Stabilizing treatment method for beryllium-containing waste residues

A disposal method and waste residue technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of high treatment cost and large investment, and achieve the effect of avoiding investment

Active Publication Date: 2021-03-09
扬州杰嘉工业固废处置有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above two treatment processes require large-scale high-temperature equipment such as melting furnaces or cement kilns, which require large investment and high processing costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The beryllium-containing waste residue is hazardous waste from a biotechnology company, and its color is gray-black. It was leached according to HJ / T 299-2007 "Solid Waste - Sulfuric Acid and Nitric Acid Method for Leaching and Toxicity", and the concentration of beryllium in the leachate was determined to be 5.15 mg / L. The beryllium concentration limit of 0.2 mg / L in the Standards for Hazardous Waste Landfill Pollution Control exceeds the limit by 25 times.

[0023] The stable solidification of beryllium-containing waste slag is completed according to the following steps:

[0024] (1) Take 1kg of beryllium-containing waste slag and 300ml of water and put them into the wet milling processor, and wet mill for 30 minutes to obtain a beryllium-containing waste slag slurry with a solid particle size of less than 100 mesh.

[0025] (2) Take 200g of beryllium-containing waste slag slurry and put it into an acid and alkali resistant container, add 4g of polyferric sulfate for ...

Embodiment 2

[0029] The beryllium-containing waste residue is a hazardous waste of a chemical technology company, the color is gray, and the leaching is carried out in accordance with HJ / T 299-2007 "Solid Waste - Sulfuric and Nitric Acid Method for Leaching and Toxic Leaching", and the concentration of beryllium in the leachate is determined to be 6.42 mg / L. The beryllium concentration limit of 0.2mg / L in the Hazardous Waste Landfill Pollution Control Standard exceeded the limit by 32 times.

[0030] The stable solidification of beryllium-containing waste slag is completed according to the following steps:

[0031] (1) Take 1 kg of beryllium-containing waste slag and 320ml of water and put them into the wet grinding processor, and carry out wet grinding for 35 minutes to obtain a beryllium-containing waste slag slurry with a solid particle size of less than 100 mesh.

[0032] (2) Take 200g of the beryllium-containing waste residue slurry in step (1) and put it into an acid and alkali resis...

Embodiment 3

[0036] The beryllium-containing waste residue is hazardous waste from an electroplating factory, and its color is earthy yellow. It is leached in accordance with HJ / T 299-2007 "Solid Waste - Leaching and Toxic Leaching Method Sulfuric Acid Nitric Acid Method". The beryllium concentration requirement in the Hazardous Waste Landfill Pollution Control Standard is less than 0.2mg / L, exceeding the standard by 75 times.

[0037] The stable solidification of beryllium-containing waste slag is completed according to the following steps:

[0038] (1) Take 1 kg of beryllium-containing waste slag and 340 ml of water and put them into the wet grinding processor, and carry out wet grinding treatment for 40 minutes to obtain beryllium-containing waste slag slurry with a particle size below 100 mesh.

[0039] (2) Take 200g of the beryllium-containing waste slag slurry in step (1) and put it into an acid and alkali resistant container, add 2g of aluminum chloride and 3g of magnesium chloride ...

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Abstract

The invention provides a stabilizing treatment method for beryllium-containing waste residues and belongs to the technical field of environment-friendly treatment of harmful substances. The method comprises the steps of wet grinding, diversified synthetic reaction, curing molding and the like. The leaching concentration of beryllium in the treated cured material is less than 0.2 mg/L and is lowerthan the control limit value of "Hazardous Waste Pollution Landfill Control Standard-GB18598-2019", and the cured material can be directly put in storage for safe landfilling. According to the method,the beryllium-containing waste residues are safely disposed, and the method has positive significance in ecological environment protection.

Description

technical field [0001] The invention belongs to the technical field of environmentally friendly treatment of harmful substances, and in particular relates to a method for stabilizing and solidifying waste slag containing beryllium. Background technique [0002] Beryllium-containing waste slag is coded as HW20 in the hazardous waste catalog issued by the state, and it comes from basic chemical raw material manufacturing and other industries. Both beryllium and its salts are highly toxic, and the clinical manifestations of acute berylliuc mpoisoning are chemical bronchitis and pneumonia. Chronic beryllium poisoning causes a systemic disease dominated by pulmonary granulomas, also known as berylliosis. Workers in the production and processing of beryllium and its compounds (such as beryllium smelting, beryllium alloy manufacturing, etc.) can be occupationally exposed to beryllium dust or smoke, causing beryllium poisoning. Therefore, the safe disposal of beryllium-containing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34C04B18/04
CPCC04B28/344C04B18/0463C04B2111/00784C04B2201/50C04B22/149C04B7/00C04B18/08C04B18/141C04B22/12Y02W30/91
Inventor 黄河涛赵阿波吴彤沈悦刘欣岳喜龙
Owner 扬州杰嘉工业固废处置有限公司
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