Comprehensive sludge water treatment system

Abstract

The invention provides a comprehensive sludge water treatment system. The comprehensive sludge water treatment system comprises a coagu-flocculation reaction tank, wherein one end of the coagu-flocculation reaction tank is communicated with concentrated and dehydrated sludge water, the other end of the coagu-flocculation reaction tank is connected with one clarification tank, the clarification tank is connected with one mixed reaction tank, the mixed reaction tank is connected with one sedimentation tank, the sedimentation tank is connected with a first aerobic tank, the first aerobic tank is connected with an anoxic tank, the anoxic tank is connected with a second aerobic tank, the other end of the mixed reaction tank is communicated with deeply dehydrated sludge water by virtue of a first pipeline, the anoxic tank is communicated with the deeply dehydrated sludge water by virtue of a second pipeline arranged at one side of the anoxic tank, a membrane separation unit is arranged inside the second aerobic tank, and the second aerobic tank also can be connected with a secondary sedimentation tank for realizing solid-liquid separation. The comprehensive sludge water treatment system has the advantages that waste control by waste is carried out inside a sewage treatment plant, organic matters, nitrogen and phosphorus in the sludge water can be efficiently removed at the same time, cost in addition of medicament for dephosphorization of the sludge water, alkaline substances and carbon source is saved, and treatment cost of the sludge water is greatly reduced.

Description

technical field [0001] The invention belongs to the fields of environmental protection and rational utilization of water resources, and relates to a water treatment device, in particular to a sludge water comprehensive treatment system. Background technique [0002] With the further improvement of China's urbanization construction, the rapid increase of sewage treatment volume has brought about a substantial increase in sludge production. However, due to the increasing shortage of land resources, sludge with a water content of 80% after concentration and dehydration can no longer meet the landfill requirements. The sludge needs to be further conditioned and dehydrated to reach a water content of less than 60% before it can be landfilled. At present, the advanced sludge dewatering technology has been practically applied in Shanghai Bailonggang, Hangzhou Qige, Wuxi Lucun, Xiamen, Jimei and other sewage treatment plants. Deeply dewatered sludge water is a kind of water by addi...

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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a comprehensive sludge water treatment system, which solves the problem of concentrated dewatered sludge water and deep dewatered sewage in the prior art. The technical problem that muddy water cannot be treated at the same time and the effect of nitrogen and phosphorus removal is not good

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