Equipment and method for treating wastewater difficult to be degraded by biology method of hydrolysis composite membrane

A composite membrane, refractory technology, applied in the field of organic sewage treatment, can solve the problems such as insufficient mixing and contact of wastewater and sludge, inability to guarantee residence time, poor separation of mud and water, etc., to overcome the poor separation of mud and water, improve Biodegradability, the effect of reducing the concentration of organic matter

Inactive Publication Date: 2007-10-10
SOUTHEAST UNIV
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Problems solved by technology

[0003] Technical problem: The purpose of this invention is to provide a device and method for treating refractory wastewater by hydrolysis-composite membrane biological method, which organically combines hydrolysis and composite membrane biological method to overcome the poor biodegradability of refractory wastewater existing in the existing process , can not guarantee the residence time, prone to short flow and channel flow, wastewater and sludge cannot be fully mixed and contacted, mud-water separation effect is not good, etc.

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  • Equipment and method for treating wastewater difficult to be degraded by biology method of hydrolysis composite membrane
  • Equipment and method for treating wastewater difficult to be degraded by biology method of hydrolysis composite membrane
  • Equipment and method for treating wastewater difficult to be degraded by biology method of hydrolysis composite membrane

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Embodiment Construction

[0032] The device for treating refractory wastewater by hydrolysis-composite membrane biological method of the present invention comprises a multi-compartment hydrolysis reactor 1 and a composite membrane bioreactor 2, wherein the outlet end of the multi-compartment hydrolysis reactor 1 connects with the connecting pipe 1-7 The water inlets 2-8 of the composite membrane bioreactor 2 are connected, and the membrane module in the composite membrane bioreactor 2 is connected with a membrane separation outlet pipe B. In the composite membrane bioreactor 2, through the first control valve 3 -1. The first reflux pump 4-1 and the mixed liquid reflux pipe 6 are connected to the water inlet pipe 1-8 of the multi-compartment hydrolysis reactor 1; the compressed air pipe A and the aeration pipe 2 in the lower part of the composite membrane bioreactor 2- 6-phase connection, the outlet of the mud collection area 2-3 at the bottom of the composite membrane bioreactor 2 is connected to the in...

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Abstract

This invention relates to apparatus and method for treating wastewater by hydrolysis-composite membrane biological method. The apparatus comprises: a multi-grid hydrolysis reactor and a composite membrane bioreactor. The method comprises: (1) introducing wastewater into the multi-grid hydrolysis reactor, and hydrolyzing in an anaerobic condition; (2) introducing the hydrolyzed wastewater into the contact oxidation region of the composite membrane reactor, and performing aerobic biological treatment; (3) introducing wastewater into the membrane separation region of the composite membrane bioreactor, and performing further aerobic biological treatment; (4) returning the sludge produced in the multi-grid hydrolysis reactor and the composite membrane bioreactor to the flow-guide region.

Description

technical field [0001] The invention relates to a device and method for treating refractory wastewater by a hydrolysis-composite membrane biological method, and belongs to the technical field of organic sewage (waste) water treatment. Background technique [0002] For the refractory industrial wastewater with a large volume and wide area, it is difficult to meet the discharge standard by using a single aerobic biological method or anaerobic biological method, and the operating cost is too high if the physical and chemical method is used. The method of using anoxic hydrolysis to pretreat refractory wastewater followed by aerobic biological treatment has been gradually recognized. Anoxic hydrolysis pretreatment has short hydraulic retention time, high conversion rate of refractory organic matter, and can greatly improve the biodegradability of wastewater. The organic matter converted by hydrolysis can be efficiently degraded in the subsequent aerobic stage. The joint treatme...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F3/10C02F3/12C02F1/44C02F101/30
CPCY02W10/10
Inventor 王世和吴慧芳
Owner SOUTHEAST UNIV
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