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Electrochemical and anaerobic membrane combined biological sewage treatment plant and treatment method thereof

The technology of a sewage treatment device and a sewage treatment method, which is applied in the field of water treatment, can solve problems such as pollution, and achieve the effects of alleviating membrane pollution, reducing sludge viscosity and promoting sludge agglomeration.

Active Publication Date: 2019-12-03
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main factor limiting the application of anaerobic membrane bioreactor is still membrane fouling

Method used

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  • Electrochemical and anaerobic membrane combined biological sewage treatment plant and treatment method thereof
  • Electrochemical and anaerobic membrane combined biological sewage treatment plant and treatment method thereof

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Experimental program
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Effect test

Embodiment 1

[0071] This embodiment provides an electrochemical anaerobic membrane biological sewage treatment device, the electrochemical anaerobic membrane biological sewage treatment device is as follows figure 1 It includes a reaction pool 3 , and a sacrificial anode electrode 1 , a non-sacrificial anode electrode 2 and a cathode 4 of a membrane module are arranged in the reaction pool 3 .

[0072] The electrochemical anaerobic membrane biological sewage treatment device also includes a power supply device 5, and the power supply device 5 is a DC power supply. The positive pole of the power supply device 5 is electrically connected to the sacrificial anode electrode 1 and the non-sacrificial anode electrode 2 respectively independently, and the negative pole of the power supply device 5 is electrically connected to the cathode 4 of the membrane module.

[0073] The sacrificial anode electrode 1 is an iron electrode, the non-sacrificial anode electrode 2 is a graphite electrode, and the...

Embodiment 2

[0075] The difference between this embodiment and embodiment 1 is that the sacrificial anode electrode 1 is an aluminum electrode, the non-sacrificial anode electrode 2 is a carbon felt electrode, and the metal membrane is a tubular ultrafiltration membrane. Other devices and their connections are the same as in Embodiment 1.

Embodiment 3

[0077] The difference between this embodiment and embodiment 1 is that the non-sacrificial anode electrode 2 is a stainless steel electrode, and the metal membrane is a tubular nanofiltration membrane. Other devices and their connections are the same as in Embodiment 1.

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Abstract

The invention provides an electrochemical and anaerobic membrane combined biological sewage treatment plant and a treatment method thereof. The electrochemical and anaerobic membrane combined biological sewage treatment plant comprises a reaction tank in which a sacrificial anode electrode, a non-sacrificial anode electrode and a membrane module cathode are disposed. The electrochemical and anaerobic membrane combined biological sewage treatment plant further comprises a power supply device. A positive electrode of the power supply device is electrically and independently connected to the sacrificial anode electrode and the non-sacrificial anode electrode, respectively, and a negative electrode of the power supply device is electrically connected to the membrane module cathode. According to the present invention, electrochemistry and an anaerobic membrane bioreactor are combined, and pre-removal of pollutants, increase of sludge size and neutralization of sludge surface charges are achieved through electroflocculation; pollutants are electrostatically repelled by means of an electric field, and the morphology of a filter cake layer is improved by a hydrogen evolution reaction, achieving in-situ electrical cleaning of the membrane surface; the activity of microorganisms is stimulated by the electric filed so as to increase the metabolic rate of the microorganisms and promoting amethane yield. Moreover, pH decrease caused by metabolic acid production by microorganisms is mitigated by metal ions from electroflocculation.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a sewage treatment device and a treatment method thereof, in particular to an electrochemical anaerobic membrane biological sewage treatment device and a treatment method thereof. Background technique [0002] The water crisis caused by water pollution and water resource shortage has become one of the most severe challenges facing the development and progress of human society. In recent years, with the rapid increase of the global population and the continuous improvement of people's living standards, domestic water consumption and industrial and agricultural water consumption have continued to increase, making the originally scarce fresh water resources more scarce, and human survival, production and life are facing severe challenges. [0003] Membrane separation technology is a water treatment technology that has been widely used in recent years. Commonly used membrane se...

Claims

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Application Information

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IPC IPC(8): C02F1/463C02F3/28
CPCC02F1/463C02F3/2853C02F2203/006
Inventor 胡承志苏帆曲久辉孙境求马百文吴言
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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