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Process for combined treatment on coal chemical wastewater with catalytic ozonation-MBR (membrane bioreactor)

A technology for ozone catalytic oxidation and coal chemical wastewater, applied in the direction of oxidized water/sewage treatment, water/sewage treatment, water treatment parameter control, etc., can solve the problems of effluent water quality that cannot be directly discharged, high cost of ozone preparation, low utilization efficiency, etc. , to achieve the effect of improving biodegradability, enhancing utilization rate and good removal effect

Inactive Publication Date: 2019-09-13
久沛(上海)环保科技有限公司
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  • Application Information

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Problems solved by technology

However, the preparation cost of ozone is high, the utilization efficiency is low, and the effluent water quality cannot be discharged directly

Method used

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  • Process for combined treatment on coal chemical wastewater with catalytic ozonation-MBR (membrane bioreactor)

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Embodiment

[0020] A process for combined treatment of coal chemical wastewater by ozone catalytic oxidation-MBR, comprising the following steps:

[0021] Step 1, pretreating the coal chemical wastewater to adjust the Ph value;

[0022] Step 2: Input the waste water into the first-level ozone catalytic oxidation tower for advanced oxidation treatment; the liquid level of the waste water in the first-level ozone catalytic oxidation tower is set at 3.5 to 4.5 meters.

[0023] Step 3: Input the effluent of the primary ozone catalytic oxidation tower into the secondary ozone catalytic oxidation tower, adjust the Ph value, and perform advanced oxidation treatment; the liquid level of the wastewater in the secondary ozone catalytic oxidation tower is set at 4.5 to 5.5 meters.

[0024] Step 4, connect the exhaust port of the first-level ozone catalytic oxidation tower to the upper end of the second-level ozone catalytic oxidation tower, further utilize ozone, and return the effluent of the secon...

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Abstract

The invention discloses a process for combined treatment on coal chemical wastewater with catalytic ozonation-MBR (membrane bioreactor). The process comprises the following steps: I, pretreating coalwastewater, and adjusting a pH value; II, inputting the wastewater into a primary catalytic ozonation tower, and carrying out high-class oxidation treatment; III, inputting the effluent of the primarycatalytic ozonation tower into a secondary catalytic ozonation tower, adjusting a pH value, and carrying out high-class oxidation treatment; IV, connecting the exhaust hole of the primary catalytic ozonation tower with the upper end of the secondary catalytic ozonation tower, enabling the effluent of the secondary catalytic ozonation tower the flow back into the primary catalytic ozonation tower,and further oxidizing and degrading organic matters through ozone; V, after the process is circulated for a certain time, carrying out on-line water quality monitoring on the effluent of the secondary catalytic ozonation tower, wherein the biochemistry property of the effluent is up to B / C greater than 0.3; and VI, inputting the effluent of the secondary catalytic ozonation tower into an MBR reaction tank, and directly discharging the effluent of the MBR reaction tank into a water body after detection qualification.

Description

technical field [0001] The invention relates to a process for combined treatment of coal chemical industry wastewater by ozone catalytic oxidation and MBR. Background technique [0002] The traditional water purification process is used in the sewage treatment process of my country's coal chemical industry. The traditional physical and chemical pretreatment and biochemical treatment cannot effectively treat the toxic substances in the wastewater. Therefore, in this way The wastewater obtained under the treatment still cannot meet the prescribed wastewater treatment standards. Therefore, it is very important to do advanced treatment of the water discharged by the coal chemical industry to reduce the degree of environmental pollution caused by the industry. [0003] The traditional oxidation technology and ozone catalytic oxidation technology meet the emission standards by degrading and destroying harmful substances in wastewater. In this process, the oxidation treatment of o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/66C02F1/725C02F1/78C02F3/1268C02F9/00C02F2209/08
Inventor 李飞杨名张魁洋
Owner 久沛(上海)环保科技有限公司
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