Ozone catalytic ozonation tower and gasified waste water treatment method utilizing same

A technology of ozone catalysis and oxidation tower, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., can solve the problems of cumbersome process, high investment and operation cost, and achieve simple process and low operation The effect of cost and simple operation

Active Publication Date: 2016-07-13
POTEN ENVIRONMENT GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention discloses an ozone catalytic oxidation tower, which is used to solve the problems that multiple reaction de

Method used

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  • Ozone catalytic ozonation tower and gasified waste water treatment method utilizing same

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Experimental program
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Embodiment 1

[0049] Carrier pretreatment step, select coal-based columnar activated carbon (diameter 6mm, specific surface area ≥ 800m 2 / g, compressive strength > 96N, bulk density > 0.45g / ml) is the ozone oxidation catalyst carrier material, washed 5 times with water, then soaked in 0.03mol / L dilute nitric acid for 40h, and finally washed with water to supernatant The pH of the liquid is neutral, and it is baked in an oven at 60°C for 48 hours for later use;

[0050] Dipping treatment step, preparation final concentration is respectively the mixed salt solution of 0.60mol / L manganese nitrate, 0.02mol / L nickel nitrate, 0.02mol / L ferric nitrate, 0.05mol / L cerium chloride, 0.08mol / L copper acetate, will Put the pretreated ozone oxidation catalyst carrier material into the above mixed salt solution according to the dosage of 140g / L, shake and impregnate in a water bath at 80°C for 8h, filter out the impregnated material after impregnation, and dry in an oven at 78°C for 28h , repeat the abo...

Embodiment 2

[0053] Carrier pretreatment step, select porous ceramic pellets (particle diameter is 5mm, specific surface area ≥ 240m 2 / g, compressive strength > 140N, bulk density > 0.17g / ml) is the ozone oxidation catalyst carrier material, washed twice with water, then soaked in 0.08mol / L dilute nitric acid for 24h, and finally washed with water to supernatant The pH of the liquid is neutral, and it is baked in an oven at 90°C for 24 hours for later use;

[0054] The impregnation treatment step is to prepare a mixed salt solution of manganese nitrate, nickel nitrate, iron nitrate, cerium nitrate, cobalt nitrate and copper nitrate with a final concentration of 0.10mol / L. Put the dosage of the above mixed salt solution into the above mixed salt solution, shake and impregnate in a water bath at 80°C for 24 hours, filter out the impregnation after the impregnation is completed, dry in an oven at 90°C for 24 hours, repeat the above impregnation operation twice, and set aside;

[0055] In th...

Embodiment 3

[0057] Carrier pretreatment step, select molecular sieve (model is ZSM-5, particle diameter is 6mm, specific surface area ≥ 350m 2 / g, compressive strength > 120N, SiO 2 / Al 2 o 3 25-400, bulk density > 0.75g / ml) is the carrier material of the ozone oxidation catalyst, washed with water for 4 times, then soaked in 0.04mol / L dilute nitric acid for 28 hours, and finally washed with water until the pH of the supernatant is neutral properties, baked in an oven at 65°C for 45 hours for later use;

[0058] Impregnation treatment step, preparing manganese nitrate, 0.60mol / L nickel sulfate, 0.60mol / L ferric chloride, 0.60mol / L cerium sulfate, 0.40mol / L cobalt chloride, 0.40mol / L copper chloride mixed solution, put the pretreated ozone oxidation catalyst support material into the above mixed salt solution according to the dosage of 40g / L, shake and impregnate in a water bath at 85°C for 30h, and use Filter out the impregnation, dry in an oven at 80°C for 24 hours, repeat the above ...

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Abstract

The embodiment of the invention discloses an ozone catalytic ozonation tower which comprises an oxidation tower body, an ozone generator, a circulating pump and a tail gas damage device, wherein the oxidation tower body comprises a first micro-porous aeration diffuser, a second micro-porous aeration diffuser, a catalyst layer, a water inlet, a water outlet, at least one oxidizing agent feeding hole, an exhaust port, a circulating water inlet and a circulating water outlet; the first micro-porous aeration diffuser is positioned at the bottom of the oxidation tower body; the second micro-porous aeration diffuser is positioned above the first micro-porous aeration diffuser; the catalyst layer is positioned above the second micro-porous aeration diffuser; the side wall of the oxidation tower body between the first micro-porous aeration diffuser and the second micro-porous aeration diffuser is sequentially provided with the water inlet and the circulating water inlet from bottom to top; the side wall of the oxidation tower body above the catalyst layer is sequentially provided with the circulating water outlet and the water outlet from bottom to top; the side wall of the oxidation tower body between the water inlet and the circulating water outlet is provided with at least one oxidizing agent feeding hole. The ozone catalytic ozonation tower is capable of reducing the dwell time of ozone in the tower and improving the ozone utilization rate.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, in particular to an ozone catalytic oxidation tower and a method for treating coal gasification wastewater using the same. Background technique [0002] The water quality composition of coal gasification wastewater is complex, which contains a large amount of organic pollutants such as phenols, biphenyls, pyridine, indole and quinoline, as well as toxic and harmful substances such as cyanide, inorganic fluoride ions and ammonia nitrogen. The concentration of pollutants is high, and the color The concentration is also high, and it is a high-concentration organic industrial wastewater that is difficult to biodegrade. Therefore, the treatment of coal gasification wastewater has always been a major problem in the field of wastewater treatment at home and abroad. [0003] In order to solve the above problems, the invention patent application with the Chinese application number 201110045...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F9/04B01J23/889B01J29/48B01J29/78
CPCB01J23/002B01J23/8892B01J29/48B01J29/78B01J2229/183B01J2523/00C02F1/5236C02F1/56C02F1/66C02F1/725C02F1/78C02F9/00C02F2301/08B01J2523/17B01J2523/3712B01J2523/72B01J2523/842B01J2523/847B01J2523/845
Inventor 乔瑞平耿翠玉蒋玮陈广升
Owner POTEN ENVIRONMENT GRP
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