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Photocatalytic internal recycle integrated MBR (Membrane Biological Reactor) reactor

A photocatalytic reactor, photocatalytic technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. Convenience and the effect of improving degradation efficiency

Inactive Publication Date: 2013-11-06
NANCHANG UNIV
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Problems solved by technology

[0005] However, for some special wastewater, such as wastewater with high salt content, refractory biodegradable organic substances, and high COD concentration, the use of separate biochemical and advanced oxidation has its limitations.
Traditional biochemical treatment is difficult to effectively remove refractory organic matter, and advanced oxidation technology alone may have disadvantages such as high capital investment and operating costs

Method used

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  • Photocatalytic internal recycle integrated MBR (Membrane Biological Reactor) reactor

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Embodiment Construction

[0026] The structure of the present invention includes an ultraviolet lamp, a circulation pipe, a photocatalytic circulation pump, an overflow pipe, a water inlet pipe, a water inlet pump, a fan, a water production pipe, a water production pump, a hydrogen peroxide dosing and metering device, a photocatalytic reactor, a biochemical reactor, Photocatalytic cycle membrane module, water production membrane module.

[0027] The specific implementation process is: the sewage enters the biochemical reactor (12) through the water inlet pump (6) for biochemical degradation, the fan (7) supplies oxygen and makes the activated sludge fully contact with the wastewater, and the air bubbles generated by the aeration head The photocatalytic circulation membrane module (13) and the water production membrane module (14) are scoured to slow down membrane fouling; the photocatalysis circulation membrane module (13) is used as an internal circulation water production membrane module, which produc...

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Abstract

The invention relates to an integrated MBR (Membrane Biological Reactor) reactor coupled with a photocatalytic internal recycle. The reactor mainly comprises a photocatalytic device and a membrane separating device. The photocatalytic device carries out photo-catalytic oxidation with the adoption of an ultraviolet lamp matched with hydrogen peroxide. The membrane separating device is divided into two groups. One of the groups is used as a water producing membrane assembly for separating cement in a normal MBR process, while the other group is used as a membrane assembly for water inlet of the photocatalytic internal recycle. The two membrane separating assemblies are independently controlled by different water producing pumps. The water producing amount and photocatalytic recycle processing amount can be regulated according to water inlet condition and device processing efficiency. The integrated device is suitable for processing degradation-resistant industrial wastewater. Wastewater is purified through coordinating effect of photocatalysis and biodegradation in the reactor. The process is convenient to operate and manage, strong in regulation, shock load resistance, and low in operating cost.

Description

[0001] manual technical field [0002] The invention relates to a method for treating refractory sewage by combining advanced oxidation technology and membrane bioreactor technology (MBR), belonging to the technical field of environmental protection. Background technique [0003] Membrane bioreactor is a biochemical reaction system that integrates high-efficiency membrane separation technology and biodegradation of bioreactors. It uses traditional membrane modules instead of secondary sedimentation tanks for traditional biochemical treatment for mud-water separation, which has high solid-liquid separation efficiency. , high biomass, good water quality and high treatment efficiency. The traditional MBR process has been widely used in the field of wastewater treatment, but due to the limited biodegradability of microorganisms, the removal efficiency of many long-chain, cyclic, and even toxic organic substances is low, or even cannot be degraded. For such refractory organic c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/72
Inventor 周文斌冯斐齐美富胡兆吉章茹陈川
Owner NANCHANG UNIV
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