Environment-friendly sewage sludge recovery device

Abstract

The invention particularly relates to an environment-friendly sewage sludge recovery device. The device comprises an outer barrel, a second screen drum, a first screen drum and a rotating shaft, a first cavity used for containing solid impurities is formed in the first screen drum, a second cavity used for containing fluid sludge is formed by the outer circumferential surface of the first screen drum and the inner circumferential surface of the second screen drum, a third cavity for containing liquid sewage is formed by the outer circumference of the second screen drum and the inner circumferential surface of the outer barrel, and a discharging ring groove communicated with the second cavity and the outside is formed in the bottom end of the outer barrel; and the second cavity is provided with a first one-way spiral blade, a first fixing ring is arranged at the discharging ring groove, and a first rotating disc is arranged at the bottom of the first fixing ring. Through the first screen drum and the second screen drum, impurities, fluid sludge and liquid sewage are separated and fixed; and through the first one-way spiral blade, the sludge on the outer circumferential surface of the first screen drum and the sludge on the inner circumferential surface of the first screen drum are scraped, the problem of separation of the sludge and the sewage is solved, and the problem that the sludge is attached to the inner wall of recycling equipment is fundamentally solved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an environmental protection recovery device for sewage sludge. Background technique [0002] With the acceleration of urbanization, the amount of sewage produced is increasing year by year. In order to reduce the pollution of sewage to the environment, the state and enterprises have invested a lot of financial resources and established many sewage treatment plants to treat urban sewage. Sludge from some types of sewage has the advantage of being recycled, and it can be used as fertilizer or even as a raw material for combustion to generate electricity. [0003] In the prior art, when sludge and sewage are separated, a sewage treatment device is usually used to initially filter the sludge and sewage. The sewage treatment device uses a filter screen and puts in an appropriate flocculant to precipitate the sludge in the sewage. Then unload the filter screen and recycle th...

AI Technical Summary

Problems solved by technology

So there is such a problem: due to the entry of sewage and sludge together, some sludge will adhere to the inner wall of the sewage treatment device, thereby reducing the amount of sludge on the filter screen, which ultimately leads to a decrease in the amount of sludge recovered, and requires Disassemble the filter and then recycle it, the work efficiency is low

However, this device does not fundamentally solve the problem of sludge adhering to the inner wall of the treatment box

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