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Method and device for processing pharmaceutical wastewater by pulse electrocoagulation-MBR

A technology of pharmaceutical wastewater and pulse electricity, applied in water/sewage treatment, sustainable biological treatment, chemical instruments and methods, etc., can solve the problems of easy passivation of electrodes and high energy consumption, so as to improve treatment effect and reduce energy consumption , the effect of increasing the oxygen content

Active Publication Date: 2009-10-21
GO HIGHER ENVIRONMENT GRP CO LTD
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  • Abstract
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Problems solved by technology

[0009] At present, the relatively mature application is DC flocculation, but its disadvantages are high energy consumption and easy passivation of electrodes.

Method used

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  • Method and device for processing pharmaceutical wastewater by pulse electrocoagulation-MBR

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example 1

[0034] Example 1: The source of sewage is wastewater from a pharmaceutical factory, and the water quality conditions are: CODCr content 17000-20000mg·L-1, BOD content 7000-9000mg·L -1 , SS is 700mg·L -1 , ammonia nitrogen is 700mg·L -1 . Set the alternating pulse current intensity to 8A, the alternating pulse period to 6s, and the duty ratio r to 0.7. After treatment by pulse electrocoagulation-MBR process, the final effluent COD Cr Less than 50mg·L -1 , the total nitrogen concentration is less than 10mg·L -1 , the turbidity is less than 0.5mg·L -1 , reaching the first-class A standard for industry emissions;

example 2

[0035] Example 2: The source of sewage is wastewater from a pharmaceutical factory, and the water quality condition is: COD Cr Content 5000~8000mg·L -1 , BOD content 2500~10000mg·L -1 , SS is 500mg·L -1 , set the alternating pulse current intensity to 8A, the alternating pulse period to 6s, and the duty ratio r to 0.7. After treatment by pulse electrocoagulation-MBR process, the final effluent COD Cr Less than 50mg·L -1 , the turbidity is less than 0.5mg·L -1 , up to the first class A standard of industry emission.

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Abstract

The invention relates to a method and a device for processing pharmaceutical wastewater by pulse electrocoagulation-MBR. The main process of the method is a pulse electrocoagulation-chemical oxidation-MBR process. The device sequentially comprises a regulating reservoir, an electrocoagulation reactor, a chemical oxidation pond, an anoxic pond and a membrane bioreactor, wherein the electrocoagulation reactor adopts a pulse power supply for power supply, overcomes the problem that a polar plate is susceptible to passivation, has the characteristics of low energy consumption and high process efficiency, and can remove a major part of pollutants in the wastewater; the chemical oxidation pond plays a role in strong oxidative decomposition and converts difficult-to-degrade substances into biodegradable minor molecule substances; and the anoxic pond and the membrane bioreactor form an A / O process, the membrane bioreactor can effectively degrade organic substances, ammonia nitrogen and other pollutants in the wastewater, the processed waster water is filtered by a membrane and the effluent can reach an industrial grade A level. The process has the advantages of impact load resistance, stable effluent quality and low investment cost.

Description

technical field [0001] The invention belongs to the technical field of water treatment equipment, and relates to a pulse electrocoagulation-MBR method and device for treating pharmaceutical wastewater. Background technique [0002] Pharmaceutical wastewater pollutants have the characteristics of high content, high concentration of suspended solids, strong toxicity, many refractory substances, large fluctuations in water quality and volume, and complicated treatment. They have always been the focus and difficulty of industrial wastewater treatment. At present, internal electrolysis, coagulation and other physical and chemical methods and biological methods are generally used in the treatment of pharmaceutical wastewater. However, the physical and chemical methods have high energy consumption and large investment, and the biological process is relatively complicated. At the same time, there are long treatment periods, large seasonal influences, and unstable treatment results. ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/463C02F3/30C02F3/10C02F1/44C02F1/72C02F1/76C02F1/78
CPCY02W10/10
Inventor 陈福泰范正虹杜接弟赵敢敢
Owner GO HIGHER ENVIRONMENT GRP CO LTD
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