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Technology for treating organic wastewater through catalytic wet ozone oxidation

A technology of organic wastewater and ozone oxidation, which is applied in the fields of oxidized water/sewage treatment, special compound water treatment, water/sewage treatment, etc. It can solve the problem of low ozone utilization rate and achieve easy operation, high reactivity and stability in use. , The effect of the method and process is simple

Pending Publication Date: 2018-05-25
FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them can fundamentally solve the problem of low ozone utilization rate.

Method used

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  • Technology for treating organic wastewater through catalytic wet ozone oxidation
  • Technology for treating organic wastewater through catalytic wet ozone oxidation
  • Technology for treating organic wastewater through catalytic wet ozone oxidation

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] Preparation of Catalyst A1 (Fe / ZSM-5)

[0021] The diameter is 2.0mm, the specific surface area is 320m 2 / g, pore volume 0.3 cm 3 / g, the commercial ZSM-5 molecular sieve strip carrier with an average pore size of 2.4nm was dried at 120°C for later use. Weigh 500g of the ZSM-5 molecular sieve carrier, and use Fe(NO 3 ) 3 9H 2 O by Fe 2 o 3 Accounting for the ratio of 7.5% of the total weight of the catalyst to prepare a 1000mL solution. Impregnate the ZSM-5 carrier with an equal volume of this solution, stir in a constant temperature water bath at 60°C for 3 hours, let it stand in the air for 24 hours, and then evaporate it to dryness with a rotary evaporator at 80°C, and dry the obtained sample in a drying oven at 100°C. Then it was calcined in a muffle furnace at 550° C. for 4 hours, and the temperature was lowered to room temperature, and then taken out to obtain catalyst A1.

[0022] Preparation of Catalyst A2 (Cu-Ce / TS-1)

[0023] The diameter is 2.0mm, t...

Embodiment 1

[0033] The catalysts A1 and B1 are loaded into the cylindrical reactor according to the volume percentage of 50% and 50% respectively, and the total volume of the catalyst is 100cm 3 . Acid scarlet simulated dye wastewater (COD: 286.3 mg / L) enters the reactor from the bottom of the reactor at a rate of 200 mL / h, the residence time in the catalyst bed is 30 minutes, and the ozone concentration is 9.5 g / m 3 , at a rate of 400 mL / min, enters the bottom of the reactor together with the waste water. The reaction is carried out at normal temperature and pressure. After the reaction, the COD of the liquid is tested, and the catalyst activity is measured according to the removal rate of COD. The ozone concentration before and after the reactor is detected online with an ozone detector to calculate the effective utilization rate of ozone. The results are listed in Table 1.

Embodiment 2

[0035] Catalysts A2 and B1 were loaded into the reactor according to volume percentages of 40% and 60% respectively, and the reaction conditions were the same as in Example 1. The results are listed in Table 1.

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Abstract

The invention relates to the technical field of wastewater treatment, and particularly discloses a technology for treating organic wastewater through catalytic wet ozone oxidation. The technology comprises steps as follows: the organic wastewater and ozone enter a reactor for a reaction, and the reactor is sequentially filled with a catalyst A and a catalyst B according to the contact sequence with the organic wastewater. The technology is simple and good in stability, not only is COD removing capacity high, but also effective utilization rate of ozone can be increased and adding amount of ozone can be reduced.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a treatment process for organic wastewater. Background technique [0002] A large amount of organic polluted wastewater caused by industrial production has seriously affected the living conditions of human beings and the ecological environment, and has become an increasingly serious social and economic problem. It is especially difficult to treat organic wastewater that is difficult to biodegrade; Increasingly scarce, the state has become more stringent on the total discharge of pollutants in water, and the formulation of new standards has brought new challenges to the prevention and control of water pollution in my country's refining and chemical enterprises. After the refining and chemical enterprises use the existing secondary biochemical process, the discharge Most of the waste water still cannot meet the discharge requirements of the new standard. Therefore, it is nece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/78
CPCC02F1/725C02F1/78C02F2101/30C02F2101/308C02F2101/32C02F2305/02
Inventor 赵越蒋广安李宝忠张晔刘忠生
Owner FUSHUN RES INST OF PETROLEUM & PETROCHEMICALS SINOPEC CORP
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