Combined method for efficiently treating municipal sludge

Abstract

The invention provides a combined method for efficiently treating municipal sludge, aiming at treatment and disposal problems of sludge of a sewage treatment plant. Firstly, the sludge is dehydrated through mechanical dehydration equipment until the moisture content is reduced to be about 80%; the rear side of the mechanical dehydration equipment is in abutting joint with an electric osmosis dehydration device; the moisture content of the sludge, which is mechanically dehydrated, is further reduced to be about 60% under the working of the electric osmosis dehydration device; the relatively low sludge moisture content is matched with a good ventilation condition in a fermentation process and a certain ratio of bacterium agent, so that the dehydrated sludge can be rapidly heated in an ultrahigh-temperature aerobic fermentation process and the temperature can reach 105 DEG C at maximum, so that ultrahigh-temperature aerobic fermentation of the sludge is realized; and a final product can be used as a product for different resource utilization. The reducing, stable, harmless and resource utilization of the sludge can be realized so that the combined method has an important promotion effect on upgrading and reconstruction of the municipal sludge.

Description

technical field [0001] The invention relates to a combined process for efficiently treating urban sludge, belongs to the technical field of treatment and disposal of sludge discharged from urban sewage treatment plants, and can effectively solve the problem of difficult sludge treatment and disposal in domestic sewage treatment plants. Background technique [0002] With the rapid development of economy and society, the treatment capacity and treatment rate of urban sewage treatment plants are increasing year by year. At the same time, as a by-product of sewage treatment, the output of sludge is also increasing year by year. However, my country's sewage treatment industry has been affected by the tendency of "heavy water and light mud", so that the problem of sludge treatment and disposal has not been paid attention to and solved. Most of the sludge is discarded or landfilled. A large amount of accumulated sludge will not only occupy a large area of ​​land, but also directly ...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to propose a combined process for the treatment and disposal of sludge in sewage treatment plants, which can dehydrate the sludge without adding any chemicals. At the same time, it does not need to use rice husk, Auxiliary materials such as sawdust are used to adjust the moisture, and fermentation tanks are used for fermentation, and finally the reduction, stabilization, harmlessness and resource utilization of sludge are realized

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