Airlift circulating membrane-bioreactor with independent cleaning of membrane module unit

A bioreactor and bioreaction tank technology, applied in sustainable biological treatment, biological water/sewage treatment, membrane technology, etc., can solve the problems of difficult independent maintenance and online cleaning of membrane units, so as to facilitate manual operation, repair and maintenance Convenience and good cleaning effect

Active Publication Date: 2014-10-29
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide an air-lift circulation membrane-bioreactor whose membrane module unit can be cleaned independently, so as to solve the problem that the membrane units of the known separated air-lift circulation membrane-bioreactor are difficult to be independently maintained and cleaned online

Method used

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  • Airlift circulating membrane-bioreactor with independent cleaning of membrane module unit
  • Airlift circulating membrane-bioreactor with independent cleaning of membrane module unit

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Embodiment Construction

[0028] The membrane module unit provided by the present invention can be cleaned independently and the air-lift circulation membrane-bioreactor is mainly composed of:

[0029] Biological reaction unit, membrane module unit, U-shaped airlift circulation pipe and exchange pipe and the stop valve and valve operation corridor installed on it; the biological reaction unit is composed of a single biological reaction tank, and the membrane module unit is composed of It is composed of at least two independent membrane filter tanks equipped with membrane modules; the biological reaction tank and the membrane filter tank are separated by a partition wall; a U-shaped air-lift circulation pipe equipped with a stop valve is used between each membrane filter tank and the biological reaction tank It communicates with the exchange pipe; the cut-off valve refers to a valve with the function of regulating flow and closing the fluid channel, including cut-off valves, ball valves and butterfly val...

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Abstract

The invention provides an air-lift circulation type membrane-bioreactor with a membrane assembly unit capable of being independently cleaned. The membrane-bioreactor mainly comprises a biological reaction tank, wherein the biological reaction tank is separated from a membrane assembly unit consisting of at least two independent membrane filter tanks by a partition wall; the biological reaction tank and the independent membrane filter tanks in the membrane assembly unit are communicated through a U-shaped air-lift circulation pipe and an exchange pipe respectively; and a water body density difference is generated by utilizing the aeration strength different between the membrane assembly unit and the biological reaction tank so as to form hydraulic circulation required by the membrane assembly unit-biological reaction tank. The membrane assembly unit does not influence the normal operation of other membrane assembly units in a cleaning and maintaining process.

Description

technical field [0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to an air-lift circulation membrane-bioreactor, and more specifically relates to an air-lift circulation membrane-bioreactor in which membrane module units can be cleaned independently. Background technique [0002] Membrane-bioreactor technology is a sewage treatment process that combines membrane separation technology with traditional biological treatment units. This process uses membrane separation to replace the secondary sedimentation tank in the traditional activated sludge process for mud-water separation, which has high solid-liquid separation efficiency and excellent and stable effluent quality; the superior mud-water separation ability of the membrane keeps a high concentration of microbial biomass in the reactor , The volume load in the reactor is high, which greatly saves the floor area; the amount of excess sludge is small; the degree of aut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12B01D65/06
CPCY02W10/10
Inventor 樊耀波赵曙光魏源送
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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