Medical pure water treatment system with zero wastewater discharge

Abstract

The utility model belongs to the technical field of water treatment, and particularly discloses a medical pure water treatment system with zero wastewater discharge, which comprises a raw water storage mechanism, a pretreatment system, a primary reverse osmosis system and a secondary reverse osmosis system which are sequentially connected through pipelines, the pretreatment system and the primary reverse osmosis system are connected with the water recovery and storage mechanism; the water purifier further comprises a first pure water storage mechanism and a second pure water storage mechanism, and the first pure water storage mechanism and the second pure water storage mechanism are connected with the first-stage reverse osmosis system and the second-stage reverse osmosis system respectively. The system disclosed by the utility model is integrally simple, is easy to build, and can be used for completely recycling washing concentrated water and reverse osmosis concentrated water generated by each process section of the medical pure water treatment system, so that the waste of water resources is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a medical pure water treatment system with zero wastewater discharge. Background Art

[0002] The medical pure water treatment system is a pure water supply system specially set up inside the hospital. It can provide the hospital with high-quality pure water. It is mainly used in various departments, operating rooms, laboratories and other places in the hospital to ensure the normal operation and sanitary safety of various links such as medical equipment, laboratories and operating rooms.

[0003] The core of the medical pure water treatment system is to purify and cleanse the input water source through a series of process steps. In the process of preparing medical pure water, a large amount of flushing concentrated water and reverse osmosis concentrated water will be produced. However, in most medical pure water treatment systems, only part of the flushing concentrated water and reverse osmosis concentrated water are recycled, which leads to low water recovery efficiency in the system and easily causes waste of water resources. Summary of the invention

[0004] The purpose of the utility model is to provide a medical pure water treatment system with zero wastewater discharge. The system is simple as a whole and easy to build. The flushing concentrated water and reverse osmosis concentrated water generated in each process section of the medical pure water treatment system can be fully recycled, thus avoiding the waste of water resources.

[0005] The technical solution adopted to achieve the purpose of this utility model is:

[0006] A medical pure water treatment system with zero wastewater discharge includes a raw water storage mechanism, a pretreatment system, a primary reverse osmosis system and a secondary reverse osmosis system which are sequentially connected via pipelines; a water recovery storage mechanism, the pretreatment system and the primary reverse osmosis system are both connected to the water recovery storage mechanism; a first pure water storage mechanism and a second pure water storage mechanism, the first pure water storage mechanism and the second pure water storage mechanism are respectively connected to the primary reverse osmosis system and the secondary reverse osmosis system.

[0007] Furthermore, it also includes a nanofiltration membrane system and an ultrafiltration membrane system connected by pipelines, and the nanofiltration membrane system is also connected to the first pure water storage mechanism; it also includes a third pure water storage mechanism, and the ultrafiltration membrane system and the first-level reverse osmosis system are both connected to the third pure water storage mechanism.

[0008] Furthermore, it also includes a hemodialysis pure water system and an EDI system respectively connected to the primary reverse osmosis system and the secondary reverse osmosis system, and the EDI system is also connected to the raw water storage mechanism; it also includes a fourth pure water storage mechanism and a fifth pure water storage mechanism respectively connected to the hemodialysis pure water system and the EDI system.

[0009] Furthermore, it also includes a first high-pressure water pump, a second high-pressure water pump and a third high-pressure water pump; the first high-pressure water pump is arranged between the raw water storage mechanism and the pretreatment system, the second high-pressure water pump is arranged between the pretreatment system and the first-level reverse osmosis system, and the third high-pressure water pump is arranged between the first-level reverse osmosis system and the second-level reverse osmosis system.

[0010] Furthermore, the pretreatment system includes a multi-media filter, an activated carbon filter, a water softener and a security filter which are sequentially connected through pipelines, and the multi-media filter, the activated carbon filter and the water softener are all connected to the water recovery storage mechanism.

[0011] The beneficial effects of the utility model are:

[0012] The utility model stores the backwash wastewater of the multi-media filter, activated carbon filter and water softener in the pretreatment system and the primary reverse osmosis concentrated water of the primary reverse osmosis system in a water recovery storage mechanism for subsequent recycling; and returns the concentrated water of the secondary reverse osmosis system and the concentrated water of the EDI system to the raw water storage mechanism for recycling, thereby avoiding the waste of water resources and achieving zero wastewater discharge of the system. In addition, the utility model combines the nanofiltration membrane system and the ultrafiltration membrane system to process the reverse osmosis concentrated water step by step and utilize it in various departments of the hospital, thus achieving effective utilization of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0014] Figure 1 It is a connection relationship diagram of the system of the utility model.

[0015] 1. Raw water storage mechanism; 2. Pretreatment system; 3. Primary reverse osmosis system; 4. Secondary reverse osmosis system; 5. Water recovery storage mechanism; 6. First pure water storage mechanism; 7. Second pure water storage mechanism; 8. Third pure water storage mechanism; 9. Fourth pure water storage mechanism; 10. Fifth pure water storage mechanism; 11. Nanofiltration membrane system; 12. Ultrafiltration membrane system; 13. Hemodialysis pure water system; 14. EDI system; 15. First high-pressure water pump; 16. Second high-pressure water pump; 17. Third high-pressure water pump;

[0016] 201. Multi-media filter; 202. Activated carbon filter; 20. Water softener; 204. Security filter. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figure 1 As shown, a medical pure water treatment system with zero wastewater discharge includes a raw water storage mechanism 1, a pretreatment system 2, a primary reverse osmosis system 3 and a secondary reverse osmosis system 4 which are sequentially connected by pipelines; it also includes a water recovery storage mechanism 5, and the pretreatment system 2 and the primary reverse osmosis system 3 are both connected to the water recovery storage mechanism 5; it also includes a first pure water storage mechanism 6 and a second pure water storage mechanism 7, and the first pure water storage mechanism 6 and the second pure water storage mechanism 7 are respectively connected to the primary reverse osmosis system 3 and the secondary reverse osmosis system 4.

[0019] The raw water storage mechanism 1 can store tap water and secondary reverse osmosis concentrated water. The treatment method of the pretreatment system 2 is the pretreatment method in the existing common water treatment methods, which may include multi-media filtration, activated carbon filtration and softening filtration, etc., which can be selected according to actual needs. The pretreatment system 2 is mainly used to remove most of the impurities and ions in the water, reduce the load of the purified water equipment, and avoid clogging of components such as filter elements and membranes, thereby improving the processing efficiency of the equipment and extending the service life of the equipment; it can also remove suspended matter, organic matter and soluble ions in the water, thereby ensuring the quality and stability of purified water. The raw water storage mechanism 1, the water recovery storage mechanism 5, the first pure water storage mechanism 6 and the second pure water storage mechanism 7 are all devices for storing water sources, which can be a pool or a water tank.

[0020] In one embodiment of the utility model, the pretreatment system 2 includes a multi-media filter 201, an activated carbon filter 202, a water softener 203 and a security filter 204 which are connected in sequence through pipelines, and the multi-media filter 201, the activated carbon filter 202 and the water softener 203 are all connected to the water recovery storage mechanism 5. The multi-media filter 201, the activated carbon filter 202, the water softener 203 and the security filter 204 cooperate as the pretreatment system 2 to improve water quality, equipment protection and energy saving and consumption reduction, and ensure the efficient, stable and safe operation of the water treatment system to meet various water needs. Specifically, the multi-media filter 201 can effectively remove impurities such as suspended matter, colloids, organic matter and active chlorine in the water, reduce the turbidity of the water, and provide good water inlet conditions for subsequent treatment equipment. The activated carbon filter 202 can further remove odor, discoloration and trace organic matter in the water, and improve the quality and use effect of the water through the adsorption of activated carbon. The water softener 203 can reduce the hardness of water and prevent scale from being deposited in the water pipes by separating calcium and magnesium ions in the water, thereby extending the service life of the devices in the system. The security filter 204 is arranged after the multi-media pre-treatment filtration and before the reverse osmosis system to filter out fine substances such as tiny quartz sand and activated carbon particles after the multi-media filtration to ensure the water quality filtration accuracy and protect the membrane elements from being damaged by large particles. The backwash wastewater of the multi-media filter 201, the activated carbon filter 202 and the water softener 203 in the pre-treatment system 2 is discharged to the water recovery storage mechanism 5.

[0021] In the present invention, the primary reverse osmosis system 3 and the secondary reverse osmosis system 4 are mainly used to remove impurities in water and improve water purity, and the secondary reverse osmosis system 4 has higher treatment efficiency and better water quality improvement effect. The primary reverse osmosis system 3 and the secondary reverse osmosis system 4 are both common systems in the prior art, such as the primary reverse osmosis unit and the secondary reverse osmosis unit disclosed in the patent with publication number CN109019997A.

[0022] The primary reverse osmosis system 3 can only separate a small amount of pure water, and the wastewater with a higher concentration will be discharged to the water recovery storage mechanism 5. The pure water produced by the primary reverse osmosis system 3 is stored in the first pure water storage mechanism 6. The pure water in the first pure water storage mechanism 6 is used as primary cleaning water, mainly used in the supply room, endoscopy center, dentistry, DSA and instrument cleaning.

[0023] The secondary reverse osmosis system 4 includes two-stage reverse osmosis membranes, which can not only further remove impurities in the water, but also separate more pure water, while reducing the amount of wastewater discharged. The pure water produced by the secondary reverse osmosis system 4 is stored in the second pure water storage mechanism 7. The pure water in the second pure water storage mechanism 7 is used as secondary cleaning water and is mainly used in the disinfection supply center.

[0024] The water recovery storage mechanism 5 is used to store the backwash wastewater of the multi-media filter 201, the activated carbon filter 202 and the water softener 203 in the pretreatment system 2 and the primary reverse osmosis concentrated water of the primary reverse osmosis system 3. The wastewater in the water recovery storage mechanism 5 can be recycled by particle bed filtration technology, membrane separation technology or supernatant recovery, and can be sent to the raw water storage mechanism 1 for circulation.

[0025] In the utility model, it also includes a nanofiltration membrane system 11 and an ultrafiltration membrane system 12 connected by pipelines, and the nanofiltration membrane system 11 is also connected to the first pure water storage mechanism 6; it also includes a third pure water storage mechanism 8, and the ultrafiltration membrane system 12 and the primary reverse osmosis system 3 are both connected to the third pure water storage mechanism 8.

[0026] The nanofiltration membrane system 11 and the ultrafiltration membrane system 12 in the utility model are both common treatment systems in the prior art, such as the nanofiltration treatment system and ultrafiltration treatment system disclosed in the patent publication number CN116621396A. The third pure water storage mechanism 8 is a device for storing water sources, which can be a pool or a water tank.

[0027] The nanofiltration membrane system 11 can effectively separate suspended matter or floating matter in the mixed liquid, such as bacteria, viruses and particulate matter, to achieve water separation and purification. The utility model can prepare high-purity water through the nanofiltration membrane, and remove harmful substances in sewage at the same time. The pure water produced by the nanofiltration membrane system 11 in the utility model is stored in the first pure water storage mechanism 6. The pure water in the first pure water storage mechanism 6 is used as primary cleaning water, and is mainly used in the supply room, endoscopy center, dentistry, DSA and instrument cleaning.

[0028] The pore size of the ultrafiltration membrane in the ultrafiltration membrane system 12 is at the micron level, which can effectively block the entry of suspended matter, particles, bacteria, viruses and other tiny particles in the water, and improve the water purification effect. The pure water produced by the ultrafiltration membrane system 12 in the utility model is stored in the third pure water storage mechanism 8, and the pure water in the third pure water storage mechanism 8 is used as flushing water, which is mainly used in operating rooms and obstetrics.

[0029] In the utility model, it also includes a hemodialysis pure water system 13 and an EDI system 14 respectively connected to the primary reverse osmosis system 3 and the secondary reverse osmosis system 4, and the EDI system 14 is also connected to the raw water storage mechanism 1; it also includes a fourth pure water storage mechanism 9 and a fifth pure water storage mechanism 10 respectively connected to the hemodialysis pure water system 13 and the EDI system 14.

[0030] The hemodialysis pure water system 13 in the utility model is mainly to ensure that high-quality water without sterility, heat source, allergen and harmful chemical substances is provided for the hemodialysis process. The pure water produced by the hemodialysis pure water system 13 in the utility model is stored in the fourth pure water storage mechanism 9. The pure water in the fourth pure water storage mechanism 9 is used as dialysis water and is mainly used in the hemodialysis center. The main function of the hemodialysis pure water system 13 of the utility model is disinfection. The specific disinfection method can adopt the existing hemodialysis pure water disinfection treatment method, such as the thermal disinfection system disclosed in the patent with the publication number CN213738680U. The raw water passes through the multi-media filter 201 to remove the suspended particles and colloidal substances of large and medium molecules in the water. The activated carbon filter 202 can adsorb disinfectants, bacteria, viruses and organic matter in the water, remove odor and residual chlorine, and the water softener 203 removes metal ions such as calcium and magnesium in the water through ion exchange resin to soften the water quality. Then, the primary reverse osmosis system 3 intercepts ions, organic matter and microorganisms in the water to produce high-purity water. The pore size design of the reverse osmosis membrane ensures that only pure water can pass through, effectively removing most of the pollutants in the raw water. Finally, the hemodialysis pure water system 13 is used to disinfect and kill residual microorganisms to ensure the hygienic safety of hemodialysis water. The water after the above precise and effective treatment meets the high-quality water standards required for hemodialysis as hemodialysis water, ensuring that the water used in the hemodialysis process is safe and pure, thereby ensuring the treatment effect and life safety of the patient.

[0031] The EDI system 14 in the utility model is a continuous electric desalination system, which scientifically integrates electrodialysis technology and ion exchange technology. Through the selective permeation of cations and anions by cation and anion membranes and the exchange of ions in water by ion exchange resins, the directional migration of ions in water is achieved under the action of an electric field, thereby achieving deep purification and desalination of water. The EDI system 14 is a common continuous electric desalination system in the prior art, such as the EDI water treatment system disclosed in the patent with publication number CN109019997A. The pure water produced by the EDI system 14 in the utility model is stored in the fifth pure water storage mechanism 10. The pure water in the fifth pure water storage mechanism 10 is used as test water, mainly used for tests in various departments of the hospital, such as pathological tests and emergency tests. The EDI system 14 is arranged after the secondary reverse osmosis system 4, and the pure water produced in the secondary reverse osmosis system can be desalinated for a second time, effectively removing trace ions in the secondary reverse osmosis water to meet the high standard requirements for medical pure water. The reverse osmosis concentrated water of the EDI system 14 flows back to the raw water storage mechanism 1.

[0032] In the utility model, it also includes a first high-pressure water pump 15, a second high-pressure water pump 16 and a third high-pressure water pump 17; the first high-pressure water pump 15 is arranged between the raw water storage mechanism 1 and the pretreatment system 2, the second high-pressure water pump 16 is arranged between the pretreatment system 2 and the primary reverse osmosis system 3, and the third high-pressure water pump 17 is arranged between the primary reverse osmosis system 3 and the secondary reverse osmosis system 4.

[0033] The main function of the first high-pressure water pump 15 is to pump water and send the water in the raw water storage mechanism 1 to the pretreatment system 2. The main functions of the second high-pressure water pump 16 and the third high-pressure water pump 17 are to provide pressure difference power for the water quality separation of the reverse osmosis membranes in the primary reverse osmosis system 3 and the secondary reverse osmosis system 4, respectively. The micropores on the surface of the reverse osmosis membrane are small, and the high-pressure water pump can generate enough pressure to push the pretreated water through the reverse osmosis membrane to achieve effective separation of pure water and concentrated water.

[0034] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific implementation method of the utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions and improvements made within the scope of the utility model should be included in the protection scope of the utility model.

Claims

1. A medical pure water treatment system with zero wastewater discharge, It is characterized in that The invention comprises a raw water storage mechanism (1), a pretreatment system (2), a primary reverse osmosis system (3) and a secondary reverse osmosis system (4) which are connected in sequence through pipelines; a water recovery storage mechanism (5), wherein the pretreatment system (2) and the primary reverse osmosis system (3) are both connected to the water recovery storage mechanism (5); and a first pure water storage mechanism (6) and a second pure water storage mechanism (7), wherein the first pure water storage mechanism (6) and the second pure water storage mechanism (7) are respectively connected to the primary reverse osmosis system (3) and the secondary reverse osmosis system (4).

2. The medical pure water treatment system with zero wastewater discharge according to claim 1, It is characterized in that It also includes a nanofiltration membrane system (11) and an ultrafiltration membrane system (12) connected by a pipeline, and the nanofiltration membrane system (11) is also connected to the first pure water storage mechanism (6); it also includes a third pure water storage mechanism (8), and the ultrafiltration membrane system (12) and the primary reverse osmosis system (3) are both connected to the third pure water storage mechanism (8).

3. The medical pure water treatment system with zero wastewater discharge according to claim 1 or 2, It is characterized in that It also includes a hemodialysis pure water system (13) and an EDI system (14) respectively connected to the primary reverse osmosis system (3) and the secondary reverse osmosis system (4), and the EDI system (14) is also connected to the raw water storage mechanism (1); it also includes a fourth pure water storage mechanism (9) and a fifth pure water storage mechanism (10) respectively connected to the hemodialysis pure water system (13) and the EDI system (14).

4. The medical pure water treatment system with zero wastewater discharge according to claim 1 or 2, It is characterized in that The invention also comprises a first high-pressure water pump (15), a second high-pressure water pump (16) and a third high-pressure water pump (17); the first high-pressure water pump (15) is arranged between the raw water storage mechanism (1) and the pretreatment system (2), the second high-pressure water pump (16) is arranged between the pretreatment system (2) and the primary reverse osmosis system (3), and the third high-pressure water pump (17) is arranged between the primary reverse osmosis system (3) and the secondary reverse osmosis system (4).

5. The medical pure water treatment system with zero wastewater discharge according to claim 3, It is characterized in that The invention also comprises a first high-pressure water pump (15), a second high-pressure water pump (16) and a third high-pressure water pump (17); the first high-pressure water pump (15) is arranged between the raw water storage mechanism (1) and the pretreatment system (2), the second high-pressure water pump (16) is arranged between the pretreatment system (2) and the primary reverse osmosis system (3), and the third high-pressure water pump (17) is arranged between the primary reverse osmosis system (3) and the secondary reverse osmosis system (4).

6. The medical pure water treatment system with zero wastewater discharge according to claim 1, 2 or 5, It is characterized in that The pretreatment system (2) comprises a multi-media filter (201), an activated carbon filter (202), a water softener (203) and a security filter (204) which are sequentially connected via pipelines, and the multi-media filter (201), the activated carbon filter (202) and the water softener (203) are all connected to a water recovery storage mechanism (5).

7. The medical pure water treatment system with zero wastewater discharge according to claim 3, It is characterized in that The pretreatment system (2) comprises a multi-media filter (201), an activated carbon filter (202), a water softener (203) and a security filter (204) which are sequentially connected via pipelines, and the multi-media filter (201), the activated carbon filter (202) and the water softener (203) are all connected to a water recovery storage mechanism (5).

8. The medical pure water treatment system with zero wastewater discharge according to claim 4, It is characterized in that The pretreatment system (2) comprises a multi-media filter (201), an activated carbon filter (202), a water softener (203) and a security filter (204) which are sequentially connected via pipelines, and the multi-media filter (201), the activated carbon filter (202) and the water softener (203) are all connected to a water recovery storage mechanism (5).

Images