Sludge treatment system, sewage and sludge treatment system and sewage and sludge treatment method

Abstract

The invention relates to a sludge treatment system, a sewage and sludge treatment system and a sewage and sludge treatment method. The sludge treatment system comprises a sludge tank and a dewatering system, wherein the sludge tank is filled with sludge, and the dewatering system is used for dewatering sludge. A sludge thickening device is further disposed between the sludge tank and the dewatering system. Sludge discharged from the sludge tank enters the sludge thickening device for thickening, supernatant in the sludge thickening device is discharged, and thickened sludge enters the dewatering system. The sludge discharged from the sludge tank enters the sludge thickening device for thickening first and then discharged into the dewatering system, so that water content of the sludge can be reduced, and influences on the dewatering system can be reduced. In addition, the sludge treatment system can be used with a sewage pretreatment system to treat sludge from the sewage pretreatment system, filtrate can be reused by the sewage pretreatment system after sludge treatment, and thereby effective cyclic treatment can be realized and environmental hazards can be reduced.

Description

technical field [0001] The present invention relates to a treatment system and method for sludge and sewage, more specifically, a sludge treatment system, sewage and sludge treatment system and method that can be used in waste incineration plants or waste incineration power plants. Background technique [0002] With the improvement of living standards and the rapid development of modern cities, the problem of domestic waste pollution has become increasingly prominent. Domestic waste treatment methods mainly include incineration, composting, mechanical treatment and landfill. The traditional landfill treatment of municipal solid waste is subject to more and more restrictions. According to the basic principles of harmlessness, reduction and recycling of municipal solid waste, domestic waste incineration power generation has become a solution to urban domestic waste in recent years. New direction, the construction of waste incineration plants has developed rapidly in recent ye...

AI Technical Summary

Problems solved by technology

[0005] Although the current sludge treatment system can process and deliver the sludge, it still has the following defects: the moisture content of the sludge in the sludge tank is constantly changing in the range of 95%-99%, which causes the centrifugal dehydrator of the dehydration treatment system to The operating frequency is constantly changing, requiring special personnel to manage, and it is easy to block the material, causing the system to fail to operate normally

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