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Method and device for treating high-salinity mine water

A technology with high salinity and mine water, applied in water/sewage treatment, chemical instruments and methods, heating water/sewage treatment, etc., can solve the problem of no good treatment methods for mine water, and reduce subsequent steam consumption Or the effects of electricity consumption, reduction of water resource fees, and reduction of environmental pressure

Pending Publication Date: 2020-09-08
JIANGSU JIUWU HITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to solve the problem in the prior art that there is no better treatment method for mine water with high salinity

Method used

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  • Method and device for treating high-salinity mine water
  • Method and device for treating high-salinity mine water
  • Method and device for treating high-salinity mine water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A certain coal mine adopts the treatment device and method of the present invention, and the mine water is first adjusted after the buffer flow rate and water quality of the pool.

[0087] Adjust the pool water to be sent to the superconducting magnetic separator, and add 400mg / L Fe through the doser 3 o 4 , 40mg / L PAC for coagulation treatment, and then flocculation treatment, adding 4mg / L PAM; after flocculation treatment, the flocs were separated and removed by superconducting magnetic separator, and the effluent was filtered through a ceramic membrane with a pore size of 50nm, and the filtration pressure was 0.3 MPa, cross-flow velocity is 2m / s, to further clarify mine water.

[0088] The ceramic membrane filtrate enters a reverse osmosis membrane system to separate the salt and water in the mine water. The operating pressure is 1.0Mpa and the water recovery rate is 60%.

[0089] Sodium carbonate and sodium hydroxide are added to the concentrated water of a revers...

Embodiment 2

[0095] A certain coal mine adopts the treatment device and method of the present invention, and the mine water is first adjusted after the buffer flow rate and water quality of the pool.

[0096] Adjust the pool water to be sent to the superconducting magnetic separator, and add 450mg / L Fe through the doser 3 o 4, 60mg / L PAC for coagulation treatment, and then flocculation treatment, adding 6mg / L PAM; after flocculation treatment, the flocs were separated and removed by superconducting magnetic separator, and the effluent was filtered through a ceramic membrane with a pore size of 50nm, and the filtration pressure was 0.2 MPa, cross-flow velocity is 3m / s, to further clarify mine water.

[0097] The ceramic membrane filtrate enters a nanofiltration membrane system to separate the salt and water in the mine water. The operating pressure is 1.5Mpa and the water recovery rate is 70%.

[0098] Sodium carbonate and sodium hydroxide are added to the concentrated water of a reverse ...

Embodiment 3

[0104] The difference from Example 2 is that no nucleating agent is added in the coagulation process.

[0105] A certain coal mine adopts the treatment device and method of the present invention, and the mine water is first adjusted after the buffer flow rate and water quality of the pool.

[0106] Adjust the pool water to the superconducting magnetic separator, add 60mg / L PAC through the doser for coagulation treatment, then perform flocculation treatment, add 6mg / L PAM; The pressure is 0.2MPa, and the cross-flow velocity is 3m / s, which further clarifies the mine water.

[0107] The ceramic membrane filtrate enters a nanofiltration membrane system to separate the salt and water in the mine water, the operating pressure is 2Mpa, and the water recovery rate is 80%.

[0108] Sodium carbonate and sodium hydroxide are added to the concentrated water of a nanofiltration membrane system to soften it, and the concentration of sodium carbonate added is 8g / L. Add sodium hydroxide to ...

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Abstract

The invention provides a device and a method for treating high-salinity mine water. The treatment device and method comprise an adjusting tank, a pretreatment system, an ultrafiltration system, a first-section membrane system, a first-section concentrated water reaction tank, a tubular membrane system, a second-section membrane system, an ion exchanger, a third-section salt extraction system and an evaporative crystallization salt separation system which are connected in sequence. The first-section concentrated water reaction tank and the second-section concentrated water reaction tank are communicated with a dispenser. The device is reasonable in structure, small in occupied area, flexible in operation and low in cost, and the water production index of the mine water can be adjusted according to local or national standards and owner requirements, so that up-to-standard discharge or reuse of the mine water is realized.

Description

technical field [0001] The invention relates to a device and method for treating high-salinity mine water, belonging to the field of water treatment. Background technique [0002] If high salinity mine water is discharged directly without treatment, it will bring certain harm to the ecological environment. The main manifestations are the increase of salinity in river water, the rise of shallow groundwater, soil salinization, the weakening of saline-alkali-resistant forest species, and the reduction of crop production. At the same time, it also affects the industrial production in the area, because many industrial productions cannot use high-salt water. If they use it, they must first reduce the salt content in the water, which will increase the cost. If the groundwater is used instead, it will cause a large amount of groundwater exploitation, resulting in a shortage of groundwater resources, which will seriously affect the economic development of the area. [0003] Wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/5236C02F1/56C02F1/5245C02F1/441C02F1/44C02F2001/425C02F1/04C02F1/22
Inventor 赵士明杨文银葛乃星周明张泉张荟钦彭文博范克银党建兵
Owner JIANGSU JIUWU HITECH