Device and method for deep treatment of petrochemical wastewater secondary biochemical effluent

A technology for secondary biochemical effluent and petrochemical wastewater, applied in chemical instruments and methods, physical/chemical process catalysts, separation methods, etc., can solve the problem of low utilization rate of direct ozone oxidation, high substrate selectivity and energy consumption, and reaction speed. Slow and other problems, to achieve the effect of reducing investment and operation costs, reducing organic pollutants, and reducing dosage

Active Publication Date: 2020-06-19
BLUESTAR LEHIGH ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application research of ozone catalytic oxidation + biological treatment combined process has overcome the problems of low utilization rate of direct ozone oxidation, large dosage, slow reaction speed, substrate selectivity and high energy consumption, but the effluent water of catalytic oxidation reactor still remains There is also a certain concentration of ozone and hydroxyl radicals, which have strong oxidizing and bactericidal effects, and cannot directly enter the post-biochemical system. It takes a certain period of time to completely decompose the residual ozone and hydroxyl radicals to ensure that they are not harmful to microorganisms in the biological treatment process. Produce toxic effects and reduce the effect of biological further treatment

Method used

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  • Device and method for deep treatment of petrochemical wastewater secondary biochemical effluent
  • Device and method for deep treatment of petrochemical wastewater secondary biochemical effluent
  • Device and method for deep treatment of petrochemical wastewater secondary biochemical effluent

Examples

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Effect test

Embodiment 1

[0026] Embodiment 1, with reference to figure 1 , a treatment device for advanced treatment of petrochemical wastewater secondary biochemical effluent: the device includes a decomposition tank 1, and the decomposition tank 1 is equipped with a decomposition tank 1 divided into an upper ozone catalytic oxidation zone 2 and a lower ozone tail gas decomposition zone 7. The ozone catalytic oxidation zone 2 is connected to the waste water secondary sedimentation tank 4 through the water inlet pipeline 3, and the overflow pipe 10 leading from the upper part of the ozone catalytic oxidation zone 2 to the ozone tail gas decomposition zone 7 is arranged in the decomposition tank 1, and the ozone tail gas is decomposed The bottom of zone 7 is provided with manganese sand or ceramic packing 13, the ozone tail gas decomposition zone 7 is provided with a water outlet pipeline 11, and the bottom of the ozone catalytic oxidation zone 2 is fixed with an ozone aerator 9, and the ozone aerator 9...

Embodiment 2

[0028] Embodiment 2, with reference to figure 1 , a treatment device for advanced treatment of petrochemical wastewater secondary biochemical effluent: the volume ratio of the ozone catalytic oxidation zone to the ozone tail gas decomposition zone is 3:1; the top of the overflow pipe 10 is connected to the overflow pipe 10 The overflow tank 14. The filling ratio of the manganese sand or ceramic filler in the ozone tail gas decomposition zone is 10%; the filled manganese sand or ceramic filler is preferably an ozone decomposing agent filler whose active components are palladium and cesium. All the other are identical with embodiment 1.

Embodiment 3

[0029] Example 3, a method for advanced treatment of secondary biochemical effluent of petrochemical wastewater, using the treatment device for advanced treatment of secondary biochemical effluent of petrochemical wastewater described in Example 1, the steps are as follows:

[0030] (1) Ozone catalytic oxidation: The effluent from the secondary sedimentation tank of petrochemical wastewater enters the ozone catalytic oxidation zone through the water inlet pipeline for ozone catalytic oxidation treatment. During the treatment, ozone catalytic oxidant is added to improve the biodegradability of wastewater; the water in the ozone catalytic oxidation zone continues to rise After high, it enters the overflow pipe, and enters the ozone tail gas decomposition area through the overflow pipe;

[0031] (2) Ozone tail gas removal: The wastewater entering the ozone tail gas decomposition zone is decomposed in the ozone tail gas decomposition zone, and is filtered and decomposed by filler m...

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Abstract

The invention relates to a treatment device for deep treatment of petrochemical wastewater secondary biochemical effluent. The treatment device comprises a decomposition groove, wherein a sealing partition plate for dividing the decomposition groove into an ozone catalytic oxidation area positioned at the upper portion and an ozone tail gas decomposition area positioned at the lower portion is arranged in the decomposition groove, the ozone catalytic oxidation area is connected with a wastewater secondary sedimentation pool through a water inlet pipeline, an overflow pipe leading into the ozone tail gas decomposition area from the upper portion of the ozone catalytic oxidation area is arranged in the decomposition groove, manganese sand or a ceramic filler is arranged at the bottom of theozone tail gas decomposition area, a water outlet pipeline is arranged on the ozone tail gas decomposition area, an ozone aerator is fixedly arranged at the bottom of the ozone catalytic oxidation area and is connected with an ozone supply mechanism through an ozone pipeline, and the water outlet pipeline is connected into a biological aerated filter or other subsequent equipment. The invention also discloses a method for deep treatment of petrochemical wastewater secondary biochemical effluent. The method and the device provided by the invention can be used for deep treatment of petrochemicalwastewater secondary biochemical effluent, and have the advantages of high treatment efficiency, stable and up-to-standard treated effluent, low investment and low operation cost.

Description

technical field [0001] The invention relates to the treatment of petrochemical wastewater, in particular to a treatment device for advanced treatment of secondary biochemical effluent of petrochemical wastewater. The invention also relates to a method for advanced treatment of secondary biochemical effluent of petrochemical wastewater by using the aforementioned device, which belongs to the field of wastewater treatment. Background technique [0002] Petrochemical wastewater is mainly composed of wastewater containing various inorganic salts and organic matter produced in the process of petroleum extraction and refining. It contains pollutants such as oil, ammonia, salt, and phenol. The composition is complex and difficult to treat. After secondary biochemical treatment, most of the suspended solids and organic matter are removed, and the COD concentration of the effluent is relatively low, but it still has the characteristics of complex components, more characteristic pollut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78B01D53/66B01J23/889C02F101/30
CPCC02F1/78C02F1/725B01D53/66B01J23/8892B01J23/002C02F2101/30B01J2523/00B01J2523/17B01J2523/49B01J2523/55B01J2523/56B01J2523/72
Inventor 田凤蓉王开春杨志林李坤王克云洪磊孙文妮徐军
Owner BLUESTAR LEHIGH ENG INST CO LTD
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