed in the sidewall of the anaerobic baffle reaction region, and a gas collection opening I is formed in the top of the anaerobic baffle reaction region; the anaerobic baffle reaction region comprises a plurality of compartments, a baffle is arranged in each compartment, and each compartment is divided into a falling region and a rising region by the corresponding baffle in the flowing direction of sewage to be treated; a sludge discharge opening II is formed in the sidewall of the anaerobic membrane bioreaction region, and a gas collection opening II is formed in the top of the anaerobic membrane bioreaction region; a plurality of anaerobic membranes are arranged in the anaerobic membrane bioreaction region, and a membrane water outlet is formed in the upper part of each anaerobic membrane, and is communicated with a water outlet pipe; both the gas collection openings I and II are communicated with a gas collection bag. After the sewage is biodegraded by an anaerobic fixed bed, suspending solids entering a membrane separation region are greatly reduced, the membrane pollution degree is greatly reduced, long-term running and maintenance of the membranes are facilitated, and the economy is improved.
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Description

technical field

[0001] The invention relates to an integrated gas internal circulation anaerobic baffle membrane bioreactor, which belongs to the field of waste water anaerobic fermentation. Background technique

[0002] With the deterioration of my country's water environment, higher requirements are put forward for the treatment of various wastewater. High-concentration organic wastewater has a large degree of pollution to the environmental water body, and the treatment is difficult, which is one of the problems in the field of environmental protection research. At present, the main anaerobic treatment technology may not be able to effectively treat wastewater containing high suspended solids or the power of stirring and mixing is large, the concentration of suspended solids in the effluent is high, subsequent treatment is difficult, and often requires the combination of multiple units, the process is long, and management is difficult. Large, short-process needs are urgen...

Examples

Embodiment 1

[0036] The integrated gas internal circulation anaerobic baffle membrane bioreactor is a cuboid, and the length ratio of the anaerobic baffle reaction zone to the anaerobic membrane bioreactor is 1:3.

[0037] The anaerobic sludge is inoculated according to the different sludge concentrations in the anaerobic baffle reaction zone 1 and the anaerobic membrane biological reaction zone 17 . Pump the pig farm waste water (COD=10000-15000mg / L, SS=1000-2000mg / L) from the water inlet 5, pump it to the first compartment of the anaerobic baffle reaction zone 1, and then pass through the second compartment (each compartment passes through the downflow zone and upflow zone in turn), the removal rates of COD and SS are 90-93% and 75-80% respectively, that is, after COD and SS pass through the anaerobic baffle reaction zone, they enter the anaerobic The concentration of membrane bioreaction zone 17 is respectively 700-1500mg / L and 200-500mg / L; Pig farm waste water will pass through grid 7 ...

Embodiment 2

[0040]The integrated gas internal circulation anaerobic baffle membrane bioreactor is a cuboid, and the length ratio of the anaerobic baffle reaction zone to the anaerobic membrane bioreactor is 1:3.

[0041] The anaerobic sludge is inoculated according to the different sludge concentrations in the anaerobic baffle reaction zone 1 and the anaerobic membrane biological reaction zone 17 . Pump cattle farm wastewater (COD=20000-22000mg / L, SS=25000-28000mg / L) from water inlet 5, pump to the first compartment of anaerobic baffle reaction zone 1, and then pass through the second compartment (each compartment passes through the downflow zone and upflow zone in turn), the removal rates of COD and SS are 85-90% and 80-85% respectively, that is, after COD and SS pass through the anaerobic baffle reaction zone, they enter the anaerobic The concentration of membrane bioreaction zone 17 is 2000-3300mg / L and 3750-5600mg / L respectively; Cattle farm waste water will pass through grid 7 when e...