Membrane bioreactor

Abstract

The invention discloses a membrane bioreactor comprising a biological reaction tank, a membrane tank, cleaning liquor, a water producing pump, a water producing port, a backwashing water pump, a chemical feed pump, a chemical box, a blower, a reflux pump and a sludge discharge pump. Wastewater needing treatment is injected into the biological reaction tank firstly and then passes the membrane tank, the cleaning liquor is injected into the membrane tank, the wastewater in the membrane tank is treated via vacuum pumping, the water producing pump and compressed air prior to entering the backwashing water pump, and the water flowing out after backwashing is injected into the chemical box via the chemical feed pump, then enters the membrane tank, passes the reflux pump and the blower and flows back to the biological reaction tank again. The cleaning liquor added into the membrane bioreactor comprises alkalies of sodium hypochlorite 3000 mg/l in concentration and sodium hydroxide water solution 1% in concentration, and acids of oxalic acid 1% in concentration.

Description

technical field [0001] The invention relates to a reactor, in particular to a membrane bioreactor. Background technique [0002] Membrane bioreactors currently on the market mainly use membranes prepared by traditional immersion precipitation and ordinary thermal phase separation. The membrane body is dry and is not suitable for resisting external tensile stress. The cost is high and the cost performance is low. Contents of the invention [0003] The present invention aims at the problems existing in the above-mentioned products, and provides a membrane bioreactor to solve the problems in the above-mentioned products, mainly using the membranes prepared by traditional immersion precipitation and ordinary thermal phase separation. The membrane body is dry and not suitable for resisting external tensile stress. If it is not kept permanently, the water flux is not stable, the operating cost is high, and the cost performance is low. [0004] The present invention adopts the ...

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Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned products, and provides a membrane bioreactor to solve the problems in the above-mentioned products, mainly using the membranes prepared by traditional immersion precipitation and ordinary thermal phase separation. The membrane body is dry and not suitable for resisting external tensile stress. Less than permanent retention, unstable water flux, high operating costs, low cost performance, etc.

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