Fluidzed equipment for treating with water by using photocatalysis and oxidation

A water treatment device, photocatalytic oxidation technology, applied in the direction of oxidation water/sewage treatment, light water/sewage treatment, permeation/dialysis water/sewage treatment, etc., can solve the problem of reducing the photocatalytic reaction rate, affecting the reactor treatment efficiency, Membrane resistance rises quickly and other problems, to achieve the effect of improving aeration uniformity, facilitating efficient decomposition, and strengthening jitter

Inactive Publication Date: 2003-05-07
TSINGHUA UNIV
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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 will cause serious membrane fouling during continuous operation, and the membrane resistance will increase rapidly (the increase rate of the membrane filtration resistance is 5×105m-

Method used

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  • Fluidzed equipment for treating with water by using photocatalysis and oxidation
  • Fluidzed equipment for treating with water by using photocatalysis and oxidation
  • Fluidzed equipment for treating with water by using photocatalysis and oxidation

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Embodiment

[0025] The invention is based on the treatment of slightly polluted water containing an initial concentration of 0.27mmol / L p-chlorophenyl potassium acid, and the photocatalyst uses TiO with a particle size of 1-10 μm 2 . The light source is an ultraviolet lamp with a wavelength of 254nm, and the auxiliary porous gas distribution pipe is a polyvinyl chloride (PVC) pipe with a diameter of 15mm. The pore diameter of the stainless steel microporous plate is 5 microns (finished products can be purchased).

[0026] Reactor body size: 0.555×0.45×1.5m 3 . More than 40 days of continuous operation: the main data and effects of the present invention are as follows:

[0027] ① The uniformity of aeration in the reactor is improved, and the catalyst sedimentation is changed from 0.03g / l d to 0.0025g / ld. According to the continuous operation, the concentration of the catalyst can be reduced by more than 25%, which can obviously affect the treatment effect, and the reactor can be improve...

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Abstract

A suspension-type photocatalytic oxidizing equipment for treating water is composed of reactor divided into lamp region and membrane region by partition, air supply unit, water feeding system and water discharge system. A minipore aerating chamber is respectively arranged at bottoms of said lamp and membrane regions for preventing deposition of catalyst. Its advantages are high efficiency to decompose organic substances, no blocking to membrane, high reactino speed, and long service period.

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 ...

Claims

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Application Information

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IPC IPC(8): C02F1/32C02F1/44C02F1/72
Inventor 黄霞施汉昌孟耀斌梁鹏
Owner TSINGHUA UNIV
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