External-mounting photocatalytic - biological fluidized bed reactor

Abstract

The invention discloses an external-mounting photocatalytic - biological fluidized bed reactor, which comprises a biological fluidized bed and a photocatalytic reaction device, wherein the photocatalytic reaction device comprises a shell body and an ultraviolet lamp; a photocatalytic reaction area is formed between the shell body and the biological fluidized bed; a valve is arranged between the top of the photocatalytic reaction area and the biological fluidized bed, and the bottom of the photocatalytic reaction area is communicated with the biological fluidized bed; and the ultraviolet lamp is arranged in the photocatalytic reaction area. The biodegradability of wastewater is increased by mainly utilizing photocatalytic reaction, and meanwhile, the refractory printing and dyeing wastewater is treated by utilizing a biological membrane method of the biological fluidized bed. According to the external-mounting photocatalytic - biological fluidized bed reactor, the defects that the traditional printing and dyeing wastewater is difficult to biodegrade and the physical-chemical treatment cost is high are overcome. The external-mounting photocatalytic - biological fluidized bed reactor has a good treatment effect to the refractory industrial wastewater and has a stable quality of effluent water. According to the reuse requirements of different reused water, the load modification of a carrier material can be adjusted to achieve the optimization to the working condition of a reactor. In the whole wastewater treatment process, no secondary pollution exists, and cleaning production is carried out.

Description

technical field [0001] The invention relates to a waste water treatment device, in particular to an external photocatalysis-biological fluidized bed reactor. Background technique [0002] Printing and dyeing wastewater is the most polluting wastewater produced by the textile industry. Its discharge accounts for more than 10% of the total industrial wastewater discharge. It is one of the most important sources of water pollution. The comprehensive treatment of printing and dyeing wastewater is an urgent problem to be solved. [0003] According to different pollutants, printing and dyeing wastewater treatment methods can be roughly divided into three categories: biological method, chemical method and physical chemical method. Due to the complex composition of wastewater, a single treatment method often cannot achieve the ideal treatment effect, so a combination of several methods is used to complete the thorough treatment of printing and dyeing wastewater. [0004] The tradit...

AI Technical Summary

Problems solved by technology

The traditional treatment methods have their disadvantages, such as the anaerobic biological treatment method has a long hydraulic retention time and the removal rate is not high; the advanced oxidation method consumes a lot of chemicals and the treatment cost is high; the photocatalytic method is not completely treated and the adsorption carrier is easy to absorb during the reaction process Saturation, short operation period; Membrane separation technology, the performance of various membranes is still unstable, the membrane pores are easy to block, the cost of the membrane system is high, and the service life is short

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