Unlock instant, AI-driven research and patent intelligence for your innovation.

Zero-emission-oriented high-salt high-fluorine mine water purification system and process

A technology for purification process and mine water, applied in mining wastewater treatment, water pollutants, chemical instruments and methods, etc., can solve the problem that mine water process is difficult to achieve high-efficiency water purification and zero discharge at the same time

Active Publication Date: 2022-04-15
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the purpose of the present invention is to provide a high-salt and high-fluorine mine water purification system and process oriented towards zero discharge, so as to solve the problem that the mine water process in the prior art is difficult to realize high-efficiency water purification and zero waste at the same time. Emissions Technical Issues

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Zero-emission-oriented high-salt high-fluorine mine water purification system and process
  • Zero-emission-oriented high-salt high-fluorine mine water purification system and process
  • Zero-emission-oriented high-salt high-fluorine mine water purification system and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] This embodiment provides a zero-emission-oriented high-salt and high-fluorine mine water purification system, such as figure 1 Shown, comprise water inlet pipeline 1, the water outlet end of water inlet pipeline 1 is connected with the first water inlet end of bipolar membrane device 2, and the lye outlet end of bipolar membrane device 2 is connected with the inlet of filtrate-mixture preparation device 3 The alkali liquid end is connected, the acid liquid end of the bipolar membrane device 2 is connected with the acid liquid end of the filtrate-mixture preparation device 3; the alkali liquid end of the filtrate-mixture preparation device 3 is connected with the liquid inlet end of the high-density pool 4 Connected, the outlet mixture end of filtrate-mixture preparation device 3 is communicated with the inlet mixture end of membrane coagulation reactor 5;

[0065] The water inlet end of the high density pool 4 is connected with the water inlet adjustment pool 6, the wat...

Embodiment 2

[0072] This embodiment provides a zero-discharge-oriented high-salt and high-fluorine mine water purification process, which adopts the zero-discharge-oriented high-salt and high-fluorine mine water purification system in Example 1; the process includes the following steps:

[0073] Step 1, preparing an acidic mixture and an alkaline filtrate;

[0074] Step 1.1, prepare mixed acid solution and lye;

[0075] Pure water is passed into the bipolar membrane device 2 through the water inlet pipe 1, and NaCl, Na 2 SO 4 and NaOH are added to the bipolar membrane device 2, NaCl and Na 2 SO 4 Dissolve in pure water as the raw material solution, and dissolve NaOH in pure water as the electrode chamber solution. The operating pressure used in the preparation is 40V, the operating current is 3A, and the operating time is 58min; NaCl and NaCl 2 SO 4 The concentration of NaOH is 0.2mol / L, the concentration of NaOH is 0.07mol / L, NaCl, Na 2 SO 4 The molar ratio to NaOH is 20:20:7.

[...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a zero-emission-oriented high-salt and high-fluorine mine water purification system and a zero-emission-oriented high-salt and high-fluorine mine water purification process. According to the process, fly ash, a mixed acid solution and an alkali solution are used as raw materials to prepare an acidic mixture and an alkaline filtrate, the acidic mixture is used as a fluorine removal agent, and the alkaline filtrate is used as a flocculating agent; the high-salt and high-fluorine mine water purification system for zero emission can be used for preparing mixed purified effluent. According to the zero-emission-oriented high-salt high-fluorine mine water purification system and the zero-emission-oriented high-salt high-fluorine mine water purification process, a bipolar membrane device is adopted for preparing mixed acid liquor and alkali liquor, a filtrate-mixture preparation device is adopted for preparing an acid mixture and alkaline filtrate, the alkaline filtrate is added into a high-density pool, the acid mixture is added into a membrane coagulation reactor, and the membrane coagulation reactor is used for performing membrane coagulation on the mixed acid liquor and the alkali liquor; according to the present invention, the high-salt fluorine-containing mine water is subjected to decarbonization and deionization treatment to finally prepare the mixed purified effluent, and the mixed purified effluent can meet the surface water class III standard, such that the zero emission is achieved while the high-salt fluorine-containing mine water is efficiently purified.

Description

technical field [0001] The invention belongs to the technical field of water quality and water purification, and relates to a water purification process and system, in particular to a zero-emission-oriented high-salt and high-fluorine mine water purification system and process. Background technique [0002] High-salt fluorine-containing mine water is common in my country's coal mining areas. The salinity of mine water in some mining areas is between 1000mg / L-2000mg / L, and the fluoride content is between 1.0mg / L-8mg / L. Regarding the further strengthening of coal mine water The notice of resource development environmental impact assessment management requires that the salt content should not exceed 1000mg / L, which meets or exceeds the surface water environmental quality stipulated in the environmental function zoning of the receiving water body. The fluoride is reduced to below 1mg / L, and the salinity is reduced to 1000mg / L by the zero-emission process. [0003] The defluoridat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/10C02F101/14C02F103/10C02F1/44
Inventor 张全王皓杨建王晓东葛光荣刘基胡骁张溪彧
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP