Device for relieving membrane pollution of electric reinforced separation membrane and synchronously promoting methane production

Abstract

The invention provides a device for relieving membrane pollution of an electric reinforced separation membrane and synchronously promoting methane production. A membrane separation technology, an anaerobic microbial technology and a bioelectrochemistry technology are organically combined. The device relates to the technical field of sewage treatment. The device provided by the invention belongs toan integrated immersed anaerobic membrane bioreactor, which comprises a reactor main body, a separation membrane assembly, a three-phase separator, a pressure detection device, a water pump, a temperature control device, a power supply device and the like, wherein the separation membrane assembly is made of conductive materials, so that the dual effects of filtering and biological cathodes are achieved. The device can reach the following effects that on one hand, the sludge loss can be reduced through interception; meanwhile, electrical bias is applied onto the surface of the membrane; the occurrence of membrane pollution is relieved through the static electricity repulsion effect; on the other hand, through the introduction of an electric field, the growth and metabolism of electric active microbes can be stimulated; the organic matter conversion efficiency in the anaerobic reaction is enhanced, so that the treatment efficiency and the outlet water quality can be improved; in addition, energy sources can be recovered from sewage in a biogas mode; the operation energy loss can be supplemented.

Description

technical field [0001] The invention relates to a device for mitigating membrane fouling and synchronously promoting methane production through an electrically strengthened separation membrane, which belongs to the technical field of sewage treatment. Background technique [0002] In recent years, as a new technology, the anaerobic membrane bioreactor has received widespread attention in the field of sewage treatment. It is the coupling of membrane separation technology and anaerobic biological technology. Good, and energy recovery and other advantages. However, due to the need to improve the yield and conversion rate of energy gas, the serious problem of membrane fouling and the increased cost have restricted its large-scale application, so appropriate measures should be taken to promote gas production, control and alleviate membrane fouling, and combine Membrane characteristics for reactor optimization become a key issue. [0003] Studies have shown that the main causes ...

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Problems solved by technology

However, due to the need to improve the yield and conversion rate of energy gas, the serious problem of membrane fouling and the increased cost have restricted its large-scale application, so appropriate measures should be taken to promote gas production, control and alleviate membrane fouling, and combine Membrane characteristics for reactor optimization become a key issue

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