Artificial swimming pool water treatment system

Abstract

The utility model belongs to the technical field of domestic water supply treatment, and particularly relates to an artificial swimming pool water treatment system. Comprising a hair collector (5), a suspended fiber ball reaction tank (7) and a natural zeolite exchange column (14), a water inlet of the suspended fiber ball reaction tank (7) is connected with a water outlet of the hair collector (5) through a pipeline, and a water outlet of the suspended fiber ball reaction tank (7) is connected with a water inlet of the natural zeolite exchange column (14) through a pipeline. In the system, a hair collector, a suspended fiber ball reaction tank and a natural zeolite exchange column are combined to treat circulating water of the swimming pool in a staged manner, so that core factors caused by human body activities in the swimming process are solved, and the water treatment system is high in adaptability, low in operation cost and good in human body perception; the free chlorine concentration of the swimming pool water body is maintained at 0.3-0.5 mg / L, the circulating frequency of the circulating water of the swimming pool is kept unchanged, and the water treatment requirement is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of domestic water treatment, and particularly relates to an artificial swimming pool water treatment system. Background Art

[0002] The treatment of artificial swimming pool water involves many aspects such as water quality hygiene standards, water circulation methods, disinfection methods, etc. The water quality hygiene standards should meet the requirements of GB37488-2019, the hygiene indicators and limit values for public places.

[0003] According to GB37488-2019, the raw water and make-up water used in artificial swimming pools should comply with the hygienic standards for domestic drinking water in GB5749. Due to the influence of human activities during swimming in artificial swimming pool water, the water quality changes greatly, and specific requirements are particularly put forward for temperature, pH value, turbidity, free residual chlorine, combined residual chlorine, total number of colonies, Escherichia coli, etc. See Table 4 in 4.4.1.1 of GB37488-2019, which is attached to the accompanying drawings of the specification Figure 4 here.

[0004] It can be seen from Table 4 in 4.4.1.1 of GB37488-2019 that due to the influence of human activities, the water quality hygiene standards for artificial swimming pools have added the limitation of characteristic pollution indexes such as cyanuric acid, urea, total number of colonies, coliform group, etc. In order to inhibit these characteristic pollution indexes, the disinfection method adopted for artificial swimming pool water treatment adds oxidants containing chlorine or oxygen. In order to effectively eliminate or inhibit these characteristic pollution indexes, the oxidant must have a certain excess value. Therefore, characteristic oxidant limitation indexes such as free residual chlorine, combined residual chlorine, ozone, oxidation-reduction potential, etc. have been added to the excess value of the oxidant. For example: the requirement for free residual chlorine is: 0.3~1.0mg / L. If the free residual chlorine is lower than 0.3mg / L, it cannot effectively inhibit characteristic pollution indexes such as total number of colonies and coliform group. If the free residual chlorine is higher than 1.0mg / L, it will cause serious discomfort due to the stimulation of the free residual chlorine to human organs such as eyes and nose. In fact, due to the existence of a large amount of reducing substances such as cyanuric acid and urea in the artificial swimming pool water body, a large amount of free residual chlorine is consumed, forcing the artificial swimming pool water body to maintain a relatively high free residual chlorine index, which not only increases the use of chlorine-containing oxidants but also aggravates the discomfort of the human body. In order to reduce the free residual chlorine index of the artificial swimming pool water body, only by increasing the water circulation frequency, the operating cost is increased.

[0005] Schematic diagram of a conventional artificial swimming pool water treatment system, refer to Figure 1Understanding: After the swimming pool water is collected through the overflow water channel and converges into the balance pool, it enters the circulating pipeline together with the make-up water. Driven by the circulating water pump, it flows through the hair collector to filter out hair and larger-sized particulate impurities; then it enters the quartz sand filter to further filter out suspended solids in the water. If necessary, flocculants can be added in this step; then it enters the disinfection system. The disinfection system includes a chemical feeder for dispensing chlorine-containing or oxygen-containing oxidants. Chlorine-containing oxidants such as bleaching powder (active ingredient: calcium hypochlorite, Ca(ClO)₂), chlorine gas (Cl₂), oxygen-containing oxidants such as hydrogen peroxide (H₂O₂), chlorine dioxide (ClO₂), and an ultraviolet light (UV) disinfection device. Finally, after the temperature is adjusted by the heat exchanger, it returns to the swimming pool. Summary of the Invention

[0006] To solve the problems existing in the prior art, the present invention provides an artificial swimming pool water treatment system, which solves the core factors caused by human activities during swimming. It is a water treatment system with strong adaptability, low operating cost, and good human perception.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: An artificial swimming pool water treatment system includes: a hair collector, which is provided with an inlet and an outlet. It also includes: a suspended fiber ball reaction tank and a natural zeolite exchange column. The inlet of the suspended fiber ball reaction tank is connected to the outlet of the hair collector through a pipeline, and the outlet of the suspended fiber ball reaction tank is connected to the inlet of the natural zeolite exchange column through a pipeline.

[0008] Furthermore, a suspended fiber ball filling area is provided inside the suspended fiber ball reaction tank, and the suspended fiber ball filling area is filled with lipophilic porous suspended fiber ball fillers.

[0009] Furthermore, for the suspended fiber ball reaction tank, the inlet is located below the suspended fiber ball filling area, and the outlet is located above the suspended fiber ball filling area.

[0010] Furthermore, a backwashing pipeline is also provided on the suspended fiber ball reaction tank. The backwashing water inlet end is located above the suspended fiber ball filling area, and the backwashing water outlet end is located below the suspended fiber ball filling area.

[0011] Furthermore, a natural zeolite filling area is provided inside the natural zeolite exchange column, and the natural zeolite filling area is filled with zeolite particles.

[0012] Furthermore, a top water distribution and collection pipe and a bottom water distribution and collection pipe are provided inside the natural zeolite exchange column. The top water distribution and collection pipe is located above the natural zeolite filling area, and the bottom water distribution and collection pipe is located below the natural zeolite filling area. The inlet is connected to the top water distribution and collection pipe through a pipeline, and the outlet is connected to the bottom water distribution and collection pipe through a pipeline.

[0013] Furthermore, an anti-flushing pipeline is also provided on the natural zeolite exchange column. The anti-flushing water inlet end is connected to the bottom water distribution and collection water pipe, and the anti-flushing water outlet end is connected to the top water distribution and collection water pipe.

[0014] Furthermore, a sodium chloride solution pipeline is also provided on the natural zeolite exchange column. The sodium chloride solution inlet end is connected to the bottom water distribution and collection water pipe, and the sodium chloride solution outlet end is connected to the top water distribution and collection water pipe.

[0015] Furthermore, the water outlet of the natural zeolite exchange column is connected to the qualified water pipeline and the unqualified water pipeline through a common pipeline. An ammonium ion detector and a turbidity detector are installed on the common pipeline. The qualified water outlet valve is installed on the qualified water pipeline, and the unqualified water outlet valve is installed on the unqualified water pipeline.

[0016] Furthermore, an exchange column drain valve is provided at the bottom of the natural zeolite exchange column.

[0017] The hair collector can filter out hair and larger-sized particulate impurities; the suspended fiber ball reaction tank is internally provided with lipophilic and porous suspended fiber ball fillers, which can effectively remove organic matter colloidal agglomerate particles and organic matters such as human exfoliated dander, greatly reducing the organic matter content in the water body. The removal of these organic matters can reduce the input amount of oxidants in the disinfection system; the natural zeolite exchange column adsorbs a small amount of suspended matter in the swimming pool circulating water, and the adsorbate adheres to the micropores of the zeolite particles. Soluble organic small molecules in the swimming pool circulating water are enriched on the micropore surface of the zeolite particles, resulting in adsorption concentration polarization. After the concentration polarization occurs, high-concentration soluble organic small molecules, ammonium ions and residual oxidants in the artificial swimming pool circulating water undergo redox reactions on the micropore surface of the zeolite particles, thereby reducing soluble organic small molecules and ammonium ions; using the traditional technology, the free chlorine concentration in the swimming pool water body needs to be maintained at 0.8 - 1.0 mg / L; using this technology, the free chlorine concentration in the swimming pool water body can be maintained at 0.3 - 0.5 mg / L.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: In this system, a hair collector, a suspended fiber ball reaction tank, and a natural zeolite exchange column are combined to hierarchically treat the circulating water of the swimming pool to solve the core factors caused by human activities during swimming; both the suspended fiber ball reaction tank and the natural zeolite exchange column are equipped with backwashing pipelines for easy cleaning to achieve long-term normal operation; the natural zeolite exchange column is also equipped with a zeolite particle regeneration pipeline, where the zeolite particles react with sodium ions to reduce the concentration of ammonium ions on the microporous surface of the zeolite particles, causing depletion concentration polarization of ammonium ions on the microporous surface of the natural zeolite, and further promoting the oxidation reaction of cyanuric acid (C3H3N3O3) and urea (CO(NH2)2); through the optimized design of pipeline distribution and control, the pipeline utilization rate is improved; this water treatment system is a water treatment system with strong adaptability, low operating cost, and good human perception. The free chlorine concentration in the pool water can be maintained at 0.3 - 0.5 mg / L, and the circulating frequency of the swimming pool circulating water remains unchanged to meet the water treatment requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. is a schematic diagram of an artificial swimming pool water treatment system in the prior art.

[0020] Figure 2 FIG. is a schematic diagram of an artificial swimming pool water treatment system in the present utility model.

[0021] Figure 3 FIG. is a schematic diagram of the pipeline control of the suspended fiber ball reaction tank and the natural zeolite particle exchange column.

[0022] Figure 4 FIG. is an attached drawing of the sanitary requirements for the water quality indicators of an artificial swimming pool.

[0023] Among them,

[0024] 1. Swimming pool, 2. Balance water tank, 3. Make-up water solenoid valve, 4. Liquid level detector, 5. Hair collector, 6. Circulation water pump, 7. Suspended fiber ball reaction tank, 8. Suspended fiber ball packing, 9. Reaction tank inlet valve, 10. Reaction tank outlet valve, 11. Reaction tank flushing valve, 12. Reaction tank drain valve, 13. Reaction tank differential pressure gauge, 14. Natural zeolite exchange column, 15. Zeolite particles, 16. Top water distribution and collection pipe, 17. Bottom water distribution and collection pipe, 18. Exchange column inlet valve, 19. Qualified water outlet valve, 20. Unqualified water outlet valve, 21. Exchange column inlet switching valve, 22. Exchange column flushing switching valve, 23. Exchange column waste water drain valve, 24. NaCl solution inlet valve, 25. Exchange column vent valve, 26. Ammonium ion detector, 27. UV disinfection device, 28. Disinfectant adding device, 29. Heating device, 30. Turbidity detector, 31. Branch A, 32. Branch B, 33. Branch C, 34. Branch D. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] For the convenience of understanding the present utility model, the present utility model will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive.

[0026] Embodiment 1: An artificial swimming pool water treatment system, comprising: a hair collector 5, the hair collector 5 is provided with a water inlet and a water outlet, and further comprising: a suspended fiber ball reaction tank 7 and a natural zeolite exchange column 14, the water inlet of the suspended fiber ball reaction tank 7 is connected to the water outlet of the hair collector 5 through a pipeline, and the water outlet of the suspended fiber ball reaction tank 7 is connected to the water inlet of the natural zeolite exchange column 14 through a pipeline.

[0027] This application is to treat the water in an artificial swimming pool to achieve multiple healthy recycling. The hair collector 5, the suspended fiber ball reaction tank 7 and the natural zeolite exchange column 14 are respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are for the circulation water of the swimming pool. The backwashing of the suspended fiber ball reaction tank 7 and the natural zeolite exchange column 14 is also mentioned in the design of the water treatment system. Flushing water is used in the backwashing, and a sodium chloride solution is also mentioned. It should be noted in the understanding of the technical solution that it will be distinguished in the description of the working process for easy understanding.

[0028] The influence of human activities during swimming is reflected in: the shedding of hair and dandruff, the sweat and oil discharged by human sweat glands, and a small amount of urine, saliva, etc. discharged by the human body.

[0029] The working principle is as follows: The circulating water of the swimming pool first passes through the hair collector 5, and the hair collector 5 can filter out hair and larger-sized particulate impurities; then it enters the suspended fiber ball reaction tank 7. The suspended fiber ball reaction tank 7 is used to remove insoluble organic matter particles and organic matter such as human exfoliated dandruff existing in the form of highly dispersed colloidal suspended matter, so that these organic matters can be effectively removed. The removal of these organic matters can reduce the input of oxidants in the disinfection system; then it enters the natural zeolite exchange column 14. The natural zeolite exchange column 14 utilizes the enrichment of cyanuric acid C3H3N3O3, urea CO(NH2)2 and ammonium ions on the surface of the micropores of natural zeolite to generate adsorption concentration polarization, and improve the oxidation reaction efficiency of calcium hypochlorite in the natural zeolite particle exchange column area.

[0030] This application is an improvement on the artificial swimming pool water treatment system in the prior art. In this system, a hair collector 5, a suspended fiber ball reaction tank 7 and a natural zeolite exchange column 14 are used in combination for hierarchical treatment of the circulating water of the swimming pool to solve the core factors caused by human activities during swimming. Such as Figure 2As shown, the pool water in the swimming pool 1 is collected through the overflow water channel and then converges into the balance pool 2. Together with the makeup water, it enters the circulating pipeline.

[0031] Driven by the circulating water pump 6, it flows through the hair collector 5, the suspended fiber ball reaction tank 7, and the natural zeolite exchange column 14 for treatment. The circulating water of the swimming pool after the above treatment will enter the disinfection system, such as Figure 2 the UV light disinfector 27 and the disinfectant adding device 28 shown in the figure for disinfection treatment. Finally, after the temperature is adjusted by the heat exchanger, it returns to the swimming pool. The heat exchanger can be, for example, Figure 2 the heating device 29 shown in the figure. A liquid level detector 4 is installed on the balance pool 2, and a makeup water solenoid valve 3 is provided on the makeup water pipeline of the balance pool 2. When the liquid level detector 4 detects that the water level is lower than the lower limit value, the makeup water solenoid valve 3 will open for makeup water.

[0032] Example 2: On the basis of Example 1, a suspended fiber ball filling area is provided in the suspended fiber ball reaction tank 7, and the suspended fiber ball filling area is filled with lipophilic porous suspended fiber ball fillers 8; the organic matter particles insoluble in water existing in the form of highly dispersed colloidal suspensions come into contact with the lipophilic porous suspended fiber ball fillers 8, are adsorbed by the lipophilic porous suspended fiber balls and deposited on the surface, and further adsorb organic matter colloidal agglomerated particles and organic matters such as human exfoliated dander, so that these organic matters can be effectively removed. The removal of these organic matters can reduce the input amount of oxidants in the disinfection system; the suspended fiber ball reaction tank 7 filled with lipophilic porous suspended fiber balls has a small flow resistance, low energy consumption, and strong organic matter adsorption ability. A natural zeolite filling area is provided in the natural zeolite exchange column 14, and the natural zeolite filling area is filled with zeolite particles 15. After the artificial swimming pool water body passes through the reaction tank filled with lipophilic porous suspended fiber ball fillers through the circulation system, the organic matter content of the water body is greatly reduced, and then it enters the natural zeolite exchange column 14, the exchange column filled with zeolite particles 15. The zeolite used is natural clinoptilolite, the crystal is in the shape of flakes or plates, and the aggregate is in the shape of radial or hair-like. The above conditions make the natural zeolite have very high strength and will not break under the repeated operations of filtration and backwashing after being filled into the exchange column, and can operate stably for a long time.

[0033] Example 3: On the basis of Example 2, assume that a certain swimming pool is 50 meters long, 21 meters wide, and 1.8 meters deep, and the volume of the swimming pool water body is 1890 cubic meters. Assume two suspended fiber ball reaction tanks 7 with a diameter of 1.7 meters and a height of 3.4 meters; assume six natural zeolite exchange columns 14 with a diameter of 1.2 meters and a height of 3.6 meters.

[0034] The suspended fiber ball reaction tank 7 has an inlet located below the suspended fiber ball filling area and an outlet located above the suspended fiber ball filling area. The reaction tank inlet valve 9 is installed at this inlet, and the reaction tank outlet valve 10 is installed at this outlet. A backwashing pipeline is also provided on the suspended fiber ball reaction tank 7. The backwashing inlet end is located above the suspended fiber ball filling area, and the backwashing outlet end is located below the suspended fiber ball filling area. The reaction tank flushing valve 11 is installed at this backwashing inlet end, and the reaction tank drain valve 12 is installed at this backwashing outlet end. A reaction tank differential pressure gauge 13 is installed on the suspended fiber ball reaction tank 7 to monitor the differential pressure above and below the suspended fiber ball filling area.

[0035] Brief description of the normal operation process of the suspended fiber ball reaction tank 7: Open the reaction tank inlet valve 9 and the reaction tank outlet valve 10, close the reaction tank flushing valve 11 and the reaction tank drain valve 12. The swimming pool circulating water flowing out from the outlet of the hair collector 5 flows upward from bottom to top in the suspended fiber ball reaction tank 7, and the suspended fiber ball filler 8 adsorbs organic matter colloidal agglomerated particles and organic matters such as human exfoliated dander, so that these organic matters can be effectively removed, and then are sent to the next-stage natural zeolite exchange column 14 for further filtration through the reaction tank outlet valve 10. The bottom-in and top-out mode is adopted, and the backwashing operation is simple and easy.

[0036] Brief description of the backwashing operation process of the suspended fiber ball reaction tank 7: When the on-line pressure value measured by the reaction tank differential pressure gauge 13 reaches the set value, open the reaction tank flushing valve 11 and the reaction tank drain valve 12, close the reaction tank inlet valve 9 and the reaction tank outlet valve 10. The flushing water enters the suspended fiber ball reaction tank 7 from the reaction tank flushing valve 11 and flows downward from top to bottom, and the suspended fiber ball filler adsorbing organic matter colloidal agglomerated particles is washed in the reverse direction, so that these organic matters can be effectively removed and then discharged through the reaction tank drain valve 12.

[0037] Inside the natural zeolite exchange column 14, there are a top water distribution and collection pipe 16 and a bottom water distribution and collection pipe 17. The top water distribution and collection pipe 16 is located above the natural zeolite filling area, and the bottom water distribution and collection pipe 17 is located below the natural zeolite filling area. The water inlet is connected to the top water distribution and collection pipe 16 through a pipeline, and the water outlet is connected to the bottom water distribution and collection pipe 17 through a pipeline. Both the water inlet and the water outlet are located above the natural zeolite filling area. The exchange column water inlet valve 18 is installed on the pipeline where the water inlet is located; A backwash pipeline is also provided on the natural zeolite exchange column 14. The backwash water inlet end is connected to the bottom water distribution and collection pipe 17 through a pipeline, and the backwash water outlet end is connected to the top water distribution and collection pipe 16 through a pipeline. The exchange column waste water drain valve 23 is installed on the branch where the backwash water outlet end is located. The exchange column water inlet switching valve 21 is installed on the water inlet pipeline between the exchange column water inlet valve 18 and the branch where the backwash water outlet end is located; A sodium chloride solution pipeline is also provided on the natural zeolite exchange column 14. The sodium chloride solution inlet end is connected to the bottom water distribution and collection pipe 17 through a pipeline, and the sodium chloride solution outlet end is connected to the top water distribution and collection pipe 16 through a pipeline. The NaCl solution inlet valve 24 is installed at the sodium chloride solution inlet end. The exchange column flushing switching valve 22 is located on the pipeline between the NaCl solution inlet valve 24 and the water outlet branch; The water outlet of the natural zeolite exchange column 14 is connected to the qualified water pipeline and the unqualified water pipeline through a common pipeline. An ammonium ion detector 26 and a turbidity detector 30 are installed on the common pipeline. The qualified water outlet valve 19 is installed on the qualified water pipeline, and the unqualified water outlet valve 20 is installed on the unqualified water pipeline; An exchange column drain valve 25 is provided at the bottom of the natural zeolite exchange column 14.

[0038] Both the suspended fiber ball reaction tank 7 and the natural zeolite exchange column 14 are equipped with backwash pipelines for easy cleaning to achieve long-term normal operation; The natural zeolite exchange column 14 is also equipped with a regeneration pipeline for zeolite particles 15. The zeolite particles 15 react with sodium ions to reduce the ammonium ion concentration on the microporous surface of the zeolite particles 15, causing depletion concentration polarization of ammonium ions on the microporous surface of the natural zeolite, and further promoting the oxidation reactions of cyanuric acid C3H3N3O3 and urea CO(NH2)2.

[0039] To improve the pipeline utilization rate, an optimized design of pipeline distribution and control is carried out. Refer to Figure 3It is understood that in the suspended fiber ball reaction tank 7, the reaction tank water inlet valve 9 and the reaction tank drain valve 12 are located on different branches of the connected pipeline, and the reaction tank water outlet valve 10 and the reaction tank flushing valve 11 are also located on different branches of the connected pipeline. A four-way valve is arranged above the natural zeolite exchange column 14, which is respectively connected to the branch A31 where the exchange column water inlet valve 18 is located, the branch B32 where the NaCl solution inlet valve 24 is located, the branch C33 where the exchange column flushing switching valve 22 is located, and the branch D34 where the exchange column water inlet switching valve 21 is located. The branch C33 is connected to the bottom water distribution and collection pipe 17, the branch D34 is connected to the top water distribution and collection pipe 16, and the branch where the exchange column waste water drain valve 23 is located is also connected to the top water distribution and collection pipe 16. The exchange column water inlet switching valve 21 is located between the four-way valve and the branch where the exchange column waste water drain valve 23 is located, and the exchange column flushing switching valve 22 is located between the four-way valve and the water outlet branch.

[0040] Brief description of the forward operation process of the natural zeolite exchange column 14: Open the exchange column water inlet valve 18 and the exchange column water inlet switching valve 21, close the NaCl solution inlet valve 24, the exchange column flushing switching valve 22, the exchange column waste water drain valve 23 and the exchange column vent valve 25, and enter the forward operation state. The swimming pool circulating water flowing out from the water outlet of the suspended fiber ball reaction tank 7 is evenly distributed through the top water distribution and collection pipe 16, then passes through the zeolite particles 15 for filtration. After being collected by the bottom water distribution and collection pipe 17 evenly distributed at the bottom, it is sent back to the top of the column in the reverse direction. The pipeline flowing through the top of the column is equipped with an ammonium ion detector 26 and a turbidity detector 30 to detect the on-line values of turbidity and ammonium ions. When the ammonium ion concentration of the outflow water ≥ 1.5 mg / L, or the suspended solid concentration index ≥ 3 mg / L, the outflow water is regarded as unqualified water. Close the qualified water outlet valve 19, open the unqualified water outlet valve 20, and discharge the unqualified water outlet. The forward operation state ends and enters the reverse flushing and natural zeolite particle regeneration state. On the contrary, open the qualified water outlet valve 19, close the unqualified water outlet valve 20, and let the qualified water outlet flow out.

[0041] Brief description of the backwashing operation process of the natural zeolite exchange column 14: Open the exchange column water inlet valve 18, the exchange column flushing switching valve 22 and the exchange column waste water drain valve 23, close the exchange column water inlet switching valve 21, and enter the backwashing state. The cleaning water is evenly distributed through the bottom water distribution and collection pipe 17, then backflushes through the zeolite particles 15 for flushing. After being collected by the top water distribution and collection pipe 16 evenly distributed at the top, it is sent back to the top of the column in the reverse direction, and the backwashing water is discharged outward through the exchange column waste water drain valve 23 until the system-set backwashing time, then the backwashing stops.

[0042] Brief description of the regeneration operation process of zeolite particles 15 in the natural zeolite exchange column 14: Open the drain valve 25 of the exchange column to drain the stored water in the column. Close the drain valve 25 and the inlet valve 18 of the exchange column. Open the flushing switching valve 22, the waste water drain valve 23 and the NaCl solution inlet valve 24 of the exchange column. After the NaCl solution enters and is evenly distributed through the bottom water distribution and collection pipe 17, it reversely passes through the zeolite particles 15 and is discharged outward through the waste water drain valve 23 of the exchange column. The concentration of sodium chloride solution at the outward discharge outlet is ≥ 300 g / L. Stop introducing the saturated sodium chloride solution and soak for a certain period of time. Open the drain valve 25 of the exchange column to drain all the sodium chloride solution in the column. Reverse the introduction of raw water until the concentration of sodium chloride solution at the outward discharge outlet through the waste water drain valve 23 of the exchange column is lower than 3 mg / L, and the system switches to forward filtration.

[0043] The circulating water body of an artificial swimming pool can achieve the following three functions through the natural zeolite exchange column 14:

[0044] Firstly, similar to the quartz sand filter, it further filters out water suspended solids. The height-diameter ratio of the natural zeolite exchange column 14 is ≥ 3, and the filled natural zeolite particles are controlled at 0.5 - 2 mm, which can complete the adsorption of a small amount of suspended solids in the circulating water body of the artificial swimming pool in the micropores of the natural zeolite. The adsorbed substances adhere to the surface of the natural zeolite micropores.

[0045] Secondly, natural clinoptilolite has a porous structure with a pore diameter of 0.1 - 1.0 nm, a porosity of ≧ 20%, and a specific surface area of ≥ 25 m 2 / g. Soluble organic small molecules in the circulating water body of the artificial swimming pool, such as cyanuric acid C3H3N3O3, urea CO(NH2)2, and ammonium ions, are enriched on the surface of the natural zeolite micropores, resulting in adsorption concentration polarization. After the concentration polarization occurs, high-concentration soluble organic small molecules and ammonium ions appear on the surface of the natural zeolite micropores, and redox reactions occur between them and the residual oxidants in the circulating water body of the artificial swimming pool, thereby reducing the soluble organic small molecules and ammonium ions.

[0046] C3H3N3O3 + Cl2 + H2O → H2CO3 + NH4 + + Cl -

[0047] CO(NH2)2 + Cl2 + H2O → H2CO3 + NH4 + + Cl -

[0048] NH4+ + Cl2 → N2 + H + + Cl -

[0049] The soluble organic small molecules are oxidized by free residual chlorine to form carbonic acid and ammonium ions, and the ammonium ions are further oxidized by free residual chlorine to form nitrogen gas.

[0050] Thirdly, the chemical formula of natural clinoptilolite is Na(AlSi5O 12 )·4H2O. Natural clinoptilolite consists of a super-large negatively charged matrix composed of silicon-oxygen tetrahedrons and aluminum-oxygen tetrahedrons. To maintain neutrality, positively charged cations are bound to the surface of the super-large negatively charged matrix. Under natural conditions, the positively charged cations can be alkali metal and alkaline earth metal ions, such as metal ions like Na, Ca, Sr, Ba, K, Mg, etc. Under aqueous solution conditions, the cations on the surface of the super-large negatively charged matrix can undergo ion exchange with other cations in the aqueous solution. The ion exchange capacity of natural clinoptilolite ≥ 1.2 mmol / g is the maximum capacity for the cations on the surface of the super-large negatively charged matrix to undergo ion exchange with other cations in the aqueous solution under aqueous solution conditions.

[0051] Soaking natural clinoptilolite in sodium chloride solution activates the exchange ability of the cations on the surface of the super-large negatively charged matrix on the one hand, and replaces all the cations on the surface of natural clinoptilolite with sodium ions on the other hand. When the circulating water body of an artificial swimming pool passes through the natural clinoptilolite in the exchange column, the following ion exchange reaction occurs:

[0052] R-Na + NH4 + ⇌R-NH4 + Na +

[0053] Where: R: A super-large negatively charged matrix composed of silicon-oxygen tetrahedrons and aluminum-oxygen tetrahedrons

[0054] When the ion exchange of natural clinoptilolite is saturated, it is regenerated with sodium chloride solution, and the ion exchange reaction:

[0055] R-NH4 + Na + ⇌R-Na + NH4 +

[0056] The exchange reaction of ammonium ions and sodium ions in the zeolite exchange column reduces the ammonium ion concentration on the microporous surface of natural zeolite, that is, ammonium ion depletion occurs on the microporous surface of natural zeolite, and reaction concentration polarization occurs. Ammonium ion depletion concentration polarization appears on the microporous surface of natural zeolite, which further promotes the oxidation reactions of cyanuric acid C3H3N3O3 and urea CO(NH2)2.

[0057] Under the conditions of this embodiment, about 15 kg of calcium hypochlorite is consumed per day on average using the traditional technology, and the free chlorine concentration in the pool water body is maintained at 0.8 - 1.0 mg / L; about 7.5 kg of calcium hypochlorite is consumed per day on average using this technology, and the free chlorine concentration in the pool water body is maintained at 0.3 - 0.5 mg / L. It can be seen that due to the effective adsorption of organic matter by the suspended fiber ball filler, the consumption of calcium hypochlorite is reduced, and the high-efficient oxidation reaction of calcium hypochlorite generated by the natural zeolite particle exchange column makes the free chlorine in the pool water body no longer consumed in large quantities in the pool. Therefore, the free chlorine concentration in the pool water body can be maintained at a low level, reducing the volatilization of chlorine gas in the water body. Not only is the consumption of calcium hypochlorite reduced, but more importantly, the human body feeling is improved. This water treatment system is a water treatment system with strong adaptability, low operating cost, and good human perception. The free chlorine concentration in the pool water body can be maintained at 0.3 - 0.5 mg / L, and the circulation frequency of the swimming pool circulating water remains unchanged to meet the water treatment requirements.

[0058] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

Claims

1. An artificial swimming pool water treatment system, comprising: Hair collector (5). An inlet and an outlet are provided on the hair collector (5). It is characterized in that it further includes: a suspended fiber ball reaction tank (7) and a natural zeolite exchange column (14). The inlet of the suspended fiber ball reaction tank (7) is connected to the outlet of the hair collector (5) through a pipeline, and the outlet of the suspended fiber ball reaction tank (7) is connected to the inlet of the natural zeolite exchange column (14) through a pipeline.

2. The artificial swimming pool water treatment system according to claim 1, wherein, A suspended fiber ball filling area is provided in the suspended fiber ball reaction tank (7), and the suspended fiber ball filling area is filled with lipophilic porous suspended fiber ball fillers (8).

3. The artificial swimming pool water treatment system according to claim 2, characterized in that For the suspended fiber ball reaction tank (7), the inlet is located below the suspended fiber ball filling area, and the outlet is located above the suspended fiber ball filling area.

4. The artificial swimming pool water treatment system according to claim 3, characterized in that, A backwashing pipeline is also provided on the suspended fiber ball reaction tank (7). The backwashing water inlet end is located above the suspended fiber ball filling area, and the backwashing water outlet end is located below the suspended fiber ball filling area.

5. The artificial swimming pool water treatment system according to claim 1, characterized in that, A natural zeolite filling area is provided in the natural zeolite exchange column (14), and the natural zeolite filling area is filled with zeolite particles (15).

6. The artificial swimming pool water treatment system according to claim 5, characterized in that A top water distribution and collection pipe (16) and a bottom water distribution and collection pipe (17) are provided in the natural zeolite exchange column (14). The top water distribution and collection pipe (16) is located above the natural zeolite filling area, and the bottom water distribution and collection pipe (17) is located below the natural zeolite filling area. The inlet is connected to the top water distribution and collection pipe (16) through a pipeline, and the outlet is connected to the bottom water distribution and collection pipe (17) through a pipeline.

7. The artificial swimming pool water treatment system according to claim 6, wherein, A backwashing pipeline is also provided on the natural zeolite exchange column (14). The backwashing water inlet end is connected to the bottom water distribution and collection pipe (17) through a pipeline, and the backwashing water outlet end is connected to the top water distribution and collection pipe (16) through a pipeline.

8. The artificial swimming pool water treatment system according to claim 6, wherein A sodium chloride solution pipeline is also provided on the natural zeolite exchange column (14). The sodium chloride solution inlet end is connected to the bottom water distribution and collection pipe (17) through a pipeline, and the sodium chloride solution outlet end is connected to the top water distribution and collection pipe (16) through a pipeline.

9. The artificial swimming pool water treatment system according to any one of claims 5-8, characterized in that The outlet of the natural zeolite exchange column (14) is connected to a qualified water pipeline and an unqualified water pipeline through a common pipeline. An ammonium ion detector (26) and a turbidity detector (30) are installed on the common pipeline. A qualified water outlet valve (19) is installed on the qualified water pipeline, and an unqualified water outlet valve (20) is installed on the unqualified water pipeline.

10. The artificial swimming pool water treatment system according to any one of claims 1-8, characterized in that, An exchange column drain valve (25) is provided at the bottom of the natural zeolite exchange column (14).

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