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Dehydration and solidification method of sludge

A solidification method and sludge technology, applied in chemical instruments and methods, fixed/solidified sludge treatment, water/sludge/sewage treatment, etc. Inexpensive materials, low cost, and the effect of reducing the amount of use

Inactive Publication Date: 2020-09-04
CHINA FIRST METALLURGICAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the former will pollute the surrounding environment, while the latter mainly uses curing agents such as cement and lime, which are not effective when dealing with sludge with high water content or need to be mixed with a large amount of curing agent, so it is uneconomical

Method used

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  • Dehydration and solidification method of sludge
  • Dehydration and solidification method of sludge

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 with figure 2 As shown, a method for dehydration and solidification of silt, comprising steps: S1, constructing a sun-drying site on the spot-first build a trapezoidal embankment 1, then build a small cofferdam 2 on both sides of the embankment 1, and finally build a small cofferdam 2 inside the cofferdam 2 Buried drainage pipe 8, laying permeable layer on the working surface, digging drainage ditches 3 outside; S2, stacking the silt 4 in the refurbishment site for dehydration—the excavator 7 is walking on the embankment 1, and the silt 4 is stacked obliquely on the side of the embankment 1 and the surrounding Between the working faces of the weir 2, it is leveled by the excavator 7, and the sludge 4 is drained under the action of self-weight extrusion and evaporation. Throw and fill from one side of the embankment 1 to the ot...

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Abstract

The invention discloses a dehydration and solidification method of sludge. Sludge is stacked on a tedding site for tedding dehydration, the sludge is drained under the action of self-weight extrusionand evaporation until the moisture content of the sludge is reduced to a certain degree, a curing agent is added into the sludge to be stirred and mixed, the curing agent is quick lime and fly ash, and the mixed sludge is stacked on the tedding site for tedding and maintaining until the engineering soil filling requirement is met. The method is fast in construction, the usage amount of the curingagent is reduced, the strength of the sludge is improved, the cured sludge can be used as engineering filling soil, and the cost is low.

Description

technical field [0001] The invention belongs to the field of sludge improvement, and in particular relates to a method for dehydrating and solidifying sludge. Background technique [0002] At present, there are two main disposal methods for sludge: one is direct natural air drying and discarding; the other is chemical consolidation and utilization. However, the former will pollute the surrounding environment, while the latter mainly uses curing agents such as cement and lime, which are not very effective when dealing with sludge with high water content or need to be mixed with a large amount of curing agent, so it is uneconomical. Contents of the invention [0003] The object of the present invention is to provide a method for dehydration and solidification of silt. The method is fast in construction, reduces the amount of curing agent used, improves the strength of silt, and the solidified silt can be used as engineering fill with low cost. [0004] The technical scheme ...

Claims

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Application Information

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IPC IPC(8): C02F11/13C02F11/143C02F11/145C02F11/00
CPCC02F11/13C02F11/145C02F11/143C02F11/008
Inventor 张乘胜陈舸范锐姜平朱颂阳
Owner CHINA FIRST METALLURGICAL GROUP