Hospital central centralized multi-quality water supply system

Abstract

The embodiment of the application provides a hospital central centralized multi-quality water supply system, and relates to the technical field of medical water treatment. The hospital central centralized multi-quality water supply system comprises a central water treatment system, the central water treatment system comprises a basic pure water supply system, a hemodialysis water supply system, an inspection water supply system and a distribution system, the basic pure water supply system adopts a primary reverse osmosis process to prepare basic pure water, is used for supplying cleaning water and drinking pure water, the hemodialysis water supply system is connected with a water outlet end of the basic pure water supply system through a pipeline, and adopts a double-stage reverse osmosis process to further process, to provide direct supply type high-purity water for a hemodialysis department. Through central water preparation, multi-quality water supply and multi-stage deep treatment process, in combination with equipment redundancy, heat disinfection circulation and wastewater graded recycling, the high-quality supply of medical water, continuous safe operation and water saving and emission reduction are realized, and the contradiction between high-standard water demand and efficient water resource utilization is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical water treatment, in particular to a hospital central centralized multi-quality water supply system. BACKGROUND

[0002] With the continuous improvement of medical level in China, the requirements of hospitals for water quality, operation efficiency and management intensification are increasing. However, due to the relatively lagging domestic water treatment core technology, most hospitals still generally adopt the single department decentralized water production mode, each department independently configures water production equipment, mainly relying on imported water treatment units or traditional distilled water machines. Although the imported equipment has advanced technology and stable water quality, it has problems such as high equipment procurement cost, dependence on imported consumables, high maintenance cost, etc., which brings heavy economic burden to hospitals; while the distilled water machine has lower initial investment, but the technology is backward, the energy consumption is high, the water quality fluctuates greatly, and it is difficult to meet the strict requirements of modern medicine for high-purity water, which has safety hazards.

[0003] More prominent is that in a comprehensive hospital, there are many departments involving water use, and a large number of decentralized water production equipment not only occupies valuable medical space, but also leads to decentralized equipment management and complex operation and maintenance. On the one hand, different equipment consumables are various and frequently replaced, significantly increasing the cost of consumables; on the other hand, daily inspection and maintenance rely on a large number of logistics or medical staff, and the labor cost is high, in addition, the traditional "special water special use" decentralized water production mode has low water resource utilization rate, and the raw water production rate is generally less than 50%, a large amount of concentrated water is directly discharged, causing serious waste of water resources and pressure on sewage treatment, and high water and electricity consumption, which is contrary to the development direction of green hospital construction and energy saving.

[0004] Therefore, the prior art has obvious defects in cost control, space utilization, water quality guarantee, operation and maintenance management and environmental protection and energy saving. SUMMARY

[0005] According to the hospital central centralized multi-quality water supply system of the embodiment of the present application, the central water treatment system includes a basic pure water supply system, a hemodialysis water supply system, an inspection water supply system and a distribution system, the basic pure water supply system adopts a one-stage reverse osmosis process to prepare basic pure water for supplying cleaning water and drinking pure water, the hemodialysis water supply system is connected with the water outlet end of the basic pure water supply system through a pipeline and adopts a two-stage reverse osmosis process for further treatment to provide direct supply type high-purity water for hemodialysis departments, the inspection water supply system is connected with the water outlet end of the hemodialysis water supply system through a pipeline and integrates a two-stage reverse osmosis and an EDI ultra-pure water treatment unit to provide ultra-pure water for inspection departments, and the distribution system respectively delivers the basic pure water, the hemodialysis water and the inspection ultra-pure water to each terminal water point to realize central centralized water production and multi-quality zoned water supply.

[0006] Further, the base pure water supply system comprises two groups of water treatment modules with the same structure, each group of water treatment modules comprises a raw water pump, the water inlet of the raw water pump is connected with the water outlet of the raw water tank, the water outlet of the raw water pump is connected with the water inlet pipe of the quartz sand filter, the water outlet of the quartz sand filter is connected with the water inlet pipe of the activated carbon filter, the water outlet of the activated carbon filter is connected with the water inlet pipe of the softener filter, the water outlet of the softener filter is connected with the water inlet pipe of the security filter, the softener filter is connected with a salt storage tank, the water outlet of the security filter of one group of water treatment modules is connected with the water inlet of the first soft water tank, and the water outlet of the security filter of the other group of water treatment modules is connected with the water inlet of the second soft water tank.

[0007] Further, the water outlet of the second soft water tank is connected with two parallel high-pressure pumps, the high-pressure pumps supply water to two groups of first-level reverse osmosis membrane groups respectively, the water outlet of the first group of first-level reverse osmosis membrane groups is respectively delivered to the direct drinking water tank, the flushing and cleaning water tank and the first intermediate water tank through water pipelines, and the water outlet of the second group of first-level reverse osmosis membrane groups is connected in parallel into the water pipeline of the first group, so as to realize double-line water production and mutual standby.

[0008] Further, the hemodialysis water supply system comprises two parallel high-pressure pumps, the water inlets of the high-pressure pumps are connected with the water outlet of the first intermediate water tank, and the water outlets of the high-pressure pumps are respectively connected with the water inlets of two groups of second-level reverse osmosis membrane groups, the water outlet of the first group of second-level reverse osmosis membrane groups is respectively delivered into the second-level pure water tank and the second intermediate water tank through water pipelines, and the water outlet of the second group of second-level reverse osmosis membrane groups is connected in parallel into the water pipeline of the first group, so as to realize double-system operation.

[0009] Further, the test water supply system comprises two parallel booster pumps, the water inlets of the booster pumps are connected with the water outlet of the second intermediate water tank, and the water outlets of the booster pumps are respectively connected with the water inlets of two groups of EDI devices, the water outlet of the first group of EDI devices is delivered into the test water tank through a water pipeline, and the water outlet of the second group of EDI devices is connected in parallel into the water pipeline of the first group, so as to realize double-path preparation of ultrapure water.

[0010] Further, the first soft water tank, the second soft water tank, the direct drinking water tank, the flushing and cleaning water tank, the first intermediate water tank, the second-level pure water tank, the second intermediate water tank and the test water tank are all provided with immersion type ultraviolet lamps.

[0011] Further, the distribution system comprises a second-level pure water distribution module and a test water distribution module, the second-level pure water distribution module is provided with multiple groups, and the multiple groups of second-level pure water distribution modules respectively distribute the water in the first soft water tank, the direct drinking water tank, the flushing and cleaning water tank and the second-level pure water tank, wherein the water outlet of the direct drinking water tank is provided with two groups of second-level pure water distribution modules, and the test water distribution module is used for delivering the ultrapure water in the test water tank to a terminal of a test department.

[0012] Further, each group of the secondary pure water distribution module comprises an ultraviolet sterilizer, a variable frequency constant pressure water supply pump, a microporous filter and an ozone generator. The variable frequency constant pressure water supply pump draws water from the corresponding water tank. The water flows through the ultraviolet sterilizer and the microporous filter and is then delivered to each water point. An ozone generator is arranged on the main pipeline leading to the water point to inject low-concentration ozone into the system.

[0013] Further, the test water distribution module comprises another group of variable frequency constant pressure water supply pumps, ultraviolet sterilizers, microporous filters, ozone generators and polishing mixed beds. The water flow from the test water tank is pressurized by the variable frequency constant pressure water supply pump, then passes through the polishing mixed bed, the ultraviolet sterilizer and the microporous filter in sequence, and is delivered to the terminal of the clinical laboratory after treatment. Another ozone generator is arranged on the main pipeline.

[0014] Further, the central water treatment system comprises a thermal disinfection function unit and a wastewater recovery unit.

[0015] The thermal disinfection function unit drives hot water to form a closed loop between the distribution pipe network and the water storage tank by controlling the variable frequency constant pressure water supply pump, performs pasteurization on the distribution system, and sets the disinfection cycle and duration according to the water consumption characteristics of each department by the PLC controller. The water storage tank comprises at least one of a direct drinking water tank, a flushing and cleaning water tank, an intermediate water tank, a secondary pure water tank, an intermediate water tank and a test water tank.

[0016] The input end of the wastewater recovery unit is connected to the concentrated water discharge port of the primary reverse osmosis membrane group and the secondary reverse osmosis membrane group, and is used to collect low-salt concentrated water generated during water production as recoverable wastewater.

[0017] The beneficial effects of the present application are: adopting the central water production and quality water supply mode, the raw water is concentrated and treated by multi-stage filtration, softening, primary reverse osmosis, double-stage reverse osmosis and EDI ultra-pure water treatment, and high-quality water meeting different purposes such as cleaning, drinking, hemodialysis and testing is prepared respectively, the problems of repeated configuration and water quality fluctuation of traditional decentralized water machines are avoided, the water supply safety and management efficiency are improved, the water production and supply modules in double-line parallel connection are set to realize redundant operation of key equipment, to ensure continuous and uninterrupted clinical water supply, meanwhile, the overflow type ultraviolet sterilizer, microporous filter and ozone generator are integrated in the distribution system, and the variable frequency constant pressure water supply pump is used to drive hot water to form a closed loop circulation between the pipe network and the direct drinking water tank, the secondary pure water tank and the test water tank, to realize pasteurization disinfection, effectively inhibit the growth of biofilm, and ensure that the long-term water supply microorganisms meet the standards, the low-salt-concentration water produced by the primary and secondary reverse osmosis is recovered for flushing, washing and greening through the wastewater recovery unit, to realize the cascade utilization of water resources, and the high-salt wastewater produced by softening is directly discharged into the sewage treatment system, so that the high-quality water output is ensured, the wastewater discharge is greatly reduced, the dual goals of water saving and energy saving and green operation are realized, and the contradiction between the high-standard water demand and the efficient use of water resources in the medical scene is effectively solved.

[0018] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following and the description or be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 is a whole schematic diagram of the central water treatment system according to the embodiments of the present application;

[0021] Figure 2 is a flow chart of the central water treatment system according to the embodiments of the present application;

[0022] Figure 3 is a schematic diagram of the basic pure water supply system according to the embodiments of the present application;

[0023] Figure 4 is a schematic diagram of the hemodialysis water supply system according to the embodiments of the present application;

[0024] Figure 5 is a schematic diagram of the test water supply system according to the embodiments of the present application;

[0025] Figure 6 is a schematic diagram of a softening water tank water source distribution system according to an embodiment of the present application;

[0026] Figure 7 is a schematic diagram of a direct drinking water tank water source distribution system according to an embodiment of the present application;

[0027] Figure 8 is a schematic diagram of a flushing cleaning water tank water source distribution system according to an embodiment of the present application;

[0028] Figure 9 is a schematic diagram of a secondary pure water tank water source distribution system according to an embodiment of the present application;

[0029] Figure 10 is a schematic diagram of a test water tank water source distribution system according to an embodiment of the present application;

[0030] Figure 11 is a detail display diagram thereof according to an embodiment of the present application Figure 2 ;

[0031] Figure 12 is a detail display diagram thereof according to an embodiment of the present application Figure 2 ;

[0032] Figure 13 is a detail display diagram thereof according to an embodiment of the present application Figure 2 ;

[0033] Figure 14 is a detail display diagram thereof according to an embodiment of the present application Figure 2 ;

[0034] Figure 15 is a detail display diagram thereof according to an embodiment of the present application Figure 2 ;

[0035] Icon: 1, basic pure water supply system; 11, raw water tank; 12, raw water pump; 13, quartz sand filter; 14, activated carbon filter; 15, softener filter; 16, salt storage device; 17, security filter; 18, softening water tank one; 19, softening water tank two; 191, high pressure pump one; 192, first reverse osmosis membrane group; 193, direct drinking water tank; 194, flushing cleaning water tank; 195, intermediate water tank one; 2, hemodialysis water supply system; 21, high pressure pump two; 22, secondary reverse osmosis membrane group; 23, secondary pure water tank; 24, intermediate water tank two; 3, test water supply system; 31, booster pump; 32, EDI equipment; 33, test water tank; 4, overflow type ultraviolet sterilizer; 5, variable frequency constant pressure water supply pump; 6, microporous filter; 7, ozone generator; 8, polishing mixed bed. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0037] A hospital central centralized multi-quality water supply system according to an embodiment of the present application is described below with reference to the drawings.

[0038] As shown in the drawings, Figures 1-15 A hospital central centralized multi-quality water supply system according to an embodiment of the present application comprises a central water treatment system, which is composed of a basic pure water supply system 1, a hemodialysis water supply system 2, a laboratory water supply system 3 and a distribution system, and adopts the design concept of “centralized water production and multi-quality water supply in different areas” to realize integrated production and delivery of various high-quality medical water from raw water.

[0039] As shown in the drawings, Figure 2 and Figure 3 Raw water first enters a raw water tank 11 and is pretreated by two groups of parallel water treatment modules. Each group of water treatment modules comprises, in sequence, a raw water pump 12, a quartz sand filter 13, an activated carbon filter 14, a softener filter 15 and a security filter 17. The raw water pump 12 pressurizes the raw water, which then passes through the quartz sand filter 13 to remove suspended solids, the activated carbon filter 14 to adsorb residual chlorine and organic matter, and the softener filter 15 to reduce water hardness and prevent subsequent reverse osmosis membrane fouling. The softener filter 15 is bypass connected to a salt storage tank 16 for periodic resin regeneration. After being further intercepted by the security filter 17, the produced water enters a softened water tank I 18 and a softened water tank II 19.

[0040] The produced water from the softened water tank II 19 is pressurized by two parallel high-pressure pumps I 191 and then enters two groups of primary reverse osmosis membrane groups 192. The first group of primary reverse osmosis membrane groups 192 desalts the water, and the produced water is delivered to a direct drinking water tank 193, a flushing and cleaning water tank 194 and an intermediate water tank I 195 through water delivery pipelines for providing drinking water and cleaning water. The second group of primary reverse osmosis membrane groups 192 has the same structure, and its produced water is connected in parallel to the water delivery pipelines of the first group to realize double-line parallel water production. When one group fails or needs maintenance, the other group can operate independently to ensure continuous supply of basic pure water.

[0041] As shown in the drawings, Figure 4As shown, the intermediate water tank one 195 stores the first reverse osmosis water as the water source for hemodialysis, and the system is configured with two parallel high-pressure pumps two 21, the water inlet of which is connected to the water outlet of the intermediate water tank one 195. The high-pressure pump two 21 pressurizes the water and sends it to two groups of secondary reverse osmosis membrane groups 22 for deep desalination treatment to ensure that the water quality meets the hemodialysis standard. The water produced by the first group of secondary reverse osmosis membrane groups 22 enters the secondary pure water tank 23 and the intermediate water tank two 24 through the water pipeline. The water produced by the second group of secondary reverse osmosis membrane groups 22 is connected to the same water pipeline in parallel to realize dual-system backup operation and ensure the continuous direct supply of high-purity water to the hemodialysis department.

[0042] As shown in Figure 5 , the high-purity water in the intermediate water tank two 24 is used as the pretreatment water source for testing ultrapure water. Two parallel booster pumps 31 pressurize the water and deliver it to two groups of EDI devices 32, respectively. Through the electric field effect, the residual ions in the water are further removed to prepare ultrapure water with a resistivity of ≥18.2 MΩ·cm. The water produced by the first group of EDI devices 32 enters the testing water tank 33 for storage. The water produced by the second group of EDI devices 32 is connected to the same water pipeline in parallel to realize dual-path preparation and mutual backup, ensuring the high stability and continuity of the water used in the testing department.

[0043] Among them, the EDI device 32 is an electro-deionization device, which is an advanced water treatment technology that combines ion exchange resin, ion exchange membrane and electric field driving technology. It is used to continuously prepare high-purity water or ultrapure water without chemical regeneration.

[0044] As shown in Figure 2 , to prevent the growth of microorganisms during water storage, the softening water tank one 18, the softening water tank two 19, the direct drinking water tank 193, the flushing and cleaning water tank 194, the intermediate water tank one 195, the secondary pure water tank 23, the intermediate water tank two 24 and the testing water tank 33 are all equipped with immersion type ultraviolet lamps, which can be turned on regularly or continuously to inhibit bacterial reproduction.

[0045] As shown in Figures 6-10 , the distribution system includes multiple groups of secondary pure water distribution modules and one group of testing water distribution modules. The secondary pure water distribution modules correspond to the softening water tank one 18, the direct drinking water tank 193, the flushing and cleaning water tank 194 and the secondary pure water tank 23, respectively, for water distribution. Among them, the direct drinking water tank 193 is configured with two groups of secondary pure water distribution modules to meet the large water demand during peak periods.

[0046] Referring to Figure 6Each group of secondary pure water distribution module comprises: flow type ultraviolet sterilizer 4, variable frequency constant pressure water supply pump 5, microporous filter 6 and ozone generator 7. When in operation, the variable frequency constant pressure water supply pump 5 draws water from the corresponding water tank, the water flow first passes through the flow type ultraviolet sterilizer 4 for instantaneous sterilization, then passes through the microporous filter 6 to intercept particulate matter, and finally is delivered to each terminal water point through the main pipeline. The ozone generator 7 arranged on the main pipeline can periodically inject low-concentration ozone 0.2-1.0 mg / L into the water, so as to realize online disinfection and continuous bacterium inhibition of the pipe network.

[0047] Reference Figure 10 As shown in the figure, the test water distribution module is used for delivering ultrapure water in the test water tank 33 to the terminal of the clinical laboratory, and comprises: variable frequency constant pressure water supply pump 5, polishing mixed bed 8, flow type ultraviolet sterilizer 4, microporous filter 6 and another ozone generator 7. The ultrapure water from the test water tank 33 is pressurized by the variable frequency constant pressure water supply pump 5, and then sequentially passes through the polishing mixed bed 8, the flow type ultraviolet sterilizer 4 and the microporous filter 6, and is finally delivered to the test equipment. The polishing mixed bed 8 further removes trace ions, the flow type ultraviolet sterilizer 4 inactivates microorganisms, and the microporous filter 6 ensures that the particulate matter meets the standard. The ozone generator 7 arranged on the main pipeline is used to maintain the stability of the microorganism level of the pipe network.

[0048] In order to guarantee the microorganism safety of the distribution pipe network during long-term operation, the system is configured with a hot disinfection function unit. When the system enters the disinfection mode, the PLC controller automatically closes the valves of each water point, starts the variable frequency constant pressure water supply pump 5, and drives the heated pure water to form a closed loop circulation between the distribution pipe network and the water storage tanks such as the direct drinking water tank 193, the secondary pure water tank 23, the test water tank 33 and the like. The temperature of the hot water is maintained at 80-85℃ by the heating device, and the circulation lasts for 30-60 minutes to complete the pasteurization. The PLC controller can set different disinfection cycles and durations according to the water consumption frequency and risk level of different departments, such as daily disinfection of the hemodialysis system and weekly disinfection of the test system. After disinfection, the system automatically returns to the normal water supply state.

[0049] The system is provided with a wastewater recovery unit for realizing the cascade utilization of water resources. The input end of the wastewater recovery unit is connected with the concentrated water discharge port of the first reverse osmosis membrane group 192 and the secondary reverse osmosis membrane group 22, and collects the low-salt-concentration wastewater generated during the water production process. The part of the wastewater is collected by the pipeline and then delivered to the hospital miscellaneous water pipe network for toilet flushing, ground washing or greening irrigation, so as to improve the water resource utilization rate. The high-salt-concentration wastewater generated during the regeneration process of the softener filter 15 is discharged into the hospital sewage treatment system through a special pipeline, so as to avoid pollution to the environment.

[0050] The distribution system adopts a sanitary supply system, the tank body and the distribution pipeline use SUS304 or above sanitary material, all pumps and valves adopt double backup, emergency uninterrupted water supply can be realized, the distribution pipeline adopts welded sanitary pipeline, avoiding water leakage after aging of the sealing ring of the crimped pipeline, leading to system scrap.

[0051] In summary, after the raw water enters the raw water tank 11, it is treated by two groups of parallel pretreatment modules, raw water pump 12, quartz sand filter 13, activated carbon filter 14, softener filter 15, and security filter 17, and the produced water is stored in the softened water tank one 18 and the softened water tank two 19, respectively. The water outlet of the softened water tank two 19 is sent to two groups of primary reverse osmosis membrane groups 192 through high-pressure pump one 191, the prepared basic pure water is transported to the direct drinking water tank 193, the flushing and cleaning water tank 194, and the intermediate water tank one 195, realizing double-line water production and mutual standby. The water outlet of the intermediate water tank one 195 enters two groups of secondary reverse osmosis membrane groups 22 through high-pressure pump two 21, and after deep desalination, it is supplied for hemodialysis. The produced water is stored in the secondary pure water tank 23 and the intermediate water tank two 24. The water outlet of the intermediate water tank two 24 enters two groups of EDI equipment 32 through the booster pump 31 to prepare ultrapure water, which is stored in the test water tank 33. Double-path operation ensures continuity, and the distribution system transports water to the terminal through the frequency conversion constant pressure water supply pump 5 after the water passes through the flow type ultraviolet sterilizer 4 and the microporous filter 6. The main pipeline is provided with an ozone generator 7 to realize continuous bacteriostasis. The test water path is additionally provided with a polishing mixed bed 8 to improve water quality. The system is provided with a heat disinfection function unit. The frequency conversion constant pressure water supply pump 5 is controlled by PLC to drive hot water at 80~85℃ to circulate between the pipe network and the water storage tank for 30~60 minutes to realize pasteurization. The waste water recovery unit collects the first and second reverse osmosis concentrated water for flushing and greening, and the softened regenerated high-salt waste water is discharged into the sewage treatment system.

[0052] The above is merely an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0053] The above is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A hospital central centralized multi-quality water supply system comprising a central water treatment system, characterized in that: The central water treatment system comprises a basic pure water supply system (1), a hemodialysis water supply system (2), an inspection water supply system (3) and a distribution system, the basic pure water supply system (1) is prepared by using a primary reverse osmosis process to prepare basic pure water, which is used to supply cleaning water and drinking pure water, the hemodialysis water supply system (2) is connected with the water outlet end of the basic pure water supply system (1) through a pipeline and further processed by using a double-stage reverse osmosis process to provide direct supply type high-purity water for a hemodialysis department, the inspection water supply system (3) is connected with the water outlet end of the hemodialysis water supply system (2) through a pipeline and integrates a secondary reverse osmosis and an EDI ultra-pure water treatment unit to provide ultra-pure water for an inspection department, and the distribution system respectively transports the basic pure water, the hemodialysis water and the inspection ultra-pure water to various terminal water points to realize central centralized water preparation and sub-quality sub-zone water supply. The distribution system comprises a secondary pure water distribution module and an inspection water distribution module, the secondary pure water distribution module is provided in multiple groups, the multiple groups of secondary pure water distribution modules respectively distribute water in a softened water tank one (18), a direct drinking water tank (193), a flushing and cleaning water tank (194) and a secondary pure water tank (23), wherein the direct drinking water tank (193) is provided with two groups of secondary pure water distribution modules, and the inspection water distribution module is used to transport the ultra-pure water in an inspection water tank (33) to an inspection department terminal. The central water treatment system comprises a heat disinfection function unit and a waste water recovery unit. The heat disinfection function unit comprises a heating device, the heat disinfection function unit drives hot water to form a closed loop circulation between a distribution pipe network and a storage tank through a control variable frequency constant pressure water supply pump (5) to disinfect the distribution system, the disinfection temperature is maintained at 80-85 DEG C by the heating device, the circulation lasts for 30-60 minutes, and the disinfection cycle and duration are set by a PLC controller according to water characteristics of various departments, and the storage tank is the direct drinking water tank (193), the flushing and cleaning water tank (194), the intermediate water tank one (195), the secondary pure water tank (23), the intermediate water tank two (24) and the inspection water tank (33) in the secondary pure water distribution module and the inspection water distribution module.

2. The hospital central centralized split-quality water supply system according to claim 1, characterized in that: The basic pure water supply system (1) comprises two groups of water treatment modules with the same structure, each group of water treatment modules comprises a raw water pump (12), the water inlet of the raw water pump (12) is connected with the water outlet of a raw water tank (11), the water outlet of the raw water pump (12) is connected with the water inlet of a quartz sand filter (13), the water outlet of the quartz sand filter (13) is connected with the water inlet of an activated carbon filter (14), the water outlet of the activated carbon filter (14) is connected with the water inlet of a softener filter (15), the water outlet of the softener filter (15) is connected with the water inlet of a security filter (17), the softener filter (15) is connected with a salt storage device (16), the water outlet of the security filter (17) of one group of water treatment modules is connected with the water inlet of a softened water tank one (18), and the water outlet of the security filter (17) of the other group of water treatment modules is connected with the water inlet of a softened water tank two (19).

3. The hospital central centralized split-quality water supply system according to claim 2, characterized in that: The water outlet of the softened water tank two (19) is connected with two parallel high-pressure pumps one (191), the high-pressure pumps one (191) supply water to two groups of first-level reverse osmosis membrane groups (192) respectively, the water outlet of the first group of first-level reverse osmosis membrane groups (192) is delivered to the direct drinking water tank (193), the flushing and cleaning water tank (194) and the intermediate water tank one (195) through water delivery pipelines respectively, and the water outlet of the second group of first-level reverse osmosis membrane groups (192) is connected in parallel into the water delivery pipeline of the first group, so as to realize double-line water production and mutual standby.

4. The hospital central centralized split-quality water supply system according to claim 3, characterized in that: The hemodialysis water supply system (2) includes two parallel high-pressure pumps two (21), the water inlets of the high-pressure pumps two (21) are connected with the water outlet of the intermediate water tank one (195), the water outlets of the high-pressure pumps two (21) are connected with the water inlets of two groups of second-level reverse osmosis membrane groups (22) respectively, the water outlet of the first group of second-level reverse osmosis membrane groups (22) is delivered into the second-level pure water tank (23) and the intermediate water tank two (24) through water delivery pipelines respectively, and the water outlet of the second group of second-level reverse osmosis membrane groups (22) is connected in parallel into the water delivery pipeline of the first group, so as to realize double-system operation.

5. The hospital central centralized water distribution system of claim 4, wherein: The test water supply system (3) includes two parallel booster pumps (31), the water inlets of the booster pumps (31) are connected with the water outlet of the intermediate water tank two (24), the water outlets of the booster pumps (31) are connected with the water inlets of two groups of EDI devices (32) respectively, the water outlet of the first group of EDI devices (32) is delivered into the test water tank (33) through a water delivery pipeline, and the water outlet of the second group of EDI devices (32) is connected in parallel into the water delivery pipeline of the first group, so as to realize double-path preparation of ultrapure water.

6. The hospital central centralized split-quality water supply system according to claim 5, characterized in that: The softened water tank one (18), the softened water tank two (19), the direct drinking water tank (193), the flushing and cleaning water tank (194), the intermediate water tank one (195), the second-level pure water tank (23), the intermediate water tank two (24) and the test water tank (33) are all provided with immersion type ultraviolet lamps.

7. The hospital central centralized water distribution system of claim 1, wherein: Each group of the second-level pure water distribution modules includes a flow type ultraviolet sterilizer (4), a variable-frequency constant-pressure water supply pump (5), a microporous filter (6) and an ozone generator (7), the variable-frequency constant-pressure water supply pump (5) draws water from the corresponding water tank, the water flow is delivered to each water use point after passing through the flow type ultraviolet sterilizer (4) and the microporous filter (6), and the ozone generator (7) is arranged on the main pipeline leading to the water use point, for injecting low-concentration ozone into the system.

8. The hospital central centralized split-quality water supply system according to claim 7, characterized in that: The test water distribution module includes another variable-frequency constant-pressure water supply pump (5), a flow type ultraviolet sterilizer (4), a microporous filter (6), an ozone generator (7) and a polishing mixed bed (8), the water flow is pressurized by the variable-frequency constant-pressure water supply pump (5) after being drawn from the test water tank (33), sequentially passes through the polishing mixed bed (8), the flow type ultraviolet sterilizer (4) and the microporous filter (6), is delivered to the terminal of the clinical laboratory after being processed, and another ozone generator (7) is arranged on the main pipeline.

9. The hospital central concentrated multi-quality water supply system according to claim 8, characterized in that: The input end of the waste water recovery unit is connected with the concentrated water discharge ports of the first-level reverse osmosis membrane groups (192) and the second-level reverse osmosis membrane groups (22), for collecting low-salt-concentration waste water generated in the water production process as recoverable waste water.

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