Dehydration method of huge-body high-water-content and low-permeability waste residue

A technology with high water content and low permeability, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve problems such as difficult to meet, occupy large space, and high treatment cost, and achieve The effect of shortening the total construction period of treatment, saving dehydration energy consumption and simple equipment

Inactive Publication Date: 2018-11-30
BEIJING ZHONGYAN DADI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processing cost of these technologies is high, and the general waste residue treatment is unacceptable
In addition, during the dehydration process of such a large amount of industrial waste, it usually takes a large area and takes a long time, and the treated waste also needs to occupy a large area of ​​temporary storage
These conditions are often difficult to meet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] There are two alkali slag mud ponds in a certain alkali slag storage yard. The height of the pond dam is 18m, the existing alkali slag mud is 15m, and the pool top area is 58 hectares. Alkali slag particle fineness: 50% 10 -7 cm / s; moisture content 326%.

[0055] Dehydration target: the moisture content of alkali slag is reduced to 50%.

[0056] Implementation steps and methods

[0057] 1. On the surface of the liquid waste mud in a waste mud pool A, artificially insert 5m deep plastic drainage boards vertically at intervals of 1m in row and column spacing, and connect the upper ports of each plastic drainage board with plastic drainage pipes with a diameter of 5cm. A connection; the drain pipe A connects to the drain main pipe leading to the outside;

[0058] 2. Lay a plastic film on the surface of the above system, and bury the edge of the film in the waste residue to form a closed system;

[0059] 3. Vacuum the closed system through the drain pipe A; make negativ...

Embodiment 2

[0077] There are two alkali slag mud ponds in a certain alkali slag storage yard. The height of the pond dam is 15m, the existing alkali slag mud is 13m, and the pool top area is 48 hectares. Alkali slag particle fineness: 50% 10 -6 cm / s; moisture content 267%.

[0078] Dehydration target: the moisture content of alkali slag is reduced to 50%.

[0079] Implementation steps and methods

[0080] 1. On the surface of the liquid waste mud in a waste mud pool A, artificially insert 5m deep plastic drainage boards vertically at intervals of 1m in row and column spacing, and connect the upper ports of each plastic drainage board with plastic drainage pipes with a diameter of 5cm. A connection; the drain pipe A connects to the drain main pipe leading to the outside;

[0081] 2. Lay a plastic film on the surface of the above system, and bury the edge of the film in the waste residue to form a closed system;

[0082] 3. Vacuum the closed system through the drain pipe A; make negativ...

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PUM

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Abstract

The invention discloses a dehydration method of huge-body high-water-content and low-permeability waste residue, and belongs to the field of utilization of industrial waste residue. The dehydration method is characterized by comprising the steps that a percolation type drain channel is planted into the fluid or plastic fluid waste residue, and an airtight thin film is adopted to cover the surfaceof the system to form an airtight system; the airtight system is vacuumized through a water drain pipe, the water in the waste residue is pumped through the percolation type drain channel, and the waste residue is dehydrated to be flexible plastic waste residue with the certain independence degree; on the basis, the percolation type drain channel is horizontally arranged to be drain channel sets,the waste residue and the drain channel sets are alternately stacked to reach the designed stacking height, the water in the waste residue is further extruded out through the percolation type drain channel under the driving of the gravity on the waste residue; and the dehydration of the waste residue is finally achieved. The dehydration method has the advantages that the huge-body waste residue can be dehydrated economically and effectively, ad the construction land occupation is less.

Description

technical field [0001] The invention relates to a method for dehydrating waste residue with large volume, high water content and low permeability. The invention belongs to the field of industrial waste treatment and utilization. Background technique [0002] Some industrial production processes have discharge permeability coefficients lower than 10 -4 cm / s, fine-grained, high-moisture waste sludge. Usually these waste residue muds are stored in the waste residue pool intercepted by the dam body. Due to the characteristics of low permeability and high salt content of the waste residue, although the water content has decreased after long-term deposition, it is still in a flow plastic state, and its water content can still be as high as 100-380%. For example: the soda slag discharged from the production of soda ash contains a large amount of chloride ions, sodium ions, hydroxide ions and other components. Particles with a particle size of less than 25 μm can account for up ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E03F1/00E03F3/04E03F5/14E02D3/10
CPCE02D3/10E03F1/00E03F3/04E03F5/14
Inventor 刘兴华张兴杨宝森
Owner BEIJING ZHONGYAN DADI TECH CO LTD
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