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Method and device for efficiently and deeply treating sewage by coupled heterogeneous catalysis ozone

A heterogeneous catalysis, advanced treatment technology, applied in chemical instruments and methods, oxidized water/sewage treatment, special compound water treatment, etc. Enhance the pertinence, improve the effect of improvement, and improve the effect of utilization

Active Publication Date: 2017-10-24
国拓化能环境科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional heterogeneous catalytic ozone oxidation process often adopts the form of whole-process catalytic oxidation, and the utilization rate of ozone is not high; while the form of crushing treatment for unreacted ozone tail gas causes waste of resources and increases costs
In addition, the mass transfer form of gas and liquid in the same direction commonly used in the catalytic ozone process reduces the mass transfer efficiency of gas and liquid in the process, resulting in a low ozone utilization rate.
The treatment stage of catalytic ozonation without any pretreatment makes the efficient hydroxyl radicals unable to effectively treat refractory substances, which is also an important reason for the low efficiency of the existing ozone process sewage treatment

Method used

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  • Method and device for efficiently and deeply treating sewage by coupled heterogeneous catalysis ozone
  • Method and device for efficiently and deeply treating sewage by coupled heterogeneous catalysis ozone

Examples

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example 1

[0039] The primary biochemical wastewater from the dye factory first passes the water quality on-line monitoring system 2 to detect and control the water quality, and then enters the reactor through the liquid distribution device 4 in a uniform water distribution manner, and is evenly distributed in the upper packing 5 and contacts with ozone for ozone pretreatment Process: the sewage enters the liquid redistribution device 7 through ozone pretreatment, so that the liquid is evenly distributed again, and then enters the lower catalyst packing 8 through the liquid redistribution device 7, and performs catalytic ozone oxidation treatment, and the sewage passes through the catalytic ozone treatment. The water outlet filter head 10 flows into the static buffer zone for the natural desorption and attenuation of ozone, and finally is discharged through the water outlet valve 12 by the drain pipe.

[0040] Ozone enters the reactor through the gas delivery valve 13 through the pipeline...

example 2

[0042]The primary biochemical wastewater from the dye factory first passes the water quality on-line monitoring system 2 to detect and control the water quality, and then enters the reactor through the liquid distribution device 4 in a uniform water distribution manner, and is evenly distributed in the upper packing 5 and contacts with ozone for ozone pretreatment Process: the sewage enters the liquid redistribution device 7 through ozone pretreatment, so that the liquid is evenly distributed again, and then enters the lower catalyst packing 8 through the liquid redistribution device 7, and performs catalytic ozone oxidation treatment, and the sewage passes through the catalytic ozone treatment. The water outlet filter head 10 flows into the static buffer zone for the natural desorption and attenuation of ozone, and finally is discharged through the water outlet valve 12 by the drain pipe.

[0043] Ozone enters the reactor through the gas delivery valve 13 through the pipeline,...

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Abstract

The invention discloses a method and a device for efficiently and deeply treating sewage by coupled heterogeneous catalysis ozone. According to the method, sewage enters a reactor from the upper portion of the device in a uniform water distribution manner, the sewage sufficiently contacts with lower-layer residual ozone in upper-layer fillers, easily-treated pollutants in the sewage are pretreated and removed, the sewage pretreated by the ozone enters lower-layer catalyst fillers in a uniform water distribution manner and is deeply treated by the aid of the catalysis ozone, the sewage flows into a standing and buffering area, ozone in the sewage is naturally removed and relieved, and the sewage is discharged through a water drainage pipeline. According to the method, water enters from the upper portion, air enters form the lower portion, air-liquid mass transfer efficiency is improved in a reverse flow manner, part of residual ozone is catalyzed, the sewage is pretreated in the upper-layer fillers in a section-dividing coupled manner, the pollutants easily treated by the ozone in the sewage is removed, target of hydroxyl free radical generated by catalysis portions to difficulty degraded pollutants is enhanced, the utilization rate of the ozone is increased, and the treatment efficiency of the catalysis portion and the overall improvement effect of water quality are improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, and in particular discloses a coupling-type heterogeneous catalytic ozone efficient deep treatment method and device for sewage. Background technique [0002] With the increasing development of industry, the output of sewage has increased dramatically year by year. At the same time, the complexity of sewage components makes it difficult for traditional sewage treatment processes to meet people's water quality requirements, and it is difficult to effectively remove some toxic and harmful substances in water bodies. As an effective method for water with complex components, advanced oxidation method has been widely promoted and applied due to its high-efficiency and rapid improvement of water quality. Among them, catalytic ozonation technology not only has the advantages of general advanced oxidation technology, but also has the characteristics of stable effect, no need for secondary treat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F1/20C02F1/725C02F1/78C02F9/00C02F2209/001C02F2209/003C02F2305/023
Inventor 苏本生王俊马欣欣王雯刘广青
Owner 国拓化能环境科技(北京)有限公司