Porous packing coated membrane bioreactor (MBR) device and sewage treatment method

A porous filler and coated technology, which is applied in the field of porous filler coated MBR devices, can solve the problems of easy pollution of MBR biofilm reactors and high cost of replacing membrane components, so as to alleviate the problem of membrane fouling, save infrastructure costs, reduce Effect of backwash frequency

Active Publication Date: 2018-05-04
SHANDONG JIANZHU UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] Aiming at the defects of the prior art, the present invention provides a porous filler-coated MBR device and a sewage treatment method to solve the problems of easy pollution of existing MBR biofilm reactors and high cost of replacing membrane components

Method used

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  • Porous packing coated membrane bioreactor (MBR) device and sewage treatment method

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Embodiment 2

[0031] This embodiment discloses a method for sewage treatment using the porous filler-coated MBR device described in Example 1, which includes the following steps:

[0032] 1. Operation stage:

[0033] The inlet water (slightly polluted water) enters the reaction tank 15 through the inlet pipe 6 under the suction action of the inlet pump 1. Under the normal working conditions of the air compressor 4, the aeration system 7 and the aeration head 7-1, the slightly polluted water The pollutants in the water are degraded and metabolized by the activated sludge 22 and the biofilm 14 on the porous polyurethane sponge filler 13, and the water quality is purified. The MLSS of the activated sludge in the reaction tank 15 is 200mg / L, the dissolved oxygen concentration is 5mg / L~6mg / L, and the hydraulic retention time is 12~24h. The purified slightly polluted water passes through the internal holes on the porous polyurethane sponge filler 13 , and is pumped through the ceramic membrane 1...

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Abstract

The invention discloses a porous packing coated membrane bioreactor (MBR) device and a sewage treatment method. According to the porous packing coated MBR device, porous sponge packing sleeves the exterior of a ceramic membrane module and can rotate around the ceramic membrane module, and the ceramic membrane module is cleaned by means of physical friction of the porous polyurethane sponge packing, so that the membrane fouling problem of an MBR is alleviated, the backwashing frequency is reduced, an MBR system can still operate normally in a surface friction cleaning process, and the effluenteffect is not influenced. The porous polyurethane sponge packing enriches a biofilm and almost produces no residual sludge; the packing can be replaced and can also be reused after being washed with an alkaline solution. An MBR biochemical reaction pool is combined with a moving bed reactor, so that the biomass is increased, and the quality of effluent is ensured.

Description

technical field [0001] The invention relates to a porous filler-coated MBR device and a sewage treatment method, which are used for sewage treatment. Background technique [0002] As a new sewage treatment process that organically combines membrane separation and biotechnology, membrane bioreactor (MBR) has significant advantages such as excellent and stable effluent quality, small footprint, and convenient operation and management. The reuse of reclaimed water has strong competitiveness and is highly valued in the world. It is regarded as "best available technology" and has a very broad application prospect. [0003] However, membrane fouling has always plagued MBR operations. For sewage with high organic content such as domestic sewage, the surface of the membrane module in the MBR is prone to biological fouling and even a gel layer. If the sludge load of the MBR membrane is too high, not only the removal rate of pollutants cannot be guaranteed, but on the contrary, it w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/12C02F2203/006Y02W10/10
Inventor 尹明山张桂芹甄颖超赵苗苗王学琳康霄刘欢
Owner SHANDONG JIANZHU UNIV
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