A kind of petrochemical wastewater treatment method based on heterogeneous catalytic ozone oxidation

A heterogeneous catalysis, petrochemical wastewater technology, applied in the oxidation water/sewage treatment, natural water treatment, multi-stage water treatment and other directions, can solve the problems of poor treatment effect, poor stability of metal oxides, low recovery rate, etc. Achieve the effect of improving treatment efficiency, saving costs, and high catalytic activity

Active Publication Date: 2022-07-19
CHINESE RES ACAD OF ENVIRONMENTAL SCI +1
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  • Application Information

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Problems solved by technology

However, metal oxides are limited in engineering applications due to their poor stability and low recovery rate. Therefore, the existing heterogeneous catalysts and their treatment methods are suitable for the petrochemical The wastewater treatment effect is not good

Method used

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  • A kind of petrochemical wastewater treatment method based on heterogeneous catalytic ozone oxidation
  • A kind of petrochemical wastewater treatment method based on heterogeneous catalytic ozone oxidation
  • A kind of petrochemical wastewater treatment method based on heterogeneous catalytic ozone oxidation

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Effect test

Embodiment 1

[0034] A petrochemical wastewater treatment method based on heterogeneous catalytic ozone oxidation, comprising the following steps:

[0035] S1, catalyst preparation:

[0036] S1-1, carrier selection: select activated alumina and activated carbon as the carrier of the catalyst, and the activated alumina is γ-Al 2 O 3The activation method of activated alumina is as follows: the alumina is washed with deionized water for 3 times, then soaked in a hydrochloric acid solution with a concentration of 0.1 mol / L for activation for 2 h, and dried to obtain activated alumina. The weight of activated alumina and activated carbon The ratio is 3:1, and the activated alumina and activated carbon are ground separately, so that the particle size of the activated alumina is 5mm, and the particle size of the activated carbon is 6mm;

[0037] S1-2. Activated alumina metal impregnation: pour the mixed metal impregnant composed of copper nitrate and manganese nitrate into the impregnation tank,...

Embodiment 2

[0047] This embodiment is basically the same as Embodiment 1, and the difference lies in:

[0048] In S1-1, activated alumina is α-Al 2 O 3 , The activation method of activated alumina is as follows: the alumina is washed with deionized water for 3 times, then soaked in a hydrochloric acid solution with a concentration of 0.2mol / L for activation for 2h, and dried to obtain activated alumina. The weight of activated alumina and activated carbon The ratio is 3:1, and the activated alumina and activated carbon are ground separately so that the particle size of the activated alumina is 8 mm and the particle size of the activated carbon is 10 mm.

Embodiment 3

[0050] This embodiment is basically the same as Embodiment 1, and the difference lies in:

[0051] In S1-1, the activated alumina and the activated carbon were respectively ground so that the particle size of the activated alumina was 6 mm and the particle size of the activated carbon was 8 mm.

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Abstract

The invention discloses a petrochemical wastewater treatment method based on heterogeneous catalytic ozone oxidation, comprising the following steps: S1, catalyst preparation: S1-1, carrier selection; S1-2, activated alumina metal impregnation; S1-3, activated carbon Metal impregnation; S1‑4, mixing; S2, petrochemical wastewater step-by-step treatment: S2‑1, petrochemical wastewater classification; S2‑2, primary treatment; S2‑3, secondary treatment; S2‑4, tertiary treatment; S2 ‑5. Four-level processing. The petrochemical wastewater treatment method of the present invention improves the catalyst and the preparation method thereof, so that the catalyst has higher catalytic activity for the refractory organic compounds (especially hydrophilic components) in the secondary effluent of petrochemical wastewater. On the basis of the catalyst, the ozone oxidation treatment steps are optimized, so that the optimized petrochemical wastewater treatment method can have a good treatment effect, and at the same time, the resources are maximized, and the cost is effectively saved.

Description

technical field [0001] The invention relates to the technical field of petrochemical wastewater treatment, in particular to a petrochemical wastewater treatment method based on heterogeneous catalytic ozone oxidation. Background technique [0002] The petrochemical industry is closely related to the development of society, and its by-products include refined oil, chemical raw materials, etc., which is a very important industry. The scale of petrochemical production generally tends to be large, and a large amount of solvents and additives need to be added in the production process, and various reactions will occur during the production process. Therefore, the amount of wastewater produced by petrochemical production is large and the composition is quite complex. [0003] The pollutants contained in petrochemical wastewater are mainly hydrocarbons and their derivatives. Some petrochemical wastewaters are still high in COD or other pollutants after simple treatment, and there a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J23/72C02F1/72C02F1/78C02F103/36
CPCB01J23/8892B01J23/72C02F1/725C02F1/78C02F2301/08C02F2103/365
Inventor 吴昌永付丽亚王辉
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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