Activated carbon catalytic ozonation device and sewage treatment process thereof

An ozone oxidation and activated carbon technology, applied in the oxidation of water/sewage treatment and other directions, can solve the problems of reducing ozone utilization efficiency, affecting the ability of activated carbon to catalyze ozone oxidation, low porosity, etc., and achieving prolonged and enhanced contact time and reaction time. ability, the effect of increasing the void ratio

Active Publication Date: 2014-12-10
YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG +2
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Problems solved by technology

However, in this process, due to the low porosity of the activated carbon bed, it is not conducive to the diffusion of ozone molecules to the gas-liquid interface, liquid phase, and activated carbon surface, and it is not conducive to the encounter of ozone molecules and organic mat

Method used

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  • Activated carbon catalytic ozonation device and sewage treatment process thereof
  • Activated carbon catalytic ozonation device and sewage treatment process thereof
  • Activated carbon catalytic ozonation device and sewage treatment process thereof

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Embodiment Construction

[0031] The activated carbon catalytic ozonation device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] Such as figure 1 , 2As shown, an activated carbon catalytic ozone oxidation device includes a reaction tank 1, the upper part of the reaction tank 1 is cylindrical, the lower part is an inverted cone, the upper part is 6.5m high, the diameter is 2.1m, and the lower part is 1.05m high. The interior of the reaction pool 1 is provided with two coaxial and vertical guide cylinders, which are respectively the inner cylinder 2 located inside and the outer cylinder 3 on the periphery. The flow reaction zone 4, the downflow reaction zone 5 and the separation zone 6, wherein the area surrounded by the inner cylinder 2 is the upflow reaction zone 4, the question between the inner cylinder 2 and the outer cylinder 3 is the downflow reaction zone 5, and the outer cylinder 3 and the reaction A separation zone 6 is formed...

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Abstract

The invention discloses an activated carbon catalytic ozonation device and a sewage treatment process thereof. The device comprises a reaction tank, wherein the reaction tank is partitioned into a rising reaction zone, a falling reaction zone and a separation zone from inside to outside in sequence by virtue of guide cylinders; the bottoms of the three zones are communicated and are used as an activated carbon storage zone; the rising reaction zone is internally provided with an ozone and water input device; the tops of the rising reaction zone and the falling reaction zone are communicated; an annular flow director is arranged at the communicating part of the bottoms of the falling reaction zone and the separation zone; at least a part of the bottom of the flow director stretches into the activated carbon storage zone; an inclined guide surface is arranged at the part below the separation zone, of the top of the flow director. By adopting the activated carbon catalytic ozonation device, the activated carbon can be in a circulation fluidized state, the porosity of an activated carbon bed is improved, the effect of catalysis reaction of ozone molecules and organic pollutants on the surface of activated carbon is improved, the capability of activated carbon catalytic ozonation is improved, the utilization rate of ozone is increased, and the antifouling effect is improved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a device for catalyzing ozone oxidation with activated carbon as a catalyst and a sewage treatment process thereof. Background technique [0002] With the rapid development of social economy, more and more "three wastes" of water, air and solid are discharged into the environment during human activities, seriously affecting the harmony and sustainable development between human and natural environment. Among them, the problem of organic pollution in water bodies has become more and more prominent. For example, toxic and harmful synthetic organic substances and trace natural organic substances in drinking water sources have a great relationship with disinfection by-products in tap water. In addition, the secondary effluent from urban sewage treatment plants also contains many kinds of toxic and harmful synthetic organic substances, which mainly belong to endocrine disruptors and per...

Claims

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Application Information

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IPC IPC(8): C02F1/78
Inventor 范举红刘锐陈吕军陈泽枝
Owner YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG
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