Photocatalytic-oxidation wastewater treating device

Abstract

The invention discloses a photocatalytic-oxidation wastewater treating device. The photocatalytic-oxidation wastewater treating device comprises a sedimentation tank, a water collecting tank and a shallow fluidization tank arranged between the sedimentation tank and the water collecting tank. Wastewater can flow into the shallow fluidization tank and the water collecting tank sequentially from the sedimentation tank. A plurality of first UVA lamps are mounted on the periphery of an opening of the sedimentation tank and the periphery of an opening of the water collecting tank. The inner wall of the sedimentation tank and the inner wall of the water collecting tank are each coated with a nano photocatalytic material. The bottom of the shallow fluidization tank is formed by sequentially connecting a plurality of arc light reflection plates which are made of a nano photocatalytic material, and openings of the arc light reflection plates face upwards; a composite grating type screen coated with a nano catalytic material is arranged between every two adjacent light reflection plates; and the composite grating type screens and the corresponding light reflection plates define small reaction tanks. A second UVA lamp and an aeration head are mounted in each small reaction tank and arranged in a staggered mode. The aeration heads are externally connected with an aeration pipe. The photocatalytic-oxidation wastewater treating device is simple in structure, small in investment, and capable of purifying the wastewater, lowering COD, removing odour and peculiar smell and performing disinfection and sterilization treatment.

Description

technical field [0001] The invention relates to a multi-stage treatment technology for water, waste water or sewage, in particular to a device for photocatalytic oxidation treatment of waste water. Background technique [0002] At present, flocculant precipitation method, activated carbon adsorption method and filtration method are usually used for industrial wastewater treatment. The materials used in these treatment methods need to be continuously put in, the cost is high, and many large-scale equipment are often used, the operating cost is high, and the economic burden is heavy. At the same time , the above-mentioned treatment method can only achieve the decontamination effect, and cannot carry out deep purification treatment such as sterilization and disinfection on the wastewater. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a device for photocatalytic oxidation treatment of wastewater with simple structu...

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Problems solved by technology

[0002] At present, flocculant precipitation method, activated carbon adsorption method and filtration method are usually used in the treatment of industrial wastewater. The materials used in these treatment methods need to be continuously put in, the cost is high, and many large-scale equipment are often used, the operating cost is high, and the economic burden is heavy. At the same time , the above treatment method can only achieve decontamination effect, and cannot carry out deep purification treatment such as sterilization and disinfection of wastewater

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