CN114804501A - System and method for concentrating, recovering and treating dissolved mineral liquid in carbon emission reduction and carbon neutralization technologies - Google Patents
System and method for concentrating, recovering and treating dissolved mineral liquid in carbon emission reduction and carbon neutralization technologies Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
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Abstract
The invention discloses a system and a method for concentrating, recovering and treating a dissolved mineral liquid in a carbon emission reduction and carbon neutralization technology. The system comprises a high-efficiency silicon removal unit, a suspended matter removal unit and a separation and concentration unit. The method is used for recovering useful components and removing useless components in the mineral solution in the fields of carbon emission reduction and carbon neutralization. The invention provides a first technical process route for classified recovery of the dissolved mineral liquid for the technical field of carbon emission reduction and carbon neutralization, provides effective guarantee for water saving and emission reduction, mineral liquid consumption reduction and raw material consumption reduction of the CCUS technology, and lays a foundation for better realizing the targets of carbon peak reaching, carbon emission reduction and carbon neutralization.
Description
Technical Field
The invention relates to the field of carbon emission reduction and carbon neutralization, in particular to a system and a method for concentrating and recovering a dissolved mineral solution in a carbon emission reduction and carbon neutralization technology.
Background
The technology of carbon emission reduction and carbon neutralization is various, the technology of the invention corresponds to a carbonization carbon fixation technology, and the final product is calcium carbonate. The main process of the carbonization carbon fixation technology comprises the following steps: calcium ore (solid waste such as carbide slag, steel slag and the like) is subjected to the working procedures of ore dissolution, carbonization, product dehydration, packaging and the like. The technology of the invention mainly treats a large amount of flushing wastewater (containing a large amount of dissolved mineral liquid) for recovering crude calcium carbonate and product calcium carbonate.
The mineral solution is used for dissolving calcium ore in carbon emission reduction and carbon neutralization technologies, and the main components of the mineral solution can be one or more of strong acid and weak base salts such as ammonium nitrate, ammonium chloride and ammonium sulfate and weak acids such as acetic acid, and the mineral solution also contains calcium chloride which flows back after mineralization reaction.
The existing carbonization carbon fixation technology is applied in a Chinese and partial small-scale application state, and the mineralized liquid in the flushing wastewater is not recycled basically and is directly discharged to a factory or park sewage treatment plant for treatment, so that valuable dissolved mineral liquid in the wastewater is not recycled. Meanwhile, the part of high-salinity wastewater increases the treatment scale and the treatment difficulty of a sewage treatment plant.
The carbon emission reduction and carbon neutralization technology is a technology for utilizing carbon in CCUS (carbon capture, utilization and sequestration), and realizes carbon emission reduction and carbon neutralization. The carbon neutralization is a technology for reducing carbon dioxide emission, and energy consumption, common engineering consumption, medicament consumption and raw material consumption can be converted into carbon emission, so the requirement of the advancement of the carbon neutralization technology on the indexes is very strict.
The dissolved mineral liquid in the carbon neutralization technology is mainly discharged in the washing process of crude products and products or the raw material liquid is partially discharged, the partial dissolved mineral liquid needs to be concentrated and recycled, if the partial dissolved mineral liquid is not recycled, the partial dissolved mineral liquid is directly discharged, because the dissolved mineral liquid is high-salt-content wastewater, the direct discharge can cause pollution to the environment, and when the dissolved mineral liquid is discharged to a sewage treatment plant, the load impact can be caused to the sewage treatment plant, so that the normal operation of the sewage treatment plant is influenced. Meanwhile, the operation energy consumption of the sewage treatment plant is increased, and the process of carbon emission is also realized. Therefore, the invention makes important contribution to energy conservation and environmental protection in the fields of carbon emission reduction and carbon neutralization.
The invention provides a first set of technical process route for classified recovery of the dissolved mineral liquid for the technical fields of carbon emission reduction and carbon neutralization. The method provides effective guarantee for water conservation and emission reduction of the CCUS technology, reduction of the consumption of the mineral solution and raw materials, and lays a foundation for better realizing the goals of carbon peak reaching, carbon emission reduction and carbon neutralization.
Disclosure of Invention
The invention aims to provide a system and a method for concentrating and recycling dissolved mineral liquid in carbon emission reduction and carbon neutralization technologies, so that water, medicaments and raw materials in the dissolved mineral liquid can be effectively concentrated and recycled.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a system for concentrating, recovering and treating a dissolved mineral solution in carbon emission reduction and carbon neutralization technologies, which comprises: the device comprises a high-efficiency silicon removal unit, a suspended matter removal unit and a separation and concentration unit;
the high-efficiency silicon removal unit comprises a reaction zone and a precipitation zone; the reaction zone comprises a dissolved mineral liquid input port and a dosing device; the bottom of the settling zone comprises a solids outlet and the upper part comprises a liquid phase outlet;
the suspended matter removing unit comprises coarse filtering equipment and ultrafiltration equipment; the liquid phase outlet of the settling zone is connected with the inlet of the coarse filtration equipment, and the outlet of the coarse filtration equipment is connected with the inlet of the ultrafiltration equipment;
the separation and concentration unit is electrodialysis equipment; the outlet of the ultrafiltration device is connected with the inlet of the electrodialysis device; the electrodialysis device adopts a monovalent anion selective membrane. The monovalent anion selective membrane enables monovalent anions and other cations to simultaneously pass through the membrane to enter a concentration side for concentration and recovery, and anions with more than two valences cannot permeate the membrane to play a role in separating divalent anions.
The system according to the present invention, preferably, the dosing device comprises a sodium metaaluminate solution dosing assembly, a polyferric sulfate (PFS) solution dosing assembly, and a Polyacrylamide (PAM) solution dosing assembly; the flocculation precipitation is carried out by using a compound medicament (sodium metaaluminate + PFS + PAM) and adding the compound medicament, the PFS solution and the Polyacrylamide (PAM) solution respectively through a sodium metaaluminate solution dosing assembly, a polyferric sulfate (PFS) solution dosing assembly and a PAM solution dosing assembly.
According to the system of the invention, preferably, the high-efficiency silicon removal unit is a high-efficiency silicon removal reactor selected from one of various coagulation sedimentation reactors such as a high-efficiency sedimentation tank, a high-density tank, an inclined plate sedimentation tank and electric flocculation.
According to the system of the invention, preferably, the coarse filtration equipment is selected from one or a combination of more than two of a V-shaped filter, a multi-medium filter, a quartz sand filter and an activated carbon filter.
According to the system of the present invention, preferably, the ultrafiltration apparatus is selected from an ultrafiltration membrane apparatus or a microfiltration membrane apparatus.
The coarse filtration equipment and the ultrafiltration equipment are mature processes in the water treatment industry, the operation process is reasonable, and meanwhile, the system has the advantages of low energy consumption, thorough removal of suspended matters and impurities, high operation automation degree, low investment, stable operation effect and the like.
On the other hand, the invention provides a method for concentrating and recovering the dissolved mineral liquid in the carbon emission reduction and carbon neutralization technologies, which is carried out by the system and comprises the following steps:
conveying the solution to be treated to the high-efficiency silicon removal unit, and simultaneously adding a high-efficiency silicon removal agent through the dosing equipment; the mineral solution and the high-efficiency silicon removal agent react in a reaction zone, wherein the silicon dioxide generates a complex which is separated out in a suspended matter mode, and the mineral solution enters the precipitation zone so that the complex formed by the silicon dioxide is precipitated, separated and removed;
the desiliconized solution is lifted to the coarse filtering equipment by a pump to carry out coarse filtering on suspended matters and impurities, and the coarse filtered water enters the ultrafiltration equipment; removing suspended matters and other solid impurities from the solution ore produced by the high-efficiency desiliconization unit through a coarse filtration and fine filtration system, so as to prevent the subsequent separation and concentration unit from being polluted and blocked;
and sending the solution after the two-stage filtration to the separation and concentration unit, and concentrating the solution in the separation and concentration unit.
According to the method of the present invention, preferably, the separation and concentration unit is an electrodialysis apparatus employing a monovalent anion selective membrane;
concentrated water output by the concentration side of the electrodialysis equipment is divided into two paths, one path is used as concentrated mineral solution for recycling, and the other path is used as high-salt water for discharge treatment; and the produced water output by the water producing side of the electrodialysis equipment is recycled as reuse water.
According to the method of the invention, preferably, the concentrated solution is recycled to a carbon emission reduction and carbon neutralization system; the reuse water is reused as washing water of crude calcium carbonate and product calcium carbonate.
According to the method of the invention, preferably, the turbidity of the effluent after the two-stage filtration is reduced to be within 2 NTU.
According to the method of the invention, preferably, the composition of the solution to be treated comprises: 60-500 mg/L of silicon dioxide, 20000-50000 mg/L of salt, 12000-30000 mg/L of effective components (strong acid and weak base salts such as ammonium nitrate, ammonium chloride and ammonium sulfate and weak acids such as acetic acid) of a mineral-dissolving solution, and 4000-11000 mg/L of substances (strong acid and calcium salts such as calcium nitrate, calcium chloride and calcium sulfate) after mineral-dissolving reaction.
According to the method of the invention, preferably, the concentrated water contains 170000-200000 mg/L of salt, the content of active ingredients (strong acid and weak base salt such as ammonium nitrate and ammonium chloride and weak acid such as acetic acid) in the mineral-dissolving solution is 80000-120000 mg/L, and the content of substances (strong acid and calcium salt such as calcium nitrate and calcium chloride) after mineral-dissolving reaction is 8000-20000 mg/L.
According to the method of the invention, preferably, the high-efficiency silicon removal agent comprises: sodium metaaluminate aqueous solution with the concentration of 20-40%, Polymeric Ferric Sulfate (PFS) aqueous solution with the concentration of 10% and Polyacrylamide (PAM) aqueous solution with the concentration of 1-3 per mill.
According to the method, preferably, in the high-efficiency silicon removal agent, the mass ratio of sodium metaaluminate to Polymeric Ferric Sulfate (PFS) to Polyacrylamide (PAM) is (40-60): 20: 1.
according to the method, preferably, after the silicon unit is removed efficiently, the content of silicon dioxide is reduced to 10-500 mg/L.
In the method for concentrating, recovering and treating the dissolved mineral liquid, the dissolved mineral liquid is continuously added into the high-efficiency silicon removal reactor through the water pump, and simultaneously, the high-efficiency silicon removal medicament (compound medicament) is added. The dissolved mineral liquid and the high-efficiency silicon removal agent react in a reaction zone in the high-efficiency silicon removal reactor, and after the complex generated by the silicon dioxide is separated out in the form of suspended matters, the dissolved mineral liquid enters a precipitation zone in the high-efficiency silicon removal reactor, so that the complex formed by the silicon dioxide is precipitated, separated and removed. The effluent treated by the high-efficiency silicon removal unit is lifted to a coarse filtration device of the suspended matter removal unit by a pump for coarse filtration of suspended matters and impurities, the coarse filtration effluent enters an ultrafiltration device, and the effluent turbidity is reduced to 2NTU after two-stage filtration and then is conveyed to a separation concentration unit by a pump. Concentrating the dissolved mineral liquid in a separation and concentration unit electrodialysis device, so that the concentrated dissolved mineral liquid (electrodialysis concentrated water) is recycled to a carbon emission reduction and carbon neutralization system; reusing the reuse water (electrodialysis product water) into a carbon emission reduction and carbon neutralization system for recycling; in the whole treatment process, a very small amount of silicon dioxide solid waste (common solid waste) is discharged and is subjected to conventional landfill, and meanwhile, as the dissolved mineral liquid contains other impurities (such as potassium ions, magnesium ions and the like), a small amount of high-salt water (concentrated dissolved mineral liquid, namely electrodialysis concentrated water) is discharged to a sewage treatment plant, and the discharge amount is lower than 15%. According to the invention, the amount of produced water, medicament and raw materials in the carbon emission reduction and carbon neutralization technologies is effectively reduced by concentrating and recovering the dissolved mineral liquid. Lays a foundation for the engineering implementation of carbon emission reduction and carbon neutralization technologies.
The beneficial effects of the invention include:
1) the invention effectively reduces the consumption of public works, medicaments and raw materials in the application of carbon emission reduction and carbon neutralization technologies, and really realizes carbon emission reduction and carbon neutralization;
2) the method effectively reduces the emission of high-salt-content wastewater of carbon emission reduction and carbon neutralization technologies, and makes important contribution to energy conservation and environmental protection of projects.
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FIG. 1 is a schematic view of a system and process for concentrating, recovering and treating a mineral solution according to a preferred embodiment of the present invention.
Description of reference numerals:
100-high-efficiency silicon removal unit, 101-reaction zone, 102-precipitation zone, 200-suspended matter removal unit, 201-coarse filtration equipment, 202-ultrafiltration equipment and 300-separation concentration unit.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below in connection with preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
The present invention provides a preferred embodiment, as shown in fig. 1, a concentrate recovery processing system for a mineral solution, comprising: a high efficiency silicon removal unit 100, a suspended matter removal unit 200, and a separation concentration unit 300.
Specifically, the high-efficiency silicon removal unit 100 is a high-efficiency silicon removal reactor, and comprises a reaction zone 101 and a precipitation zone 102; the reaction zone 101 comprises a dissolved mineral liquid input port and a dosing device; the medicine adding equipment specifically comprises a sodium metaaluminate solution medicine adding assembly, a polyferric sulfate (PFS) solution medicine adding assembly and a Polyacrylamide (PAM) solution medicine adding assembly; the flocculation precipitation is carried out by using a compound medicament (sodium metaaluminate + PFS + PAM) and adding the compound medicament, the PFS solution and the Polyacrylamide (PAM) solution respectively through a sodium metaaluminate solution dosing assembly, a polyferric sulfate (PFS) solution dosing assembly and a PAM solution dosing assembly.
The bottom of the settling zone 102 includes a solids outlet for removing precipitated silica solids waste and the upper portion includes a liquid phase outlet.
The suspended matter removal unit 200 includes a coarse filtration apparatus 201 and an ultrafiltration apparatus 202; a liquid phase outlet of the settling zone 102 is connected with an inlet of the coarse filtration equipment 201, and the effluent of the settling zone is lifted to the coarse filtration equipment 201; the outlet of the coarse filtration device 201 is connected with the inlet of the ultrafiltration device 202, and two-stage filtration is arranged.
The separation and concentration unit 300 is an electrodialysis device; the outlet of the ultrafiltration device 202 is connected to the inlet of the electrodialysis device; the electrodialysis device adopts a monovalent anion selective membrane. The monovalent anion selective membrane enables monovalent anions and other cations to simultaneously pass through the membrane to enter a concentration side for concentration and recovery, and anions with more than two valences cannot permeate the membrane to play a role in separating divalent anions.
The high-efficiency desiliconization reactor is selected from various coagulation sedimentation reactors such as a high-efficiency sedimentation tank, a high-density tank, an inclined plate sedimentation tank, electric flocculation and the like. The coarse filtering device 201 is selected from one or a combination of more than two of a V-shaped filter, a multi-media filter, a quartz sand filter, an activated carbon filter and the like. The ultrafiltration apparatus 202 is selected from an ultrafiltration membrane apparatus or a microfiltration membrane apparatus.
As shown in figure 1, in the method for concentrating and recovering the dissolved mineral liquid by using the system, the dissolved mineral liquid to be treated is continuously added into a high-efficiency silicon removal reactor (a high-efficiency silicon removal unit 100) through a water pump, and simultaneously, a high-efficiency silicon removal medicament (a compound medicament) is added. The dissolved mineral liquid and the high-efficiency silicon removal agent react in a reaction zone 101 in the high-efficiency silicon removal reactor, after the silicon dioxide generates a complex compound which is separated out in a suspended matter mode, the dissolved mineral liquid enters a precipitation zone 102 in the high-efficiency silicon removal reactor, so that the complex compound formed by the silicon dioxide can be precipitated, separated and removed (the content of the silicon dioxide is reduced to 10-500 mg/L after the silicon dioxide is solid waste in figure 1 and passes through a high-efficiency silicon removal unit). The effluent treated by the high-efficiency silicon removal unit 100 is lifted to the coarse filtration equipment 201 of the suspended matter removal unit 200 by a pump for coarse filtration of suspended matters and impurities, the coarse filtered effluent enters the ultrafiltration equipment 202, and the effluent turbidity after two-stage filtration is reduced to 2NTU and then is pumped to the separation concentration unit 300. Concentrating the dissolved mineral liquid in a separation and concentration unit electrodialysis device, so that the concentrated dissolved mineral liquid (electrodialysis concentrated water) is recycled to a carbon emission reduction and carbon neutralization system; and reusing the reuse water (electrodialysis product water) into a carbon emission reduction and carbon neutralization system for recycling.
The components of the solution to be treated comprise: 60-500 mg/L of silicon dioxide, 20000-50000 mg/L of salt, 12000-30000 mg/L of effective components (strong acid and weak base salts such as ammonium nitrate, ammonium chloride and ammonium sulfate and weak acids such as acetic acid) of a mineral-dissolving solution, and 4000-11000 mg/L of substances (strong acid and calcium salts such as calcium nitrate, calcium chloride and calcium sulfate) after mineral-dissolving reaction.
The concentrated mineral solution (electrodialysis concentrated water) has the salt content of 170000-200000 mg/L, the effective component content of the mineral solution (strong acid and weak base salt such as ammonium nitrate and ammonium chloride and weak acid such as acetic acid) of 80000-120000 mg/L, and the content of substances (strong acid and calcium salt such as calcium nitrate and calcium chloride) after mineral dissolving reaction is 8000-20000 mg/L.
Specifically, the high-efficiency silicon removal agent comprises: sodium metaaluminate aqueous solution with the concentration of 20-40%, Polymeric Ferric Sulfate (PFS) aqueous solution with the concentration of 10% and Polyacrylamide (PAM) aqueous solution with the concentration of 1-3 per mill. Wherein the solid mass ratio of sodium metaaluminate, Polymeric Ferric Sulfate (PFS) and Polyacrylamide (PAM) is (40-60): 20: 1.
the following applies using the system and flow of FIG. 1
Application example 1
The application example specifically comprises the following processes:
1) the solution to be treated enters the treatment system shown in the figure 1 through a pump: the amount of the treated mineral solution was 3m 3 The concentration of silicon dioxide is 60mg/L, the salt content is 25000mg/L, the content of an active ingredient (ammonium chloride) in a mineral solution is 14000mg/L, and the content of a reaction substance (calcium chloride) after mineral dissolution is 5000 mg/L.
2) The dissolved mineral liquid is continuously added into a high-efficiency silicon removal reactor through a water pump, and simultaneously, a high-efficiency silicon removal medicament is added (a compound medicament, sodium metaaluminate aqueous solution is added for 0.92L/h (40 percent concentration), polymeric ferric sulfate aqueous solution is added for 1.5L/h (10 percent concentration), and polyacrylamide aqueous solution is added for 7.5L/h (1 per thousand concentration)). The mineral solution and the high-efficiency silicon removal agent react in the reaction zone to generate the silicon dioxide and generate the complex which is separated out in the form of suspended matters, and the mineral solution enters the precipitation zone to precipitate, separate and remove the complex formed by the silicon dioxide. The index of silicon dioxide after the treatment of the high-efficiency silicon removal unit is 10 mg/L.
3) The desiliconized solution is lifted to coarse filtering equipment of a suspended matter removing unit by a pump to perform coarse filtering of suspended matters and impurities, the coarse filtered effluent enters ultrafiltration equipment, and the effluent turbidity index after two-stage filtering is 0.2 NTU.
4) After the suspended matters are removed, the dissolved ore liquid is sent to a separation and concentration unit through a pump; the concentrate is concentrated in an electrodialysis device.
The indexes after the treatment by the separation and concentration unit are as follows: the divalent anion is not concentrated, the salt content is 185000mg/L, the effective component (ammonium chloride) content of the mineral solution is 89400mg/L, and the reactant (calcium chloride) content after mineral dissolution is 12000 mg/L.
Water inflow: 3m 3 H, reuse water amount: 2.53m 3 H, recycling the amount of the concentrated solution: 0.37m 3 Volume of discharged concentrated solution (discharged high-salt water): 0.1m 3 Per h, general solid waste of silica: 0.3 kg/h.
In the application example, the recovery rate of the dissolved mineral liquid is 96.7 percent, the discharge rate of high-salinity wastewater is 3.3 percent, the general solid waste is discharged at 0.3kg/h, and the effective components in the dissolved mineral liquid are recovered to the maximum extent.
Wherein, the recovery rate of the dissolved mineral liquid is (the amount of the reclaimed concentrated dissolved mineral liquid plus the amount of reclaimed water)/water inflow, and the discharge rate of the high-salinity wastewater is the discharged dissolved mineral liquid/water inflow.
Application example 2
The application example specifically comprises the following processes:
1) the solution to be treated enters the treatment system shown in the figure 1 through a pump: the amount of the treated mineral solution was 3m 3 The concentration of silicon dioxide is 100mg/L, the salt content is 45000mg/L, the content of an active ingredient (ammonium chloride) in a mineral solution is 26600mg/L, and the content of a reaction substance (calcium chloride) after mineral dissolution is 9500 mg/L.
2) The mineral solution is continuously added into a high-efficiency silicon removal reactor through a water pump, and simultaneously, high-efficiency silicon removal agents (a compound agent, sodium metaaluminate is added for 1.1L/h (40 percent concentration), polyferric sulfate is added for 1.8L/h (10 percent concentration), and polyacrylamide is added for 9L/h (1 per thousand concentration)) are added. The mineral solution and the high-efficiency silicon removal agent react in the reaction zone to generate the silicon dioxide and generate the complex which is separated out in the form of suspended matters, and the mineral solution enters the precipitation zone to precipitate, separate and remove the complex formed by the silicon dioxide. The index of silicon dioxide after the treatment of the high-efficiency silicon removal unit is 12 mg/L.
3) The desiliconized solution is lifted to coarse filtering equipment of a suspended matter removing unit by a pump to perform coarse filtering of suspended matters and impurities, the coarse filtered effluent enters ultrafiltration equipment, and the effluent turbidity index after two-stage filtering is 0.2 NTU.
4) After the suspended matters are removed, the dissolved ore liquid is sent to a separation and concentration unit through a pump; the concentrate is concentrated in an electrodialysis device.
The indexes after the treatment by the separation and concentration unit are as follows: the divalent anion is not concentrated, the salt content is 190000mg/L, the effective component (ammonium chloride) content of the mineral solution is 90400mg/L, and the reactant (calcium chloride) content after mineral dissolution is 12500 mg/L.
Water inflow: 3m 3 H, reuse water amount: 2.36m 3 H, recycling the amount of the concentrated solution: 0.39m 3 Volume of discharged concentrated solution (discharged high-salt water): 0.25m 3 Per h, general solid waste of silica: 0.4 kg/h.
In the application example, the recovery rate of the dissolved mineral liquid is 91%, the discharge rate of high-salinity wastewater is lower than 8.5%, the general solid waste is discharged at 0.4kg/h, and the effective components in the dissolved mineral liquid are recovered to the maximum extent.
It should be understood that the above-described embodiments of the present invention are examples for clearly illustrating the invention, and are not to be construed as limiting the embodiments of the present invention, and it will be obvious to those skilled in the art that various changes and modifications can be made on the basis of the above description, and it is not intended to exhaust all embodiments, and obvious changes and modifications can be made on the basis of the technical solutions of the present invention.
Claims (10)
1. The utility model provides a concentrated recovery processing system of solution mineral liquid among carbon emission reduction, carbon neutralization technology which characterized in that, this concentrated recovery processing system of solution mineral liquid includes: the device comprises a high-efficiency silicon removal unit, a suspended matter removal unit and a separation and concentration unit;
the high-efficiency silicon removal unit comprises a reaction zone and a precipitation zone; the reaction zone comprises a dissolved mineral liquid input port and a dosing device; the bottom of the settling zone comprises a solids outlet and the upper part comprises a liquid phase outlet;
the suspended matter removing unit comprises coarse filtering equipment and ultrafiltration equipment; the liquid phase outlet of the settling zone is connected with the inlet of the coarse filtration equipment, and the outlet of the coarse filtration equipment is connected with the inlet of the ultrafiltration equipment;
the separation and concentration unit is electrodialysis equipment; the outlet of the ultrafiltration device is connected with the inlet of the electrodialysis device; the electrodialysis device adopts a monovalent anion selective membrane.
2. The concentrate recovery processing system of claim 1, wherein the dosing equipment includes a sodium metaaluminate solution dosing assembly, a polyferric sulfate (PFS) solution dosing assembly, and a Polyacrylamide (PAM) solution dosing assembly.
3. The concentrated recovery processing system of solution mineral liquid according to claim 1, characterized in that the high-efficiency desiliconization unit is a high-efficiency desiliconization reactor selected from one of high-efficiency sedimentation tank, high-density tank, inclined plate sedimentation tank, and electrocoagulation-coagulation sedimentation reactor.
4. The concentrate recovery processing system of claim 1, wherein the coarse filtration device is selected from one or a combination of two or more of a V-bank filter, a multi-media filter, a quartz sand filter and an activated carbon filter.
5. The concentrate recovery processing system of claim 1, wherein the ultrafiltration device is selected from an ultrafiltration membrane device or a microfiltration membrane device.
6. A method for concentrating, recovering and treating dissolved mineral liquid in carbon emission reduction and carbon neutralization technologies, which is carried out by the system for concentrating, recovering and treating the dissolved mineral liquid according to any one of claims 1 to 5, and comprises the following steps:
conveying the solution to be treated to the high-efficiency silicon removal unit, and simultaneously adding a high-efficiency silicon removal agent through the dosing equipment; the mineral solution and the high-efficiency silicon removal agent react in a reaction zone, wherein the silicon dioxide generates a complex which is separated out in a suspended matter mode, and the mineral solution enters the precipitation zone so that the complex formed by the silicon dioxide is precipitated, separated and removed;
the desiliconized solution is lifted to the coarse filtering equipment by a pump to carry out coarse filtering on suspended matters and impurities, and the coarse filtered water enters the ultrafiltration equipment;
and sending the solution after the two-stage filtration to the separation and concentration unit, and concentrating the solution in the separation and concentration unit.
7. The concentrate recovery processing method of mineral solution according to claim 6, wherein the separation and concentration unit is an electrodialysis device using a monovalent anion selective membrane;
concentrated water output by the concentration side of the electrodialysis equipment is divided into two paths, one path is used as concentrated mineral solution for recycling, and the other path is used as high-salt water for discharge treatment; and the produced water output by the water producing side of the electrodialysis equipment is recycled as reuse water.
8. The process of claim 7, wherein the concentrated pregnant solution is recycled to a carbon abatement, carbon neutralization system; the reuse water is reused as washing water of crude calcium carbonate and product calcium carbonate.
9. The method according to claim 6, wherein the turbidity of the effluent after the two-stage filtration is reduced to within 2 NTU.
10. The process according to claim 7, wherein the composition of the mineral water solution to be treated comprises: 60-500 mg/L of silicon dioxide, 20000-50000 mg/L of salt, 12000-30000 mg/L of effective component content of mineral dissolving liquid and 4000-11000 mg/L of substance content after mineral dissolving reaction;
preferably, the salt content of the concentrated water is 170000-200000 mg/L, the effective component content of the mineral dissolving liquid is 80000-120000 mg/L, and the substance content after mineral dissolving reaction is 8000-20000 mg/L;
preferably, the high-efficiency silicon removal agent comprises: sodium metaaluminate aqueous solution with the concentration of 20-40%, polymeric ferric sulfate aqueous solution with the concentration of 10% and polyacrylamide aqueous solution with the concentration of 1-3 per mill; more preferably, in the high-efficiency silicon removal medicament, the mass ratio of sodium metaaluminate, polymeric ferric sulfate and polyacrylamide is (40-60): 20: 1;
preferably, after the silicon unit is removed efficiently, the content of silicon dioxide is reduced to 10-500 mg/L.
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| CN202210605310.0A CN114804501A (en) | 2022-05-31 | 2022-05-31 | System and method for concentrating, recovering and treating dissolved mineral liquid in carbon emission reduction and carbon neutralization technologies |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1691915A2 (en) * | 2003-12-07 | 2006-08-23 | Ben-Gurion University Of The Negev Research And Development Authority | Method and system for increasing recovery and preventing precipitation fouling in pressure-driven membrane processes |
| JP2011125812A (en) * | 2009-12-18 | 2011-06-30 | Kobelco Eco-Solutions Co Ltd | Method for treating wastewater containing fluorine and silicon, method for producing calcium fluoride, and apparatus for treating fluorine-containing wastewater |
| CN107265735A (en) * | 2017-08-11 | 2017-10-20 | 山东招金膜天股份有限公司 | A kind of zero-emission recovery process of high salt silicon-containing wastewater |
| CN107840511A (en) * | 2017-11-10 | 2018-03-27 | 深圳能源资源综合开发有限公司 | Coal chemical industry method for treating strong brine and system |
| CN109264920A (en) * | 2018-12-03 | 2019-01-25 | 中南大学 | A kind of processing method of beneficiation wastewater zero-emission |
| CN112062249A (en) * | 2020-09-22 | 2020-12-11 | 神美科技有限公司 | Silicon removal agent, preparation method and application thereof |
-
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1691915A2 (en) * | 2003-12-07 | 2006-08-23 | Ben-Gurion University Of The Negev Research And Development Authority | Method and system for increasing recovery and preventing precipitation fouling in pressure-driven membrane processes |
| JP2011125812A (en) * | 2009-12-18 | 2011-06-30 | Kobelco Eco-Solutions Co Ltd | Method for treating wastewater containing fluorine and silicon, method for producing calcium fluoride, and apparatus for treating fluorine-containing wastewater |
| CN107265735A (en) * | 2017-08-11 | 2017-10-20 | 山东招金膜天股份有限公司 | A kind of zero-emission recovery process of high salt silicon-containing wastewater |
| CN107840511A (en) * | 2017-11-10 | 2018-03-27 | 深圳能源资源综合开发有限公司 | Coal chemical industry method for treating strong brine and system |
| CN109264920A (en) * | 2018-12-03 | 2019-01-25 | 中南大学 | A kind of processing method of beneficiation wastewater zero-emission |
| CN112062249A (en) * | 2020-09-22 | 2020-12-11 | 神美科技有限公司 | Silicon removal agent, preparation method and application thereof |
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