Sludge soli-liquid separation treatment method and device

Abstract

The invention provides a sludge soli-liquid separation treatment method. Sewage passes through a sewage inlet and flows into a working cavity; a spiral pushing separation system drives the sewage to move in the spiral direction; the spiral pushing separation system extrudes the sewage and the sewage is subjected to soli-liquid separation into the sludge and clear water; the clear water passes through a water filter channel and flows into a spiral shaft, and the clear water permeates into a lamination filter system through fine movable filter seams and flows out through a water outlet; the sludge flows out through a sludge discharge hole under driving of the spiral pushing separation system. The invention further provides a sludge soli-liquid separation treatment device. According to the sludge soli-liquid separation treatment method, the spiral pushing separation system pushes and extrudes the sewage multiple times, the lamination filter system filters the sewage, accordingly, the sludge with lower water content is obtained, and the device is totally better than a sludge water extractor on the present market, is high in practicability, and is easily popularized.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a sludge solid-liquid separation treatment method and equipment. Background technique [0002] A sludge treatment method that removes water from fluidized primary, concentrated or digested sludge and converts it into semi-solid or solid sludge. After dehydration, the moisture content of the sludge can be reduced to 55% to 100%. Eighty percent, depending on the nature of the sludge and sediment and the effectiveness of the dewatering equipment. The further dehydration of sludge is called sludge drying, and the moisture content of dried sludge is less than 10%. Dehydration methods mainly include natural drying method, mechanical dehydration method and granulation method. Natural drying method and mechanical dehydration method are suitable for sewage sludge. The granulation method is suitable for coagulation and sedimentation of sludge. [0003] In sewage treatment plants, sludge...

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Problems solved by technology

[0003] In sewage treatment plants, sludge is an inevitable product after sewage treatment. According to national regulations, the moisture content of sludge is required to reach 60%. In order to obtain sludge with a higher dehydration rate, sludge solid-liquid separation treatment equipment emerges in endlessly, but Generally, the structure is single, the dehydration method is single, the cost is expensive, the efficiency is low, the energy consumption is high, and the dehydration rate is low

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