Sludge treatment system and process

Abstract

The invention discloses a sludge treatment system and a process. Sludge paste with the moisture content of 50% to 60% can be obtained by adopting a slurry hopper and a press filter and can be dried into clods with the moisture content of 40% or less through a drying unit. A drying room and a hot air supply circulating mechanism can exert a relatively good drying effect, an extruding mechanism anda circulating conveying mechanism are combined, and thus, materials are uniformly tiled and heated and are uniformly dried. According to the sludge treatment system and the process, sludge can be thickened and dehydrated, the volume weight of the sludge is greatly reduced, the decrement of the sludge is achieved, and the pollution caused by liquid permeation and odor emission is eliminated. By designing the hot air supply circulating mechanism, the operation of an evaporator can be effective, a circulating hot air supply is relatively dry, the materials in the drying room can be deeply dehumidified, the effect is remarkable, the loss of heat energy caused by hot-cold offset is lowered, and the utilization ratio of energy is increased. The circulating conveying mechanism is ingeniously designed, the circulation of the circulating hot air supply is facilitated, the materials are heated and dried uniformly, the space usage is relatively low, and thus, the requirements of materials on a thorough drying course in a limited space are met.

Description

technical field [0001] The invention relates to a sludge treatment system and process, and belongs to the technical field of sludge treatment. Background technique [0002] Sludge treatment: Concentrating, tempering, dehydrating, stabilizing, drying or incinerating sludge to reduce, stabilize and harmless the process. [0003] Sludge is the product of the sewage treatment process, which contains a large amount of organic matter, heavy metals and molds, etc. If no follow-up treatment is added, it will cause serious pollution to the environment. Therefore, it is often necessary to concentrate and dehydrate the sludge, but after this treatment The moisture content of the final sludge is usually above 70%, and the sludge needs to be further dried. [0004] In the prior art, the drying system used for sludge drying is mostly structured as the drying system disclosed in the Chinese patent document CN201058838Y, including a furnace body, a feeder connected to the feed port of the ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art, aiming at the problem of uneven heating of materials and waste of energy in the circulation of hot air humidity in traditional sludge treatment, a sludge treatment system and process are proposed

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