CN211445331U - A bipolar reverse osmosis treatment system - Google Patents

Abstract

The utility model relates to a bipolar reverse osmosis treatment system, comprising a raw water tank, a quartz sand filter, an activated carbon filter, a dosing device, a security filter, a primary reverse osmosis high-pressure pump, a primary reverse osmosis device, and a pH adjusting device , secondary high pressure pump, secondary reverse osmosis unit and RO water tank. The utility model achieves high water production and low energy consumption through the cooperation between a plurality of membrane shells, and at the same time, it also has the function of membrane screening to meet the purification requirements of water quality; the utility model is treated by bipolar reverse osmosis. , the concentrated water is treated for many times, the water production is increased, and the cleanliness of pure water is provided at the same time; each stage of the reverse osmosis treatment system in the present utility model performs multiple treatment procedures, reduces the discharge of concentrated water, and reduces the amount of concentrated water discharged. The concentrated water is treated for many times, which is in line with various regulations and policies of environmental protection.

Description

A bipolar reverse osmosis treatment system

technical field

The utility model belongs to the technical field of water treatment equipment, in particular to a bipolar reverse osmosis treatment system.

Background technique

Pure water equipment mainly uses reverse osmosis membrane technology to exert a certain pressure on water, so that water molecules and ionic mineral elements pass through the reverse osmosis membrane, and most of the inorganic salts (including heavy metals), organic matter and bacteria, Viruses cannot penetrate the reverse osmosis membrane, so that the permeated pure water and the impermeable concentrated water are strictly separated. In the purification, concentration and separation of food, medicine, chemical industry, etc., reverse osmosis technology is the most advanced technology in the world today. The advanced, most effective and most energy-saving membrane separation technology, used in conjunction with the pretreatment system, has the advantages of advanced technology, simple operation, low operating cost, no pollution, convenient maintenance, etc.; the use of high pressure pump pressure, reverse osmosis membrane It can effectively remove impurities such as dissolved solids, organic matter, colloids, microorganisms and bacteria in water. It has the advantages of wide application range, high degree of automation, small footprint, low energy consumption, and good effluent quality. The reverse osmosis host is mainly composed of a booster pump, a membrane shell, a reverse osmosis membrane, and a control circuit. The core part of the water quality, the quality of the produced water mainly depends on this part.

In the prior art, during the treatment process of pure water equipment, concentrated water cannot be reprocessed, but is directly discharged, which not only affects the water quality, but also reduces the output of pure water, which is not in line with the concept of environmental protection.

SUMMARY OF THE INVENTION

The utility model aims to solve the above-mentioned defects, and provides a bipolar reverse osmosis treatment system.

In order to overcome the defects existing in the background technology, the technical solution adopted by the present utility model to solve its technical problems is: a bipolar reverse osmosis treatment system, including a raw water tank, a quartz sand filter, an activated carbon filter, a dosing device, a security A filter, a primary reverse osmosis high-pressure pump, a primary reverse osmosis device, a pH adjusting device, a secondary high pressure pump, a secondary reverse osmosis unit and an RO water tank, characterized in that: the water inlet of the raw water tank is connected with a first pipeline, One end of the first pipe that is far away from the original water tank is connected to the tap water supply port, and a raw water inlet solenoid valve is installed on the first pipe; , the second pipeline is equipped with a manual valve for the water outlet of the raw water tank, the water outlet of the raw water pump is connected with a third pipeline, and the end of the third pipeline is connected to the quartz sand filter through a multi-media automatic multi-way valve, and the third pipeline The raw water pump outlet manual valve, the inlet water flow meter and the sand filter inlet water pressure gauge are installed in sequence on the upper part, and the multi-media automatic multi-way valve is installed at the top water inlet of the quartz sand filter;

The quartz sand filter is connected to the fourth pipeline through the multi-media automatic multi-way valve on the top, the end of the fourth pipeline is connected to the activated carbon automatic multi-way valve on the top of the activated carbon filter, and the carbon filter inlet water pressure is sequentially installed on the fourth pipeline. The water outlet of the activated carbon automatic multi-way valve is connected to the fifth pipeline, the end of the fifth pipeline is connected to the water inlet end of the security filter, and the fifth pipeline is sequentially installed along the water flow direction. Treating the effluent solenoid valve and the inlet water conductivity meter, a scale inhibitor dosing device is installed between the pretreatment effluent solenoid valve and the inlet water conductivity meter;

The security filter is installed with a security filter outlet pressure gauge, the water outlet of the security filter is connected with a fifth pipeline, the end of the fifth pipeline is connected to the water inlet end of the first-stage reverse osmosis high-pressure pump, and the fifth pipeline is installed There is a first-stage RO low-pressure protection switch, the water outlet of the first-stage reverse osmosis high-pressure pump is connected with a sixth pipeline, and a first-stage RO high-pressure protection switch and a first-stage high-pressure pump outlet regulating valve are sequentially installed on the sixth pipeline along the water flow direction, The end of the sixth pipeline is equipped with a first-stage RO inlet water pressure gauge, and the sixth pipeline is equipped with a first introduction branch pipe and a second introduction branch pipe, and the first introduction branch pipe and the second introduction branch pipe are installed in the first-stage high-pressure pump. Between the outlet regulating valve and the first-stage RO inlet water pressure gauge, the first-stage reverse osmosis device includes three first-stage reverse osmosis membrane shells, and the adjacent two first-stage reverse osmosis membrane shells are connected through pipelines. The inlet branch pipes are respectively connected with one end of the two membrane shells in the primary reverse osmosis device, and the other ends of the three primary reverse osmosis membrane shells are connected with discharge branch pipes. Connected through the seventh pipeline, the first-stage RO product water outlet valve, the first-stage RO concentrated water flowmeter, the second-stage RO low-pressure protection switch and the first-stage RO product water conductivity meter are installed in sequence along the water flow direction on the seventh pipeline. The end is connected with the secondary high-pressure pump, and the seventh pipeline is connected with a PH adjusting device through the third branch pipe; the water outlet end of the secondary high-pressure pump is connected with an eighth pipeline, and the eighth pipeline is sequentially installed with a secondary high-pressure pump along the water flow direction Water outlet regulating valve and secondary RO high pressure protection switch, the end of the eighth pipeline is equipped with a secondary RO inlet water pressure gauge, and the eighth pipeline is connected to a fourth branch pipe near the inner surface of the secondary RO inlet eye. The reverse osmosis unit includes two secondary reverse osmosis membrane shells, adjacent secondary reverse osmosis membrane shells are communicated through pipes, and the end of the fourth branch pipe is connected with one end of a secondary reverse osmosis membrane shell of the secondary reverse osmosis unit, The other ends of the two secondary reverse osmosis membrane shells are connected with a fifth branch pipe, a sampling valve is installed on the fifth branch pipe, and the end of the fifth branch pipe is connected with a ninth pipe, and the ninth pipe is along the water flow direction A second-level RO product water manual valve, a second-level RO product water flow meter, a second-level RO product water conductivity meter, and a second-level RO product water solenoid valve are installed in sequence, the end of the ninth pipeline is connected with an RO water tank, and the RO product The RO water tank level switch is installed on the water tank;

The multi-media automatic multi-way valve on the top of the quartz sand filter and the activated carbon automatic multi-way valve on the top of the activated carbon filter are connected with a tenth pipeline. The tenth pipeline is connected with a sixth branch pipe and a seventh branch pipe, and the sixth branch pipe is arranged in the quartz sand. Between the multi-media automatic multi-way valve on the top of the filter and the activated carbon automatic multi-way valve on the top of the activated carbon filter, the seventh branch pipe is set at the outlet end of the activated carbon automatic multi-way valve on the top of the activated carbon filter, the end of the sixth branch pipe and the seventh branch pipe The ends are all connected with the eleventh pipeline, and the end of the eleventh pipeline is connected to the concentrated water discharge place;

A twelfth pipeline is connected to the concentrated water discharge port of the primary reverse osmosis membrane shell at the bottom of the primary reverse osmosis device. The twelfth pipeline is sequentially installed with a primary RO concentrated water pressure gauge, a primary RO concentrated water regulating valve and a For the primary RO concentrated water flowmeter, the end of the twelfth pipeline is connected with the eleventh pipeline, and the concentrated water discharge port of the secondary reverse osmosis membrane shell at the bottom of the secondary reverse osmosis device is connected with the thirteenth pipeline. A secondary RO concentrated water pressure gauge, a secondary RO concentrated water regulating valve and a secondary RO concentrated water flowmeter are installed in sequence along the water flow direction, and the end of the thirteenth pipeline is communicated with the eleventh pipeline.

In a preferred embodiment of the present invention, the scale inhibitor dosing device is composed of a dosing box and a dosing metering pump, and the dosing metering pump controls the input flow of the scale inhibitor.

In a preferred embodiment of the present invention, an exhaust valve is provided on the top of the security filter.

In a preferred embodiment of the present invention, all pipes and branch pipes are made of 304 stainless steel.

In a preferred embodiment of the present utility model, the first-stage reverse osmosis high-pressure pump adopts model CDM3-16 of Nanfang Pump Industry.

In a preferred embodiment of the present invention, the secondary high-pressure pump adopts CDM3-12 of Nanfang Pump Industry.

The beneficial effects of the present utility model are:

1. The utility model has the advantages of flexible operation, high processing efficiency, simple structure and space saving;

2. Through the cooperation between a plurality of membrane shells, the utility model makes the membrane shells have high water production and low energy consumption, and at the same time, it also has the screening function of the membrane to meet the purification requirements of water quality;

3. In the present invention, the pH value of the water quality in the system is regulated by the pH adjusting device, and the reverse osmosis membrane cannot remove CO2 and other dissolved gases, and it is easy to form HCO3- in the water, causing the conductivity of the effluent to increase and the pH to be acidic. Therefore, adding NaOH to the water forms Na2CO3, which is easily removed by the reverse osmosis membrane, thereby reducing the conductivity of the effluent and improving the purification quality of the water;

4. In the utility model, the design of the conductivity meter is arranged on the water pipe to monitor the water quality and conduct it to the PLC control programming display screen, which is convenient for the staff to monitor the treated water quality;

5. In the present utility model, a series of purification and reverse osmosis treatments are completed through the cooperation of each component device and the valve body switch, which is different from the traditional pure water purification process, effectively improves the purification quality of pure water, and also facilitates the purification of equipment components. maintenance operations;

6. The present utility model processes the concentrated water for many times through the bipolar reverse osmosis treatment, which improves the water production and provides the cleanliness of the pure water at the same time;

7. Each stage of the reverse osmosis treatment system in the present utility model performs multiple treatment procedures, which reduces the discharge of concentrated water, and processes the concentrated water for multiple times, which conforms to various regulations and policies of environmental protection.

Description of drawings

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a schematic diagram of the processing flow of the present invention.

Description of reference numerals: raw water tank-1, raw water pump-2, quartz sand filter-3, activated carbon filter-4, dosing device-5, security filter-6, primary reverse osmosis high-pressure pump-7, a Stage reverse osmosis device-8, PH adjustment device-9, two-stage high pressure pump-10, two-stage reverse osmosis unit-11, RO water tank-12.

Detailed ways

The preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, so that the protection scope of the present utility model can be more clearly defined. .

As shown in Figure 1, a bipolar reverse osmosis treatment system includes a raw water tank 1, a quartz sand filter 3, an activated carbon filter 4, a dosing device 5, a security filter 6, a primary reverse osmosis high-pressure pump 7, a Stage reverse osmosis device 8 , PH adjustment device 9 , secondary high pressure pump 10 , secondary reverse osmosis unit 11 and RO water tank 12 .

The water inlet of the raw water tank 1 is connected with a first pipeline, the end of the first pipeline away from the raw water tank 1 is connected with the tap water supply port, and a raw water inlet solenoid valve is installed on the first pipeline; Two pipelines, one end of the second pipeline away from the raw water tank 1 is connected with a raw water pump 2, the second pipeline is installed with a manual valve for the water outlet of the raw water tank, the water outlet end of the raw water pump 2 is connected with a third pipeline, and the end of the third pipeline passes through The multi-media automatic multi-way valve is connected to the quartz sand filter 3, and the third pipeline is sequentially installed with a raw water pump outlet manual valve, an inlet water flow meter and a sand filter inlet water pressure gauge, and the multi-media automatic multi-way valve is installed Water inlet at the top of the quartz sand filter 3.

The quartz sand filter 3 is connected to the fourth pipeline through the multi-media automatic multi-way valve on the top, and the end of the fourth pipeline is connected to the activated carbon automatic multi-way valve on the top of the activated carbon filter 4. Water pressure gauge, the water outlet of the activated carbon automatic multi-way valve is connected to the fifth pipeline, the end of the fifth pipeline is connected to the water inlet end of the security filter 6, and the carbon filter outlet water pressure is sequentially installed on the fifth pipeline along the water flow direction The meter, the pretreatment effluent solenoid valve and the inlet water conductivity meter, a scale inhibitor dosing device 5 is installed between the pretreatment effluent solenoid valve and the inlet water conductivity meter, and the scale inhibitor dosing device 5 is composed of dosing It is composed of a tank and a dosing metering pump, and the dosing metering pump controls the input flow of the scale inhibitor.

The security filter 6 is provided with a security filter outlet pressure gauge, the water outlet of the security filter 6 is connected with a fifth pipeline, and the end of the fifth pipeline is connected to the water inlet end of the first-stage reverse osmosis high-pressure pump 7, and the fifth A first-stage RO low-pressure protection switch is installed on the pipeline, a sixth pipeline is connected to the water outlet of the first-stage reverse osmosis high-pressure pump 7, and a first-stage RO high-pressure protection switch and a first-stage high-pressure pump are sequentially installed on the sixth pipeline along the water flow direction. The outlet regulating valve, a first-stage RO inlet water pressure gauge is installed at the end of the sixth pipeline, a first introduction branch pipe and a second introduction branch pipe are installed on the sixth pipeline, and the first introduction branch pipe and the second introduction branch pipe are installed in the Between the first-stage high-pressure pump outlet regulating valve and the first-stage RO inlet water pressure gauge, the first-stage reverse osmosis device 8 includes three first-stage reverse osmosis membrane shells, and the adjacent two first-stage reverse osmosis membrane shells are connected through pipelines. The introduction branch pipe and the second introduction branch pipe are respectively connected with one end of the two membrane shells in the primary reverse osmosis device, and the other ends of the three primary reverse osmosis membrane shells are all connected with discharge branch pipes, and sampling valves are installed on the discharge branch pipes. , the three discharge branch pipes are connected through the seventh pipe, and the seventh pipe is installed with the first-stage RO product water outlet valve, the first-stage RO concentrated water flowmeter, the second-stage RO low-pressure protection switch and the first-stage RO product water conductivity along the water flow direction. Instrument, the end of the seventh pipeline is communicated with the secondary high-pressure pump 10, and the seventh pipeline is communicated with a PH adjusting device 9 through the third branch pipe; A secondary high-pressure pump outlet regulating valve and a secondary RO high-pressure protection switch are installed in sequence in the direction, and a secondary RO inlet pressure gauge is installed at the end of the eighth pipeline. Four branch pipes, the two-stage reverse osmosis unit 11 includes two two-stage reverse osmosis membrane shells, adjacent two-stage reverse osmosis membrane shells are communicated through pipes, and the end of the fourth branch pipe is connected with a two-stage reverse osmosis unit of the two-stage reverse osmosis unit. One end of the permeable membrane shell and the other ends of the two secondary reverse osmosis membrane shells are connected with a fifth branch pipe, a sampling valve is installed on the fifth branch pipe, and the end of the fifth branch pipe is connected with a ninth pipe, the The ninth pipeline is sequentially installed with a secondary RO produced water manual valve, a secondary RO produced water flowmeter, a secondary RO produced water conductivity meter and a secondary RO produced water solenoid valve along the water flow direction, and the end of the ninth pipeline is connected with a The RO water tank 12 has an RO water tank level switch installed on the RO water tank 12 .

The multi-media automatic multi-way valve on the top of the quartz sand filter 3 and the activated carbon automatic multi-way valve on the top of the activated carbon filter 4 are connected with a tenth pipeline, and the tenth pipeline is connected with a sixth branch pipe and a seventh branch pipe, and the sixth branch pipe is arranged at Between the multi-media automatic multi-way valve on the top of the quartz sand filter 3 and the activated carbon automatic multi-way valve on the top of the activated carbon filter 4, the seventh branch pipe is arranged at the outlet end of the activated carbon automatic multi-way valve on the top of the activated carbon filter 4, and the sixth branch pipe The end and the end of the seventh branch pipe are both communicated with the eleventh pipe, and the end of the eleventh pipe is communicated with the concentrated water discharge place.

A twelfth pipeline is connected to the concentrated water discharge port of the primary reverse osmosis membrane shell at the bottom of the primary reverse osmosis device 8, and a primary RO concentrated water pressure gauge and a primary RO concentrated water regulating valve are sequentially installed on the twelfth pipeline along the water flow direction. The end of the twelfth pipeline is connected with the eleventh pipeline, and the concentrated water discharge port of the second-stage reverse osmosis membrane shell at the bottom of the two-stage reverse osmosis device is connected with the thirteenth pipeline, and the thirteenth pipeline A secondary RO concentrated water pressure gauge, a secondary RO concentrated water regulating valve and a secondary RO concentrated water flowmeter are installed in sequence along the water flow direction. discharge.

All pipes and branch pipes of this system equipment are made of 304 stainless steel.

Working principle: When the system is in use, water is injected into the raw water tank 1, and the raw water pump 2 will pump out the water in the raw water tank 1 under high pressure, and introduce it into the quartz sand filter 3 and the activated carbon filter 4. The raw water passes through the quartz sand filter 3 and the activated carbon filter. After the pretreatment of 4, it is introduced into the security filter-6. At the same time, the scale inhibitor dosing device 5 quantitatively adds the scale inhibitor to the circulating raw water. The pressurization of the high-pressure pump 7 is introduced into the primary reverse osmosis device 8. After the first two primary reverse osmosis membrane shells of the primary reverse osmosis device 8 perform synchronous reverse osmosis purification on the raw water, the first two primary reverse osmosis membranes The concentrated water generated by the osmosis membrane shell is introduced into the third stage reverse osmosis membrane shell for further purification. The concentrated water filtered out at this stage flows into the eleventh pipeline through the twelfth pipeline to the concentrated water drainage. The water filtered by the primary reverse osmosis membrane shell is then pressurized by the secondary high pressure pump 10. The concentrated water filtered out at this stage flows into the eleventh pipeline through the thirteenth pipeline to the concentrated water drainage. The PH adjusting device 9 injects a PH adjusting agent into the raw water flowing through the system to adjust the pH of the raw water, pressurize the hydraulic pressure of the raw water in the system, so that the raw water is introduced into the secondary reverse osmosis unit 11, and passes through the two reverse osmosis units of the secondary reverse osmosis unit. After the filtration of a secondary reverse osmosis membrane shell, the produced water is introduced into the RO water tank 12 .

When the system is out of use, start the raw water pump 2, which can be controlled by the switches inside the multi-media automatic multi-way valve and the activated carbon automatic multi-way valve to effectively discharge the residual concentrated water in the quartz sand filter 3 and the activated carbon filter 4 directly. to the concentrated water drain.

The technical solution of the present application uses PLC to control the programming box to carry out programming switch control, and to combine the process system with the cooperation of various electrical components, so as to achieve the filtering treatment of water quality with different requirements.

The electrical components appearing in this article are all connected with the external main controller and 220V mains, and the main controller can be a conventional known device controlled by a computer or the like.

The above descriptions are only the embodiments of the present invention, and are not intended to limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other Relevant technical fields are similarly included in the scope of patent protection of the present invention.

Claims (6)

1. The utility model provides a bipolar reverse osmosis processing system, includes former water tank, quartz sand filter, activated carbon filter, charge device, cartridge filter, one-level reverse osmosis high-pressure pump, one-level reverse osmosis unit, PH adjusting device, second grade high-pressure pump, second grade reverse osmosis unit and RO water tank, its characterized in that: the water inlet of the raw water tank is connected with a first pipeline, one end of the first pipeline, far away from the raw water tank, is connected with a tap water supply port, and a raw water inlet electromagnetic valve is mounted on the first pipeline; the raw water tank water outlet is connected with a second pipeline, one end of the second pipeline, far away from the raw water tank, is connected with a raw water pump, a raw water tank water outlet manual valve is installed on the second pipeline, the water outlet end of the raw water pump is connected with a third pipeline, the tail end of the third pipeline is connected with a quartz sand filter through a multi-medium automatic multi-way valve, the raw water pump water outlet manual valve, a water inlet flow meter and a sand filtration water inlet pressure meter are sequentially installed on the third pipeline, and the multi-medium automatic multi-way valve is installed at a top water inlet of the quartz sand filter;

the quartz sand filter is connected with a fourth pipeline through a multi-medium automatic multi-way valve at the top, the tail end of the fourth pipeline is connected with an activated carbon automatic multi-way valve at the top of the activated carbon filter, a carbon filtering water inlet pressure gauge is sequentially arranged on the fourth pipeline, a water outlet of the activated carbon automatic multi-way valve is connected with a fifth pipeline, the tail end of the fifth pipeline is connected with a water inlet end of the security filter, a carbon filtering water outlet pressure gauge, a pretreatment water outlet electromagnetic valve and a water inlet conductivity meter are sequentially arranged on the fifth pipeline along the water flow direction, and a scale inhibitor dosing device is arranged between the pretreatment water outlet electromagnetic valve and the water inlet conductivity meter;

the safety filter is provided with a safety filter water outlet pressure gauge, the water outlet of the safety filter is connected with a fifth pipeline, the tail end of the fifth pipeline is connected with the water inlet end of a first-level reverse osmosis high-pressure pump, the fifth pipeline is provided with a first-level RO low-pressure protection switch, the water outlet of the first-level reverse osmosis high-pressure pump is connected with a sixth pipeline, the sixth pipeline is sequentially provided with a first-level RO high-pressure protection switch and a first-level high-pressure pump outlet regulating valve along the water flow direction, the tail end of the sixth pipeline is provided with a first-level RO water inlet pressure gauge, the sixth pipeline is provided with a first lead-in branch pipe and a second lead-in branch pipe, the first lead-in branch pipe and the second lead-in branch pipe are arranged between the first-level high-pressure pump outlet regulating valve and the first-level, the first inlet branch pipe and the second inlet branch pipe are respectively connected with one end of two membrane shells in the first-stage reverse osmosis device, the other ends of the three first-stage reverse osmosis membrane shells are respectively connected with a discharge branch pipe, sampling valves are respectively arranged on the discharge branch pipes, the three discharge branch pipes are communicated through a seventh pipeline, a first-stage RO produced water outlet valve, a first-stage RO concentrated water flowmeter, a second-stage RO low-pressure protection switch and a first-stage RO produced water conductivity meter are sequentially arranged on the seventh pipeline along the water flow direction, the tail end of the seventh pipeline is communicated with a second-stage high-pressure pump, and a PH adjusting device is communicated on the seventh pipeline through a third branch pipe; the water outlet end of the second-stage high-pressure pump is communicated with an eighth pipeline, a second-stage high-pressure pump water outlet regulating valve and a second-stage RO high-pressure protection switch are sequentially arranged on the eighth pipeline along the water flow direction, a second-stage RO water inlet pressure gauge is arranged at the tail end of the eighth pipeline, a fourth branch pipe is communicated at a position, close to the inner surface of a second-stage RO water inlet eye, of the eighth pipeline, the second-stage reverse osmosis unit comprises two second-stage reverse osmosis membrane shells, adjacent second-stage reverse osmosis membrane shells are communicated through a pipeline, one end of one second-stage reverse osmosis membrane shell of the second-stage reverse osmosis unit is connected to the tail end of the fourth branch pipe, the other ends of the two second-stage reverse osmosis membrane shells are communicated with a fifth branch pipe, sampling valves are respectively arranged on the fifth branch pipe, a ninth pipeline is communicated with the tail end of the fifth branch pipe, and a second-stage RO water production hand valve, the tail end of the ninth pipeline is connected with an RO water tank, and an RO water tank liquid level switch is installed on the RO water tank;

the multi-medium automatic multi-way valve at the top of the quartz sand filter and the activated carbon automatic multi-way valve at the top of the activated carbon filtering device are communicated with a tenth pipeline, the tenth pipeline is communicated with a sixth branch pipe and a seventh branch pipe, the sixth branch pipe is arranged between the multi-medium automatic multi-way valve at the top of the quartz sand filter and the activated carbon automatic multi-way valve at the top of the activated carbon filtering device, the seventh branch pipe is arranged at the water outlet end of the activated carbon automatic multi-way valve at the top of the activated carbon filtering device, the tail ends of the sixth branch pipe and the seventh branch pipe are communicated with an eleventh pipeline, and the tail end of the eleventh pipeline is communicated with a concentrated water discharge position;

the concentrated water discharge port intercommunication of one-level reverse osmosis membrane shell of one-level reverse osmosis unit bottom has the twelfth pipeline, install one-level RO dense water manometer, one-level RO dense water governing valve and the concentrated water flowmeter of one-level RO on the twelfth pipeline in proper order along the water flow direction, the end and the eleventh pipeline intercommunication of twelfth pipeline, the concentrated water discharge port intercommunication of the second grade reverse osmosis membrane shell of second grade reverse osmosis unit bottom has the thirteenth pipeline, install second grade RO dense water manometer, second grade RO dense water governing valve and the concentrated water flowmeter of second grade RO in proper order along the water flow direction on the thirteenth pipeline, thirteenth pipeline end and eleventh pipeline intercommunication.

2. A bipolar reverse osmosis treatment system according to claim 1, wherein: the scale inhibitor dosing device consists of a dosing tank and a dosing metering pump, and the dosing metering pump is used for controlling the input flow of the scale inhibitor.

3. A bipolar reverse osmosis treatment system according to claim 1, wherein: and exhaust valves are arranged at the tops of the security filters.

4. A bipolar reverse osmosis treatment system according to claim 1, wherein: all pipes and manifolds were made of 304 stainless steel.

5. A bipolar reverse osmosis treatment system according to claim 1, wherein: the first-stage reverse osmosis high-pressure pump adopts a south pump CDM3-16 model.

6. A bipolar reverse osmosis treatment system according to claim 1, wherein: the second-stage high-pressure pump adopts south pump CDM 3-12.

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