External-mounting photocatalytic - biological fluidized bed reactor
A biological fluidized bed, photocatalytic reaction technology, applied in the field of wastewater treatment devices, can solve the problems of easy saturation of adsorption carriers, low removal rate, easy blockage of membrane pores, etc. The effect of small mud production
Active Publication Date: 2013-10-30
HOHAI UNIV
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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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[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0022] Such as Figure 1 to Figure 3 Shown, a kind of hanging type photocatalysis-biological fluidized bed reactor comprises biological fluidized bed, is respectively provided with photocatalytic reaction device on both sides of biological fluidized bed, and biological fluidized bed is main reactor, and it comprises bed In the bed body, a downflow area 1, an upflow area 2, a three-phase separator 4, a diversion cylinder 7, and a triangular overflow weir 8 are arranged. The three-phase separator 4 is arranged above the diversion cylinder 7, and the triangular overflow Flow weir 8 is located at the top of bed body; Wherein downflow zone 1 and upflow zone 2 form main reaction zone; Both the water inlet pipe 9 and the air inlet pipe 10 communicate with the upflow area 2, and an aeration head 12 is arranged at the bottom of the upflow area 2, and an outlet pipe 1...
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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...
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IPC IPC(8): C02F9/14C02F3/08C02F1/32C02F103/30
CPCY02W10/10
Inventor 祝建中陈龙冷阳
Owner HOHAI UNIV
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