Catalytic ozonation system and method and application

A technology of ozone catalytic oxidation and ozone oxidation, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of toxic intermediate products, excessive intermediate products, bromate by-products, etc., and achieve Improve gas solubility, increase gas-liquid mixing ratio, and improve efficiency

Active Publication Date: 2019-04-12
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional ozone oxidation method also has some shortcomings in the application: selective oxidation, many intermediate products and may produce more toxic intermediate products, insufficient mineralization efficiency, low ozone utilization efficiency, and bromate by-products, etc. Wait
This method can effectively deal with polluted gases, but cannot deal with polluted liquids especially polluted water

Method used

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  • Catalytic ozonation system and method and application
  • Catalytic ozonation system and method and application
  • Catalytic ozonation system and method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example 1 see figure 1 , the liquid oxygen 12 in the liquid oxygen storage tank 1 is gasified into pure oxygen 3 by the low energy consumption refrigeration device 2 as the gas source of the ozone generator 3; After the low-energy refrigeration device 2 cools down, it reaches 0-10°C; part of the waste water treated by the catalytic ozonation reaction tank 6 is returned to the low-energy refrigeration device 2 for cooling through the upper outlet of the tank, and the temperature of the waste water is about 5-40°C. The cooling device 2 reaches 0-5°C after cooling; the cooled ozone-containing gas 10 and return water 11 are pressurized by the gas booster pump 9 and the liquid booster pump 8 respectively, and then enter the bubble-free high-concentration ozone water preparation device 5, Uniformly mix in the bubble-free high-concentration ozone water preparation device 5 to form high-concentration ozone water 15; high-concentration ozone water 15 enters the catalytic ozonati...

Embodiment 2

[0085] Example 2 see figure 2 , the liquid oxygen 12 in the liquid oxygen storage tank 1 is gasified into pure oxygen 3 by the low-energy refrigeration device 2 as the gas source of the ozone generator 3; After the low-energy refrigeration device 2 cools down, it reaches 0-8°C; part of the wastewater treated by the catalytic ozonation reaction tank 6 is returned to the low-energy refrigeration device 2 through the upper outlet of the tank for cooling, and the temperature of the waste water is about 5-35°C. The cooling device 2 reaches 0-5°C after cooling; the cooled ozone-containing gas 10 and return water 11 are pressurized by the gas booster pump 9 and the liquid booster pump 8 respectively, and then enter the bubble-free high-concentration ozone water preparation device 5, Mix uniformly in the bubble-free high-concentration ozone water preparation device 5, and the aeration head 24 at the end of the capillary is set and fixed on the aeration head fixing device 20 at each h...

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Abstract

The invention provides a catalytic ozonation system and method and application. The catalytic ozonation system comprises a catalytic ozonation reaction tank (6), a bubble-free high-concentration ozonewater preparation device (5) and a low-energy-consumption refrigerating device (2); high-concentration ozone water (15) enters the catalytic ozonation reaction tank (6) through a jet flow release device (16), fine bubbles are generated, the bubbles are sufficiently mixed with pre-treated waste water (18) to generate an ozonation reaction, and part of organic pollutants in the waste water are removed. The catalytic ozonation reaction tank (6) is filled with a mineral cushion layer (4) and a catalyst (17), the mineral cushion layer (4) and the catalyst (17) act with supersaturated dissolved oxygen and remaining soluble ozone in the high-concentration ozone water respectively to generate hydroxyl radicals, and the organic matter, which is difficult to degrade, in the waste water (18) is decomposed and removed. Compared with a conventional catalytic ozonation technology, the catalytic ozonation system can more efficiently remove the organic pollutants, which are difficult to degrade, in the water.

Description

technical field [0001] The invention relates to an advanced treatment system for refractory organic pollutants in waste water and its application, in particular to an ozone catalytic oxidation treatment system and its application. Background technique [0002] Wastewater discharged from many industrial enterprises after secondary biochemical treatment also contains a large number of complex refractory, persistent, toxic, carcinogenic or mutagenic organic pollutants, such as drugs, personal care products (PPCPs), endocrine disruptors (EDCs) and other refractory organic compounds, the discharge of these substances into the water body not only destroys the beauty of the water body, but also disrupts the food chain of the water body ecosystem. Human body exposure to these organic pollutants will cause damage to the central nervous system, blood system, liver, lungs, kidneys and other major organs. Therefore, before being discharged into the environmental water body, industrial w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/78C02F101/30
CPCC02F1/725C02F1/78C02F2101/30C02F2201/782
Inventor 王建兵何灿陈卓苗侯嫔张春晖王春荣何绪文
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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