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Harmless recycling treatment system for waste salts

A treatment system and recycling technology, applied in the field of waste salt harmless recycling treatment system, can solve the problems of difficulty in adopting waste salt incineration technology by small and medium-sized enterprises, high investment and energy consumption of incinerators, and achieve short construction period and low operating cost. , to deal with the effect of simple system flow

Active Publication Date: 2019-05-03
ANHUI HUAXING CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coupled with the high investment and energy consumption of the incinerator itself, it is difficult for small and medium-sized enterprises to adopt waste salt incineration technology

Method used

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  • Harmless recycling treatment system for waste salts
  • Harmless recycling treatment system for waste salts
  • Harmless recycling treatment system for waste salts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A waste salt harmless resource treatment system, such as Figure 1-5 As shown, it includes a primary oxidation refining system 1, a secondary two-stage oxidation refining system 2, an activated carbon tower adsorption system 3, a macroporous resin tower adsorption system 4, and a brine discharge system 5.

[0057] (1) Primary oxidation refining system 1

[0058] When waste salt is treated, it is first necessary to use the primary oxidation refining system 1 to perform primary oxidation and refining treatment on the waste salt solution. The primary oxidation refining system includes a waste salt treatment kettle 101 , a hydrogen peroxide storage tank 103 , a water storage tank 104 , a pH adjustment device 105 , a centrifugal filter 106 and a filtrate storage tank 107 .

[0059] The hydrogen peroxide storage tank 103, the water storage tank 104, and the pH adjustment device 105 are all connected to the waste salt treatment kettle through pipelines, wherein the pH adjustm...

Embodiment 2

[0098] A harmless resource treatment system for waste salt, comprising a primary oxidation refining system 1 and a secondary two-stage oxidation refining system 2, the composition of the primary oxidation refining system 1 and the secondary two-stage oxidation refining system 2 is the same as in Embodiment 1.

[0099] After the waste salt is successively treated by the primary oxidation refining system 1 and the secondary two-stage oxidation refining system 2, the waste brine obtained can be used as salt for ion membrane caustic soda or as industrial salt after further separation or purification.

[0100] The waste brine treated by the secondary two-stage oxidation refining system 2 can be discharged through the conventional brine discharge system, or can be discharged through the brine discharge system 5 in the present invention as in Example 1.

Embodiment 3

[0102] A harmless resource treatment system for waste salt, comprising a primary oxidation refining system 1, a secondary two-stage oxidation refining system 2, an activated carbon tower adsorption system 3, a primary oxidation refining system 1, a secondary two-stage oxidation refining system 2, and an activated carbon tower The composition of adsorption system 3 is the same as that of embodiment 1.

[0103] After the waste salt is successively treated by the primary oxidation refining system 1, the secondary two-stage oxidation refining system 2, and the activated carbon tower adsorption system 3, the waste salt water obtained can be used as salt for ion membrane caustic soda or as industrial salt after further separation or purification.

[0104] The waste brine treated by the activated carbon tower adsorption system 3 can be discharged through a conventional brine discharge system, or can be discharged through the brine discharge system 5 of the present invention in the sam...

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Abstract

The invention provides a harmless recycling treatment system for waste salts, and relates to the technical field of waste-salt treatment. The harmless recycling treatment system for the waste salts comprises a primary oxidation refining system and a secondary two-stage oxidation refining system; the primary oxidation refining system includes a waste-salt treatment tank, a hydrogen peroxide storagetank, a water storage tank, a pH adjusting device, and a centrifugal filter, and the secondary two-stage oxidation refining system includes a hydrochloric acid conveying device, a hydrogen peroxide conveying pipeline, a first-stage oxidation tower salt liquid conveying device, a sodium hydroxide conveying device and a sodium hypochlorite conveying device; and the treatment system can further comprise an activated carbon column adsorption system, a macroporous resin tower adsorption system or a brine discharge system. The treatment system provided by the invention can be used for harmless recycling treatment of the various waste salts or high-salt wastewater, and the treated salts can be used as general solid waste to be disposed or as a resource for ionic membrane caustic soda salts or can be further separated or purified as industrial salts; and the method has a simple process, convenient operation and management, and low costs.

Description

technical field [0001] The invention relates to the technical field of waste salt treatment, in particular to a waste salt harmless resource treatment system. Background technique [0002] The by-product salt of chemical products, especially the production of pesticides, is produced in a huge amount across the country, and most pesticide companies choose to temporarily stockpile. According to the 2016 edition of the "National Hazardous Waste List", most of the waste salt generated by these industries is hazardous solid waste. The treatment and resource utilization of waste salt is a national problem, and has become a common problem that the pesticide industry urgently needs to solve. [0003] At present, the most commonly used disposal methods for this kind of waste salt are: (1) entrust a unit with hazardous waste disposal qualifications to conduct harmless disposal, and the disposal cost is 6,000-10,000 yuan / ton. However, due to the small disposal capacity of hazardous s...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/10
Inventor 颜泽彬刘元声蒋伟群任文祥金奎许峰纪东升尹仕兵
Owner ANHUI HUAXING CHEM IND CO LTD
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