Novel recycling sludge treatment system and treatment method

Abstract

The invention provides a novel recycling sludge treatment system and belongs to the technical field of sludge treatment. A sludge pretreatment unit comprises a sludge storage bunker, an adjustment device and an inorganic salt dissolving device which are sequentially connected, a separation unit comprises an inorganic salt extraction device and a desanding device, an organic matter treatment unit comprises an organic matter sludge solution storage tank, a dehydration device, a drying device and an incinerator which are sequentially connected, an inorganic matter treatment unit comprises an inorganic matter solution storage tank, a primary sedimentation device and a primary sedimentation filtering device which are sequentially connected, the primary sedimentation device is connected with a secondary sedimentation device, the secondary sedimentation device is connected with a secondary sedimentation filtering device, and a sewage treatment unit comprises a sewage storage tank and a sewage treatment system. Inorganic matters and organic matters in the sludge are effectively separated and respectively utilized, the harmless treatment of the sludge is implemented while sludge recycle and reduction is achieved, the purpose of cleaner production is achieved, and economic, social and environmental benefits are remarkable.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a novel resource-based sludge treatment system and treatment method. Background technique [0002] With the improvement of sewage treatment and discharge standards in recent years, the traditional biochemical treatment process of sewage plants has been unable to meet the discharge requirements of total phosphorus. At the same time, considering the cost factor, most water plants use chemical phosphorus removal methods and add a large amount of iron to the treatment process. Salt or aluminum salt flocculants mix a large amount of inorganic metal salts into the activated sludge of water plants, thereby reducing the organic components in the mixed sludge, and finally lead to the fact that inorganic salts account for dry sewage in the sludge of sewage plants. 35% or even more of the sludge component brings many problems to the subsequent treatment and disposal of the sludge. ...

AI Technical Summary

Problems solved by technology

However, this method can only play a mitigating role, and cannot fundamentally eliminate the pollution of heavy metals to the soil. With the change of environmental conditions and the passage of time, heavy metals will still enter the environment and cause pollution.

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