CN117023834A - High-hardness water purification treatment recycling process - Google Patents
High-hardness water purification treatment recycling process Download PDFInfo
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- CN117023834A CN117023834A CN202310497161.5A CN202310497161A CN117023834A CN 117023834 A CN117023834 A CN 117023834A CN 202310497161 A CN202310497161 A CN 202310497161A CN 117023834 A CN117023834 A CN 117023834A
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- sedimentation tank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004064 recycling Methods 0.000 title claims abstract description 29
- 238000011282 treatment Methods 0.000 title claims abstract description 24
- 238000000746 purification Methods 0.000 title claims abstract description 17
- 238000004062 sedimentation Methods 0.000 claims abstract description 54
- 239000008233 hard water Substances 0.000 claims abstract description 49
- 239000012528 membrane Substances 0.000 claims abstract description 36
- 238000005273 aeration Methods 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000013505 freshwater Substances 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 19
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 13
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000011575 calcium Substances 0.000 claims abstract description 13
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 13
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 8
- 229940037003 alum Drugs 0.000 claims abstract description 8
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 38
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 32
- 238000005276 aerator Methods 0.000 claims description 20
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 239000008234 soft water Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000001728 nano-filtration Methods 0.000 claims description 7
- 238000001223 reverse osmosis Methods 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 4
- 230000002378 acidificating effect Effects 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
- C02F5/06—Softening water by precipitation of the hardness using calcium compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
- C02F5/125—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen combined with inorganic substances
-
- 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
-
- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a high-hardness water purification treatment recycling process, and relates to the technical field of hard water softening. The high-hardness water purifying treatment recycling process comprises the following steps: step one: introducing high-hardness water into an aeration tank, adding a pH regulator, and filtering; step two: adding a hard water softener into a sedimentation tank, adding a pH regulator into the sedimentation tank, and filtering; step three: filtering the sedimentation tank through a filter screen, and introducing the filtered hard water into a membrane separation tank through a water pump so as to intercept calcium and magnesium ions in the hard water; step four: and (3) introducing water in the membrane separation tank into a filter, filtering and clarifying, adding a small amount of pH regulator to adjust the pH to 6-8, and finally introducing the water into a fresh water tank, and conveying the fresh water into a user for recycling by a fresh water pump. In the process, the hard water softener adopts alum, polyaluminium chloride and acrylamide as main components, and can effectively remove calcium and magnesium ions in hard water, thereby improving the softening effect of the hard water.
Description
Technical Field
The invention relates to the technical field of hard water softening, in particular to a high-hardness water purifying treatment recycling process.
Background
With water starvation, water supply has become an expanding limiting factor for enterprises.
In order to ensure that the industrial wastewater treatment reaches the emission standard, treatment agents such as excessive lime and the like are often added, so that the treated wastewater is high in salt content and hardness, and is directly used for agricultural irrigation to cause salinization of soil, and is used for the industry to cause scaling, blockage and the like to negatively influence the use of the wastewater, so that the wastewater is often directly discharged. In the prior art, the reclaimed water recycling method is realized by biological treatment, precipitation and filtration, the technology has relatively high capital cost, the treatment effect is not very good, the recycling range of the reclaimed water is influenced, the operability of the technology is relatively poor, and the biological treatment effect needs to be controlled.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a high-hardness water purification treatment recycling process, which solves the problem that the existing hard water purification process is poor in operability.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a high hardness water purifying treatment recycling process comprises the following steps:
step one: introducing high-hardness water into an aeration tank, adding a pH regulator, regulating the pH of the water to 8-10, continuously aerating the high-hardness water through an aerator, filtering the aerated high-hardness water through a filter screen, and introducing the water into a sedimentation tank;
step two: adding a hard water softener into the sedimentation tank, adding a pH regulator into the sedimentation tank, and aerating soft water in the sedimentation tank through an aerator;
step three: filtering the sedimentation tank through a filter screen, and introducing the filtered hard water into a membrane separation tank through a water pump so as to intercept calcium and magnesium ions in the hard water;
step four: and (3) introducing water in the membrane separation tank into a filter, filtering and clarifying, adding a small amount of pH regulator to adjust the pH to 6-8, and finally introducing the water into a fresh water tank, and conveying the fresh water into a user for recycling by a fresh water pump.
Preferably, the pH regulator is divided into an alkaline regulator and an acidic regulator, wherein the alkaline regulator is one of caustic soda, sodium carbonate and lime, the acidic regulator is one of sulfuric acid and sulfur dioxide, and the concentration of sulfuric acid is 9mol/L.
Preferably, the hard water softener is composed of the following raw materials in parts by mass: 5-15 parts of alum, 1-15 parts of polyaluminium chloride, 0-1 part of acrylamide and 80-100 parts of water.
Preferably, the aeration tank and the sedimentation tank are both internally provided with an aerator.
Preferably, a nanofiltration membrane and a reverse osmosis membrane are arranged in the membrane separation tank.
Preferably, a coarse screen layer, a fine screen layer, a molecular screen layer, a zeolite layer and an activated carbon layer are arranged in the filter.
Preferably, the pore diameter of the filter screen in the aeration tank is set to be 0.8 mu m.
Preferably, the pore diameter of the filter screen in the sedimentation tank is set to be 0.22 mu m.
(III) beneficial effects
The invention provides a high-hardness water purification treatment recycling process. The beneficial effects are as follows:
1. the process uses an aeration tank and a sedimentation tank, the aeration tank and the sedimentation tank are internally provided with an aerator, the aerator can perform aeration, so that soft water sedimentation and the diffusion of a hard water softener and a pH regulator are quickened, the aeration tank is regulated to be alkaline, then partial calcium and magnesium ions are precipitated, the hard water softener in the sedimentation tank can remove most of calcium and magnesium ions in hard water, and the hard water softener and the sedimentation tank are combined, can be used for distributing and removing calcium and magnesium ions in the hard water, and can effectively purify the hard water.
2. The process is provided with the hard water softener, and the hard water softener adopts alum, polyaluminium chloride and acrylamide as main components, so that calcium and magnesium ions in hard water can be effectively removed, and the softening effect of the hard water is improved.
3. The process is provided with the membrane separation tank, and the membrane separation tank can effectively filter residual calcium and magnesium ions in water through the nanofiltration membrane and the reverse osmosis membrane, so that the softening degree of hard water is greatly improved.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the embodiment of the invention provides a high-hardness water purification treatment recycling process, which comprises the following steps of:
step one: introducing high-hardness water into an aeration tank, adding sodium carbonate or dilute sulfuric acid, regulating the pH of the water to 8-10, continuously aerating the high-hardness water through an aerator, filtering the aerated high-hardness water through a filter screen, introducing the water into a sedimentation tank, and setting the pore diameter of the filter screen in the aeration tank to 0.8 mu m by using the aerators in the aeration tank and the sedimentation tank.
Step two: adding a hard water softener into a sedimentation tank, adding a sulfuric acid solution with the concentration of 9mol/L into the sedimentation tank, and aerating soft water in the sedimentation tank through an aerator to accelerate the sedimentation of the soft water and the diffusion of the hard water softener, sodium carbonate or dilute sulfuric acid, wherein the hard water softener is composed of the following raw materials in parts by mass: 15 parts of alum, 15 parts of polyaluminium chloride and 100 parts of water, wherein the pore diameter of a filter screen in a sedimentation tank is set to be 0.22 mu m.
Step three: the sedimentation tank is filtered through the filter screen, and the filtered hard water is led into the membrane separation tank through the water pump, so that calcium and magnesium ions in the hard water are intercepted, and a nanofiltration membrane and a reverse osmosis membrane are arranged in the membrane separation tank.
Step four: the water in the membrane separation tank is led into a filter for filtering and clarifying, a small amount of sodium carbonate or dilute sulfuric acid is added for regulating the pH value to 6-8, finally, the water is led into a fresh water tank, the fresh water is sent into a user for recycling by a fresh water pump, a coarse screen layer, a fine screen layer, a molecular screen layer, a zeolite layer and an active carbon layer are sequentially arranged in the filter from top to bottom, and the led water firstly contacts the coarse screen layer.
Embodiment two:
the embodiment of the invention provides a high-hardness water purification treatment recycling process, which comprises the following steps of:
step one: introducing high-hardness water into an aeration tank, adding sodium carbonate or dilute sulfuric acid, regulating the pH of the water to 8-10, continuously aerating the high-hardness water through an aerator, filtering the aerated high-hardness water through a filter screen, introducing the water into a sedimentation tank, and setting the pore diameter of the filter screen in the aeration tank to 0.8 mu m by using the aerators in the aeration tank and the sedimentation tank.
Step two: adding a hard water softener into a sedimentation tank, adding the hard water softener into the sedimentation tank, and aerating soft water in the sedimentation tank through an aerator to accelerate the sedimentation of the soft water and the diffusion of the hard water softener, sodium carbonate or dilute sulfuric acid, wherein the hard water softener is composed of the following raw materials in parts by mass: 15 parts of alum, 5 parts of polyaluminium chloride, 1 part of acrylamide and 100 parts of water, wherein the pore diameter of a filter screen in a sedimentation tank is set to be 0.22 mu m.
Step three: the sedimentation tank is filtered through the filter screen, and the filtered hard water is led into the membrane separation tank through the water pump, so that calcium and magnesium ions in the hard water are intercepted, and a nanofiltration membrane and a reverse osmosis membrane are arranged in the membrane separation tank.
Step four: the water in the membrane separation tank is led into a filter for filtering and clarifying, a small amount of sodium carbonate or dilute sulfuric acid is added for regulating the pH value to 6-8, and finally the water is led into a fresh water tank, and is sent into a user for recycling by a fresh water pump, and a coarse screen layer, a fine screen layer, a molecular screen layer, a zeolite layer and an active carbon layer are arranged in the filter.
Embodiment III:
the embodiment of the invention provides a high-hardness water purification treatment recycling process, which comprises the following steps of:
step one: introducing high-hardness water into an aeration tank, adding sodium carbonate or dilute sulfuric acid, regulating the pH of the water to 8-10, continuously aerating the high-hardness water through an aerator, filtering the aerated high-hardness water through a filter screen, introducing the water into a sedimentation tank, and setting the pore diameter of the filter screen in the aeration tank to 0.8 mu m by using the aerators in the aeration tank and the sedimentation tank.
Step two: adding a hard water softener into a sedimentation tank, adding sodium carbonate or dilute sulfuric acid into the sedimentation tank, and aerating soft water in the sedimentation tank through an aerator to accelerate the sedimentation of the soft water and the diffusion of the hard water softener, the sodium carbonate or the dilute sulfuric acid, wherein the hard water softener is composed of the following raw materials in parts by mass: 15 parts of alum, 10 parts of polyaluminium chloride, 0.5 part of acrylamide and 80 parts of water, wherein the pore diameter of a filter screen in a sedimentation tank is set to be 0.22 mu m.
Step three: the sedimentation tank is filtered through the filter screen, and the filtered hard water is led into the membrane separation tank through the water pump, so that calcium and magnesium ions in the hard water are intercepted, and a nanofiltration membrane and a reverse osmosis membrane are arranged in the membrane separation tank.
Step four: the water in the membrane separation tank is led into a filter for filtering and clarifying, a small amount of sodium carbonate or dilute sulfuric acid is added for regulating the pH value to 6-8, finally, the water is led into a fresh water tank, the fresh water is sent into a user for recycling by a fresh water pump, a coarse screen layer, a fine screen layer, a molecular screen layer, a zeolite layer and an active carbon layer are sequentially arranged in the filter from top to bottom, and the led water firstly contacts the coarse screen layer.
Embodiment four:
the embodiment of the invention provides a high-hardness water purification treatment recycling process, which comprises the following steps of:
step one: introducing high-hardness water into an aeration tank, adding sodium carbonate or dilute sulfuric acid, regulating the pH of the water to 8-10, continuously aerating the high-hardness water through an aerator, filtering the aerated high-hardness water through a filter screen, introducing the water into a sedimentation tank, and setting the pore diameter of the filter screen in the aeration tank to 0.8 mu m by using the aerators in the aeration tank and the sedimentation tank.
Step two: adding a hard water softener into a sedimentation tank, adding sodium carbonate or dilute sulfuric acid into the sedimentation tank, and aerating soft water in the sedimentation tank through an aerator to accelerate the sedimentation of the soft water and the diffusion of the hard water softener, the sodium carbonate or the dilute sulfuric acid, wherein the hard water softener is composed of the following raw materials in parts by mass: 15 parts of alum, 1 part of polyaluminium chloride, 0.5 part of acrylamide and 100 parts of water, wherein the pore diameter of a filter screen in a sedimentation tank is set to be 0.22 mu m.
Step three: the sedimentation tank is filtered through the filter screen, and the filtered hard water is led into the membrane separation tank through the water pump, so that calcium and magnesium ions in the hard water are intercepted, and a nanofiltration membrane and a reverse osmosis membrane are arranged in the membrane separation tank.
Step four: the water in the membrane separation tank is led into a filter for filtering and clarifying, a small amount of sodium carbonate or dilute sulfuric acid is added for regulating the pH value to 6-8, finally, the water is led into a fresh water tank, the fresh water is sent into a user for recycling by a fresh water pump, a coarse screen layer, a fine screen layer, a molecular screen layer, a zeolite layer and an active carbon layer are sequentially arranged in the filter from top to bottom, and the led water firstly contacts the coarse screen layer.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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. The high-hardness water purifying treatment recycling process is characterized by comprising the following steps of:
step one: introducing high-hardness water into an aeration tank, adding a pH regulator, regulating the pH of the water to 8-10, continuously aerating the high-hardness water through an aerator, filtering the aerated high-hardness water through a filter screen, and introducing the water into a sedimentation tank;
step two: adding a hard water softener into the sedimentation tank, adding a pH regulator into the sedimentation tank, and aerating soft water in the sedimentation tank through an aerator;
step three: filtering the sedimentation tank through a filter screen, and introducing the filtered hard water into a membrane separation tank through a water pump so as to intercept calcium and magnesium ions in the hard water;
step four: and (3) introducing water in the membrane separation tank into a filter, filtering and clarifying, adding a small amount of pH regulator to adjust the pH to 6-8, and finally introducing the water into a fresh water tank, and conveying the fresh water into a user for recycling by a fresh water pump.
2. The high-hardness water purification treatment recycling process according to claim 1, wherein the process comprises the following steps of: the pH regulator is divided into an alkaline regulator and an acidic regulator, wherein the alkaline regulator is one of caustic soda, sodium carbonate and lime, the acidic regulator is one of sulfuric acid and sulfur dioxide, and the concentration of sulfuric acid is 9mol/L.
3. The high-hardness water purification treatment recycling process according to claim 1, wherein the process comprises the following steps of: the hard water softener consists of the following raw materials in parts by mass: 5-15 parts of alum, 1-15 parts of polyaluminium chloride, 0-1 part of acrylamide and 80-100 parts of water.
4. The high-hardness water purification treatment recycling process according to claim 1, wherein the process comprises the following steps of: and the aeration tank and the sedimentation tank are internally provided with aerators.
5. The high-hardness water purification treatment recycling process according to claim 1, wherein the process comprises the following steps of: the inside of the membrane separation tank is provided with a nanofiltration membrane and a reverse osmosis membrane.
6. The high-hardness water purification treatment recycling process according to claim 1, wherein the process comprises the following steps of: the filter is internally provided with a coarse screen layer, a fine screen layer, a molecular screen layer, a zeolite layer and an active carbon layer.
7. The high-hardness water purification treatment recycling process according to claim 1, wherein the process comprises the following steps of: the aperture of the filter screen in the aeration tank is set to be 0.8 mu m.
8. The high-hardness water purification treatment recycling process according to claim 1, wherein the process comprises the following steps of: the aperture of the filter screen in the sedimentation tank is set to be 0.22 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310497161.5A CN117023834A (en) | 2023-05-05 | 2023-05-05 | High-hardness water purification treatment recycling process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310497161.5A CN117023834A (en) | 2023-05-05 | 2023-05-05 | High-hardness water purification treatment recycling process |
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| CN117023834A true CN117023834A (en) | 2023-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117509996A (en) * | 2024-01-05 | 2024-02-06 | 山东域潇锆钛矿业股份有限公司 | Wastewater treatment device and wastewater treatment method for perovskite flotation |
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2023
- 2023-05-05 CN CN202310497161.5A patent/CN117023834A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117509996A (en) * | 2024-01-05 | 2024-02-06 | 山东域潇锆钛矿业股份有限公司 | Wastewater treatment device and wastewater treatment method for perovskite flotation |
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