Centrifugal pressure filtration sludge dewatering device

Abstract

The invention discloses a centrifugal pressure filtration sludge dewatering device. The centrifugal pressure filtration sludge dewatering device comprises a motor (1), a rotor drum (2) and a spiral pressure filter (3), wherein the spiral pressure filter (3) is arranged inside the rotor drum (2) and comprises a spiral shaft (3.1) and a spiral pressure filtration blade (3.2); the spiral shaft (3.1) is internally hollow and a sludge feeding channel (4) is formed inside the spiral shaft (3.1) and is used for feeding sludge into the rotor drum (2); a filter layer (5) and a drainage channel (6) are arranged on the spiral pressure filter (3); the drainage channel (6) is communicated with the rotor drum (2) through the filter layer (5); the spiral pressure filtration blade (3.2) and the rotor drum form a plurality of pressure filtration cavities (7); the pressure filtration cavities (7) shrink in sequence along the sludge moving direction. Through the centrifugal pressure filtration sludge dewatering device, the moisture content of sludge coming out from a sludge outlet meets the requirements, and the device can operate continuously, is high in production efficiency and ensures low moisture content of dewatered sludge.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a sludge centrifugal filter press dehydration device for sludge treatment. Background technique [0002] A large amount of sludge will be produced in the process of sewage treatment, and its quality accounts for about 0.3%-0.5% of the treated water. The investment and operation cost of sludge treatment are very huge, and the cost of sludge treatment generally accounts for 10% of the operating cost of sewage treatment plants. 20%-50%, bringing a heavy burden to sewage treatment. According to the relevant national regulations, there are certain requirements for the moisture content of sludge (below 60%). The sludge must be dehydrated so that the moisture content will reach a certain value before subsequent treatment can be carried out. Therefore, dehydration of sludge It is the key process of sewage treatment. [0003] Sludge dehydration methods mainly include natural drying metho...

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Problems solved by technology

[0004] In view of this, the present invention aims at the problems of high moisture content after dehydration and incapable of continuous production and operation in the above-mentioned prior art, and provides a sludge centrifugal filter press dewatering device that can operate continuously, has high production efficiency, and has low moisture content after dehydration. device

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