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Resource processing method and device for preparing industrial salt from high-concentration and high-salt chemical wastewater

A technology for chemical wastewater and high-salt wastewater is applied in the field of resource treatment of industrial salt extracted from high-salt and high-concentration chemical wastewater.

Inactive Publication Date: 2018-02-02
昌邑市瑞海生物科技有限公司
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Problems solved by technology

[0008] The technical problem to be solved in the present invention is to address the characteristics of high concentration and high salt chemical wastewater treatment with high pollutant concentration, complex components, and high salt that cannot be biochemically treated. A combination of processes, removing or destroying organic matter in wastewater, recovering inorganic salts and refining them into industrial salts, and finally realizing the resource utilization of high-concentration and high-salt wastewater The resource treatment method and device for preparing industrial salt from high-concentration and high-salt chemical wastewater

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  • Resource processing method and device for preparing industrial salt from high-concentration and high-salt chemical wastewater

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Embodiment 1

[0026] Embodiment 1, a kind of high-concentration high-salt chemical industry waste water produces the resource treatment method of industrial salt, comprises the following steps as follows:

[0027] 1. Homogenization step: For each strand of high-concentration and high-salt wastewater in the chemical production process, first place it in a high-salt water buffer tank for homogenization;

[0028] 2. Neutralization step: transfer the high-concentration and high-salt wastewater to the neutralization tank in batches and use hydrochloric acid (lye) to adjust the pH to 4~5;

[0029] 3. Three-phase catalytic oxidation step: After the neutralization step, the high-concentration and high-salt wastewater continuously enters the catalytic oxidation tower, and the surface active catalyst is loaded in the catalytic oxidation tower. The organic matter, oxygen and oxidant molecules in the final high-concentration and high-salt wastewater are oxidized and decomposed after adsorption, strong ...

Embodiment 2

[0036] Example 2, a resource treatment device for preparing industrial salt from high-concentration and high-salt chemical wastewater, including a high-salt water buffer tank, a neutralization tank connected to the high-salt water buffer tank, a catalytic oxidation tower connected to the neutralization tank, and catalytic oxidation The tower has a material inlet and a material outlet. The bottom of the catalytic oxidation tower is provided with an air inlet, and the top of the catalytic oxidation tower is provided with a liquid inlet. The liquid outlet of the neutralization tank is connected to the catalytic oxidation tower with a material inlet. The material outlet of the tower is connected to a flocculation sedimentation tank, and the flocculation sedimentation tank is connected to an intermediate buffer tank through a filter device. The effect evaporator is connected with the I effect separator, the II effect evaporator is connected with the II effect separator, the II effec...

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Abstract

The invention discloses a resource processing method and device for preparing an industrial salt from high-concentration and high-salt chemical wastewater. The resource processing methodcomprises thefollowing steps ofa homogenization step, a neutralization step, a three-phase catalytic oxidation step, a flocculation and sedimentation step, a double-effect evaporation and concentration step and acentrifugal filtration step. The resource processing method and device adopt the above scheme to remove or destroy organic substances in the waste water, recover an inorganic salt tobe refinedinto theindustrial salt and finally achieve the resource utilization of the high-concentration and high-salt waste water.

Description

technical field [0001] The invention relates to the technical field of high-concentration and high-salt chemical wastewater treatment, in particular to a resource treatment method and device for extracting industrial salt from high-salt and high-concentration chemical wastewater. Background technique [0002] The treatment of high-salt and high-concentration chemical wastewater has always been a difficult point in the field of wastewater treatment technology. With the continuous deepening of environmental protection management, the economical and rational comprehensive treatment of high-salt and high-concentration wastewater needs to be solved urgently. High-salt and high-concentration chemical wastewater is difficult to biochemically treat. At present, the economically feasible treatment method is evaporation and crystallization to achieve zero discharge, but the waste salt generated in this way needs to be managed as solid waste, and the pollutants in the wastewater have no...

Claims

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Application Information

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IPC IPC(8): C02F9/10C01D3/06
CPCC01D3/06C02F1/001C02F1/04C02F1/38C02F1/52C02F1/66C02F1/722C02F1/725C02F9/00C02F2001/5218C02F2301/08
Inventor 李雷召丛日祥刘鑫胡俊卿
Owner 昌邑市瑞海生物科技有限公司
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