Central water purification system

Abstract

The utility model relates to the technical field of water treatment, and discloses a central water purification system. In the pretreatment system of the system, a precision filter and an ultrafiltration membrane system are adopted to pretreat raw water, so that compared with a traditional manner of pretreating the raw water by adopting a quartz sand filter, an activated carbon filter and a softening filter in the prior art, the raw water is pretreated; compared with the prior art in which a traditional quartz sand filter, an activated carbon filter and a softening filter are adopted to pretreat raw water, the pretreatment system of the system adopts the precision filter and the ultrafiltration membrane system to filter the raw water, and the precision filter is convenient to maintain in the use process; and the precision filter and the ultrafiltration membrane system have higher filtering efficiency on raw water. Therefore, compared with a pretreatment system in the related technology, the pretreatment system of the system is convenient to maintain, and the efficiency of pretreating the raw water is relatively high.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, for example, to a central pure water system. Background Art

[0002] At present, hospitals use central pure water systems for water supply, which usually include pretreatment systems, reverse osmosis systems, water supply systems and control systems. Under the control of the control system, the pretreatment system pretreats the raw water and transports the pretreated water to the reverse osmosis system. The reverse osmosis system filters the pretreated water to obtain pure water, which is then supplied to the water supply system. The water supply system supplies the pure water to various water use points in the hospital.

[0003] However, in the related art, the pretreatment system usually uses traditional quartz sand filters, activated carbon filters and softening filters to pretreat the raw water.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] In the pretreatment system of the related art, the quartz sand filter is used in a conventional manner, and the quartz sand filter occupies a large area and weighs a large weight, so the maintenance difficulty of the quartz sand filter in the pretreatment system is relatively high (e.g., it is difficult to replace). In addition, the activated carbon filter and the softening filter in the pretreatment system filter the raw water slowly, which will affect the efficiency of the pretreatment system in pretreating the raw water.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The disclosed embodiment provides a central pure water system, in which the maintenance of the pretreatment system is more convenient and the pretreatment system has a higher efficiency in pretreating raw water.

[0009] A central pure water system provided in an embodiment of the present disclosure includes a pretreatment system, a reverse osmosis system and a water supply system, wherein the pretreatment system includes:

[0010] a dosing device connected to the raw water pipeline and configured to treat water in the raw water pipeline;

[0011] A raw water pump is connected to the dosing device through a circulation pipeline and is configured to transport the water treated by the dosing device to the first precision filter through the circulation pipeline;

[0012] A first precision filter is connected to the raw water pump through a circulation pipeline and is configured to filter water delivered by the raw water pump;

[0013] an ultrafiltration membrane system connected to the first precision filter via a circulation pipeline and configured to filter water flowing through the first precision filter;

[0014] The intermediate water tank has an inlet connected to the ultrafiltration membrane system through a circulation pipeline, and a first outlet connected to the reverse osmosis system through a circulation pipeline. The intermediate water tank is configured to store pretreated water delivered by the pretreatment system through the inlet and deliver the pretreated water to the reverse osmosis system through the first outlet.

[0015] Optionally, the pretreatment system also includes a backwash system, which includes: a backwash pump, whose inlet is connected to the second outlet of the intermediate water tank and is configured to extract pretreated water from the intermediate water tank through the second outlet of the intermediate water tank; a second precision filter, connected to the outlet of the backwash pump and the ultrafiltration membrane system, and is configured to filter the pretreated water delivered by the backwash pump and deliver the filtered water to the ultrafiltration membrane system to backwash the ultrafiltration membrane system.

[0016] Optionally, the reverse osmosis system includes a primary reverse osmosis system and a secondary reverse osmosis system, wherein: the primary reverse osmosis system is connected to the pretreatment system and the secondary reverse osmosis system, respectively; the secondary reverse osmosis system is connected to the primary reverse osmosis system and the water supply system, respectively.

[0017] Optionally, the central pure water system also includes a disinfection system, and the primary reverse osmosis system includes: a security filter connected to the first outlet of the intermediate water tank in the pretreatment system; a first high-pressure pump connected to the security filter; and a first reverse osmosis module, respectively connected to the first high-pressure pump, the secondary reverse osmosis system and the disinfection system.

[0018] Optionally, the central pure water system also includes a flushing water tank, and the primary reverse osmosis system also includes a first concentrated water utilization device, wherein: the first concentrated water utilization device has an inlet connected to the circulation pipeline between the safety filter and the first high-pressure pump, and an outlet connected to the flushing water tank.

[0019] Optionally, the outlet of the first high-pressure pump is connected to a disinfection system.

[0020] Optionally, the secondary reverse osmosis system includes: a second high-pressure pump connected to the first reverse osmosis module in the primary reverse osmosis system; and a second reverse osmosis module connected to the second high-pressure pump, the water supply system and the disinfection system, respectively.

[0021] Optionally, the secondary reverse osmosis system further comprises: a second concentrated water utilization device, the inlet of which is connected to the inlet of the second high-pressure pump, and the outlet of which is connected to the raw water pipeline.

[0022] Optionally, the outlet of the second high-pressure pump is connected to a disinfection system.

[0023] Optionally, the central pure water system includes multiple circulation loops for treating raw water.

[0024] The central pure water system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0025] In the embodiment of the present disclosure, the pretreatment system of the central pure water system includes a dosing device, a raw water pump, a first precision filter, an ultrafiltration membrane system and an intermediate water tank connected in sequence through a circulation pipeline. Among them, after the dosing device treats the raw water in the raw water pipeline, the raw water pump transports the water treated by the dosing device to the first precision filter, so that the first precision filter filters the water. After filtering the water, the first precision filter transports it to the ultrafiltration membrane system, so that the ultrafiltration membrane system further filters the water, and the filtered water is transported to the intermediate water tank for storage, thereby realizing the pretreatment of the raw water. In this way, compared with the method of using traditional quartz sand filters, activated carbon filters and softening filters to pretreat raw water in the related art, in the embodiment of the present disclosure, the pretreatment system of the central pure water system uses the first precision filter and the ultrafiltration membrane system to filter and treat the raw water, because the first precision filter is easy to maintain during use, and the first precision filter and the ultrafiltration membrane system have a higher filtering efficiency for raw water. Therefore, compared with the pretreatment system in the related art, the pretreatment system of the central pure water system in the embodiment of the present disclosure is easy to maintain and has a higher efficiency in pretreating raw water.

[0026] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0028] Figure 1 is a schematic diagram of a central pure water system provided by an embodiment of the present disclosure;

[0029] Figure 2 is a schematic diagram of a pretreatment system in a central pure water system provided by an embodiment of the present disclosure;

[0030] Figure 3is a schematic diagram of a primary reverse osmosis system in a central pure water system provided by an embodiment of the present disclosure;

[0031] Figure 4 It is a schematic diagram of a two-stage reverse osmosis system in a central pure water system provided by an embodiment of the present disclosure.

[0032] Reference numerals:

[0033] 1: Pretreatment system; 2: Reverse osmosis system; 21: Primary reverse osmosis system; 22: Secondary reverse osmosis system; 3: Water supply system; 4: Control system; 5: Disinfection system; 6: Flushing water tank;

[0034] 11: dosing device; 12: raw water pump; 13: first precision filter; 14: ultrafiltration membrane system; 15: intermediate water tank; 151: inlet of intermediate water tank; 152: first outlet of intermediate water tank; 153: second outlet of intermediate water tank; 161: backwash pump; 162: second precision filter;

[0035] 211: security filter; 212: first high-pressure pump; 213: first reverse osmosis module; 214: first concentrated water utilization device;

[0036] 221: second high-pressure pump; 222: second reverse osmosis module; 223: second concentrated water utilization device. DETAILED DESCRIPTION

[0037] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0038] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0039] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0040] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0041] Unless otherwise specified, the term "plurality" means two or more and the term "multiple" means two or more.

[0042] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0043] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0044] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0045] At present, hospitals use central pure water systems for water supply, which usually include pretreatment systems, reverse osmosis systems, water supply systems and control systems. Under the control of the control system, the pretreatment system pretreats the raw water and transports the pretreated water to the reverse osmosis system. The reverse osmosis system filters the pretreated water to obtain pure water, which is then supplied to the water supply system. The water supply system supplies the pure water to various water use points in the hospital.

[0046] In the related art, the pretreatment system usually uses traditional quartz sand filters, activated carbon filters and softening filters to pretreat raw water. However, in the pretreatment system of the related art, since the traditional quartz sand filter is used, and the quartz sand filter occupies a large area and weighs a large weight, the maintenance difficulty of the quartz sand filter in the pretreatment system is relatively high (e.g., it is difficult to replace). In addition, the activated carbon filter and softening filter in the pretreatment system filter the raw water slowly, which will affect the efficiency of the pretreatment system in pretreating the raw water.

[0047] In view of this, the embodiment of the present disclosure provides a central pure water system, in which a precision filter and an ultrafiltration membrane system are used in the pretreatment system to pretreat the raw water. Compared with the method of pretreating the raw water by using traditional quartz sand filters, activated carbon filters and softening filters in the related art, the precision filter is easy to maintain during use, and the precision filter and the ultrafiltration membrane system have a higher filtration efficiency for the raw water.

[0048] Combination Figure 1 As shown, the embodiment of the present disclosure provides a central pure water system, which includes a pretreatment system 1, a reverse osmosis system 2, a water supply system 3 and a control system 4. Among them:

[0049] Combination Figure 2 As shown, the pretreatment system 1 includes a dosing device 11, a raw water pump 12, a first precision filter 13, an ultrafiltration membrane system 14 and an intermediate water tank 15.

[0050] In this embodiment, the dosing device 11 is connected to the raw water pipeline and is configured to treat the water in the raw water pipeline. Specifically, the dosing device 11 adds chemicals to the raw water to treat the raw water.

[0051] The raw water pump 12 is connected to the dosing device 11 through a circulation pipeline. When the raw water pump 12 is in operation, the water treated by the dosing device 11 is transported to the first precision filter 13 through the circulation pipeline, so that the first precision filter 13 connected to the raw water pump 12 through the circulation pipeline filters the water transported by the raw water pump.

[0052] The ultrafiltration membrane system 14 is connected to the first precision filter 13 through a circulation pipeline, and the ultrafiltration membrane system 14 further filters the water filtered by the first precision filter 13 .

[0053] The inlet 151 of the intermediate water tank 15 is connected to the ultrafiltration membrane system 14 through a circulation pipeline, and the first outlet 152 is connected to the reverse osmosis system 2 through a circulation pipeline. After the ultrafiltration membrane system 14 further filters the water, pretreated water is obtained, and the pretreated water is transported to the intermediate water tank 15 through the inlet 151 of the intermediate water tank 15 for storage, and the pretreated water stored in the intermediate water tank 15 can be transported to the reverse osmosis system 2 through the first outlet 152 of the intermediate water tank 15.

[0054] In the disclosed embodiment, the pretreatment system 1 of the central pure water system includes a dosing device 11, a raw water pump 12, a first precision filter 13, an ultrafiltration membrane system 14 and an intermediate water tank 15 which are connected in sequence through a circulation pipeline. Among them, after the dosing device 11 treats the raw water in the raw water pipeline, the raw water pump 12 transports the water treated by the dosing device 11 to the first precision filter 13, so that the first precision filter 13 filters the water. After filtering the water, the first precision filter 13 transports it to the ultrafiltration membrane system 14, so that the ultrafiltration membrane system 14 further filters the water, and the filtered water is transported to the intermediate water tank 15 for storage, thereby realizing the pretreatment of the raw water.

[0055] Compared with the method of pre-treating raw water by using traditional quartz sand filter, activated carbon filter and softening filter in the related art, the central pure water system provided in the embodiment of the present disclosure adopts the first precision filter 13 and ultrafiltration membrane system 14 to filter and treat raw water in the pre-treatment system 1 of the central pure water system in the embodiment of the present disclosure. Since the first precision filter 13 is easy to maintain during use, and the first precision filter 13 and ultrafiltration membrane system 14 have higher filtering efficiency for raw water. Therefore, compared with the pre-treatment system in the related art, the pre-treatment system 1 of the central pure water system in the embodiment of the present disclosure is easy to maintain and has higher efficiency in pre-treating raw water.

[0056] In addition, the tank bodies of traditional quartz sand filters and activated carbon filters are usually made of stainless steel, and the production cycle of stainless steel tank bodies is longer than the production cycle of the ultrafiltration membrane components in the ultrafiltration membrane system 14 of the embodiment of the present disclosure. Therefore, the use of the ultrafiltration membrane system 14 provided by the embodiment of the present disclosure in the pretreatment system 1 of the central pure water system can reduce the production cycle. Furthermore, the area occupied by traditional quartz sand filters and activated carbon filters when deployed is larger than the area occupied by the first precision filter 13 and the ultrafiltration model system 14 provided by the embodiment of the present disclosure when deployed. Therefore, the use of the first precision filter 13 and the ultrafiltration model system 14 provided by the embodiment of the present disclosure in the pretreatment system 1 of the central pure water system can save the deployment space of the pretreatment system 1.

[0057] Optionally, combined Figure 2As shown, the pretreatment system 1 also includes a backwashing system, which includes a backwashing pump 161 and a second precision filter 162 connected in sequence through a circulation pipeline. Among them, the inlet of the backwashing pump 161 is connected to the second outlet 153 of the intermediate water tank 15, and the second precision filter 162 is connected to the outlet of the backwashing pump 161 and the ultrafiltration membrane system 14. When the backwashing pump 161 is running, the pretreated water is extracted from the intermediate water tank 15 through the second outlet 153 of the intermediate water tank 15. The second precision filter 162 can filter the pretreated water transported by the backwashing pump 161, and transport the filtered water to the ultrafiltration membrane system 14 to backwash the ultrafiltration membrane system 14.

[0058] In this embodiment, the backwash system can flush the ultrafiltration membrane assembly in the ultrafiltration module system 14, specifically, it can flush the dirt of the ultrafiltration membrane assembly, extend the service life of the ultrafiltration membrane assembly, and also reduce the water treatment load of the ultrafiltration membrane system 14.

[0059] Optionally, combined Figure 1 As shown, the reverse osmosis system 2 includes a primary reverse osmosis system 21 and a secondary reverse osmosis system 22, wherein: the primary reverse osmosis system 21 is connected to the pretreatment system 1 and the secondary reverse osmosis system 2, respectively. The secondary reverse osmosis system 22 is connected to the primary reverse osmosis system 21 and the water supply system 3, respectively. In this way, the reverse osmosis system 2 in the central pure water system uses a two-stage reverse osmosis subsystem to filter water, which can further improve the water quality of pure water.

[0060] Optionally, combined Figure 1 As shown, the central pure water system also includes a disinfection system 5, which is respectively connected to the primary reverse osmosis system 21 and the secondary reverse osmosis system 22 in the reverse osmosis system 2. In this way, the disinfection system 5 can utilize the wastewater generated by each level of the reverse osmosis system to improve the efficiency of wastewater utilization.

[0061] Optionally, combined Figure 3 As shown, the primary reverse osmosis system 21 includes a security filter 211, a first high-pressure pump 212 and a first reverse osmosis module 213. The security filter 211 is connected to the first outlet 152 of the intermediate water tank 15 in the pretreatment system 1. The first high-pressure pump 212 is connected to the security filter 211. Under the action of the first high-pressure pump 212, the pretreated water in the intermediate water tank 15 can be coarsely filtered through the security filter 211 and then transported to the first reverse osmosis module 213 connected to the first high-pressure pump 212 through a circulation pipeline. The first reverse osmosis module 213 is also connected to the secondary reverse osmosis system 22 and the disinfection system 5.

[0062] Optionally, combined Figure 1 As shown, the central pure water system also includes a flushing water tank 6. Figure 3As shown, the primary reverse osmosis system 21 further includes a first concentrated water utilization device 214. The inlet of the first concentrated water utilization device 214 is connected to the circulation pipeline between the security filter 211 and the first high-pressure pump 212, and the outlet of the first concentrated water utilization device 214 is connected to the flushing water tank 6.

[0063] In this embodiment, it is considered that each water tank in the central pure water system may breed bacteria if the water is stored for a long time, and it is also considered that the concentrated water generated by the primary reverse osmosis system 21 is wasted. The concentrated water generated by the primary reverse osmosis system 21 can be transported to the flushing water tank 6 after being processed by the first concentrated water utilization device 214. The water in the flushing water tank 6 is used to clean each water tank in the central pure water system, which can reduce the breeding of bacteria in each water tank and reduce the waste of concentrated water resources.

[0064] Optionally, combined Figure 3 As shown, the outlet of the first high-pressure pump 212 can also be connected to the disinfection system 5. In this way, the first reverse osmosis module 213 can be disinfected by the disinfection system 5.

[0065] Optionally, combined Figure 4 As shown, the secondary reverse osmosis system 22 includes a second high-pressure pump 221 and a second reverse osmosis module 222. The second high-pressure pump 221 is connected to the first reverse osmosis module 213 in the primary reverse osmosis system 21. Under the action of the second high-pressure pump 221, the water filtered by the first reverse osmosis module 213 is transported to the second reverse osmosis module 222 connected to the second high-pressure pump 221 through a circulation pipeline. The second reverse osmosis module 222 further filters the water to obtain pure water, which can be transported to the water supply system 3 connected to the second reverse osmosis module 222, so that the water supply system 3 provides pure water to each water point. The second reverse osmosis module 222 is also connected to the disinfection system 5.

[0066] Optionally, combined Figure 4 As shown, the secondary reverse osmosis system 22 also includes a second concentrated water utilization device 223. The inlet of the second concentrated water utilization device 223 is connected to the inlet of the second high-pressure pump 221, and the outlet of the second concentrated water utilization device 223 is connected to the raw water pipeline. In this way, the concentrated water generated by the secondary reverse osmosis system 22 can be filtered again after being processed by the second concentrated water utilization device 223 and transported to the raw water pipeline, thereby improving the water resource utilization rate of the entire central pure water system.

[0067] Optionally, combined Figure 4 As shown, the outlet of the second high-pressure pump 221 can also be connected to the disinfection system 5. In this way, the second reverse osmosis module 222 can be disinfected by the disinfection system 5.

[0068] Optionally, the central pure water system provided in the embodiment of the present disclosure includes multiple circulation loops for treating raw water. Preferably, the central pure water system includes two circulation loops for treating raw water. In this way, multiple circulation loops simultaneously perform water treatment, which can improve the water treatment efficiency of the entire central pure water system.

[0069] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A central pure water system, comprising a pretreatment system, a reverse osmosis system and a water supply system, characterized in that: The pretreatment system comprises: a dosing device connected to the raw water pipeline and configured to treat water in the raw water pipeline; A raw water pump is connected to the dosing device through a circulation pipeline and is configured to transport the water treated by the dosing device to the first precision filter through the circulation pipeline; A first precision filter is connected to the raw water pump through a circulation pipeline and is configured to filter water delivered by the raw water pump; an ultrafiltration membrane system connected to the first precision filter via a circulation pipeline and configured to filter water flowing through the first precision filter; The intermediate water tank has an inlet connected to the ultrafiltration membrane system through a circulation pipeline, and a first outlet connected to the reverse osmosis system through a circulation pipeline. The intermediate water tank is configured to store pretreated water delivered by the pretreatment system through the inlet and deliver the pretreated water to the reverse osmosis system through the first outlet.

2. The system according to claim 1, characterized in that The pretreatment system also includes a backwashing system, and the backwashing system includes: a backwash pump, the inlet of which is connected to the second outlet of the intermediate water tank, and configured to draw pretreated water from the intermediate water tank through the second outlet of the intermediate water tank; The second precision filter is connected to the outlet of the backwash pump and the ultrafiltration membrane system, and is configured to filter the pretreated water delivered by the backwash pump and deliver the filtered water to the ultrafiltration membrane system to backwash the ultrafiltration membrane system.

3. The system according to claim 1, characterized in that The reverse osmosis system includes a primary reverse osmosis system and a secondary reverse osmosis system, wherein: The primary reverse osmosis system is connected to the pretreatment system and the secondary reverse osmosis system respectively; The secondary reverse osmosis system is connected to the primary reverse osmosis system and the water supply system respectively.

4. The system according to claim 3, characterized in that The central pure water system also includes a disinfection system, and the primary reverse osmosis system includes: A security filter connected to the first outlet of the intermediate water tank in the pretreatment system; The first high-pressure pump is connected to the safety filter; The first reverse osmosis module is connected to the first high-pressure pump, the secondary reverse osmosis system and the disinfection system respectively.

5. The system according to claim 4, characterized in that The central pure water system further includes a flushing water tank, and the primary reverse osmosis system further includes a first concentrated water utilization device, wherein: The first concentrated water utilization device has an inlet connected to the circulation pipeline between the safety filter and the first high-pressure pump, and an outlet connected to the flushing water tank.

6. The system according to claim 4, characterized in that The outlet of the first high-pressure pump is connected to the disinfection system.

7. The system according to claim 4, characterized in that The two-stage reverse osmosis system comprises: A second high-pressure pump is connected to the first reverse osmosis module in the primary reverse osmosis system; The second reverse osmosis module is respectively connected to the second high-pressure pump, the water supply system and the disinfection system.

8. The system according to claim 7, characterized in that The secondary reverse osmosis system also includes: The second concentrated water utilization device has an inlet connected to the inlet of the second high-pressure pump and an outlet connected to the raw water pipeline.

9. The system according to claim 7, characterized in that The outlet of the second high-pressure pump is connected to the disinfection system.

10. The system according to any one of claims 1 to 9, characterized in that: The central pure water system includes multiple circulation loops for treating raw water.

Images