Nanofiltration pipeline direct drinking water wastewater-free integrated equipment

Abstract

The invention discloses nanofiltration pipeline direct drinking water wastewater-free integrated equipment which comprises a controller, a basic pipeline, a raw water electric valve, a water purification tank I, a water purification pump, a biological activated carbon tank, a nanofiltration membrane device, a water purification electric valve, a water purification tank II and a water purification pressure pump, a front-end water inlet, a circulating water outlet and a rear-end water purification port are formed in the shell, the front-end water inlet and the circulating water outlet are communicated with an inner cavity of the hollow nanofiltration membrane pipe, the rear-end water purification port is communicated with the outer side of the hollow nanofiltration membrane pipe, a produced water circulation pipeline is connected to the first water purification tank, and an inlet of the produced water circulation pipeline is connected with the circulating water outlet; through multi-stage filtration treatment measures including the biological active carbon tank and the nanofiltration membrane device, water flow taste and smell changes caused by unified disinfection treatment of municipal tap water can be effectively eliminated, the use experience of a user is ensured, in addition, wastewater cannot be discharged to the outside of the system in the operation period of each process, and the environment is protected. And water resources are effectively saved.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, and in particular to a nanofiltration pipeline direct drinking water wastewater-free integrated device. Background Art

[0002] Drinking water in municipal water supply systems is usually disinfected to meet water use standards, but the above treatment often changes the taste and smell of the water supply, which is not conducive to ensuring the user's water use experience. In order to uniformly solve the above problems, water treatment facilities can only be added at the water supply entrance of the community or building complex. However, there is a lack of mature equipment of this type on the market, and the existing ordinary water treatment equipment also has the problem of producing a lot of wastewater and serious waste of water resources during the water treatment process. Here, a device that is suitable for cluster applications and does not waste water resources during the water treatment process is proposed. Summary of the invention

[0003] In view of the problems existing in the background technology, the purpose of the present invention is to provide a nanofiltration pipeline direct drinking water and wastewater-free integrated equipment, which effectively solves the problems existing in the background technology.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] Nanofiltration pipeline direct drinking water non-wastewater integrated equipment, including a controller, a basic pipeline, and a raw water electric valve, a first water purification tank, a water purification pump, a tee, a biological activated carbon tank, a three-way electric valve, a flow meter, a nanofiltration membrane device, a water purification electric valve, a second water purification tank and a water purification booster pump arranged on the basic pipeline from upstream to downstream, and a plurality of branch pipelines are connected to the basic pipeline downstream of the water purification booster pump; the first water purification tank and the second water purification tank are respectively provided with liquid level sensors;

[0006] A backwash pipeline is provided between the tee and the nanofiltration membrane device, and a backwash electric valve and a filtering device are provided on the backwash pipeline;

[0007] The nanofiltration membrane device comprises a shell and a hollow nanofiltration membrane tube coaxially installed in the shell, the shell is provided with a front water inlet, a circulating water outlet and a rear water purification outlet, the front water inlet and the circulating water outlet are in communication with the inner cavity of the hollow nanofiltration membrane tube, the rear water purification outlet is in communication with the outer side of the hollow nanofiltration membrane tube, and the basic pipeline is connected to the front water inlet and the rear water purification outlet;

[0008] A water production circulation pipeline is also provided between the water purification tank and the nanofiltration membrane device, the inlet side of the water production circulation pipeline is connected to the circulating water outlet, and a water production circulation electric valve is provided on the water production circulation pipeline;

[0009] An ozone activated carbon circulation pipeline is arranged between the three-way electric valve and the first water purification tank, and the first water purification tank is also connected to an ozone generating pipeline, and an ozone circulation pump, an ozone electric valve and an ozone injector are arranged on the ozone generating pipeline, and the ozone injector is connected to an ozone supply line;

[0010] The controller is electrically connected to the raw water electric valve, the clean water pump, the three-way electric valve, the flow meter, the clean water electric valve, the liquid level sensor, the backwash electric valve, the water production circulation electric valve, the ozone circulation pump and the ozone electric valve.

[0011] Furthermore, a nanofiltration water treatment outdoor circulation pipeline is arranged between the second water purification tank and one of the branch pipelines, and a scale inhibition device, a pipeline network large circulation electric valve, a magnetized water activator, a precision filter, a pressure reducing valve, a remote pressure gauge and a stop valve are arranged on the nanofiltration water treatment outdoor circulation pipeline, and the pipeline network large circulation electric valve and the remote pressure gauge are also electrically connected to the controller.

[0012] Furthermore, a connecting pipeline is connected in parallel to the basic pipeline, one end of which is connected to the basic pipeline near the upstream side of the water purification electric valve, and the other end is connected to the basic pipeline near the outlet side of the water purification booster pump. A manual valve is provided on the connecting pipeline.

[0013] Furthermore, a raw water stop valve and a precision filter are also provided on the basic pipeline upstream of the raw water electric valve; a magnetized water activator and an ultraviolet disinfector are also provided on the basic pipeline between the raw water electric valve and the first purified water tank;

[0014] A pressure sensor and a pressure gauge are also provided on the basic pipeline between the three-way connection and the biological activated carbon tank, and the pressure sensor is electrically connected to the controller;

[0015] A pressure gauge, a sampling valve and a precision filter are also provided on the basic pipeline between the biological activated carbon tank and the flow meter;

[0016] A check valve and a scale prevention device are also provided on the basic pipeline between the flow meter and the nanofiltration membrane device;

[0017] A sampling valve and a pressure gauge are provided on the basic pipeline between the nanofiltration membrane device and the water purification electric valve;

[0018] A post-activated carbon tank and a filter are also provided on the basic pipeline between the water purification electric valve and the second water purification tank;

[0019] An ultraviolet disinfector is also provided on the basic pipeline between the second water purification tank and the water purification booster pump;

[0020] A booster pump check valve and a pressure sensor electrically connected to the controller are arranged on the basic pipeline between the clean water booster pump and the branch pipeline.

[0021] Furthermore, the first purified water tank and the second purified water tank are both provided with a sampling valve and a water quality monitor, and the water quality monitor is electrically connected to the controller.

[0022] Furthermore, a breathing valve is also provided on the second water purification tank.

[0023] Furthermore, a pressure reducing valve is also provided on the backwash pipeline between the backwash electric valve and the filter device; and the filter device is a ceramic membrane filter.

[0024] Furthermore, a ceramic membrane filter is provided on the ozone activated carbon circulation pipeline.

[0025] Furthermore, a micro-nano bubble generator is provided at the outlet side of the ozone generating pipeline, and the micro-nano bubble generator has an ozone air inlet hole, and the ozone air inlet hole is connected to the outlet of the ozone injector.

[0026] Furthermore, a pressure reducing valve is provided on the ozone generating pipeline between the ozone electric valve and the ozone injector.

[0027] The present invention has the following beneficial technical effects:

[0028] The present invention can effectively remove harmful substances in municipal water supply through multi-stage filtration treatment measures including biological activated carbon tanks and nanofiltration membrane devices, eliminate changes in water taste and odor caused by unified disinfection of municipal tap water, and ensure the user experience. In addition, during the operation of each process of the present application, no waste water will be discharged outside the system, effectively saving water resources. The ozone activated carbon circulation pipeline can also realize the activation and regeneration of biological activated carbon under control. The overall operation of the system is stable, the maintenance cost is low, and it is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0030] Figure 2 Schematic diagram of the working principle of the hollow nanofiltration membrane in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the present invention, unless otherwise specified, "multiple" means two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention 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 invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figure 1 and Figure 2 As shown, the nanofiltration pipeline direct drinking water and wastewater-free integrated equipment described in this embodiment includes a controller, a basic pipeline 1, and a raw water electric valve 2, a clean water tank 3, a clean water pump 4, a three-way valve 5, a biological activated carbon tank 6, a three-way electric valve 7, a flow meter 8, a nanofiltration membrane device 9, a clean water electric valve 10, a clean water tank 11 and a clean water booster pump 12 arranged on the basic pipeline 1 from upstream to downstream. A plurality of branch pipelines 13 are connected to the basic pipeline 1 downstream of the clean water booster pump 12, and the water supply user port is connected to the branch pipeline 13; the clean water tank 3 and the clean water tank 11 are respectively provided with liquid level sensors 14, and the preferred liquid level sensor 14 is a pressure type liquid level sensor; the clean water pump 4 and the clean water booster pump 12 are both variable frequency pumps, wherein the number of the clean water booster pumps 12 is two, which are activated at the same time or one is used as a backup; the preferred flow meter 8 is a remote metal float flowmeter;

[0034] A backwash pipeline 15 is provided between the tee 5 and the nanofiltration membrane device 9, and a backwash electric valve 16, a pressure reducing valve 17 and a filtering device are provided on the backwash pipeline 15, and the filtering device is a ceramic membrane filter 18;

[0035] The nanofiltration membrane device 9 includes a shell 19 and a hollow nanofiltration membrane tube 20 coaxially installed in the shell 19. The shell 19 is provided with a front water inlet, a circulating water outlet and a rear water purification outlet. The front water inlet and the circulating water outlet are communicated with the inner side of the hollow nanofiltration membrane tube 20, and the rear water purification outlet is communicated with the outer side of the hollow nanofiltration membrane tube 20. The basic pipeline 1 is connected to the front water inlet and the rear water purification outlet.

[0036] A water production circulation pipeline 21 is also provided between the water purification tank 3 and the nanofiltration membrane device 9. The inlet side of the water production circulation pipeline 21 is connected to the circulating water outlet. A water production circulation electric valve 22 is provided on the water production circulation pipeline 21.

[0037] An ozone activated carbon circulation pipeline 23 is arranged between the three-way electric valve 7 and the first water purification tank 3, and a ceramic membrane filter 18 is also arranged on the ozone activated carbon circulation pipeline 23. The first water purification tank 3 is also connected to an ozone generating pipeline 24, and an ozone circulating pump 25, an ozone electric valve 26, a pressure reducing valve 27, an ozone injector 28 and a micro-nano bubble generator 29 are arranged on the ozone generating pipeline 24. The micro-nano bubble generator 29 has an ozone air inlet, and the ozone air inlet is connected to the outlet of the ozone injector 28. The inlet of the ozone injector 28 is connected to an ozone supply line 30. An ozone control box is arranged at the upstream end of the ozone supply line 30, which is responsible for the on-off of the ozone supply;

[0038] The controller is electrically connected to the raw water electric valve 2, the clean water pump 4, the three-way electric valve 7, the flow meter 8, the clean water electric valve 10, the liquid level sensor 14, the backwash electric valve 16, the water production circulation electric valve 22, the ozone circulation pump 25 and the ozone electric valve 26. The preferred controller is a PLC controller.

[0039] A nanofiltration water treatment outdoor circulation pipeline 31 is also arranged between the second water purification tank 11 and a branch pipeline 13, which is used to realize the timed circulation process of the outdoor pipeline network at the user end. Specifically, the nanofiltration water treatment outdoor circulation pipeline 31 is provided with a scale prevention device 32, a pipeline network large circulation electric valve 33, a magnetized water activator 34, a precision filter 35, a pressure reducing valve 36, a remote pressure gauge 37 and a stop valve 38, and the pipeline network large circulation electric valve 33 and the remote pressure gauge 37 are also electrically connected to the controller; the above-mentioned scale prevention device 32 is a filter net; the water outlet of the second water purification tank 11 is sent to the branch pipeline 13, and the return water flows in the opposite direction from a selected branch pipeline 13 to the second water purification tank 11, realizing the timed large circulation of supply and return water of the outdoor pipeline network at the user end. For example, the nanofiltration water treatment outdoor circulation pipeline can be set to circulate once no more than 12 hours, circulate twice a day, and each circulation is 2-4 hours to avoid the formation of stale water.

[0040] A connecting pipeline 39 is also connected in parallel to the basic pipeline 1. One end of the connecting pipeline 39 is connected to the basic pipeline 1 near the upstream side of the water purification electric valve 10, and the other end is connected to the basic pipeline 1 near the outlet side of the water purification booster pump 12. A manual valve 40 is provided on the connecting pipeline 39. The connecting pipeline 39 is connected and closed in coordination with the water purification electric valve 10, and can be used for backwashing of the second water purification tank 11.

[0041] A raw water stop valve 41 and a precision filter 42 are also provided on the basic pipeline 1 upstream of the raw water electric valve 2; a magnetized water activator 43 and an ultraviolet disinfector 44 are also provided on the basic pipeline 1 between the raw water electric valve 2 and the first water purification tank 3; a pressure sensor 45 and a pressure gauge are also provided on the basic pipeline 1 between the tee 5 and the biological activated carbon tank 6, and the pressure sensor 45 is electrically connected to the controller; a pressure gauge, a sampling valve 46 and a precision filter 47 are also provided on the basic pipeline 1 between the biological activated carbon tank 6 and the flow meter 8; a check valve is also provided on the basic pipeline 1 between the flow meter 8 and the nanofiltration membrane device 9 48 and a scale prevention device 49, the scale prevention device 49 is also a filter screen; a sampling valve 50 and a pressure gauge are provided on the basic pipeline 1 between the nanofiltration membrane device 9 and the water purification electric valve 10; a post-activated carbon tank 51 and a filter 52 are also provided on the basic pipeline 1 between the water purification electric valve 10 and the second water purification tank 11, and the filter 52 is a folded precision filter; an ultraviolet disinfector 53 is provided on the basic pipeline 1 between the second water purification tank 11 and the water purification booster pump 12; a booster pump check valve 54 and a pressure sensor 55 electrically connected to the controller are provided on the basic pipeline 1 between the water purification booster pump 12 and the branch pipeline 13.

[0042] The first purified water tank 3 and the second purified water tank 11 are both provided with a sampling valve 56 and a water quality monitor 57 , and the water quality monitor 57 is electrically connected to the controller; the second purified water tank 11 is also separately provided with a breathing valve 58 .

[0043] The working process of this embodiment is as follows: the controller controls the raw water electric valve 2 to open, and the municipal water supply enters the first water purification tank 3 after passing through the precision filter 42, the magnetized water activator 43 and the ultraviolet disinfector 44. When the liquid level in the first water purification tank 3 rises to the middle liquid level, the water purification pump 4 starts to work, and the water flow in the first water purification tank 3 is pumped out and passes through the biological activated carbon tank 6, the precision filter 47, the flow meter 8 and the scale prevention device 49 to reach the front water inlet of the nanofiltration membrane device 9. The water flows into the inner cavity of the hollow nanofiltration membrane tube 20 from the front water inlet, and then passes through the hollow nanofiltration membrane tube 20 to complete the filtration and enter the rear water purification port. The water sent out from the rear water purification port passes through the post-activated carbon tank 51 and the filter 52 and enters the second water purification tank 11. The water flow in the second water purification tank 11 can be sent to each branch pipeline 13 by the water purification booster pump 12 for use by the user end;

[0044] When the water purification electric valve 10 is opened or closed, the water purification pump 4 can extract the water flow in the water purification tank 3 and return it to the water purification tank 3 through the water production circulation pipeline 21. In this process, the water flow will be purified by the biological activated carbon tank 6, the precision filter 47 and the nanofiltration membrane device 9 to form a water production circulation system for the water purification tank 3. The continuously treated water will be cleaner and have lower pollutant content.

[0045] The information of the liquid level rise or fall in the first clean water tank 3 and the second clean water tank 11 is fed back to the controller for regulating the operation of the system. Specifically, when the first clean water tank 3 drops from a high liquid level to a medium liquid level, the raw water electric valve 2 opens and the first clean water tank 3 is replenished with water; when the liquid level in the first clean water tank 3 drops to a low liquid level, the clean water pump 4 stops working and the first clean water tank 3 no longer discharges water; when the second clean water tank 11 drops from a high liquid level to a medium liquid level, the clean water electric valve 10 opens, and the clean water pump 4 starts working to replenish water to the second clean water tank 11; when the liquid level in the second clean water tank 11 rises to a high liquid level, the clean water electric valve 10 closes, and the clean water pump 4 stops working; when the liquid level in the second clean water tank 11 drops below the medium liquid level, the clean water booster pump 12 stops working, and when the second clean water tank 11 rises to the medium liquid level again, the controller allows the clean water booster pump 12 to start supplying water, and when the liquid level in the second clean water tank 11 rises to a high liquid level, the purified water production work is completed;

[0046] It should be pointed out that when the device produces water, the water production circulation electric valve 22 arranged on the water production circulation pipeline 21 maintains a certain opening, for example, 20%, and the clean water produced by filtering water by the nanofiltration membrane device 9 enters the second clean water tank 11, and the water that fails to pass through the hollow nanofiltration membrane tube 20 is sent out from the circulating water outlet into the water production circulation pipeline 21 and returned to the first clean water tank 3 for subsequent treatment. This coordination avoids wastewater discharge and effectively saves water resources;

[0047] During the water production operation, the flow meter 8 feeds back the flow information to the controller. When the accumulated water production reaches the set total flow and the liquid level of the second water purification tank 11 is in a high liquid level state, the water purification electric valve 10 is controlled to be closed, the water production circulation electric valve 21 is controlled to be fully opened, the water purification pump 4 is running, the three-way electric valve 7 is switched to the ozone activated carbon circulation pipeline 23 connection state, and the ozone generation pipeline 24 is running. The ozone production process is as follows: the ozone circulation pump 25 extracts part of the water in the first water purification tank 3 and then reaches the micro-nano bubble generator 29, the ozone gas and micro-nano bubbles sent by the ozone injector 28 are simultaneously sprayed into the first water purification tank 3 to form ozone micro-nano bubble water, the water purification pump 4 extracts the ozone micro-nano bubble water in the first water purification tank 3 and sends it to the biological activated carbon tank 6, the ozone micro-nano bubbles produced by the micro-nano bubble generator 29 and the ozone generator 28 can not only purify harmful substances but also oxidize and activate the biological activated carbon, restoring its activity. The water flow sent out from the biological activated carbon tank 6 returns to the clean water tank 3 from the ozone activated carbon circulation pipeline 23 to form an ozone activated carbon circulation system, and the ozone activated carbon circulation system is set to operate at night; the backwash cycle can also be operated during the operation of the above process, specifically: the backwash electric valve 16 is controlled to open, and the ozone micro-nano bubble water flows into the backwash pipeline 15 and then passes through the ceramic membrane filter 18 to enter the rear end clean water port and reversely pass through the hollow nanofiltration membrane tube 20, completing the backwashing sterilization and disinfection of the hollow nanofiltration membrane tube 20, and the backwash water flows out through the circulating water outlet of the nanofiltration membrane device 9 and finally flows into the water production circulation pipeline 21 through the water production circulation electric valve 22 and then re-enters the clean water tank 3 to form a backwash circulation system; in actual use, the nanofiltration membrane device 9 can be backwashed and disinfected regularly according to the total flow rate of the water production, and regular membrane backwashing will extend the life of the hollow nanofiltration membrane tube 20 and restore the water production rate of the hollow nanofiltration membrane tube 20;

[0048] If there is a conflict between the equipment systems during operation, the priority order is: water replenishment of the second water purification tank 11, ozone activated carbon circulation system, backwash system, nanofiltration water treatment outdoor circulation system;

[0049] Compared with the prior art, this embodiment effectively removes harmful substances in municipal water supply through multi-stage filtration treatment measures including biological activated carbon tank 6 and nanofiltration membrane device 9, eliminates the changes in water taste and odor caused by unified disinfection treatment of municipal tap water, and ensures the user experience. In addition, during the operation of each process of this embodiment, no wastewater will be discharged outside the system, which effectively saves water resources. The ozone activated carbon circulation pipeline 23 can also realize the regeneration of biological activated carbon under control. The overall operation of the system is stable, the maintenance cost is low, and it is suitable for popularization and use.

[0050] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and to design various embodiments with various modifications suitable for specific uses.

Claims

1. Nanofiltration pipeline direct drinking water wastewater-free integrated equipment, characterized in that: It includes a controller, a basic pipeline, and a raw water electric valve, a first water purification tank, a water purification pump, a tee, a biological activated carbon tank, a three-way electric valve, a flow meter, a nanofiltration membrane device, a water purification electric valve, a second water purification tank and a water purification booster pump which are arranged on the basic pipeline in sequence from upstream to downstream. A plurality of branch pipelines are connected to the basic pipeline downstream of the water purification booster pump; the first water purification tank and the second water purification tank are respectively provided with liquid level sensors; A backwash pipeline is provided between the tee and the nanofiltration membrane device, and a backwash electric valve and a filtering device are provided on the backwash pipeline; The nanofiltration membrane device comprises a shell and a hollow nanofiltration membrane tube coaxially installed in the shell, the shell is provided with a front water inlet, a circulating water outlet and a rear water purification outlet, the front water inlet and the circulating water outlet are in communication with the inner cavity of the hollow nanofiltration membrane tube, the rear water purification outlet is in communication with the outer side of the hollow nanofiltration membrane tube, and the basic pipeline is connected to the front water inlet and the rear water purification outlet; A water production circulation pipeline is also provided between the water purification tank and the nanofiltration membrane device, the inlet side of the water production circulation pipeline is connected to the circulating water outlet, and a water production circulation electric valve is provided on the water production circulation pipeline; An ozone activated carbon circulation pipeline is arranged between the three-way electric valve and the first water purification tank, and the first water purification tank is also connected to an ozone generating pipeline, and an ozone circulation pump, an ozone electric valve and an ozone injector are arranged on the ozone generating pipeline, and the ozone injector is connected to an ozone supply line; The controller is electrically connected to the raw water electric valve, the clean water pump, the three-way electric valve, the flow meter, the clean water electric valve, the liquid level sensor, the backwash electric valve, the water production circulation electric valve, the ozone circulation pump and the ozone electric valve.

2. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to claim 1 is characterized in that: A nanofiltration water treatment outdoor circulation pipeline is arranged between the second water purification tank and one of the branch pipelines. The nanofiltration water treatment outdoor circulation pipeline is provided with a scale prevention device, a pipeline network large circulation electric valve, a magnetized water activator, a precision filter, a pressure reducing valve, a remote pressure gauge and a stop valve. The pipeline network large circulation electric valve and the remote pressure gauge are also electrically connected to the controller.

3. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to claim 2 is characterized in that: A connecting pipeline is also connected in parallel to the basic pipeline, one end of which is connected to the basic pipeline near the upstream side of the water purification electric valve, and the other end is connected to the basic pipeline near the outlet side of the water purification booster pump. A manual valve is arranged on the connecting pipeline.

4. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to any one of claims 1 to 3, characterized in that: A raw water stop valve and a precision filter are also provided on the basic pipeline upstream of the raw water electric valve; a magnetized water activator and an ultraviolet disinfector are also provided on the basic pipeline between the raw water electric valve and the first purified water tank; A pressure sensor and a pressure gauge are also provided on the basic pipeline between the three-way connection and the biological activated carbon tank, and the pressure sensor is electrically connected to the controller; A pressure gauge, a sampling valve and a precision filter are also provided on the basic pipeline between the biological activated carbon tank and the flow meter; A check valve and a scale prevention device are also provided on the basic pipeline between the flow meter and the nanofiltration membrane device; A sampling valve and a pressure gauge are provided on the basic pipeline between the nanofiltration membrane device and the water purification electric valve; A post-activated carbon tank and a filter are also provided on the basic pipeline between the water purification electric valve and the second water purification tank; An ultraviolet disinfector is also provided on the basic pipeline between the second water purification tank and the water purification booster pump; A booster pump check valve and a pressure sensor electrically connected to the controller are arranged on the basic pipeline between the clean water booster pump and the branch pipeline.

5. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to claim 4 is characterized in that: The first purified water tank and the second purified water tank are both provided with a sampling valve and a water quality monitor, and the water quality monitor is electrically connected to the controller.

6. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to claim 5 is characterized in that: The second water purification tank is also provided with a breathing valve.

7. The nanofiltration pipeline direct drinking water waste-free integrated equipment according to claim 4 is characterized in that: A pressure reducing valve is also provided on the backwash pipeline between the backwash electric valve and the filter device; the filter device is a ceramic membrane filter.

8. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to claim 4 is characterized in that: The ozone activated carbon circulation pipeline is provided with a ceramic membrane filter.

9. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to claim 4 is characterized in that: A micro-nano bubble generator is arranged at the outlet side of the ozone generating pipeline. The micro-nano bubble generator is provided with an ozone air inlet hole, and the ozone air inlet hole is connected to the outlet of the ozone injector.

10. The nanofiltration pipeline direct drinking water wastewater-free integrated equipment according to claim 4, characterized in that: A pressure reducing valve is arranged on the ozone generating pipeline between the ozone electric valve and the ozone injector.

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