Biological membrane-photocatalytic integration reaction device for micro pollution raw water pretreatment

Abstract

The invention relates to a biological membrane-photocatalytic integration reaction device for micro pollution raw water pretreatment, which comprises a device body, a water inlet pipeline and a water outlet pipeline, wherein the water inlet pipeline and the water outlet pipeline are communicated with the device body, the device body is separated into a biological membrane biochemical reaction region positioned at the lower part and a photocatalytic reaction region positioned at the upper part through a transverse perforated separation plate, biological filling materials are filled in the biological membrane biochemical reaction region, photocatalytic suspension filling materials are filled in the photocatalytic reaction region, the bottom of the biological membrane biochemical reaction region is provided with the water inlet pipeline, the water inlet pipeline is communicated with raw water through a water pump, and the top of the photocatalytic reaction region is provided with the water outlet pipeline. The biological membrane biochemical reaction and the photocatalytic reaction are integrated into one reaction device, the transverse separation is realized through a middle perforated plate, the flow direction conversion of the water flow is realized through a middle vertical water pass passage, the total degradation efficiency of the reaction device on organic matters can be improved after the two-stage treatment of biological-photocatalytic treatment, simultaneously, the treatment process flow is shortened, and the occupied area is saved.

Description

technical field [0001] The invention relates to a pretreatment device for slightly polluted raw water, which belongs to the technical field of environmental protection, in particular to a biofilm-photocatalytic integrated reaction device for pretreatment of slightly polluted raw water. Background technique [0002] Slightly polluted raw water refers to drinking water sources that are mainly polluted by organic matter, and some items exceed the standards stipulated in the "Environmental Quality Standards for Surface Water" (GB3838-2002) for Class III water bodies. The pollutants contained in this type of water are more diverse and complex in nature, but the concentration is relatively low. [0003] Experimental research and actual production results at home and abroad have shown that conventional water purification processes are poor in removing organic matter, especially dissolved organic matter in slightly polluted raw water. requirements are more difficult. In addition, ...

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Problems solved by technology

However, the above-mentioned photocatalytic-biological oxidation tandem combination process has disadvantages such as long process flow, large floor area, and low catalytic efficiency.

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