Contact oxidizing H circulation pipe film biological reactor

Abstract

The membrane bioreactor consists of mainly biologically contacting oxidation pond, aeration pipe, H-shaped or h-shaped circulating pipe, partition board, membrane tank, membrane assembly, suction pump, flowmeter, etc. It features the biological treating unit of biologically contacting oxidation reactor with high volume load, low sludge output, no sludge problem, simple management and other advantages; the membrane separating unit separated from the biotreating unit with partition board; and the circulation of the mixed liquid within the biologically contacting oxidation pond and the membrane tank under the synergistic action of the partition board and the circulating pipe resulting in low cost and easy operation. The present invention is used in treating domestic sewage, and has high out water quality, long membrane life, low power consumption and other advantages.

Description

technical field [0001] The invention belongs to the technical field of split-type membrane bioreactors, in particular to a contact oxidation H circulation tube membrane bioreactor. Background technique [0002] The split membrane bioreactor is to separate the membrane module from the bioreaction unit. The biological reaction unit is mostly a fully mixed activated sludge biological contact oxidation reaction tank, that is, the split membrane bioreactor is equipped with a membrane unit outside the biological contact oxidation reaction tank. The traditional split membrane bioreactor uses pipes and pumps to connect the biological contact oxidation reaction tank with the membrane unit. The membrane unit adopts the operation mode of cross-flow filtration, the membrane module adopts flat plate, tubular or hollow fiber ultrafiltration membrane, and more microfiltration membrane is used in the later development. Due to the separation of the membrane unit and the biological reaction...

AI Technical Summary

Problems solved by technology

However, a higher sludge concentration will have a negative impact on the membrane flux, resulting in a reduction in the ability of the membrane bioreactor to treat wastewater

At the same time, a higher sludge concentration is likely to cause membrane fouling. In order to reduce membrane fouling, a higher aeration volume is required, so the aeration power consumption per unit of water treatment increases.

In addition, the activated sludge method is prone to sludge swelling, which reduces the quality of the treated effluent, increases the viscosity of the mud-water mixture, and causes membrane clogging.

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