Purified water preparation system

Abstract

The utility model discloses a preparation system of purified water. The preparation system at least comprises a raw material input pipeline; the pretreatment device is connected with the raw material input pipeline; the at least one reverse osmosis device is sequentially connected to one side, far away from the raw material input pipeline, of the pretreatment device; the concentrated water tank is connected with one side, far away from the pretreatment device, of the reverse osmosis device; the at least one concentration device is sequentially connected to one side, far away from the reverse osmosis device, of the concentrated water tank; the vaporization device is connected with one side, far away from the concentrated water tank, of the concentration device; the pressurizing device is arranged between the concentrating device and the vaporizing device; the heat supply device is connected with the vaporization device; and the separation device is connected with the output end of the vaporization device. According to the purified water preparation system provided by the utility model, water and salt in the concentrated water can be separated in a low-cost manner, and the water in the concentrated water is recycled, so that the waste of water resources is avoided, and the environment is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a system for preparing purified water. Background Art

[0002] Purified water has strict requirements for indicators such as ions, microorganisms and conductivity, and is widely used in chemical, metallurgical, aerospace, electric power, pharmaceutical and biological fields. In the preparation process of purified water, concentrated water containing a large amount of impurities such as ions and microorganisms will inevitably be produced. Due to the characteristics of high salinity and high hardness of concentrated water, if concentrated water is used directly for reproduction, it will cause equipment corrosion. If concentrated water is directly discharged, it will not only waste water resources, but also pollute the environment. Therefore, a system for preparing purified water is urgently needed to reasonably treat concentrated water. Utility Model Content

[0003] The utility model aims to provide a system for preparing purified water, which can separate water and salt in concentrated water in a low-cost manner, recycle the water in the concentrated water, avoid waste of water resources, and protect the environment.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model is implemented through the following technical solutions.

[0005] The utility model provides a system for preparing purified water, which at least comprises:

[0006] Raw material input pipeline;

[0007] A pretreatment device connected to the raw material input pipeline;

[0008] At least one reverse osmosis device, connected in sequence to a side of the pretreatment device away from the raw material input pipeline;

[0009] A concentrated water tank connected to a side of the reverse osmosis device away from the pretreatment device;

[0010] At least one concentrating device, connected in sequence to a side of the concentrated water tank away from the reverse osmosis device;

[0011] A vaporizing device connected to a side of the concentrating device away from the concentrated water tank;

[0012] A pressurizing device, disposed between the concentrating device and the vaporizing device;

[0013] a heat supply device connected to the vaporization device; and

[0014] A separation device is connected to the output end of the vaporization device.

[0015] In one embodiment of the present invention, the vaporization device comprises two input ports, one of which is connected to the heat supply device, and the other is connected to a side of the pressurizing device away from the concentrating device.

[0016] In an embodiment of the present invention, when there are multiple concentrating devices, the multiple concentrating devices are arranged in series on the same side of the concentrated water tank.

[0017] In an embodiment of the present invention, the preparation system further comprises a fresh water tank, and the fresh water tank is connected to the output end of each of the concentrating devices.

[0018] In an embodiment of the present invention, each of the concentrating devices comprises two output ends, one of the output ends is connected to the fresh water tank, and the other of the output ends is connected to the pressurizing device or another of the concentrating devices.

[0019] In an embodiment of the present invention, the preparation system further comprises a chimney, and the chimney is connected to a side of the separation device away from the vaporization device.

[0020] In one embodiment of the utility model, the separation device includes two outlets, one outlet outputs the crystallized salt, and the other outlet is connected to the chimney.

[0021] In an embodiment of the utility model, the heat supply device includes an input pipeline and a hot air stove, the input pipeline is connected to one side of the hot air stove, and the side of the hot air stove away from the input pipeline is connected to the vaporization device.

[0022] In an embodiment of the utility model, the reverse osmosis device includes two output ports, one of which outputs purified water, and the other of which is connected to the concentrated water tank.

[0023] In an embodiment of the present invention, when there are multiple reverse osmosis devices, the multiple reverse osmosis devices are arranged in series on the same side of the pretreatment device.

[0024] In summary, the utility model provides a purified water preparation system, which can separate water and salt from concentrated water, recycle the water in concentrated water, and avoid waste of water resources. Moreover, the system provided by the utility model can treat concentrated water in a low-cost manner, avoid direct discharge of concentrated water, and thus protect the environment.

[0025] Of course, any method of implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, 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.

[0027] Figure 1 The figure is a schematic structural diagram of a system for preparing purified water in one embodiment of the utility model.

[0028] Marking Description:

[0029] 10. Raw material input pipeline; 11. Pretreatment device; 12. Reverse osmosis device; 13. Concentrated water tank; 14. Concentrating device; 141. Primary concentrating device; 142. Secondary concentrating device; 143. Third-stage concentrating device; 15. Fresh water tank; 16. Pressurizing device; 17. Vaporizing device; 18. Heat supply device; 181. Input pipeline; 182. Hot air furnace; 19. Separation device; 20. Chimney. DETAILED DESCRIPTION

[0030] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. The details in the present invention can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0032] In the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms "first" and "second" appear, they are only used for description and distinction purposes, and cannot be understood as indicating or implying relative importance.

[0033] In the process of preparing purified water, concentrated water containing various organic and inorganic pollutants is inevitably produced. Concentrated water mainly contains a large amount of calcium, magnesium and other ions, and the concentrated water has high hardness and high salt content. If the concentrated water is discharged directly, it will pollute the soil, surface water and ocean, and will also waste water resources. The purified water preparation system provided by the utility model can separate the salt and water in the concentrated water, recycle the concentrated water, and avoid the waste of water resources. Moreover, the preparation system provided by the utility model can reduce the cost of concentrated water treatment and can also avoid the harm to the environment caused by the direct discharge of concentrated water.

[0034] See also Figure 1 As shown, the utility model provides a system for preparing purified water, for example, including a reverse osmosis device 12, a concentrated water tank 13, a concentrating device 14, a pressurizing device 16, a vaporizing device 17, a heat supply device 18 and a separation device 19. Among them, the reverse osmosis device 12, the concentrated water tank 13, the concentrating device 14, the pressurizing device 16, the vaporizing device 17 and the separation device 19 are connected in sequence, and the heat supply device 18 is connected to the vaporizing device 17. The system for preparing purified water provided by the utility model concentrates the concentrated water through the concentrating device 14, and the water in the concentrated water is recycled and reused, which can avoid the waste of water resources. Moreover, through the preparation system provided by the utility model, the concentrated water is processed by the concentrating device 14 to become a concentrated liquid, and the concentrated liquid and the hot air or flue gas output by the heat supply device 18 are directly contacted and heat-transferred in the vaporizing device 17, and the water in the concentrated liquid undergoes a phase change and evaporates into gas and then empties, and the salt in the concentrated liquid crystallizes and precipitates, thereby avoiding the salt in the concentrated water from being directly discharged into the environment, protecting the environment.

[0035] See also Figure 1 As shown, in one embodiment of the present invention, the raw material input pipeline 10 provides raw materials for the entire purified water preparation system. The raw materials enter the purified water preparation system through the raw material input pipeline 10, are disinfected and impurity-removed, and purified water that meets the requirements is output. The raw materials input by the raw material input pipeline 10 are, for example, tap water, or other water sources to be treated.

[0036] See also Figure 1As shown, in one embodiment of the utility model, the pretreatment device 11 is connected to the raw material input pipeline 10 to disinfect and remove impurities from the raw material input pipeline 10. In this embodiment, the pretreatment device 11 includes, for example, a disinfection device and a filter. Among them, the disinfection device is, for example, a pasteurization device, an ultraviolet disinfection device, an ozone disinfection device or a superheated water disinfection device, and the filter includes, for example, one or more of a mechanical filter, an activated carbon filter, a softening filter and a precision filter. By setting a disinfection device, the disinfection device disinfects and sterilizes water, which can reduce the content of microorganisms in the water. By setting a filter, impurities such as suspended matter, colloids, silt, clay and calcium and magnesium ions in the water are mainly intercepted to achieve the purpose of clarifying the water quality, so as to prevent impurities from affecting the operation of the subsequent reverse osmosis device 12.

[0037] See also Figure 1 As shown, in one embodiment of the utility model, the reverse osmosis device 12 is connected to the side of the pretreatment device 11 away from the raw material input pipeline 10 to remove solutes such as ions, microorganisms and colloids in the tap water to obtain purified water that meets the requirements. Among them, there is at least one reverse osmosis device 12. When there are multiple reverse osmosis devices 12, multiple reverse osmosis devices 12 are sequentially connected to the side of the pretreatment device 11 away from the raw material input pipeline 10, and multiple reverse osmosis devices 12 are arranged in series on the same side of the pretreatment device 11. In this embodiment, there is, for example, one reverse osmosis device 12, and the water output from the pretreatment device 11 enters the reverse osmosis device 12. The reverse osmosis membrane in the reverse osmosis device 12 separates the water and inorganic salts in the water, and the water passes through the reverse osmosis membrane to form purified water, and the remaining inorganic salts are intercepted by the reverse osmosis membrane to form concentrated water. Among them, the reverse osmosis membrane of the reverse osmosis device 12 is, for example, a cellulose acetate membrane, an aromatic polyhydrazide membrane or an aromatic polyamide membrane.

[0038] See also Figure 1 As shown, in one embodiment of the utility model, the concentrated water tank 13 is connected to the side of the reverse osmosis device 12 away from the pretreatment device 11. The reverse osmosis device 12, for example, includes two output ports, one output port outputs purified water, and the other output port is connected to the concentrated water tank 13. In this embodiment, a concentrating device 14 is provided on the side of the concentrated water tank 13 away from the reverse osmosis device 12, for recovering water in the concentrated water. By providing the concentrated water tank 13, the concentrated water output by the reverse osmosis device 12 enters the concentrated water tank 13 for storage, and the concentrated water in the concentrated water tank 13 enters the subsequent concentrating device 14, which can stabilize the pressure and flow of the concentrated water at the inlet of the concentrating device 14 and maintain the stable operation of the concentrating device 14.

[0039] See also Figure 1As shown, in one embodiment of the utility model, a concentrator 14 is connected to a side of the concentrated water tank 13 away from the reverse osmosis device 12. For example, there is at least one concentrator 14. When there are multiple concentrators 14, multiple concentrators 14 are sequentially connected to the side of the concentrated water tank 13 away from the reverse osmosis device 12, and multiple concentrators 14 are arranged in series on the same side of the concentrated water tank 13 to improve the recovery rate of water in the concentrated water. The concentrated water enters the concentrator 14 from the concentrated water tank 13, and the concentrator 14 recovers the water in the concentrated water to form fresh water. The salt in the concentrated water is further concentrated to form a concentrated solution. By setting the concentrator 14, the water in the concentrated water can be recovered for reuse, avoiding the waste of water resources. In this embodiment, the concentrator 14 is, for example, a heating concentrator or a membrane concentrator.

[0040] See also Figure 1 As shown, in one embodiment of the utility model, there are three concentrators 14, for example, and the three concentrators 14 include, for example, a primary concentrator 141, a secondary concentrator 142, and a tertiary concentrator 143. Among them, the primary concentrator 141 is connected to the side of the concentrated water tank 13 away from the reverse osmosis device 12, the secondary concentrator 142 is connected to the side of the primary concentrator 141 away from the concentrated water tank 13, and the tertiary concentrator 143 is connected to the side of the secondary concentrator 142 away from the primary concentrator 141. The concentrated water in the concentrated water tank 13 enters the primary concentrator 141 for treatment, the primary concentrator 141 outputs fresh water and primary concentrated liquid, the primary concentrated liquid enters the secondary concentrator 142, the secondary concentrator 142 further concentrates the primary concentrated liquid, and outputs fresh water and secondary concentrated liquid, the secondary concentrated liquid enters the tertiary concentrator 143, the tertiary concentrator 143 further concentrates the secondary concentrated liquid, and the tertiary concentrator 143 outputs fresh water and tertiary concentrated liquid. By providing three concentrating devices 14, the latter concentrating device 14 further concentrates the concentrated liquid output by the former concentrating device 14, and the water in the concentrated liquid is further recovered, thereby improving the recovery rate of the water in the concentrated water.

[0041] See also Figure 1 As shown, in one embodiment of the utility model, the fresh water tank 15 is connected to the output end of each concentrating device 14. In this embodiment, each concentrating device 14 includes two output ends, one output end is connected to the fresh water tank 15, and the other output end is connected to another concentrating device 14 or to the vaporizing device 17. In this embodiment, the output ends of the three concentrating devices 14 are respectively connected to the fresh water tank 15. After the concentrating device 14 recovers the water in the concentrated water or the concentrated liquid, the recovered fresh water is collected in the fresh water tank 15. The content of impurities in the recovered fresh water is relatively low, and the fresh water in the fresh water tank 15 can be used according to demand.

[0042] See also Figure 1As shown, in one embodiment of the utility model, the vaporizer 17 is connected to the side of the concentrator 14 away from the concentrated water tank 13, so as to further separate the water and salt in the concentrated liquid. In this embodiment, the vaporizer 17 is, for example, arranged on the side of the third-stage concentrator 143 away from the second-stage concentrator 142. In the concentrated liquid treated by the concentrator 14, the mass proportion of impurities in the concentrated liquid is, for example, more than 5-10%, which has far exceeded the processing capacity of the concentrator 14. By setting the vaporizer 17, the concentrated liquid is heated in the vaporizer 17, the water in the concentrated liquid evaporates into gas, and the salt in the concentrated liquid precipitates, thereby achieving the purpose of further separating the water and salt in the concentrated liquid.

[0043] See also Figure 1 As shown, in one embodiment of the utility model, a pressurizing device 16 is provided between the concentrating device 14 and the vaporizing device 17, and the pressurizing device 16 is provided at the output end of the concentrating device 14 which is farthest from the concentrated water tank 13. In this embodiment, the pressurizing device 16 is provided, for example, between the three-stage concentrating device 143 and the vaporizing device 17. By providing the pressurizing device 16, the three-stage concentrated liquid output by the three-stage concentrating device 143 is pressurized and atomized and sprayed into the vaporizing device 17, so that the concentrated liquid can fully contact and transfer heat with the heat in the vaporizing device 17, so that the water and salt in the concentrated liquid can be separated more easily. By means of the pressurizing device 16, the heat required for the separation of water and salt in the concentrated liquid can be reduced, and the cost of concentrated liquid treatment can be further reduced.

[0044] See also Figure 1 As shown, in one embodiment of the utility model, the vaporization device 17 includes two input ports, one input port is connected to the side of the pressurizing device 16 away from the concentrating device 14, and the other input port is connected to the heat supply device 18. The heat supplied by the heat supply device 18, such as hot air or flue gas, directly contacts and transfers heat with the concentrated liquid output by the pressurizing device 16 in the vaporization device 17, and the water in the concentrated liquid is evaporated into gas, and the salt in the concentrated liquid is precipitated into solid. Among them, the heat supply device 18 includes, for example, an input pipeline 181 and a hot air furnace 182, the input pipeline 181 is connected to one side of the hot air furnace 182, and the side of the hot air furnace 182 away from the input pipeline 181 is connected to the vaporization device 17. In this embodiment, the input pipeline 181, for example, transports gas such as natural gas, air or flue gas, and the gas is heated in the hot air furnace 182. The heated gas enters the vaporization device 17 and directly contacts and transfers heat with the concentrated liquid.

[0045] See also Figure 1As shown, in one embodiment of the utility model, the separation device 19 is connected to the output end of the vaporization device 17. The water in the concentrated liquid is evaporated into gas in the vaporization device 17, and the salt in the concentrated liquid is precipitated into solid in the vaporization device 17. The gas-solid mixture enters the separation device 19 from the output end of the vaporization device 17 for gas-solid separation, and the crystallized salt solid and water vapor are separated. In this embodiment, the separation device 19 is, for example, a gravity separator, a cyclone separator, or a filter separator, and is also, for example, a centrifugal separator.

[0046] See also Figure 1 As shown, in one embodiment of the utility model, the separation device 19 includes two outlets, one outlet of the separation device 19 outputs the crystallized salt, and the other outlet of the separation device 19 is connected to the chimney 20. In this embodiment, the chimney 20 is connected to the side of the separation device 19 away from the vaporization device 17. The water vapor separated by the separation device 19 enters the chimney 20, and the chimney 20 leads the water vapor to high altitude for discharge. The system provided by the utility model separates the salt from the concentrated water and then empties the water, which can avoid the harm to the environment caused by the direct discharge of the salt in the concentrated water, thereby protecting the environment.

[0047] In summary, the utility model proposes a purified water preparation system, which can avoid the waste of water resources by successively introducing concentrated water to a concentration device, a pressurizing device, a vaporization device and a separation device, and recycling the water in the concentrated water. Moreover, the preparation system provided by the utility model can separate the salt and water in the concentrated water in a low-cost manner, and can also separate the salt from the concentrated water and then drain the water, which can avoid the direct discharge of the salt in the concentrated water to cause harm to the environment.

[0048] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that the specific features, structures, or characteristics described in conjunction with the embodiment are included in at least one embodiment of the utility model, and not necessarily in all embodiments. Thus, the various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the specific features, structures, or characteristics of any specific embodiment of the utility model may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the utility model embodiments described and shown herein may be based on the teachings herein and will be considered part of the spirit and scope of the utility model.

[0049] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the concept of the utility model, such as the technical solution formed by replacing the above-mentioned features with the technical features with similar functions disclosed in this application (but not limited to). In addition to the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present utility model, the remaining technical features will not be repeated here.

Claims

1. A system for preparing purified water, characterized in that: At least: Raw material input pipeline; A pretreatment device connected to the raw material input pipeline; At least one reverse osmosis device, connected in sequence to a side of the pretreatment device away from the raw material input pipeline; A concentrated water tank connected to a side of the reverse osmosis device away from the pretreatment device; At least one concentrating device, connected in sequence to a side of the concentrated water tank away from the reverse osmosis device; A vaporizing device connected to a side of the concentrating device away from the concentrated water tank; A pressurizing device, disposed between the concentrating device and the vaporizing device; A heat supply device connected to the vaporization device; as well as A separation device is connected to the output end of the vaporization device.

2. The preparation system according to claim 1, characterized in that: The vaporization device comprises two input ports, one of which is connected to the heat supply device, and the other is connected to a side of the pressurizing device away from the concentrating device.

3. The preparation system according to claim 1, characterized in that: When there are multiple concentrating devices, the multiple concentrating devices are arranged in series on the same side of the concentrated water tank.

4. The preparation system according to claim 3, characterized in that: The preparation system further comprises a fresh water tank, which is connected to the output end of each of the concentrating devices.

5. The preparation system according to claim 4, characterized in that: Each of the concentrating devices comprises two output ends, one of the output ends is connected to the fresh water tank, and the other output end is connected to the vaporizing device or another of the concentrating devices.

6. The preparation system according to claim 1, characterized in that: The preparation system further comprises a chimney, which is connected to a side of the separation device away from the vaporization device.

7. The preparation system according to claim 6, characterized in that: The separation device comprises two outlets, one of which outputs the crystallized salt and the other of which is connected to the chimney.

8. The preparation system according to claim 1, characterized in that: The heat supply device comprises an input pipeline and a hot blast stove, wherein the input pipeline is connected to one side of the hot blast stove, and a side of the hot blast stove away from the input pipeline is connected to the vaporization device.

9. The preparation system according to claim 1, characterized in that: The reverse osmosis device comprises two output ports, one of which outputs purified water, and the other of which is connected to the concentrated water tank.

10. The preparation system according to claim 1, characterized in that: When there are multiple reverse osmosis devices, the multiple reverse osmosis devices are arranged in series on the same side of the pretreatment device.

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