Washing recycling treatment process of sludge from physical and chemical treatment and special apparatus for process

A treatment process and special equipment technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of low efficiency of physical and chemical sludge treatment, secondary pollution, etc., reduce environmental pollution and floor space, and realize resource utilization Effect

Active Publication Date: 2015-09-16
SHANGHAI JINGYU ENVIRONMENT ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a physical and chemical sludge washing resource recovery process and its special equipment for the technical defects of the existing sludge treatment technology, which is low in efficiency and prone to secondary pollution. The sludge undergoes a treatment process of primary dissolution, primary dehydration, secondary dissolution, secondary dehydration, tertiary dissolution, and tertiary dehydration. The moisture content of the finally obtained inorganic sludge is below 60%, and the potassium, sodium, and chlorine contents are uniform Reduced to about 0.06%, it can be used as cement kiln ingredients, reducing environmental pollution and land occupation caused by sludge landfill, and completely realizing the resource utilization of sludge

Method used

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  • Washing recycling treatment process of sludge from physical and chemical treatment and special apparatus for process
  • Washing recycling treatment process of sludge from physical and chemical treatment and special apparatus for process

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Embodiment

[0029] as attached figure 2 The special equipment for the physical and chemical sludge washing and recycling treatment process shown includes a primary dissolution tank 1, a primary sludge dehydration unit 2, impurity removal purification and evaporation crystallization equipment 3, a secondary dissolution tank 4, and secondary sludge dehydration Unit 5, tertiary dissolving tank 6, tertiary sludge dehydration unit 7.

[0030] The sludge silo 8 is connected to the first-stage dissolving tank 1, and the connecting pipeline is equipped with a feed pump 9, the output end of the first-stage dissolving tank 1 is connected to the first-stage sludge dewatering unit 2, and the filtrate output of the first-stage sludge dewatering unit 2 The end is connected to the impurity removal, purification and evaporation crystallization equipment 3, the dewatered sludge end is connected to the secondary dissolution tank 4, the sedimentation sludge end of the impurity removal, purification and eva...

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Abstract

The invention provides a washing recycling treatment process of sludge from physical and chemical treatment and a special apparatus for the process. According to the process, the sludge from physical and chemical treatment is treated by use of a method of primary dissolution, primary dehydration, secondary dissolution, secondary dehydration, third dissolution and third dehydration, and finally, the obtained inorganic sludge has the moisture content below 60%, and the content of each of potassium, sodium and chlorine in the inorganic sludge is reduced to about 0.06%; as a result, the obtained inorganic sludge can be used as a cement kiln ingredient; the environmental pollution and the floor area due to sludge landfill are reduced; meanwhile, impurity removal purification and evaporative crystallization are performed on the filtrate, and the obtained salt products can be sold to the outside; and as a result, the sludge recycling is thoroughly realized.

Description

technical field [0001] The invention belongs to the technical field of waste resource treatment, and specifically relates to a physical and chemical sludge washing resource treatment process and its special equipment. The physical and chemical sludge is dissolved, washed and dehydrated to reduce the dissolved salt content of the sludge, which can be used as The cement kiln ingredients are used, and the filtrate is purified and evaporated to crystallize at the same time to obtain salt products, which realizes the reduction and resource utilization of sludge. Background technique [0002] In the field of water treatment industry, especially in modern industrial wastewater treatment, due to the complex composition of wastewater, it is difficult to biodegrade, so physical and chemical methods are commonly used methods for wastewater treatment. However, in the process of physical and chemical treatment, a large amount of physical and chemical sludge is produced. Physical and chem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 潘文刚夏俊方张水水陆魁肖龙博
Owner SHANGHAI JINGYU ENVIRONMENT ENG
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