A tower type treatment equipment for polluted soil and waste residue

A technology for processing equipment and polluted soil, applied in the restoration of polluted soil, etc., can solve the problems that the waste residue cannot be reused, the pH value of the alkali residue waste liquid is high, and the growth of surrounding plants is affected, so as to improve the probability and treatment efficiency The effect of high height and short moving distance

Active Publication Date: 2021-03-16
BEIJING ZHONGYAN DADI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the alkali slag waste liquid discharged from the alkali plant contains harmful ion chloride ions, which will have a great impact on the surrounding area if it is discharged into the sea or underground. Moreover, the pH value of the alkali slag waste liquid is relatively high, and a certain amount of alkali slag stacking will seriously affect the surrounding area. plant growth
At present, the waste residue treatment process is not mature, and most of them are in the form of stacking; most of the treatment of polluted soil and waste residue in the existing technology is carried out by adding chemicals, but the effect of this treatment can only last for a few years, and it will be harmful after the agent expires. The ions will also seep out, which will pollute the environment again, and the waste residue cannot be reused

Method used

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  • A tower type treatment equipment for polluted soil and waste residue
  • A tower type treatment equipment for polluted soil and waste residue
  • A tower type treatment equipment for polluted soil and waste residue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Waste alkali slag discharged from the production process of the alkali plant, composition: dry matter: calcium sulfate 3%, calcium carbonate 64%, calcium chloride 6%, sodium chloride 4%, calcium hydroxide 10%, alumina 2%; particles Fineness: 50%-7 cm / s; pH value 10.9; moisture content 267%; it is planned to remove part of the salt and water as raw materials for making building materials.

[0067] Target value of each index: Chloride ion removal 90%.

[0068] Construction method:

[0069] (1) Introduce the flow plastic alkali slag into the reaction cylinder 6, and observe the pouring situation through the observation port 13.

[0070] (2) Conductive polymer tubes are used as electrodes, the corrosion-resistant electrode plate 6.3 is set in a cylindrical ring shape, and the outside of the corrosion-resistant electrode rod 14 is wrapped by a PVC tube. There are holes on the PVC tube for liquid to pass through, and evenly distributed on the PVC tube wall .

[0071] (3) C...

Embodiment 2

[0076] Waste red mud produced by aluminum factories, composition: dry matter: calcium oxide 40.88%, aluminum oxide 7.48%, silicon oxide 25.36%, iron oxide 1.29%, sodium oxide 3.19%, potassium oxide 1.04%, titanium oxide 1.72%, oxide Magnesium 2.12%; fluorine content 3000.3mg / kg, of which soluble fluorine content 425.1mg / kg; pH=10.9. The moisture content is 136%. Particle fineness: 25%-5 cm / s. It is intended to be used as a raw material for the preparation of building materials after removing pollutants.

[0077] Target values ​​of various indicators: 90% removal rate of soluble fluorine, pH value less than 8.

[0078] Construction method:

[0079] (1) The flow plastic red mud discharged from the production line is introduced into the reaction cylinder 6, the reaction cylinder 6 is made of steel, the interior is pasted with insulating material and corrosion-resistant electrode plate 6.3, and the middle part of the reaction cylinder 6 is provided with a corrosion-resistant el...

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Abstract

The invention relates to the technical field of treatment of contaminated soil and waste residues, in particular to tower-type treatment equipment of contaminated soil and waste residues. A corrosion-resistant electrode bar and a corrosion-resistant electrode board are arranged on a middle portion of a reaction cylinder and the inner side of a side wall respectively, and an electrokinetic technology can be used for completely removing harmful ions in to-be-treated materials; the furthest displacement distance of the harmful ions on the corrosion-resistant electrode board is equal to the radiusof the reaction cylinder, the displacement distance of the harmful ions is short, treatment time of the contaminated soil or the waste residues is short, and the treatment speed is high; by means ofopen holes in an insulating board on the inner side, pollutants which gather on the corrosion-resistant electrode board can be brought out, and an electrochemistry environment of the materials can betuned; a cavity is located in the reaction cylinder, so that transportation is convenient; by means of the insulating board, electrification of the reaction cylinder can be prevented, and a material of the side wall of the reaction cylinder is not limited; by arranging a feeding pipeline, a stirring unit and a discharging pipeline, the to-be-treated materials are automatically added and automatically discharged, and the material replacing speed is high; and the materials can also be stirred by the stirring unit, so that reaction time is shortened.

Description

technical field [0001] The present application relates to the technical field of contaminated soil and waste residue treatment, in particular to a tower type processing equipment for contaminated soil and waste residue. Background technique [0002] With the development of industrialization in the country, production and life have been affected by the development of industrialization, especially the environment. Industrial waste gas, waste residue, and waste water seriously affect people's lives, especially the problem of polluted soil seriously affects the local environment, which has attracted the attention of many scholars. Usually, the waste slag discharged from the industry belongs to the second type of solid pollutants, because the waste slag contains harmful ions, which affects the resource utilization of the waste slag, and local governments are trying to find a solution. [0003] Usually different waste residues contain different pollutants, which mainly include: o...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B09C1/08
Inventor宋伟杰李建平王伟涛朱庆凯侯恩品
OwnerBEIJING ZHONGYAN DADI TECH CO LTD