Apparatus and method for synchronous denitrification and development of sewage sludge internal carbon source of urban sewage

Abstract

The invention discloses a synchronous urban sewage denitrogenation and in-sludge carbon source development device and a method using the same. The device is provided with a nitration liquid raw water tank, a sludge denitrification reactor (SDR), a sedimentation tank and a sludge pool, wherein the SDR consists of a reaction chamber and a water bath heating sleeve arranged at the periphery of the reaction chamber; the sedimentation tank is provided with a central pipe and a conical baffle board; and the method making use of the device comprises the steps of starting and reaction cycle operation, etc. The synchronous urban sewage denitrogenation and in-sludge carbon source development device and the method using the same are suitable to be used in urban sewage treatment, and save carbon source along with high degree of automation, high efficiency and good effects.

Description

Simultaneous denitrification of urban sewage and carbon source development device and method in sludge technical field The invention relates to the technical field of biochemical treatment of urban sewage and sludge, using the volatile fatty acid VFA produced by the hydrolysis and acidification of the sludge in the primary sedimentation tank of the urban sewage treatment plant as the internal carbon source to simultaneously realize the denitrification of urban sewage and the stabilization of sludge The device and method are suitable for biological denitrification and sludge disposal of urban sewage or industrial wastewater with low carbon-to-nitrogen ratio (C / N). Background technique my country's water pollution continues to intensify, and the phenomenon of eutrophication caused by the excessive accumulation of nitrogen and phosphorus in natural water bodies continues to erupt. Social development. Therefore, improving the denitrification efficiency of urban sewage and indu...

AI Technical Summary

Problems solved by technology

For urban sewage with low C / N, the lack of organic carbon source is the barrier that cannot improve its denitrification efficiency, and the addition of carbon source will increase the cost of sewage denitrification

At the same time, the reasonable disposal of a large amount of sludge generated in the sewage treatment process is a costly and difficult task, and its construction cost accounts for about 40% of the total construction cost of the entire sewage treatment plant.

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