An anaerobic membrane bioreactor for sewage treatment

Abstract

The invention discloses an anaerobic membrane bioreactor for sewage treatment, which comprises a casing and a filter material layer arranged in the casing, and also includes: a high-pressure gas recoil structure arranged above the filter material layer, including a high-pressure gas distribution Structure and multiple high-pressure gas nozzles arranged on the high-pressure gas distribution structure, the opening of the high-pressure gas nozzles faces the filter material layer; the low-pressure gas disturbance structure is set under the filter material layer, including the low-pressure gas distribution structure and the low-pressure gas distribution structure There are multiple low-pressure gas nozzles in the structure, and the openings of the low-pressure gas nozzles face the filter material layer. When the filter material layer is clogged, the high-pressure gas jetted from the high-pressure gas nozzle will backwash the filter material layer. When the filter material layer is not blocked, use the low-pressure gas nozzle to spray low-pressure gas near the filter material layer to increase the fluidity of sewage near the filter material layer and increase the disturbance, thereby increasing the scouring effect of sewage on the filter material layer and prolonging the life of the filter material layer. Blockage cycle, increase the treatment effect of the reactor, reduce the number of backwashing.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an anaerobic membrane bioreactor for sewage treatment. Background technique [0002] Anaerobic treatment technology has been developed for many years. Wastewater anaerobic treatment technology has developed rapidly because of its low operating cost, available biogas generation and a series of advantages in treating high-concentration wastewater. Anaerobic biological treatment is the conversion of most organic matter into methane and carbon dioxide under anaerobic conditions with the help of transgenic anaerobic bacteria and facultative anaerobic bacteria. [0003] At present, the filter material layer in the existing anaerobic membrane bioreactor used for sewage treatment will be blocked frequently, and the backwashing after the blockage is not uniform enough, and all the blocked filter material layers cannot be cleaned, resulting in blockage There will still be partial...

AI Technical Summary

Problems solved by technology

[0003] At present, the filter material layer in the existing anaerobic membrane bioreactor used for sewage treatment will be blocked frequently, and the backwashing after the blockage is not uniform enough, and all the blocked filter material layers cannot be cleaned, resulting in blockage There will still be partial blockage in the future

Therefore, the treatment effect of the anaerobic membrane bioreactor is greatly reduced, and after the existing anaerobic membrane bioreactor has been washed many times, the sludge may enter the outlet pipe with the sewage, and after a long period of accumulation, resulting in Blockage of the outlet pipe

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