Treatment method and system for reutilization and resource utilization of high-mineralization mine water

A technology with high salinity and treatment methods, applied in the field of water treatment, can solve problems affecting regional economic development, shortage of groundwater resources, and affecting industrial production, and achieve simple and easy process operation and maintenance, low energy consumption, and convenient operation Effect

Pending Publication Date: 2019-01-18
华电水务工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, it also affects the industrial production in the area, because many industrial productions cannot use high-salt water, and if it is used, the salt content in the water must be reduced first, which will increase the cost
If groundwater is used instead of using it, it will cause a large amount of groundwater to be exploited, resulting in a shortage of groundwater resources, which will seriously affect regional economic development.

Method used

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  • Treatment method and system for reutilization and resource utilization of high-mineralization mine water
  • Treatment method and system for reutilization and resource utilization of high-mineralization mine water
  • Treatment method and system for reutilization and resource utilization of high-mineralization mine water

Examples

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Effect test

Embodiment 1

[0094] A treatment method for high salinity mine water reuse and resource utilization, comprising the following steps:

[0095] (1) Pretreatment and desalination section: the raw water first enters the high-efficiency clarification tank and is softened by adding chemicals, and then the effluent enters the ultrafiltration device to remove suspended solids, colloidal particles, bacteria, viruses, etc. and organic matter in the water, and then the effluent enters the first The reverse osmosis device performs desalination, the first reverse osmosis device discharges the water and reuses it, and the concentrated brine continues to be processed;

[0096] (2) Concentrated brine concentration section: the concentrated brine obtained in step (1) is discharged into a high-density sedimentation tank and chemical agents are added to remove hardness and silicon, and then the effluent is softened again by ion exchange resin, and the effluent is decarbonized and then enters nanofiltration Th...

Embodiment 2

[0099] (1) Pretreatment and desalination section: the raw water first enters the high-efficiency clarification tank and is softened by adding sodium hydroxide and soda ash, and then the effluent enters the ultrafiltration device to remove suspended solids, colloidal particles, bacteria, viruses, etc. and organic matter in the water, and then effluent Enter the first reverse osmosis device for desalination, the first reverse osmosis device produces water and reuses after discharge, and the concentrated brine continues to be treated; the ultrafiltration device is a submerged ultrafiltration device, and the ultrafiltration membrane used is a pore size of 0.02 microns. Hollow fiber membrane;

[0100] (2) Concentrated brine concentration section: the concentrated brine obtained in step (1) is discharged into a high-density sedimentation tank and chemical agents are added to remove hardness and silicon, and then the effluent is softened again by ion exchange resin, and the effluent i...

Embodiment 3

[0103] A treatment method for high salinity mine water reuse and resource utilization, comprising the following steps:

[0104] (1) Pretreatment and desalination section: the raw water first enters the high-efficiency clarification tank and is softened by adding chemicals, and then the effluent enters the ultrafiltration device to remove suspended solids, colloidal particles, bacteria, viruses, etc. and organic matter in the water, and then the effluent enters the first The reverse osmosis device performs desalination, the first reverse osmosis device discharges the water and reuses it, and the concentrated brine continues to be processed;

[0105] (2) Concentrated brine concentration section: the concentrated brine obtained in step (1) is discharged into a high-density sedimentation tank and added with magnesium chloride, sodium hydroxide and soda ash to remove hardness and silicon, then the effluent is softened again by weak acid cation exchange resin, and the effluent is dew...

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Abstract

The invention provides a treatment method and system for reutilization and resource utilization of high-mineralization mine water. The treatment method comprises the following steps: firstly, pre-treating to effectively reduce the rigidity and form calcium carbonate sediment; recycling the calcium carbonate and carrying out first-time desalting; secondly, concentrating and carrying out second-timedesalting; finally, carrying out evaporation and crystallization treatment to really realize zero emission of wastewater. The treatment technology and system, provided by the invention adopt a reasonable flow design; the system is operated stably, the treatment efficiency of the wastewater is high, energy sources are saved, and the treatment cost is effectively reduced.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a treatment method and system for high salinity mine water reuse and resource utilization. Background technique [0002] my country is a water-poor country, and its water resource share is only 1 / 4 of the world's average, ranking 121st in the world, and is listed as one of the 12 water-poor countries in the world. Coal mine water is an important water resource. It is reported that in the process of coal production in my country, about 2 to 3 billion cubic meters are discharged every year. 3 Mine water, which accounts for about 60% in the northern region, and increases year by year with the increase of coal mining depth. Now my country's coal mine water utilization rate is less than 20%. Most coal mine water in the western plateau, Huanghuai plain and coastal areas of East China has high salinity. The direct discharge of such mine water not only wastes precious water. r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F5/00
CPCC02F9/00C02F1/04C02F1/42C02F1/441C02F1/442C02F1/444C02F1/66C02F5/00C02F2301/08
Inventor 刘进李宏秀秦树篷李文杰王建华许强舒泽萍王瑞范文亮李虎民崔德圣潘孝宇吴溪张研庞晓辰刘强
Owner 华电水务工程有限公司
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