A kind of sludge sludge water separation method

Abstract

The invention discloses a method for separating sludge from water, which is to sequentially add porous adsorption materials, soil modification materials, skeleton materials, characteristic engineering microorganisms, enzyme active materials, and flocculation net catch materials to the sludge, stir and disperse evenly, and then extrude A mud cake is obtained, the water content of the mud cake is 50-60%, the porosity is 50-65%, and the soil is soft. The present invention selects porous adsorption materials, soil modification materials, skeleton materials, characteristic microorganisms, enzyme active materials, and flocculation net catch materials to condition the sludge and press filter, which greatly reduces the moisture content of the sludge and does not escape from the sludge press filter, and the mud cake The loose thickness is large, the mud cake has high biological activity, and it does not smell bad when stacked and fermented.

Description

technical field [0001] The invention belongs to the field of sludge treatment, and in particular relates to a method for separating sludge and water. Background technique [0002] Sludge is a product of sewage or water supply treatment. It is an aggregate of a small amount of solids and a large amount of water, with a water content of more than 95%. Before the final treatment, a large amount of water in the sludge must be removed, and the landfill clearly requires that the moisture content of the sludge entering the landfill be below 60%. In order to reduce the moisture content of sludge, the methods currently used include sludge dehydration and incineration, adding ferric chloride, calcium oxide and other conditioners to condition the sludge, and then pressing and dehydrating. However, the cost of sludge drying and incineration is expensive, which cannot be afforded by general sewage treatment plants. After adding ferric chloride and calcium oxide to condition the sludge,...

AI Technical Summary

Problems solved by technology

However, the drying and incineration of sludge is expensive, and general sewage treatment plants cannot afford it.

After adding ferric chloride and calcium oxide to condition the sludge, press filter and dewater it. Although the water content is reduced, the mud cake is very hardened and the porosity of the mud cake is 20-30%, which cannot be used for land use. The formed mud cake is high in ammonia nitrogen and high Sulfides, high electrolytes, and high pH inhibit the growth and reproduction of microorganisms, delay composting efficiency, and continue to emit odors during stacking and storage, endangering the environment

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