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Low energy consumption anaerobic-oxic coupled membrane bioreactor and sewage treatment method

A bioreactor, coupled membrane technology, used in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. The problems of high flow rate and poor denitrification effect can achieve the effect of good denitrification effect and significant energy saving effect.

Pending Publication Date: 2017-06-13
GELANTE ENVIRONMENTAL PROTECTION ENG BEIJING CO LTD
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Problems solved by technology

However, in the actual application of this technical solution, due to the high flow rate of the airlift circulation flow, the dissolved oxygen concentration in the membrane pool and the reaction channel is too high, it is difficult to form an anoxic environment, and the denitrification effect is poor.
[0005] The purpose of the invention is to solve the technical problem that the denitrification effect of the low energy consumption membrane bioreactor is poor

Method used

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  • Low energy consumption anaerobic-oxic coupled membrane bioreactor and sewage treatment method
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  • Low energy consumption anaerobic-oxic coupled membrane bioreactor and sewage treatment method

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Embodiment Construction

[0035] see Figure 1 to Figure 7 , the first to the fourth low energy consumption coupled membrane bioreactors are characterized in that they include a reaction tank (1), at least one vertical membrane tank partition (2) is arranged in the reaction tank (1), and the membrane tank Partition (2) separates the reaction zone (4) and the membrane tank (6) into which the reaction tank (1) is divided, and at least one horizontal air lift partition (5) is established in the membrane tank (6). The partition (5) divides the membrane pool (6) into equal at least one membrane pool A (6A) and at least one membrane pool B (6B), and the top of the air stripping partition (5) separates the membrane pool A (6A) and the membrane pool Pool B (6B) is connected, and at least one membrane module (100) is provided in the middle of membrane pool A (6A) and membrane pool B (6B); at least one membrane pool channel is provided at the bottom of the membrane pool partition (2) A (7A), which communicates ...

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Abstract

The invention relates to a low energy consumption anaerobic-oxic coupled membrane bioreactor (LE-AOCMBR) and a sewage treatment method, and relates to the technical field of sewage treatment. The LE-AOCMBR comprises at least one membrane pool A, at least one membrane pool B, at least one aerobic area and at least one anoxic area; the bottoms of the membrane pool A and the membrane pool B communicate with the two ends of the aerobic area correspondingly; an aerobic pool communicate with an anoxic pool through an anoxic channel; and produced water is produced by an MBR (membrane bioreactor) positioned in the membrane pool A and the membrane pool B. Repeated circular flowing of water in the membrane pools, the aerobic area and the anoxic area is realized by switching aeration on the membrane pool A or the membrane pool B and through gas stripping circular flow, dissolved oxygen is provided for aerobic reaction of the aerobic area, and large-flow denitrification liquid is provided for the anoxic area. Double-direction flushing of the membrane is realized by switching aeration on the membrane pool A or the membrane pool B. Anoxic, aerobic and membrane separation are organic combined through membrane aeration gas stripping action, energy consumption is one third of the traditional MBR energy consumption, energy-saving effect is remarkable, and a denitrification effect is obvious.

Description

technical field [0001] The invention relates to the technical fields of membrane filtration and sewage treatment, in particular to a low-energy membrane bioreactor and a sewage treatment method that couple anoxic, aerobic and membrane filtration. [0002] technical background [0003] Combining membrane filtration with activated sludge wastewater treatment has resulted in membrane bioreactor (MBR) technology. Compared with the traditional activated sludge method, the MBR sewage treatment technology has higher tank volume efficiency and more guaranteed water quality. However, there are many technical problems in MBR at present, among which the problem of energy consumption is more prominent. The MBR system with nitrification-denitrification function in the known technology includes anoxic tank, aerobic tank and membrane tank in sequence, and the main energy consumption comes from: 1. Membrane gas flushing and aeration; 2. Biochemical aeration; 3. Used for membrane 4. Other e...

Claims

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Application Information

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IPC IPC(8): C02F3/30
CPCC02F3/301
Inventor 孟广祯孙海杰
Owner GELANTE ENVIRONMENTAL PROTECTION ENG BEIJING CO LTD
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