Reverse osmosis concentrated water zero-discharge recovery system

Abstract

The utility model relates to the technical field of water treatment, and provides a reverse osmosis concentrated water zero-discharge recovery system which comprises a first water tank, a reverse osmosis device, a reverse osmosis booster pump and a second water tank, a first conveying pipe and a backflow pipe are arranged between the first water tank and the reverse osmosis device, and the reverse osmosis booster pump is arranged on the first conveying pipe; a first water quality monitoring device and a first three-way valve are arranged on the return pipe; a first branch pipe is arranged between the first three-way valve and the second water tank. Before and after a reverse osmosis process of a water treatment system, when data monitored by the first water quality monitoring device is within a specified range, the return pipe directly conveys concentrated water into the first water tank, and the concentrated water is mixed and diluted with a primary reverse osmosis water source of a sewage plant and then is fed into the reverse osmosis device again for treatment; when data indexes monitored by the first water quality monitoring device are abnormal, the first three-way valve is switched, and water in the return pipe flows into the second water tank to serve as dust removal water of an ash plant, so that the reverse osmosis concentrated water is recycled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a reverse osmosis concentrated water zero discharge recovery system. BACKGROUND

[0002] The water treatment production system mainly adopts the water treatment technology of the traditional self-cleaning filter, ultrafiltration, reverse osmosis and mixed bed desalination process. In the water production process of the reverse osmosis unit, 25% to 35% of concentrated water is generated. At present, the reverse osmosis concentrated water is mostly discharged into the sewage system, which not only causes waste of water resources, but also increases the sewage cost. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the present application is to provide a reverse osmosis concentrated water zero discharge recovery system, which realizes the recycling of reverse osmosis concentrated water, saves water resources, reduces emissions and reduces production costs.

[0004] The embodiment of the present application provides a reverse osmosis concentrated water zero discharge recovery system, which adopts the following technical scheme:

[0005] A reverse osmosis concentrated water zero discharge recovery system, comprising a first water tank, a reverse osmosis device, a reverse osmosis booster pump and a second water tank, a first conveying pipe and a backflow pipe are arranged between the first water tank and the reverse osmosis device, the reverse osmosis booster pump is arranged on the first conveying pipe, a first water quality monitoring device and a first three-way valve are arranged on the backflow pipe, and a first branch pipe is arranged between the first three-way valve and the second water tank.

[0006] Preferably, a second three-way valve and a second water quality monitoring device are arranged on the first conveying pipe, and a second branch pipe is arranged between the second three-way valve and the second water tank.

[0007] Preferably, the first water quality monitoring device is located between the first three-way valve and the reverse osmosis device.

[0008] Preferably, the second water quality monitoring device is located between the second three-way valve and the first water tank.

[0009] Preferably, the reverse osmosis concentrated water zero discharge recovery system further comprises a water pump and a second conveying pipe, the second conveying pipe is connected to the second water tank, and the water pump is arranged on the second conveying pipe.

[0010] Preferably, a liquid level meter is arranged in the second water tank.

[0011] Preferably, the first three-way valve and the second three-way valve are both electric valves.

[0012] Preferably, the first water quality monitoring device is an ORP detector.

[0013] Preferably, the second water quality monitoring device is a conductivity monitor.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] The application is applied to the reverse osmosis process of a water treatment system, and a return pipe is arranged between a reverse osmosis device and a first water tank to transport concentrated water. A first water quality monitoring device monitors the concentrated water. When the data monitored by the first water quality monitoring device is within a specified range, the return pipe directly transports the concentrated water into the first water tank, and the concentrated water is mixed and diluted with primary reverse osmosis water source of a sewage plant. Under the action of a reverse osmosis booster pump, the concentrated water is sent into the reverse osmosis device again for treatment. When the data monitored by the first water quality monitoring device is abnormal, a first three-way valve is switched, and the water in the return pipe flows to a first branch pipe and is transported into a second water tank through the first branch pipe as dust removal water of a coal ash plant, so that the reverse osmosis concentrated water is recycled and reused, water resources are saved, emissions are reduced, and production costs are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the 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.

[0017] Figure 1 The structure of some embodiments of the application is shown in the structure diagram.

[0018] The reference signs are as follows:

[0019] 1, first water tank; 2, reverse osmosis device; 3, reverse osmosis booster pump; 4, second water tank; 5, first conveying pipe; 6, return pipe; 7, first water quality monitoring device; 8, first three-way valve; 9, first branch pipe; 10, second three-way valve; 11, second water quality monitoring device; 12, second branch pipe; 13, water pump; 14, second conveying pipe; 15, liquid level meter. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the application more clear, the following will combine the drawings in the embodiments of the application to clearly and completely describe the technical solutions in the embodiments of the application. Obviously, the described embodiments are some of the embodiments of the application, not all the embodiments. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0022] It should be noted that similar reference numbers 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.

[0023] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the component must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0026] Embodiments

[0027] As Figure 1 shown, the reverse osmosis concentrated water zero discharge recovery system described in the embodiments of the application comprises a first water tank 1, a reverse osmosis device 2, a reverse osmosis booster pump 3 and a second water tank 4, a first conveying pipe 5 and a return pipe 6 are arranged between the first water tank 1 and the reverse osmosis device 2, the reverse osmosis booster pump 3 is arranged on the first conveying pipe 5, the first water quality monitoring device 7 and the first three-way valve 8 are arranged on the return pipe 6, and the first three-way valve 8 and the second water tank 4 are connected through the first branch pipe 9.

[0028] In use, the concentrated water produced by the reverse osmosis device 2 is transported through the return pipe 6, the first water quality monitoring device 7 monitors the concentrated water, when the data monitored by the first water quality monitoring device 7 is within the specified range, the return pipe 6 directly transports the concentrated water into the first water tank 1, the concentrated water is mixed and diluted with the sewage plant primary reverse osmosis water source, and under the action of the reverse osmosis booster pump 3, the water is again sent into the reverse osmosis device 2 for treatment, when the data monitored by the first water quality monitoring device 7 is abnormal, the first three-way valve 8 is switched, the water in the return pipe 6 flows to the first branch pipe 9 and is transported to the inside of the second water tank 4 through the first branch pipe 9 as ash plant dust removal water, thereby realizing the recycling of reverse osmosis concentrated water, saving water resources, reducing emissions, and reducing production costs.

[0029] In this embodiment, the first conveying pipe 5 is provided with a second three-way valve 10 and a second water quality monitoring device 11, the second three-way valve 10 is provided with a second branch pipe 12 between the second three-way valve 10 and the second water tank 4, and the second water quality monitoring device 11 monitors the conductivity of the water outlet of the first water tank 1, when the data monitored by the second water quality monitoring device 11 is abnormal, under the action of the reverse osmosis booster pump 3, the first conveying pipe 5 directly transports the water to the reverse osmosis device 2 for water production, when the data monitored by the second water quality monitoring device 11 is within the specified range, the second three-way valve 10 is switched, and the water flows into the inside of the second water tank 4 through the second branch pipe 12 as dust removal water, thereby reducing the unnecessary treatment amount of the reverse osmosis device 2 and prolonging the service life of the reverse osmosis device 2.

[0030] In this embodiment, the first water quality monitoring device 7 is located between the first three-way valve 8 and the reverse osmosis device 2.

[0031] In this embodiment, the second water quality monitoring device 11 is located between the second three-way valve 10 and the first water tank 1.

[0032] In this embodiment, the reverse osmosis concentrated water zero-emission recycling system further comprises a water pump 13 and a second conveying pipe 14, the second conveying pipe 14 is connected to the second water tank 4, and the water pump 13 is arranged on the second conveying pipe 14, in use, the water pump 13 pumps the water in the first water tank 1 to the second conveying pipe 14, and the water is transported to the ash plant for dust removal through the second conveying pipe 14.

[0033] In this embodiment, the inside of the second water tank 4 is provided with a liquid level meter 15, and the operator can obtain the liquid level height in the second water tank 4 through the reading of the liquid level meter 15, thereby facilitating the timely discharge of the water in the second water tank 4.

[0034] In this embodiment, the first three-way valve 8 and the second three-way valve 10 are both electric valves, the electric valves can realize remote monitoring and automatic adjustment, improve the system response speed and control accuracy, and do not need manual on-site operation, thereby reducing labor costs.

[0035] In this embodiment, the first water quality monitoring device 7 is an ORP detector, and the ORP detector has a real-time monitoring function, can continuously and accurately measure the ORP value of the solution, and provide dynamic water quality information for the operator.

[0036] In this embodiment, the second water quality monitoring device 11 is a conductivity monitor, and the second water quality monitoring device 11 can be used to measure the conductivity of water, so as to judge the purity and pollution degree of water quality.

[0037] The above is only a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A reverse osmosis concentrate zero-discharge recovery system, characterized in that: The device includes a first water tank, a reverse osmosis unit, a reverse osmosis booster pump, and a second water tank. A first delivery pipe and a return pipe are provided between the first water tank and the reverse osmosis unit. The reverse osmosis booster pump is installed on the first delivery pipe. A first water quality monitoring device and a first three-way valve are installed on the return pipe. A first branch pipe is provided between the first three-way valve and the second water tank.

2. The reverse osmosis concentrate zero-discharge recovery system according to claim 1, characterized in that: The first delivery pipe is equipped with a second three-way valve and a second water quality monitoring device, and a second branch pipe is provided between the second three-way valve and the second water tank.

3. The reverse osmosis concentrate zero-discharge recovery system according to claim 2, characterized in that: The first water quality monitoring device is located between the first three-way valve and the reverse osmosis device.

4. The reverse osmosis concentrate zero-discharge recovery system according to claim 2, characterized in that: The second water quality monitoring device is located between the second three-way valve and the first water tank.

5. A reverse osmosis concentrate zero-discharge recovery system according to claim 2, characterized in that: It also includes a water pump and a second delivery pipe, the second delivery pipe being connected to the second water tank, and the water pump being mounted on the second delivery pipe.

6. The reverse osmosis concentrate zero-discharge recovery system according to claim 5, characterized in that: The second water tank is equipped with a level gauge.

7. A reverse osmosis concentrate zero-discharge recovery system according to claim 6, characterized in that: Both the first three-way valve and the second three-way valve are electric valves.

8. The reverse osmosis concentrate zero-discharge recovery system according to claim 1, characterized in that: The first water quality monitoring device is an ORP detector.

9. A reverse osmosis concentrate zero-discharge recovery system according to claim 2, characterized in that: The second water quality monitoring device is a conductivity monitor.

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