CN114014462A - Low-cost treatment method for recycling metal ions in acidic mine water - Google Patents
Low-cost treatment method for recycling metal ions in acidic mine water Download PDFInfo
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Abstract
The invention discloses a low-cost treatment method for recycling acidic mine water metal ions, which comprises the following steps: step 1, purification of acid mine water: the method comprises the steps of extracting the acidic mine water into a purifying device for purifying, and selectively removing a large amount of metal ions such as Al, Fe, Mg, Mn and the like contained in the acidic mine water in a step-by-step successive precipitation manner in the purifying process to obtain precipitates which are high in purity and can be recycled. According to the invention, different metal precipitates can be selectively removed to obtain precipitates with high purity and capable of being recycled, the quantity of solid waste formed in the treatment process of the acid mine water is greatly reduced, even the operation in a solid-waste-free mode is realized, the required cost for solid waste reprocessing and the total operation cost of the acid mine water purification process can be greatly reduced, and the whole purification requirement can be selectively recycled according to the water quality condition and the value of precipitation resources.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a low-cost treatment method for recycling acidic mine water metal ions.
Background
Coal resources in China are rich, underground mining is mainly used, a mined-out area is formed after coal seam mining, the mined-out area which is stopped to be mined and the ground surface movement deformation decline period is finished becomes an old mined-out area, the old mined-out area becomes a space for gathering underground water, sulfide minerals in the coal seam generate a series of physical and chemical actions under the action of oxidation environment and microorganisms, substances after reaction are dissolved in water and gathered in the old mined-out area, accumulated water is slowly circulated, the characteristics of acid mine water are presented, a plurality of spring areas in the north of China have water and coal symbiosis, and the high openness of a karst system, the ecological environment of the karst area water is very weak, once the acid mine water seeps or overflows the ground surface in the mined-out area and then supplies the karst water through a river channel, the karst water is polluted, the problem is left after coal mine pit closure, and the acid mine water is continuously supplied with various ways of water sources along with more and more old kilns stopping mining and closing, the water level is gradually raised and overflows from suitable places in mining areas to become a long-term pollution source of surface water and soil, in some mining areas, the overflowing acid mine water finally flows into a river channel and is supplied with karst water through a downstream carbonate rock seepage section, so that the serious threat is formed to domestic and production water sources of local residents, the acid mine water is one of the outstanding environmental problems of many closed-pit coal mining areas in China, and has the characteristics of high pollution degree, wide influence range, long duration and the like.
The traditional acid mine water tail end treatment thought comprises combined processes of alkali neutralization, aeration oxidation, wetland treatment and the like, the precipitation amount is large, the comprehensive treatment cost is high, the occurrence conditions of geology in different regions are different, the types and the concentrations of metal ions in acid mine water are also greatly different, different treatment processes have certain applicability, a neutralization method generally adopts CaO as a neutralizing agent, the defects of large precipitation amount and easy scaling exist, the existing treatment method cannot achieve the purpose of selectively separating and removing metal precipitates in mine water, and recyclable precipitates cannot be obtained.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems occurring in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the low-cost treatment method for recycling the metal ions in the acidic mine water comprises the following steps:
step 1, purification of acid mine water: extracting the acid mine water into a purifying device for purifying, selectively removing a large amount of metal ions such as Al, Fe, Mg, Mn and the like contained in the acid mine water in a stepwise successive precipitation mode in the purifying process to obtain precipitates with high purity and capable of being recycled, greatly reducing the amount of solid waste formed in the treatment process of the acid mine water by recycling the precipitates of a large amount of metal cations contained in the acid mine water, even realizing the mode operation without the solid waste, and greatly reducing the required cost of solid waste recycling and the total operation cost of the acid mine water purifying process;
step 2, conventionally recovering metal precipitates in the acid mine water: in the step 1, in the synchronous purification, alkali metal oxide or alkaline strong base weak acid salt and compound thereof which are required properly are added through an instrument to carry out step-by-step treatment on the acidic mine water, or solution substances of the products, so that metal ions in the water are generated and precipitated and removed, and the precipitate which is high in purity and can be recycled as resources can be obtained, wherein the alkali, alkali metal oxide or alkaline strong base weak acid salt and compound thereof are specifically one or more of sodium hydroxide, potassium hydroxide, magnesium hydroxide, and oxidized minerals and strong base weak acid salts corresponding to sodium, potassium and magnesium;
and 3, independently recovering aluminum precipitates: in the step 1, in the synchronous purification, the pH value of the mine water is adjusted to 4.5-6.8 through an acid-base adjusting process, the reaction is carried out for a certain time, aluminum precipitates in the water are separated out and naturally precipitated, the aluminum precipitates obtained at the bottom are separated out after standing for a certain period, and the mine water with aluminum ions removed is obtained for later use;
and 4, separately recovering iron precipitate: in the step 1, in the synchronous purification (after the step 3), regulating the pH value of the mine water to 6.2-8.8 by an acid-base regulation process again, reacting for a certain time, separating out iron precipitate in the water, naturally precipitating, standing the obtained iron precipitate at the bottom of the treatment equipment for a certain period, and separating out to obtain the mine water without aluminum ions and iron ions for later use;
and 5, independently recovering magnesium (manganese) precipitate: in the synchronous purification of the step 1 (after the step 4), regulating the pH value of the mine water to 8.3-10.5 by an acid-base regulation process again, reacting for a certain time, separating out magnesium (manganese) precipitate in the water, naturally precipitating, and purifying to obtain the mine water without aluminum ions, iron ions and magnesium (manganese) ions for later use;
and 6, deep reaction filtering tank treatment: in the step 1 of synchronous purification, the mine water from which metal ions such as aluminum, iron, magnesium (manganese) and the like are removed after the treatment in the steps is conveyed to a deep reaction filtering tank for further purification treatment, so that the quantity of solid waste generated in the treatment process of the acid mine water is greatly reduced, even the mode operation without solid waste is realized, and the water quality reaches the preset treatment target.
Preferably, the acidic mine water refers to water seeped from a mine hole after the coal mine or the pyrite are sealed, or acidic water generated by long-time accumulation of surface water of the coal mine or the pyrite in open pit mining, and the index of the acidic mine water is as follows, the pH value is less than 6, and Fe2+、Fe3+、Mn2+、SO4 2-The ion concentration is higher.
Preferably, the acid mine water further comprises Ca, Mg, Al and other ions.
Preferably, the acid mine water is different in occurrence of geological minerals of the mountain, and is likely to contain a certain amount of harmful heavy metal ions such As Cu, Pb, As and the like.
Preferably, the whole purification requirement can be selectively used for recycling all or part of metal precipitates according to the water quality condition and the value of precipitation resources.
Preferably, the deep reaction filtering tank arranged at the end in the step 6 can further remove ammonia nitrogen ions and residual metal ions in the water by using any combination of a denitrification process including a denitrification filtering tank and conventional demanganization and denitrification processes such as manganese sand and zeolite, so that the effluent can be discharged after reaching the standard.
Preferably, the specific operation steps in step 3 are as follows:
firstly removing aluminum ions, slowly and uniformly adding a certain amount of alkali, alkaline metal oxide or alkaline strong base and weak acid salt and a compound thereof or a solution of the product into the acidic mine water according to the pH value of the acidic mine water and the concentration data of the aluminum ions in the water, stirring for a certain time, raising the pH value of the acidic mine water to 4.5-6.8, generating white aluminum precipitate through hydrolysis reaction of the aluminum ions, standing to obtain the aluminum precipitate, and allowing the supernatant to enter the next process;
the obtained photo and XRF analysis result of the aluminum precipitate after filter pressing and drying refer to Table 2, and the main component of the aluminum precipitate is basic aluminum sulfate according to the XRF analysis result of the aluminum precipitate.
Preferably, the specific operation steps in the step 4 are as follows:
according to the pH value of the acid mine water and the concentration data of iron ions in the water, slowly and uniformly adding a certain amount of alkali, alkali metal oxide or alkaline strong base and weak acid salt and a compound thereof or a solution of the product into the acid mine water, increasing the pH value of the water to 6.5-8.5, stirring for a certain time, rapidly generating ferric hydroxide and ferrous hydroxide precipitate by the iron ions, standing to obtain an iron precipitate, and allowing the supernatant to enter the next process;
the obtained iron precipitate is subjected to filter pressing and drying, and the picture and XRF analysis result refer to Table 3, and the XRF analysis result shows that the iron precipitate mainly contains ferric hydroxide and can be used as a raw material of an iron oxide red product after being dried.
Preferably, the specific operation steps in the step 5 are as follows:
according to the pH value of the acid mine water and the concentration data of magnesium (manganese) ions in the water, slowly and uniformly adding a certain amount of alkali, alkali metal oxide or alkaline strong base weak acid salt or compound or solution thereof into the acid mine water, increasing the pH value of the water to 8.3-10.5, stirring for a certain time, rapidly generating magnesium hydroxide (manganese hydroxide) precipitate by the magnesium (or manganese) ions, standing to obtain magnesium (manganese) precipitate, and allowing the supernatant to enter the next process;
considering the actual requirement of acid mine water treatment, magnesium ions are not a target treatment item and can be selectively removed or retained from the economic cost perspective, and manganese ions can be removed in other modes.
Preferably, after the metal ions are removed, the water enters a deep reaction filter, residual iron, manganese ions and ammonia nitrogen ions in the solution are filtered, after the filtration treatment of the deep reaction filter, the effluent meets the surface water environmental quality standard (GB3838-2002) and the coal industry pollutant discharge standard (GB20426-2006) except for the total nitrogen and ammonia nitrogen indexes, and the effluent detection indexes refer to Table 5.
Preferably, an aeration process can be selectively added in the metal ion removal process of a certain step in the whole water treatment process.
The invention has the technical effects and advantages that:
1. the treatment problem of the precipitate is not fully considered in the previous treatment thought of the acid mine water, the precipitate amount is large, the components of the precipitate are complex, and the comprehensive treatment cost of the acid mine water is greatly improved when the acid mine water is treated according to solid waste.
2. According to the invention, different metal precipitates can be selectively removed to obtain precipitates with high purity and capable of being recycled, the quantity of solid waste formed in the treatment process of the acid mine water is greatly reduced, even the operation in a solid-waste-free mode is realized, the required cost for solid waste reprocessing and the total operation cost of the acid mine water purification process can be greatly reduced, and the whole purification requirement can be selectively recycled according to the water quality condition and the value of precipitation resources.
Drawings
FIG. 1 is a schematic diagram of the precipitation of aluminum salt and the precipitation of iron salt according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The low-cost treatment method for recycling the metal ions in the acidic mine water comprises the following steps:
the method comprises the following steps:
step 1, purification of acid mine water: extracting the acid mine water into a purifying device for purifying, selectively removing a large amount of metal ions such as Al, Fe, Mg, Mn and the like contained in the acid mine water in a stepwise successive precipitation mode in the purifying process to obtain precipitates with high purity and capable of being recycled, greatly reducing the amount of solid waste formed in the treatment process of the acid mine water by recycling the precipitates of a large amount of metal cations contained in the acid mine water, even realizing the mode operation without the solid waste, and greatly reducing the required cost of solid waste recycling and the total operation cost of the acid mine water purifying process;
step 2, conventionally recovering metal precipitates in the acid mine water: in the step 1, in the synchronous purification, alkali metal oxide or alkaline strong base weak acid salt and compound thereof which are required properly are added through an instrument to carry out step-by-step treatment on the acidic mine water, or solution substances of the products, so that metal ions in the water are generated and precipitated and removed, and the precipitate which is high in purity and can be recycled as resources can be obtained, wherein the alkali, alkali metal oxide or alkaline strong base weak acid salt and compound thereof are specifically one or more of sodium hydroxide, potassium hydroxide, magnesium hydroxide, and oxidized minerals and strong base weak acid salts corresponding to sodium, potassium and magnesium;
and 3, independently recovering aluminum precipitates: in the step 1, in the synchronous purification, the pH value of the mine water is adjusted to 4.5-6.8 through an acid-base adjusting process, the reaction is carried out for a certain time, aluminum precipitates in the water are separated out and naturally precipitated, the aluminum precipitates obtained at the bottom are separated out after standing for a certain period, and the mine water with aluminum ions removed is obtained for later use;
and 4, separately recovering iron precipitate: in the step 1 of synchronous purification (after the step 3), the pH value of the mine water is adjusted to 6.2-8.8 through an acid-base adjusting process again, reaction is carried out for a certain time, iron precipitates in the water are separated out and naturally precipitated, the obtained iron precipitates at the bottom of the treatment equipment are separated after standing for a certain period, and the mine water with aluminum ions and iron ions removed is obtained for later use.
The concentration indexes of the metal ions in the acid mine water are shown in the following table (unit: mg/L):
TABLE 1
Specifically, the method comprises the following steps: the acidic mine water refers to water seeped from a mine hole after the coal mine or the pyrite is sealed, or acidic water generated by long-time accumulation of surface water of the coal mine or the pyrite in open-pit mining, and has the following indexes that the pH value is less than 6, and Fe2+、Fe3+、Mn2+、SO4 2-The ion concentration is higher.
Specifically, the method comprises the following steps: the acid mine water also comprises Ca, Mg, Al and other ions.
Specifically, the method comprises the following steps: the acidic mine water is different in occurrence of geological minerals of a mountain, and is likely to contain a certain amount of harmful heavy metal ions such As Cu, Pb, As and the like.
Specifically, the method comprises the following steps: the whole purification requirement can be according to the water quality condition and the value of the deposit resource, and the resource recovery can be selectively carried out on all or part of the metal deposit.
Specifically, the method comprises the following steps: the deep reaction filtering tank arranged at the tail end in the step 6 can further remove ammonia nitrogen ions and residual metal ions in water by using any combination of a denitrification process including a denitrification filtering tank and conventional demanganization and denitrification processes such as manganese sand and zeolite, so that the effluent can be discharged up to the standard.
Specifically, the method comprises the following steps: the specific operation steps in the step 3 are as follows:
firstly removing aluminum ions, slowly and uniformly adding a certain amount of strong base and weak acid salt or a solution of the product into the acidic mine water according to the pH value of the acidic mine water and the concentration data of the aluminum ions in the acidic mine water, stirring for a certain time, raising the pH value of the acidic mine water to 4.5-6.8, generating a white aluminum precipitate through an aluminum ion hydrolysis reaction, standing to obtain the aluminum precipitate, and allowing a supernatant to enter the next process;
the obtained photo and XRF analysis result of the aluminum precipitate after filter pressing and drying refer to Table 2, and the main component of the aluminum precipitate is basic aluminum sulfate according to the XRF analysis result of the aluminum precipitate.
| Al2O3 | SO3 | SiO2 | Fe2O3 | CaO |
| 54.20％ | 28.98％ | 11.46％ | 3.01％ | 2.06％ |
TABLE 2
As shown in fig. 1, specifically: the specific operation steps in the step 4 are as follows:
according to the pH value of the acid mine water and the concentration data of iron ions in the water, slowly and uniformly adding a certain amount of alkali, alkali metal oxide or alkaline strong base and weak acid salt and a compound thereof or a solution of the product into the acid mine water, increasing the pH value of the water to 6.5-8.5, stirring for a certain time, rapidly generating ferric hydroxide and ferrous hydroxide precipitate by the iron ions, standing to obtain an iron precipitate, and allowing the supernatant to enter the next process;
in consideration of the actual requirement of old kiln water treatment in the application example, magnesium ions are not a target treatment item, the process of magnesium ion recovery is not implemented in the embodiment, and manganese ions are removed by other modes.
Specifically, after metal ions are removed, water enters the deep reaction filter, residual iron, manganese ions and ammonia nitrogen ions in the solution are filtered, after the filtration treatment of the deep reaction filter, the effluent meets the surface water environmental quality standard (GB3838-2002) and the coal industry pollutant discharge standard (GB20426-2006) except for total nitrogen and ammonia nitrogen indexes, and the effluent detection indexes refer to Table 5.
Specifically, the method comprises the following steps: in the whole water treatment process, an aeration process can be selectively added in the metal ion removal process of a certain step.
The obtained iron precipitate is subjected to filter pressing and drying, and the picture and XRF analysis result refer to Table 3, and the XRF analysis result shows that the iron precipitate mainly contains ferric hydroxide and can be used as a raw material of an iron oxide red product after being dried.
| Fe2O3 | MrO | SO3 | SiO2 | CaO | MgO | ZnO | Na2O | Al2O3 |
| 89.13％ | 0.06％ | 5.35％ | 2.93％ | 1.06％ | 0.46％ | 0.19％ | 0.27％ | 0.55％ |
TABLE 3
After the treatment of the step 3 and the step 4, the aluminum ions and the iron ions in the acid mine water are basically removed, and the concentration index results of the aluminum ions and the iron ions detected by the effluent (clear liquid) of the step 4 are as follows:
TABLE 4
TABLE 5
And (3) comparing treatment cost:
the acidic mine water is treated according to a precipitation resource recovery process and a traditional precipitation non-recovery process (a calcium oxide process), aluminum salt and iron precipitates are recovered according to certain values respectively, and solid wastes are treated according to the treatment cost of 260 yuan/ton (70% of water content). The two modes are compared in terms of the cost of the integrated operation (unit: yuan/m)3)
TABLE 6
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (11)
1. The low-cost treatment method for recycling the metal ions in the acidic mine water is characterized by comprising the following steps of: the method comprises the following steps:
step 1, purification of acid mine water: extracting the acid mine water into a purifying device for purifying, selectively removing a large amount of metal ions such as Al, Fe, Mg, Mn and the like contained in the acid mine water in a stepwise successive precipitation mode in the purifying process to obtain precipitates with high purity and capable of being recycled, greatly reducing the amount of solid waste formed in the treatment process of the acid mine water by recycling the precipitates of a large amount of metal cations contained in the acid mine water, even realizing the mode operation without the solid waste, and greatly reducing the required cost of solid waste recycling and the total operation cost of the acid mine water purifying process;
step 2, conventionally recovering metal precipitates in the acid mine water: in the step 1, in the synchronous purification, alkali metal oxide or alkaline strong base weak acid salt and compound thereof which are required properly are added through an instrument to carry out step-by-step treatment on the acidic mine water, or solution substances of the products, so that metal ions in the water are generated and precipitated and removed, and the precipitate which is high in purity and can be recycled as resources can be obtained, wherein the alkali, alkali metal oxide or alkaline strong base weak acid salt and compound thereof are specifically one or more of sodium hydroxide, potassium hydroxide, magnesium hydroxide, and oxidized minerals and strong base weak acid salts corresponding to sodium, potassium and magnesium;
and 3, independently recovering aluminum precipitates: in the step 1, in the synchronous purification, the pH value of the mine water is adjusted to 4.5-6.8 through an acid-base adjusting process, the reaction is carried out for a certain time, aluminum precipitates in the water are separated out and naturally precipitated, the aluminum precipitates obtained at the bottom are separated after standing for a certain period, and the mine water without the aluminum precipitates is obtained for later use;
and 4, separately recovering iron precipitate: in the step 1, in the synchronous purification (after the step 3), regulating the pH value of the mine water to 6.2-8.8 by an acid-base regulation process again, reacting for a certain time, separating out iron precipitate in the water, naturally precipitating, standing the obtained iron precipitate at the bottom of the treatment equipment for a certain period, and separating out the iron precipitate to obtain the mine water which does not contain aluminum-containing precipitate and iron precipitate for later use;
and 5, independently recovering magnesium (manganese) precipitate: in the step 1, in the synchronous purification (after the step 4), regulating the pH value of the mine water to 8.3-10.5 by an acid-base regulation process again, and obtaining the mine water without aluminum precipitates, iron precipitates and magnesium (manganese) precipitates for later use after purification;
and 6, deep reaction filtering tank treatment: in the step 1 of synchronous purification, the mine water from which the metal precipitates such as aluminum precipitates, iron precipitates, magnesium precipitates, manganese salt precipitates and the like are removed after the treatment in the steps is conveyed to a deep reaction filtering tank for further purification treatment, so that the quantity of solid waste generated in the treatment process of the acidic mine water is greatly reduced, even the mode operation without solid waste is realized, and the water quality reaches the preset treatment target.
2. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: the acidic mine water refers to water seeped from a mine hole after the coal mine or the pyrite is sealed, or acidic water generated by long-time accumulation of surface water of the coal mine or the pyrite in open-pit mining, and has the following indexes that the pH value is less than 6, and Fe2+、Fe3+、Mn2+、SO4 2-The ion concentration is higher.
3. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 2, characterized in that: the acid mine water also comprises Ca, Mg, Al and other ions.
4. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 2, characterized in that: the acidic mine water is different in occurrence of geological minerals of a mountain, and is likely to contain a certain amount of harmful heavy metal ions such As Cu, Pb, As and the like.
5. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: the whole purification requirement can be according to the water quality condition and the value of the deposit resource, and the resource recovery can be selectively carried out on all or part of the metal deposit.
6. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: the deep reaction filtering tank arranged at the tail end in the step 6 can further remove ammonia nitrogen ions and residual metal ions in water by using any combination of a denitrification process including a denitrification filtering tank and conventional demanganization and denitrification processes such as manganese sand and zeolite, so that the effluent can be discharged up to the standard.
7. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: the specific operation steps in the step 3 are as follows:
firstly removing aluminum ions, slowly and uniformly adding a certain amount of alkali, alkaline metal oxide or alkaline strong base and weak acid salt and a compound thereof or a solution of the product into the acidic mine water according to the pH value of the acidic mine water and the concentration data of the aluminum ions in the water, stirring for a certain time, raising the pH value of the acidic mine water to 4.5-6.8, generating white aluminum precipitate through hydrolysis reaction of the aluminum ions, standing to obtain the aluminum precipitate, and allowing the supernatant to enter the next process;
the obtained photo and XRF analysis result of the aluminum precipitate after filter pressing and drying refer to Table 2, and the main component of the aluminum precipitate is basic aluminum sulfate according to the XRF analysis result of the aluminum precipitate.
8. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: the specific operation steps in the step 4 are as follows:
according to the pH value of the acid mine water and the concentration data of iron ions in the water, slowly and uniformly adding a certain amount of alkali, alkali metal oxide or alkaline strong base and weak acid salt and a compound thereof or a solution of the product into the acid mine water, increasing the pH value of the water to 6.5-8.5, stirring for a certain time, rapidly generating ferric hydroxide and ferrous hydroxide precipitate by the iron ions, standing to obtain an iron precipitate, and allowing the supernatant to enter the next process;
the obtained iron precipitate is subjected to filter pressing and drying, and the picture and XRF analysis result refer to Table 3, and the XRF analysis result shows that the iron precipitate mainly contains ferric hydroxide and can be used as a raw material of an iron oxide red product after being dried.
9. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: the specific operation steps in the step 5 are as follows:
according to the pH value of the acid mine water and the concentration data of magnesium (manganese) ions in the water, slowly and uniformly adding a certain amount of alkali, alkali metal oxide or alkaline strong base weak acid salt or compound or solution thereof into the acid mine water, increasing the pH value of the water to 8.3-10.5, stirring for a certain time, rapidly generating magnesium hydroxide (manganese hydroxide) precipitate by the magnesium (or manganese) ions, standing to obtain magnesium (manganese) precipitate, and allowing the supernatant to enter the next process;
considering the actual requirement of acid mine water treatment, magnesium ions are not a target treatment item and can be selectively removed or retained from the economic cost perspective, and manganese ions can be removed in other modes.
10. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: after metal ions are removed, water enters the deep reaction filter, residual iron, manganese ions and ammonia nitrogen ions in the solution are filtered, after the filtration treatment of the deep reaction filter, the effluent meets the environmental quality standard of surface water (GB3838-2002) and the emission standard of pollutants in coal industry (GB20426-2006) except for total nitrogen and ammonia nitrogen indexes, and the effluent detection indexes refer to Table 5.
11. The low-cost acidic mine water metal ion resource recovery-based treatment method according to claim 1, characterized in that: in the whole water treatment process, an aeration process can be selectively added in the metal ion removal process of a certain step.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544900A (en) * | 2022-03-08 | 2022-05-27 | 贵州省地质环境监测院(贵州省环境地质研究所) | Simulation experiment method for acid mine water and geological control of coal mine |
| CN114990340A (en) * | 2022-06-10 | 2022-09-02 | 贵州大学 | Method for separating and recovering rare earth elements from acid mine wastewater |
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| CN114990340A (en) * | 2022-06-10 | 2022-09-02 | 贵州大学 | Method for separating and recovering rare earth elements from acid mine wastewater |
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