Method for quickly granulating aerobic activated sludge in membrane bioreactor

A membrane bioreactor and sludge granule technology, applied in chemical instruments and methods, biological water/sewage treatment, sustainable biological treatment, etc., can solve the problem of long sludge granulation process and difficulty in maintaining high performance of membrane bioreactor and other problems, to achieve the effect of eliminating membrane fouling, shortening processing time, and broad application prospects
CN102674538BInactive Publication Date: 2014-07-16SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI HUAFON NEW MATERIAL R&D TECH CO LTD
Publication Date
2014-07-16
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a device and a method for quickly granulating aerobic activated sludge in a membrane bioreactor. The device comprises a sequencing batch type tubular reactor SBR (Styrene Butadiene Rubber) and the membrane bioreactor which are mutually communicated. The method comprises the following steps: preliminary training the aerobic activated sludge in the sequencing batch type tubular reactor for 2-15 days, directly and quickly transferring the preliminary-trained aerobic activated sludge into the membrane bioreactor, continuously adding sewage into the membrane bioreactor, and respectively carrying out intermittent operation on membrane filtering and water going-out, aeration and supernatant discharge at the same time; and granulating the aerobic activated sludge inside the membrane bioreactor after the membrane bioreactor runs for 7-14 to prepare the granulated aerobic activated sludge internal circulation type membrane bioreactor. The preparation method disclosed by the invention has the beneficial effects that the quick granulation of the aerobic activated sludge in the membrane bioreactor can be realized, the membrane pollution of the membrane bioreactor is effectively reduced or eliminated, the defect caused by frequently cleaning a membrane component by adopting a physical or chemical method is overcome, and the application prospect is wide.
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Description

technical field

[0001] The invention relates to the field of sewage treatment, in particular to a device and method for rapid granulation of aerobic activated sludge in a membrane bioreactor. Background technique

[0002] Bioreactor is a device that uses biocatalyst to provide a good reaction environment for cell culture, enzyme reaction, and sewage treatment. Bioreactor is the key equipment in the process of biological reaction. Quality and conversion, as well as energy consumption of the bioreactor have a strong influence. Membrane bioreactor is a new sewage treatment technology that combines membrane technology and biochemical reaction technology. It is one of the most promising sewage treatment technologies at present. During the operation, the membrane bioreactor can realize the rapid degradation of organic matter in the sewage by maintaining a high biomass. Compared with the process, the membrane bioreactor has outstanding advantages such as good effluent quality, co...

Claims

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