Sludge treatment process

Abstract

The invention belongs to the field of environmental protection, and in particular relates to a sludge treatment process. The sludge treatment process comprises the following steps: 1) impurity removal: use multi-stage grille to filter out the garbage in the sludge; 2) pretreatment: utilize the three-stage sludge settling tank to pretreat the sludge to obtain the first, second, and The sludge in the three-stage sludge settling tank, the sludge slurry and the supernatant after being settled in the three-stage sludge settling tank; 3) solidification treatment: respectively adopt mixing solidification and dehydration solidification methods for the first, second, and third-stage sludge sedimentation The silt and silt slurry in the pond are dehydrated and solidified to obtain silt-solidified soils A and B; 4) stacking and aging: transport the silt-solidified soils A and B to a temporary storage yard and age them for 3 to 7 days to complete the treatment. The sludge treatment process of the present invention can simultaneously process particles and sludge with high viscosity and low water content, as well as sludge slurry with fine particles, organic matter and high water content, and is especially suitable for river courses with complex components, wide particle distribution, and large water content differences silt.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a sludge treatment process. Background technique [0002] With the rapid development of economic construction, frequent migration of human activities, accelerated urbanization, a large increase in sewage discharge, a large amount of sewage is directly discharged into lakes, coupled with rainfall, surface runoff, sand production and pollution, resulting in muddy water in rivers and lakes in some areas of my country The environmental situation has deteriorated sharply, and the silt surfaces of many rivers and lakes have been raised, and the silt deposits are so serious that silt deposits have increasingly become social public hazards, causing a series of environmental hazards. [0003] At present, domestic and foreign sludge treatment methods and processes mainly include natural drying method, vacuum preloading method, geotechnical tube bag method, mechanical dehy...

AI Technical Summary

Problems solved by technology

In fact, the silt content of most rivers is uneven, the composition is complex, the garbage is mixed more, the silt particle size is uneven, the particle size is wide, the viscosity is large, and the moisture content is different. The process of ① or ③ is directly used to treat the silt. At the same time of paying a high economic price, a better treatment effect cannot be obtained, which may cause the sludge with a low water content to lose its inherent potential

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