CN115353248A - Mine water treatment process with silicon removal and hardness removal procedures - Google Patents
Mine water treatment process with silicon removal and hardness removal procedures Download PDFInfo
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- CN115353248A CN115353248A CN202211010936.3A CN202211010936A CN115353248A CN 115353248 A CN115353248 A CN 115353248A CN 202211010936 A CN202211010936 A CN 202211010936A CN 115353248 A CN115353248 A CN 115353248A
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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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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
- C01D3/08—Preparation by working up natural or industrial salt mixtures or siliceous minerals
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/22—Preparation in the form of granules, pieces, or other shaped products
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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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
- C02F1/44—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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/583—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing fluoride or fluorine compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a mine water treatment process with silicon removal and hardness removal procedures, which comprises the following steps of S1, mine water extraction: firstly, extracting mine water, filtering the mine water to enter a reservoir, pre-treating the mine water before a membrane to remove large-particle impurities, pumping the mine water to a ceramic membrane ultrafiltration device by a water pump, and filtering the mine water to obtain clear water; s2, removing fluorine: then, pumping the extracted mine water into a defluorination reactor, and adding a defluorination agent for mixed reaction; s3, precipitating suspended matters: then, introducing the mine water into a reaction tank, and adding a desalting agent into the reaction tank, wherein the invention relates to the technical field of mine water treatment. This set up mine water treatment process who removes silicon and go hard process through carrying out chemical treatment to the mine water, gets rid of a large amount of ions in the mine water, reduces the pollution to the environment, has solved the total ion content that current mine aquatic contains and has been much higher than general surface water, and the mine water is if direct outer row not only causes the environmental impact, still to the problem of the very big waste of water resource.
Description
Technical Field
The invention relates to the technical field of mine water treatment, in particular to a mine water treatment process with silicon removal and hardness removal procedures.
Background
In the coal mining process, underground water is in contact with a coal bed and a rock stratum and is subjected to a series of physical, chemical and biochemical reactions under the influence of human activities, so that the water quality has the obvious characteristics of the coal industry that the content of suspended matters in mine water containing the suspended matters is far higher than that of surface water, and the sensory properties are poor; the particle size of the suspended matters is small, the specific gravity is light, the sedimentation speed is slow, and the coagulation effect is poor; the mine water also contains organic pollutants such as waste engine oil, emulsified oil and the like. Mine water contains much higher total ion content than normal surface water and a large portion is sulfate ions. The pH value of the mine water is usually extremely low, and a large amount of ferrous ions are often accompanied, so that the treatment difficulty is increased.
The total ion content of the existing mine water is much higher than that of the common surface water, and if the mine water is directly discharged, not only is the environment influenced, but also the water resource is greatly wasted, so the invention provides a mine water treatment process with silicon removal and hardness removal procedures, which is used for solving the problems.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a mine water treatment process with silicon removal and hardness removal procedures, and solves the problems that the total ion content in the existing mine water is much higher than that of common surface water, and if the mine water is directly discharged, not only is the environment affected, but also the water resource is greatly wasted.
In order to realize the purpose, the invention is realized by the following technical scheme: a mine water treatment process with silicon removal and hardness removal procedures specifically comprises the following steps:
s1, mine water extraction: firstly, extracting mine water, filtering the mine water into a reservoir, performing pre-membrane pretreatment to remove large-particle impurities, pumping the mine water to ceramic membrane ultrafiltration equipment by a water pump, and filtering to obtain clear water;
s2, removing fluorine: then, pumping the extracted mine water into a defluorination reactor, and adding a defluorination agent for mixed reaction;
s3, precipitating suspended matters: then, introducing the mine water into a reaction tank, adding a desalting agent into the reaction tank, then sequentially adding polyacrylamide and polyaluminum chloride into the reaction tank for reaction to form flocculent precipitate, and then discharging the treated water into a settling tank;
s4, removing silicon and hardness: then, introducing the mine water into a settling tank, adding a magnesium agent to remove silicon ions in the water, then adding calcium hydroxide into the settling tank to remove magnesium ions in the water, and then adding sodium carbonate into the settling tank to remove calcium ions in the water;
s5, crystallization: and finally, feeding the mine water into an evaporative crystallizer for evaporative crystallization to obtain sodium chloride and sodium chloride distilled water.
Preferably, the pH of the mine water in S4 is adjusted to 10 before the magnesium agent is added.
Preferably, the pH of the mine water in S4 is adjusted to 12 before the calcium hydroxide is added.
Preferably, the silicon concentration of the water produced by the control desilication in the S4 is less than 30mg/L.
Preferably, the defluorination process in S2 takes 5 minutes.
Preferably, the desalting agent in S3 is an aminocarboxylic acid.
Preferably, the concentration of magnesium ions in the control product water in S4 is less than 20mg/L.
Preferably, the concentration of calcium ions in the control production water in S4 is less than 20mg/L.
Advantageous effects
The invention provides a mine water treatment process with silicon removal and hardness removal procedures. Compared with the prior art, the method has the following beneficial effects:
according to the mine water treatment process with the procedures of silicon removal and hardness removal, the mine water is extracted in S1: firstly, extracting mine water, filtering the mine water to enter a reservoir, pre-treating the mine water before a membrane to remove large-particle impurities, pumping the mine water to a ceramic membrane ultrafiltration device by a water pump, and filtering the mine water to obtain clear water; s2, removing fluorine: then, pumping the extracted mine water into a defluorination reactor, and adding a defluorination agent for mixed reaction; s3, precipitating suspended matters: then, introducing the mine water into a reaction tank, adding a desalting agent into the reaction tank, sequentially adding polyacrylamide and polyaluminium chloride into the reaction tank for reaction to form flocculent precipitate, and then discharging the water obtained after treatment into a settling tank; s4, removing silicon and hardness: then, introducing the mine water into a settling tank, adding a magnesium agent to remove silicon ions in the water, then adding calcium hydroxide into the settling tank to remove magnesium ions in the water, and then adding sodium carbonate into the settling tank to remove calcium ions in the water; s5, crystallization: and finally, sending the mine water into an evaporative crystallizer for evaporative crystallization to obtain sodium chloride and sodium chloride distilled water, and chemically treating the mine water to remove a large amount of ions in the mine water, reduce the pollution to the environment, and solve the problems that the total ion content in the existing mine water is much higher than that of the common surface water, and the mine water is directly discharged to cause environmental influence and is also greatly wasted on water resources.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1, the present invention provides three technical solutions:
the first scheme is as follows: a mine water treatment process with silicon removal and hardness removal procedures specifically comprises the following steps:
s1, extracting mine water: firstly, extracting mine water, filtering the mine water to enter a reservoir, pre-treating the mine water before a membrane to remove large-particle impurities, pumping the mine water to a ceramic membrane ultrafiltration device by a water pump, and filtering the mine water to obtain clear water;
s2, removing fluorine: then, pumping the extracted mine water into a defluorination reactor, and adding a defluorination agent for mixed reaction;
s3, precipitating suspended matters: then, introducing the mine water into a reaction tank, adding a desalting agent into the reaction tank, sequentially adding polyacrylamide and polyaluminium chloride into the reaction tank for reaction to form flocculent precipitate, and then discharging the water obtained after treatment into a settling tank;
s4, removing silicon and hardness: then, introducing the mine water into a settling tank, adding a magnesium agent to remove silicon ions in the water, then adding calcium hydroxide into the settling tank to remove magnesium ions in the water, and then adding sodium carbonate into the settling tank to remove calcium ions in the water;
s5, crystallization: and finally, feeding the mine water into an evaporative crystallizer for evaporative crystallization to obtain sodium chloride and sodium chloride distilled water.
In the invention, before the magnesium agent is added into S4, the pH value of the mine water needs to be adjusted to 10.
In the invention, before adding the calcium hydroxide into the S4, the pH value of the mine water needs to be adjusted to 12.
In the invention, the silicon concentration of the water produced by the desiliconization in S4 is controlled to be 10mg/L.
In the present invention, the defluorination process in S2 takes 5 minutes.
In the present invention, aminocarboxylic acid is used as the desalting agent in S3.
In the invention, the concentration of magnesium ions in the produced water is controlled to be 5mg/L in S4.
In the invention, the calcium ion concentration in the produced water is controlled to be 5mg/L in S4.
Scheme two is as follows: a mine water treatment process with silicon removal and hardness removal procedures specifically comprises the following steps:
s1, extracting mine water: firstly, extracting mine water, filtering the mine water into a reservoir, performing pre-membrane pretreatment to remove large-particle impurities, pumping the mine water to ceramic membrane ultrafiltration equipment by a water pump, and filtering to obtain clear water;
s2, removing fluorine: then, pumping the extracted mine water into a defluorination reactor, and adding a defluorination agent for mixed reaction;
s3, precipitating suspended matters: then, introducing the mine water into a reaction tank, adding a desalting agent into the reaction tank, sequentially adding polyacrylamide and polyaluminium chloride into the reaction tank for reaction to form flocculent precipitate, and then discharging the water obtained after treatment into a settling tank;
s4, removing silicon and hardness: then, introducing the mine water into a sedimentation tank, adding a magnesium agent to remove silicon ions in the water, then adding calcium hydroxide into the sedimentation tank to remove magnesium ions in the water, and then adding sodium carbonate into the sedimentation tank to remove calcium ions in the water;
s5, crystallization: and finally, feeding the mine water into an evaporative crystallizer for evaporative crystallization to obtain sodium chloride and sodium chloride distilled water.
In the invention, before the magnesium agent is added into S4, the pH value of the mine water needs to be adjusted to 10.
In the invention, the pH value of the mine water is required to be adjusted to 12 before the calcium hydroxide is added into the S4.
In the invention, the silicon concentration of the water produced by controlling the desilication in S4 is 15mg/L.
In the present invention, the defluorination process in S2 takes 5 minutes.
In the present invention, aminocarboxylic acid is used as the desalting agent in S3.
In the invention, the concentration of magnesium ions in the produced water is controlled to be 10mg/L in S4.
In the invention, the concentration of calcium ions in the produced water is controlled to be 10mg/L in S4.
And a third scheme is as follows: a mine water treatment process with silicon removal and hardness removal procedures specifically comprises the following steps:
s1, extracting mine water: firstly, extracting mine water, filtering the mine water to enter a reservoir, pre-treating the mine water before a membrane to remove large-particle impurities, pumping the mine water to a ceramic membrane ultrafiltration device by a water pump, and filtering the mine water to obtain clear water;
s2, removing fluorine: then, pumping the extracted mine water into a defluorination reactor, and adding a defluorination agent for mixed reaction;
s3, precipitating suspended matters: then, introducing the mine water into a reaction tank, adding a desalting agent into the reaction tank, sequentially adding polyacrylamide and polyaluminium chloride into the reaction tank for reaction to form flocculent precipitate, and then discharging the water obtained after treatment into a settling tank;
s4, removing silicon and hardness: then, introducing the mine water into a sedimentation tank, adding a magnesium agent to remove silicon ions in the water, then adding calcium hydroxide into the sedimentation tank to remove magnesium ions in the water, and then adding sodium carbonate into the sedimentation tank to remove calcium ions in the water;
s5, crystallization: and finally, feeding the mine water into an evaporative crystallizer for evaporative crystallization to obtain sodium chloride and sodium chloride distilled water.
In the invention, before the magnesium agent is added into S4, the pH value of the mine water needs to be adjusted to 10.
In the invention, the pH value of the mine water is required to be adjusted to 12 before the calcium hydroxide is added into the S4.
In the invention, the silicon concentration of the water produced by the desiliconization in S4 is controlled to be 20mg/L.
In the present invention, the defluorination process in S2 takes 5 minutes.
In the present invention, aminocarboxylic acid is used as the desalting agent in S3.
In the invention, the concentration of magnesium ions in the produced water is controlled to be 15mg/L in S4.
In the invention, the concentration of calcium ions in the produced water is controlled to be 15mg/L in S4.
And those not described in detail in this specification are well within the skill of the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A mine water treatment process with silicon removal and hard removal procedures is characterized in that: the method specifically comprises the following steps:
s1, extracting mine water: firstly, extracting mine water, filtering the mine water to enter a reservoir, pre-treating the mine water before a membrane to remove large-particle impurities, pumping the mine water to a ceramic membrane ultrafiltration device by a water pump, and filtering the mine water to obtain clear water;
s2, removing fluorine: then, pumping the extracted mine water into a defluorination reactor, and adding a defluorination agent for mixed reaction;
s3, precipitating suspended matters: then, introducing the mine water into a reaction tank, adding a desalting agent into the reaction tank, sequentially adding polyacrylamide and polyaluminium chloride into the reaction tank for reaction to form flocculent precipitate, and then discharging the water obtained after treatment into a settling tank;
s4, removing silicon and hardness: then, introducing the mine water into a settling tank, adding a magnesium agent to remove silicon ions in the water, then adding calcium hydroxide into the settling tank to remove magnesium ions in the water, and then adding sodium carbonate into the settling tank to remove calcium ions in the water;
s5, crystallization: and finally, feeding the mine water into an evaporative crystallizer for evaporative crystallization to obtain sodium chloride and sodium chloride distilled water.
2. The mine water treatment process provided with the silicon removal and hardness removal procedures as claimed in claim 1, wherein: in the S4, before the magnesium agent is added, the pH value of the mine water needs to be adjusted to 10.
3. The mine water treatment process provided with the silicon removal and hardness removal procedures as claimed in claim 1, wherein: in the S4, before the calcium hydroxide is added, the pH value of the mine water needs to be adjusted to 12.
4. The mine water treatment process provided with the silicon removal and hardness removal procedures as claimed in claim 1, wherein: and the silicon concentration of the water produced by the desiliconization in the S4 is controlled to be less than 30mg/L.
5. The mine water treatment process provided with the silicon removal and hardness removal procedures as claimed in claim 1, wherein: the defluorination process in S2 takes 5 minutes.
6. The mine water treatment process provided with the silicon removal and hardness removal procedures as claimed in claim 1, wherein: and the desalting agent in the S3 adopts aminocarboxylic acid.
7. The mine water treatment process provided with the silicon removal and hardness removal procedures as claimed in claim 1, wherein: and the concentration of magnesium ions in the produced water is controlled to be less than 20mg/L in the S4.
8. The mine water treatment process provided with the silicon removal and hardness removal procedures as claimed in claim 1, wherein: and the concentration of calcium ions in the produced water is controlled to be less than 20mg/L in the S4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211010936.3A CN115353248A (en) | 2022-08-23 | 2022-08-23 | Mine water treatment process with silicon removal and hardness removal procedures |
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| CN202211010936.3A CN115353248A (en) | 2022-08-23 | 2022-08-23 | Mine water treatment process with silicon removal and hardness removal procedures |
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| CN115353248A true CN115353248A (en) | 2022-11-18 |
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| CN202211010936.3A Pending CN115353248A (en) | 2022-08-23 | 2022-08-23 | Mine water treatment process with silicon removal and hardness removal procedures |
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