Multifunctional integrated nanofiltration pipeline direct drinking water equipment
Through multi-functional integrated design and multi-stage treatment, combined with ozone and ultraviolet disinfection, the problems of low integration and poor sterilization effect of direct drinking water equipment have been solved, achieving efficient, energy-saving and safe direct drinking water supply.
Patent Information
- Application Number
- CN202521992872.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-17
AI Technical Summary
Existing direct drinking water equipment suffers from low integration, poor sterilization effect, and unstable operation, posing potential water quality safety hazards.
Adopting a multi-functional integrated design, it includes a raw water tank, a pretreatment device, a precision filtration device, an ozone generator, a micro-nano bubble generator, a pure water tank, and a terminal treatment device. Through multi-stage treatment and a dual ozone sterilization strategy, combined with ultraviolet disinfection and activated carbon filtration, it achieves water quality assurance throughout the entire process.
It improves water quality safety and system redundancy, reduces operating energy consumption and maintenance costs, and ensures an efficient, energy-saving, safe and sustainable direct drinking water supply.
Smart Images
Figure CN224677933U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of direct drinking water equipment technology, and more specifically, to a multifunctional integrated nanofiltration pipeline direct drinking water equipment. Background Technology
[0002] Piped drinking water systems, as an important solution for improving drinking water quality, have been widely used in office buildings, schools, hospitals, and high-end residential communities. Existing piped drinking water equipment typically uses reverse osmosis (RO) or nanofiltration (NF) membrane technology as its core, supplemented by pretreatment and post-treatment units.
[0003] Currently, mainstream integrated direct drinking water equipment on the market typically includes the following process: Municipal tap water first enters the raw water tank for storage and buffering, and then passes through a pretreatment system. This pretreatment system generally consists of a multi-media filter (such as quartz sand, anthracite) and an activated carbon filter, designed to initially remove suspended particles, residual chlorine, and some organic matter from the water to protect the subsequent expensive membrane modules from fouling and oxidation damage. The pretreated water is pressurized by a high-pressure pump and then enters the RO or NF membrane module, where most of the dissolved salts, heavy metals, organic matter, and microorganisms are removed. The produced pure water is usually stored in a sterile pure water tank, and finally undergoes terminal disinfection by an ultraviolet (UV) sterilizer before the water supply point, and a post-activated carbon filter is used to improve the taste before it is supplied to users for drinking. However, this traditional technical solution has several obvious drawbacks: 1. Limited ozone application and sterilization efficiency: Some equipment uses ozone for disinfection, but it is usually only added at a single node before or after the membrane. Ozone's low solubility and poor mass transfer efficiency in water result in incomplete sterilization and oxidation, potentially creating blind spots in microbial elimination. The insufficient disinfection capability of the pure water tank, the most susceptible link in the system to bacterial growth, is a recognized pain point in the industry. 2. Unstable pretreatment effect: Traditional mechanical filtration and activated carbon adsorption have limited removal capabilities for pollutants, primarily small-molecule organic matter. When municipal water quality fluctuates, poor pretreatment can accelerate membrane fouling, requiring frequent chemical cleaning, increasing maintenance costs and shortening membrane lifespan. 3. Low system redundancy and safety hazards: The entire system's sterilization and disinfection heavily relies on the filtration effect of the terminal UV lamps and the membrane itself. If the UV lamp efficiency declines or the membrane element suffers invisible damage, the system loses its final microbial barrier, directly outputting substandard water, posing a water quality safety risk.
[0004] Therefore, there is an urgent need for a multifunctional integrated nanofiltration pipeline direct drinking water equipment to solve the problems of low integration, poor sterilization effect and unstable operation of existing direct drinking water equipment. Utility Model Content
[0005] In view of this, this utility model proposes a multifunctional integrated nanofiltration pipeline direct drinking water device, which aims to solve the problems of low integration, poor sterilization effect and unstable operation of existing direct drinking water devices.
[0006] This utility model provides a multifunctional integrated nanofiltration pipeline direct drinking water device, comprising:
[0007] The raw water tank is connected to the municipal water supply pipeline at its input end;
[0008] The pretreatment device has its input end connected to the output end of the raw water tank;
[0009] A first ozone generator and a micro / nano bubble generator are connected together, and the micro / nano bubble generator is connected to the pretreatment device.
[0010] The precision filtration device has its input end connected to the output end of the pretreatment device, and the precision filtration device is also connected to the output end of the micro-nano bubble generator;
[0011] A second ozone generator and an ozone mixer, wherein the output end of the second ozone generator is connected to the ozone mixer, and the input end of the ozone mixer is connected to the output end of the precision filter device;
[0012] A pure water tank, the input end of which is connected to the output end of the ozone mixer;
[0013] The end-of-pipe treatment device has its input end connected to the output end of the pure water tank, and the output end of the end-of-pipe treatment device is used to deliver the treated water to the user.
[0014] Furthermore, the pretreatment device includes:
[0015] The quartz sand filter device has its input end connected to the output end of the raw water tank.
[0016] The input end of the activated carbon filter is connected to the output end of the quartz sand filter.
[0017] The softening device tank has its input end connected to the output end of the activated carbon filter.
[0018] Furthermore, the pretreatment device also includes:
[0019] The regenerated salt tank has its output end connected to the softening device tank.
[0020] Furthermore, the precision filtration device includes:
[0021] The first filter tank is filled with a polypropylene meltblown filter element, and the input end of the first filter tank is connected to the output end of the pretreatment device.
[0022] The nanofiltration membrane module has its input end connected to the output end of the first filter canister, its output end connected to the input end of the ozone mixer, and its nanofiltration membrane module is also connected to the micro / nano bubble generator.
[0023] Furthermore, the nanofiltration membrane assembly includes at least two nanofiltration membrane filters.
[0024] Furthermore, the end-processing device includes:
[0025] The second filter tank is filled with a polypropylene meltblown filter element, and the input end of the second filter tank is connected to the output end of the pure water tank.
[0026] An ultraviolet sterilizer is installed on the water supply pipeline connected to the output end of the second filter tank.
[0027] Furthermore, the multifunctional integrated nanofiltration pipeline direct drinking water equipment also includes:
[0028] At least two float flow meters are provided, one of which is installed on the water supply pipeline between the precision filter and the ozone mixer, and the other is installed on the wastewater pipeline connected to the output end of the precision filter.
[0029] Compared with existing technologies, the advantages of this invention lie in its organic integration of multiple units, including a raw water tank, a pretreatment device, a precision filtration device, an ozone generator, a micro-nano bubble generator, a pure water tank, and a point-of-use treatment device, achieving end-to-end water quality assurance from municipal water supply to drinking water. Firstly, the pretreatment device effectively removes large particulate impurities, suspended solids, and some organic pollutants, providing a stable water quality foundation for subsequent precision filtration and nanofiltration stages. Simultaneously, the micro-nano bubble generator works synergistically with the first ozone generator, achieving not only efficient oxidation and sterilization but also enhancing ozone solubility through micro-nano bubbles, thus improving pollutant degradation efficiency. The precision filtration device further removes fine particles and residual pollutants, ensuring water purity. The second ozone generator and ozone mixer enhance deep sterilization and oxidation treatment, ensuring the water in the pure water tank maintains a low bacterial load and excellent taste. The point-of-use treatment device can be configured with ultraviolet disinfection, activated carbon polishing filtration, and other functions as needed, achieving the final guarantee of drinking water. The integrated design of the overall structure reduces the footprint and pipeline connection complexity, and lowers operating energy consumption and maintenance costs; the multi-stage treatment and dual ozone sterilization strategy significantly improves water quality safety and system redundancy, avoids water quality hazards caused by the failure of a single link, and achieves efficient, energy-saving, safe and sustainable direct drinking water supply. Attached Figure Description
[0030] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0031] Figure 1 A schematic diagram of the structure of the multifunctional integrated nanofiltration pipeline direct drinking water equipment provided in this embodiment of the utility model.
[0032] In the diagram: 100, Raw water tank; 200, Pretreatment device; 210, Quartz sand filter; 220, Activated carbon filter; 230, Softening tank; 240, Regeneration salt tank; 310, First ozone generator; 320, Micro / nano bubble generator; 400, Precision filtration device; 410, First filter tank; 420, Nanofiltration membrane module; 421, Nanofiltration membrane filter; 510, Second ozone generator; 520, Ozone mixer; 600, Pure water tank; 700, End-of-pipe treatment device; 710, Second filter tank; 720, Ultraviolet sterilizer; 800, Float flow meter. Detailed Implementation
[0033] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.
[0034] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0037] See Figure 1 As shown, this embodiment provides a multifunctional integrated nanofiltration pipeline direct drinking water device, including a raw water tank 100, with the input end connected to the municipal water supply pipeline;
[0038] The input end of the pretreatment device 200 is connected to the output end of the raw water tank 100;
[0039] A first ozone generator 310 and a micro-nano bubble generator 320 are connected together. The micro-nano bubble generator 320 is connected to the pretreatment device 200.
[0040] The precision filter device 400 has its input end connected to the output end of the pretreatment device 200, and the precision filter device 400 is also connected to the output end of the micro-nano bubble generator 320.
[0041] The second ozone generator 510 and the ozone mixer 520 are connected. The output end of the second ozone generator 510 is connected to the ozone mixer 520, and the input end of the ozone mixer 520 is connected to the output end of the precision filter device 400.
[0042] The input end of the pure water tank 600 is connected to the output end of the ozone mixer 520;
[0043] The input end of the end-of-line treatment device 700 is connected to the output end of the pure water tank 600, and the output end of the end-of-line treatment device 700 is used to deliver the treated water to the user.
[0044] It is understood that this utility model organically integrates multiple units, including the raw water tank 100, pretreatment device 200, precision filtration device 400, ozone generator, micro-nano bubble generator 320, pure water tank 600, and end-of-pipe treatment device 700, to achieve end-to-end water quality assurance from municipal water supply to direct drinking water. Firstly, the pretreatment device 200 effectively removes large particulate impurities, suspended solids, and some organic pollutants, providing a stable water quality foundation for subsequent precision filtration and nanofiltration stages. Simultaneously, the micro-nano bubble generator 320 works synergistically with the first ozone generator 310, achieving not only efficient oxidation and sterilization but also enhancing ozone solubility through micro-nano bubbles, thereby improving pollutant degradation efficiency. The precision filtration device 400 further removes fine particles and residual pollutants, ensuring water quality precision. The second ozone generator 510 and ozone mixer 520 enhance deep sterilization and oxidation treatment, ensuring that the water in the pure water tank 600 always maintains a low bacterial load and excellent taste. The 700 end-of-pipe treatment unit can be configured with functions such as ultraviolet disinfection and activated carbon polishing filtration as needed, ensuring the final guarantee of drinking water. The integrated design of the overall structure reduces the footprint and pipeline connection complexity, and lowers operating energy consumption and maintenance costs. The multi-stage treatment and dual ozone sterilization strategy significantly improves water quality safety and system redundancy, avoiding water quality hazards caused by the failure of a single link, and achieving an efficient, energy-saving, safe and sustainable direct drinking water supply.
[0045] In some embodiments of this application, the preprocessing apparatus 200 includes:
[0046] The input end of the quartz sand filter device 210 is connected to the output end of the raw water tank 100;
[0047] The input end of the activated carbon filter device 220 is connected to the output end of the quartz sand filter device 210.
[0048] The input end of the softening device tank 230 is connected to the output end of the activated carbon filter device 220.
[0049] In some embodiments of this application, the preprocessing apparatus 200 further includes:
[0050] The regenerated salt tank 240 is connected to the softening device tank 230 at its output end.
[0051] Understandably, the pretreatment unit 200, by sequentially setting up a quartz sand filter 210, an activated carbon filter 220, and a softening tank 230, achieves multi-stage pretreatment of raw water, significantly improving the stability and treatment effect of subsequent water treatment processes. Firstly, the quartz sand filter 210 efficiently removes suspended solids, silt, and large particulate impurities from the water, reducing the impact on subsequent equipment and the risk of clogging. Secondly, the activated carbon filter 220 effectively adsorbs residual chlorine, organic matter, and odors from the water, improving the taste and protecting delicate components such as nanofiltration membranes from oxidative damage. Thirdly, the softening tank 230 removes hardness ions such as calcium and magnesium from the water through ion exchange, preventing scaling in pipelines, membrane components, and terminal equipment, thereby extending system lifespan and reducing maintenance costs. The regeneration salt tank 240 further enhances the continuous operation capability of the softening tank 230, providing brine to achieve efficient resin regeneration and maintain long-term stable exchange performance. The overall multi-stage treatment structure not only improves water quality safety and system redundancy, but also allows for flexible adjustment of treatment strategies based on the raw water quality, creating a more stable operating environment for the nanofiltration system and subsequent precision filtration and disinfection processes.
[0052] In some embodiments of this application, the precision filtration device 400 includes:
[0053] The first filter tank 410 is filled with a polypropylene meltblown filter element, and the input end of the first filter tank 410 is connected to the output end of the pretreatment device 200.
[0054] The nanofiltration membrane module 420 has its input end connected to the output end of the first filter canister 410, its output end connected to the input end of the ozone mixer 520, and its nanofiltration membrane module 420 is also connected to the micro-nano bubble generator 320.
[0055] In some embodiments of this application, the nanofiltration membrane assembly 420 includes at least two nanofiltration membrane filters 421.
[0056] Understandably, the precision filtration device 400 achieves highly efficient and refined water treatment through the combination of a first filter tank 410 and a nanofiltration membrane module 420. Firstly, the first filter tank 410 is filled with a polypropylene melt-blown filter element, which effectively removes fine particulate matter, rust, colloids, and suspended impurities from the water, providing stable and clean inlet water conditions for the nanofiltration membrane, reducing the risk of membrane fouling and clogging, thereby extending the service life of the nanofiltration membrane. Secondly, the nanofiltration membrane module 420 can efficiently retain divalent and multivalent ions, organic micro-pollutants, some salts, and bacteria and viruses in the water, achieving deep purification and optimized mineral balance, resulting in safer and more palatable drinking water. Simultaneously, the interconnected design of the nanofiltration membrane module 420 and the micro / nano bubble generator 320 facilitates online cleaning of the nanofiltration membrane, fouling suppression, and improved operating efficiency. By employing at least two nanofiltration membrane filters 421, not only is the processing flow rate increased, but also a flexible operating mode of multi-membrane parallel or staged filtration is achieved, enhancing redundancy and stability, ensuring continuous water supply even when some membrane elements are maintained or replaced. The overall structure can effectively improve the filtration accuracy, operating efficiency and service life of nanofiltration systems.
[0057] In some embodiments of this application, the end-processing device 700 includes:
[0058] The second filter tank 710 is filled with a polypropylene meltblown filter element, and the input end of the second filter tank 710 is connected to the output end of the pure water tank 600.
[0059] The ultraviolet sterilizer 720 is installed on the water supply pipeline connected to the output end of the second filter tank 710.
[0060] Understandably, the end-of-pipe treatment unit 700 achieves further purification and safety assurance of pure water by incorporating a second filter tank 710 and an ultraviolet sterilizer 720. First, the second filter tank 710 is filled with a polypropylene melt-blown filter element, which effectively intercepts fine particles, pipe deposits, and tiny suspended impurities that may be re-introduced after the water has passed through the storage stage, ensuring clear and pure water. Second, the ultraviolet sterilizer 720, installed at the rear end of the second filter tank 710, uses high-intensity ultraviolet light to rapidly kill bacteria, viruses, and other microorganisms in the water without the need for any chemical agents, thus avoiding secondary pollution and maintaining the original flavor of the water. This combined design forms a dual protection mechanism of "physical filtration + physical sterilization," preventing water quality deterioration in the water delivery stage after the pure water tank 600 and ensuring that the end user receives safe drinking water that meets direct drinking standards.
[0061] In some embodiments of this application, the multifunctional integrated nanofiltration pipeline direct drinking water device further includes:
[0062] At least two float flow meters 800 are provided. One float flow meter 800 is installed on the water supply pipeline between the precision filter device 400 and the ozone mixer 520, and the other float flow meter 800 is installed on the wastewater pipeline connected to the output end of the precision filter device 400.
[0063] Understandably, the float flowmeter 800 can monitor and control the water flow in key stages in real time. The flowmeter located between the precision filtration unit 400 and the ozone mixer 520 can accurately determine the flow rate of the treated water, ensuring that the nanofiltration membrane and the ozone mixer 520 operate within their design range, thus improving water treatment efficiency and water quality stability. The flowmeter located between the precision filtration unit 400 and the second wastewater tank 920 can monitor the wastewater discharge, facilitating reasonable control of wastewater treatment and discharge, reducing water waste, and ensuring safe and reliable operation.
[0064] The working principle of this utility model is as follows: Municipal water supply first enters the raw water tank 100, and then passes through the pretreatment device 200 (quartz sand filtration, activated carbon filtration, and softening device) to remove large particulate impurities, suspended solids, residual chlorine, organic pollutants, and hardness ions in the water, providing stable influent for precision filtration. After oxidation, sterilization, and pollutant degradation by the synergistic action of the first ozone generator 310 and the micro-nano bubble generator 320, the water flows into the precision filtration device 400, which includes the first filter tank 410 with a polypropylene melt-blown filter element and the nanofiltration membrane assembly 420, achieving deep removal of fine particles, divalent and multivalent ions, organic micro-pollutants, and some bacteria and viruses, and inhibiting membrane fouling and online cleaning through micro-nano bubble-assisted membrane cleaning. Subsequently, the water enters the second ozone generator 510 and ozone mixer 520 for deep sterilization and oxidation treatment, and is then stored in the pure water tank 600. The end-of-line treatment device 700 further ensures water quality through the second filter tank 710 and the ultraviolet sterilizer 720, forming a dual guarantee of "physical filtration + physical sterilization". The 800 float flowmeter monitors the flow rate of treated water and wastewater in real time, ensuring that it operates under optimal conditions.
[0065] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A multifunctional integrated nanofiltration pipeline direct drinking water device, characterized in that, include: The raw water tank is connected to the municipal water supply pipeline at its input end; The pretreatment device has its input end connected to the output end of the raw water tank; A first ozone generator and a micro / nano bubble generator are connected together, and the micro / nano bubble generator is connected to the pretreatment device. The precision filtration device has its input end connected to the output end of the pretreatment device, and the precision filtration device is also connected to the output end of the micro-nano bubble generator; A second ozone generator and an ozone mixer, wherein the output end of the second ozone generator is connected to the ozone mixer, and the input end of the ozone mixer is connected to the output end of the precision filter device; A pure water tank, the input end of which is connected to the output end of the ozone mixer; The end-of-pipe treatment device has its input end connected to the output end of the pure water tank, and the output end of the end-of-pipe treatment device is used to deliver the treated water to the user.
2. The multifunctional integrated nanofiltration pipeline direct drinking water equipment according to claim 1, characterized in that, The pretreatment device includes: The quartz sand filter device has its input end connected to the output end of the raw water tank. The input end of the activated carbon filter is connected to the output end of the quartz sand filter. The softening device tank has its input end connected to the output end of the activated carbon filter.
3. The multifunctional integrated nanofiltration pipeline direct drinking water equipment according to claim 2, characterized in that, The pretreatment device further includes: The regenerated salt tank has its output end connected to the softening device tank.
4. The multifunctional integrated nanofiltration pipeline direct drinking water equipment according to claim 1, characterized in that, The precision filtration device includes: The first filter tank is filled with a polypropylene meltblown filter element, and the input end of the first filter tank is connected to the output end of the pretreatment device. The nanofiltration membrane module has its input end connected to the output end of the first filter canister, its output end connected to the input end of the ozone mixer, and its nanofiltration membrane module is also connected to the micro / nano bubble generator.
5. The multifunctional integrated nanofiltration pipeline direct drinking water equipment according to claim 4, characterized in that, The nanofiltration membrane assembly includes at least two nanofiltration membrane filters.
6. The multifunctional integrated nanofiltration pipeline direct drinking water equipment according to claim 1, characterized in that, The terminal processing device includes: The second filter tank is filled with a polypropylene meltblown filter element, and the input end of the second filter tank is connected to the output end of the pure water tank. An ultraviolet sterilizer is installed on the water supply pipeline connected to the output end of the second filter tank.
7. The multifunctional integrated nanofiltration pipeline direct drinking water equipment according to claim 6, characterized in that, The multifunctional integrated nanofiltration pipeline direct drinking water equipment also includes: At least two float flow meters are provided, one of which is installed on the water supply pipeline between the precision filter and the ozone mixer, and the other is installed on the wastewater pipeline connected to the output end of the precision filter.