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Pretreatment method of liquid hazardous waste

A dangerous waste and pretreatment technology, which is applied in the direction of combustion method, filtration treatment, water/sewage treatment, etc., can solve the problems of investment secondary pollution, difficult site selection, long start-up and stop time of incinerators, etc., to achieve flexible system and reduce The effect of production costs

Inactive Publication Date: 2019-09-03
WUHAN YONGQING ENVIRONMENTAL PROTECTION TECH ENG
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The start-up and shutdown time of the incinerator is relatively long, the fuel consumption during the start-up process is large, and the start-up cost is high. Investment and secondary pollution and other issues

Method used

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Embodiment Construction

[0024] The present invention will be further described below in combination with specific embodiments.

[0025] The present invention proposes a liquid hazardous waste pretreatment method, the specific steps are:

[0026] A1: Receiving: Classify according to the concentration of organic matter in the waste liquid. The concentration of organic matter greater than 2000mg / L is high-concentration organic waste liquid, and the concentration of organic matter in waste liquid is not higher than 2000mg / L is low-concentration organic waste liquid;

[0027] A2: Impurity removal: The low-concentration organic waste liquid in the A1 waste liquid whose concentration of organic matter is not higher than 2000mg / L is removed for impurity removal. After the impurity removal, it can be stored for a long time. The filter box is filtered, and the filtered low-concentration organic waste liquid is sent to the liquid storage tank by the pneumatic diaphragm pump for storage;

[0028] A3: Storage: T...

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Abstract

The invention discloses a pretreatment method of liquid hazardous waste, the method comprises the following steps: A1, receiving: classifying is performed according to organic matter concentrations inwaste liquids, a waste liquid with the organic matter concentration more than 2000 mg / L is a high-concentration organic waste liquid, and a waste liquid with the organic matter concentration not morethan 2000 mg / L is a low-concentration organic waste liquid; A2, impurity removal; A3, storage: a liquid storage tank is completely sealed and immersed into groundwater to avoid direct sunlight; A4, disposal in a furnace, the high-concentration organic waste liquid in the A 1 has certain danger, after being collected on site, the high-concentration organic waste liquid is stored for no more than 12 hours, after oxidation treatment, the high-concentration organic waste liquid is directly mixed with pulverized coal and sent to a boiler burner for disposal; the low-concentration organic waste liquid in the liquid storage tank in the A2 is mixed with pulverized coal after atomization treatment, and then sent to the boiler burner for disposal. The pretreatment method is one of various treatmentmethods for treating the hazardous waste and municipal solid waste, has high cost performance, can realize reduction, hazard-free treatment and recycling.

Description

technical field [0001] The invention relates to the technical field of liquid hazardous waste treatment, in particular to a liquid hazardous waste pretreatment method. Background technique [0002] Incineration is one of the mainstream methods for centralized disposal of hazardous waste, and the core equipment is a hazardous waste incinerator. Incineration treatment of hazardous waste and municipal solid waste is the best way to achieve reduction, harmlessness and resource utilization among many treatment methods. However, when liquid hazardous materials are incinerated, they often cause explosions in the incinerator due to their high organic content, resulting in paralysis of equipment and even greater harm to the personal safety of workers. [0003] Incineration is one of the mainstream methods for centralized disposal of hazardous waste, and the core equipment is the hazardous waste incinerator. Incineration treatment of hazardous waste and municipal solid waste is the ...

Claims

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Application Information

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IPC IPC(8): C02F9/08F23G7/00C02F101/30
CPCC02F1/001C02F1/32C02F1/66C02F1/72C02F1/725C02F9/00C02F2101/30F23G7/008F23G2204/101F23G2209/101
Inventor 韦伟杰梁新亚张晟一陈星
Owner WUHAN YONGQING ENVIRONMENTAL PROTECTION TECH ENG
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