Process for concentrating, assimilating and treating flat plate film sludge synchronously

Abstract

A plate membrane sludge simultaneous thicking digestion processing technology relates to excess sludge thicking in sewage treatment process, which is applicable to the treatment of excess activated sludge or mixing sludge obtained from mixing excess activated sludge with primary sludge in sewage treatment process, excess sludge and humus sludge obtained from biological dephosphorization process. The invention adopts a plate membrane and a plate membrane thickening digestion tank composed of a thickening digestion tank with a aerating apparatus, utilizes ultrafiltration (micro-filtration) thickening of the plate membrane to replace conventional sludge thicking method, and also utilizes the aerating apparatus to wash and maintain the plate membrane, provides hypoxia environment to sludge digestion, gets the object of sludge simultaneous thicking, digestion. Comparing with conventional sludge thicking digestion processing technology, the invention has advantages of using small floor space, low operating cost, easy to realize automatic control, has good social benefit and economic benefit.

Description

technical field [0001] The flat membrane sludge synchronous concentration and digestion process is suitable for the excess activated sludge produced in the sewage treatment process or the mixed sludge of excess activated sludge and primary sludge or the excess sludge obtained in the process of biological phosphorus removal and The humic sludge is concentrated and digested. technical background [0002] At present, with the deepening of urban sewage treatment, the treatment and disposal of sludge has become a serious problem. The cost of sludge treatment and disposal accounts for almost half of the entire sewage treatment cost. However, there are many problems in the current conventional sludge concentration and digestion technology. [0003] At present, conventional sludge concentration methods include gravity concentration method, air flotation concentration method and mechanical concentration method. Gravity concentration method is currently the most widely used sludge c...

AI Technical Summary

Problems solved by technology

[0005] In view of the high cost and poor effect of the existing sludge concentration and digestion treatment, the present invention proposes to treat the remaining activated sludge discharged from the secondary sedimentation tank or the residual activated sludge and primary sedimentation sewage discharged from the secondary sedimentation tank during the sewage treatment process. Sludge and the remaining sludge produced in the biological phosphorus removal process are concentrated and digested simultaneously, and the treatment cost is low. The sludge concentration and digestion effect are good, which can effectively reduce the organic matter content in the sludge, and simultaneously achieve sludge stabilization Flat membrane sludge simultaneous concentration and digestion process for sludge reduction

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