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Heterogeneous catalytic ozonization pharmaceutical wastewater treatment device and process

A technology of ozone catalytic oxidation and pharmaceutical wastewater, applied in the direction of oxidized water/sewage treatment, non-polluted water treatment, natural water treatment, etc., can solve the problems of poor ozone mass transfer efficiency, increased water treatment cost, and limit the use of ozone. Improve the service life, improve the utilization rate of ozone, and solve the effect of secondary pollutants

Inactive Publication Date: 2018-12-25
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong selectivity of ozone in degrading organic matter, and the poor mass transfer efficiency, low utilization rate and low reaction rate of ozone, the cost of water treatment has increased sharply, which limits the use of ozone in water treatment.

Method used

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  • Heterogeneous catalytic ozonization pharmaceutical wastewater treatment device and process
  • Heterogeneous catalytic ozonization pharmaceutical wastewater treatment device and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] a. Immerse 20g of ceramsite carrier with a diameter of 3-5mm in a mixed solution of 1mol / L nickel nitrate and ferric nitrate for 24h, dry at 110°C, and bake at 600°C for 5h to make a finished catalyst;

[0051] b. Spread the waste water and the catalyst in three layers on the first catalyst support plate 4, the second catalyst support plate 6, and the third catalyst support plate 10 of the ozone catalytic oxidation reactor in a ratio of 1:100 (liter / gram), forming Catalyst bed, the volume ratio of the three-layer catalyst bed is 1:2:1, and then the three sections of the ozone catalytic oxidation reactor are connected tightly with flanges.

[0052] The treated pharmaceutical wastewater is 7.2L, and the COD in the wastewater is 1000mg / L.

[0053] c. Use a pump to add pharmaceutical production wastewater into the ozone catalytic oxidation reactor, and the ozone gas flows into the ozone catalytic oxidation reactor through the inlet 1 and the wastewater, and then enters the ...

Embodiment 2

[0058] a. Immerse 20 g of a ceramsite carrier with a diameter of 4 mm in a mixed solution of 1 mol / L nickel nitrate and ferric nitrate for 24 h, dry at 105 ° C, and bake at 600 ° C for 5 h to make a finished catalyst;

[0059] b. Spread the waste water and the catalyst in three layers on the first catalyst support plate 4, the second catalyst support plate 6, and the third catalyst support plate 10 of the ozone catalytic oxidation reactor in a ratio of 1:100 (liter / gram), forming Catalyst bed, the volume ratio of the three-layer catalyst bed is 1:2:1, and then the three sections of the ozone catalytic oxidation reactor are connected tightly with flanges.

[0060] The treated pharmaceutical wastewater is 7.2L, and the COD in the wastewater is 1000mg / L.

[0061] c. Use a pump to add pharmaceutical production wastewater into the ozone catalytic oxidation reactor, and the ozone gas flows into the ozone catalytic oxidation reactor through the inlet 1 and the wastewater, and then en...

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Abstract

The invention relates to a heterogeneous catalytic ozonization pharmaceutical wastewater treatment device and process. The heterogeneous catalytic ozonization pharmaceutical wastewater treatment device comprises a catalytic ozonization reactor; the catalytic ozonization reactor is composed of a first-layer reactor, a second-layer reactor and a third-layer reactor which are sequentially connected from bottom to top, wherein the bottom of the first-layer reactor is provided with an air inlet 1, the side bottom of the first-layer reactor is provided with a water inlet 2, and the top of the third-layer reactor is provided with a tail ozone outlet 12; inside every reactor, a gas distributing plate, a catalyst bed and a catalyst support plate are arranged, and every catalyst bed is provided witha water outlet. When applied to treating pharmaceutical wastewater, the heterogeneous catalytic ozonization pharmaceutical wastewater treatment device and process can prolong the service life of catalysts; meanwhile, applied catalyst medium ceramic pellets are low in price and easy to acquire and can form a catalytic oxidation system together with ozone to effectively improve the utilization rateof ozone and reduce the production cost.

Description

technical field [0001] The invention relates to a device and a process for treating pharmaceutical wastewater by heterogeneous ozone catalytic oxidation, which belongs to the field of wastewater treatment. Background technique [0002] The pharmaceutical industry is one of the pillar industries of production in my country. With the development of the pharmaceutical industry, the discharge of wastewater is increasing, and the wastewater from pharmaceutical production has caused a non-negligible impact on the environment and human beings. Pharmaceutical wastewater has the characteristics of high concentration of organic matter, complex water quality, and poor biochemical properties. Traditional treatment methods have been unable to achieve good treatment effects in the process of treating pharmaceutical wastewater. Therefore, various advanced oxidation technologies are sought after by researchers. [0003] Ozone is a strong oxidant, because the decomposition product after the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/78C02F103/02
CPCC02F1/725C02F1/78C02F2103/026
Inventor 杨文玲吴赳王坦
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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