Equipment for treating with water by using suspension photocatalysis and oxidation

Abstract

A suspended photocatalytic oxidation water treatment device belongs to the technical field of domestic and industrial water treatment. It mainly includes a reactor, an air supply device, a water inlet system and a water outlet system; a partition is arranged in the reactor to divide the reactor into two parts, the lamp area and the membrane area; A microporous aeration chamber, and an auxiliary porous air distribution pipe is set under the membrane module. Through the full bottom aeration of the microporous plate and the intermittent aeration of the auxiliary porous air distribution pipe, the sinking of the powder catalyst is prevented, and at the same time, it is beneficial to the efficient decomposition of organic matter, prevents membrane clogging, and effectively prolongs the treatment cycle. The present invention is also provided with a ventilation device in the lamp area, which solves the problems such as fouling on the surface of the lamp tube caused by the temperature rise of the lamp tube. It has the characteristics of high reaction rate and long-term continuous operation, and its operability and safety have also been further improved. It is not only suitable for the degradation of organic wastewater, but also for the sterilization and sterilization of bacteria contained in organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of domestic and industrial water treatment, and in particular relates to the structural design of a photocatalytic oxidation water treatment device. Background technique [0002] Photocatalytic oxidation water treatment method is a newly emerging water treatment technology. It has the advantages of thorough oxidation of organic matter, the ability to oxidize most organic matter, and mild reaction conditions. It has a very broad prospect in the environmental field. Chinese patent application "Suspension Photocatalytic Oxidation Water Treatment Method and Device Combined with Membrane Separation Equipment" (publication number: CN1262229A) discloses a suspension photocatalytic oxidation water treatment method and device. The powdered photocatalyst particles are mixed with the water to be treated to form a mixed solution of suspended catalyst; the mixed solution is sent to the reactor, and the mixed solution is ...

AI Technical Summary

Problems solved by technology

[0003] ①Although the diversion area and forced circulation are set in the reactor, the catalyst cannot be fully stirred evenly. 50% decrease in the concentration of internal catalyst), seriously affecting the treatment efficiency of the reactor

[0004] ②Although the membrane can effectively separate the catalyst and the treated water, the accumulation of the catalyst on the surface of the membrane leads to serious membrane fouling during continuous operation, and the membrane resistance rises rapidly (the increase rate of the membrane filtration resistance is 5×10 5 m -1 the s -1 ), in order to reduce membrane resistance, regular cleaning is required, which shortens the cycle of membrane cleaning, which is not conducive to continuous operation

[0005] ③ During continuous operation, due to the irradiation of the lamp, the temperature of the lamp tube increases, and the surface of the lamp tube becomes fouled, which seriously affects the light transmission effect (after a week of operation, the light intensity of the casing wall drops by 90%), greatly reducing the photocatalytic reaction rate , thus affecting the processing efficiency of the reactor

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