Method for landfilling and processing municipal sludge by using geotechnical filter bag

Abstract

The invention relates to a method for landfilling and processing municipal sludge by using a geotechnical filter bag, which comprises the following steps: first step, establishing a sludge dehydration landfill with an anti-seepage barrier layer and a sewage collection emission system; second step, placing the geotechnical filter bag with water permeability used for fixing the sludge on the sludge dehydration landfill; third step, filling sludge in the geotechnical filter bag, and dehydrating the filled sludge in the geotechnical filter bag; fourth step, landfilling the sludge when the water content of the filled sludge in the geotechnical filter bag reach the design standard. The method for landfilling and processing municipal sludge by using a geotechnical filter bag has the advantages of good effect for fixing sludge, high dehydration efficiency and easy operation. The stacked geotechnical filter bags reduce the required large land occupation for sludge natural anhydration treatment substantially. Compared with mechanical dehydration, the addition of a polymeric flocculant for dehydrating sludge reduces the energy consumption substantially. The components are easy for transporting, and the enforcement cost is low.

Description

technical field [0001] The invention relates to the field of environmental treatment such as sludge treatment and disposal, solid waste disposal, etc., and in particular relates to a method for landfilling urban sludge by using a geotechnical filter bag. Background technique [0002] With the rapid development of my country's economic construction, the requirements for environmental protection are becoming more and more important. The construction of urban sewage treatment plants is increasing, and the amount of sludge produced by sewage treatment plants is also increasing. Sludge is a solid-containing liquid with extremely high water content formed in the process of sewage treatment, and its volume can reach several times or even ten times the volume of solids contained in it. Sludge from urban sewage treatment plants has the characteristics of high water content, large volume, difficult to fix, and generation of malodorous gas. The purpose of sludge treatment and disposal ...

AI Technical Summary

Problems solved by technology

The first three are mechanical dehydration, but the moisture content of the sludge is still high, usually between 78% and 83%, and the specific energy consumption is high; the natural drying of the latter occupies a large area and is greatly affected by the climate. Odor is generated, and because the bottom mud in the storage yard is exposed, it is in direct contact with the surrounding environment, and if the residual water treatment in the storage yard is not up to standard, it will cause secondary pollution to the surrounding water body, groundwater and soil

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