High-quality drinking water direct drinking device suitable for villages

Abstract

The invention discloses a rural high-quality drinking water direct drinking device and belongs to the technical field of water treatment. The device comprises a pretreatment unit, a multi-stage treatment unit, a rear refining and mineralizing unit, a multi-point sterilization unit, a middle water tank, a water taking unit and an intelligent control center. By means of multi-stage filtration and multi-stage barriers, staged and graded targeted removal of pollutants is achieved, meanwhile, beneficial mineral elements in water are effectively reserved, and health risks caused by low-mineral-substance water generated by a reverse osmosis technology are avoided. The device is provided with a whole-course intelligent control system, integrates the Internet of Things technology, realizes the functions of water quality real-time monitoring, component pollution early warning, automatic backwashing and chemical cleaning, ultraviolet and ozone collaborative disinfection and killing, user code scanning payment for water taking and the like, and solves the problems of high-quality drinking water preparation, long-acting and stable operation of equipment, operation cost control and commercial revenue. The system is suitable for rural areas with complex water source conditions and weak operation and maintenance power, and has the advantages of healthy effluent, stable operation, intelligent management, economy and high efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drinking water treatment, in particular to a rural applicable high-quality drinking water direct drinking device. BACKGROUND

[0002] With the advancement of new rural construction and the improvement of people's living standards, the demand for high-quality drinking water in rural areas is increasingly urgent. However, the rural drinking water sources are mostly groundwater or surface water, and there are generally high hardness, excessive total bacteria, and complex pollution risks such as trace organic matter and heavy metals. At the same time, rural areas also face challenges such as weak water treatment professional operation and maintenance, high cost of decentralized water supply, and the need to cultivate user payment awareness.

[0003] Currently, the common household or community water treatment equipment mainly has the following problems: (1) excessive purification: although the widely used reverse osmosis (RO) technology can effectively remove various pollutants, it also almost removes all natural mineral elements (such as calcium, magnesium, potassium, etc.), and the produced pure water may affect the electrolyte balance of the human body if it is drunk for a long time. Studies have shown that long-term drinking of pure water may be associated with an increase in homocysteine (Hcy) levels in the human body, and Hcy is an independent risk factor for cardiovascular and cerebrovascular diseases. (2) Poor process adaptability: a single water treatment process is difficult to cope with the complex and variable water quality of rural water sources, which can easily cause system blockage and membrane pollution, resulting in reduced water production, frequent replacement of filter cartridges, and high operation and maintenance costs. (3) Insufficient health protection: traditional water supply equipment has weak secondary pollution prevention and control capabilities for water tanks and pipeline systems, lacks sustained and effective sterilization protection, and poses a risk to water quality safety. (4) Low degree of intelligence: lack of remote monitoring, online water quality monitoring, fault warning, mobile payment and other intelligent functions, making it difficult to meet the needs of rural decentralized operation and management, and resulting in low economic benefits.

[0004] Therefore, there is an urgent need to develop a high-quality drinking water direct drinking device that can not only deeply purify water quality and retain beneficial minerals, but also realize intelligent operation and low maintenance cost, especially for rural areas. SUMMARY

[0005] The purpose of the present application is to overcome the shortcomings of the prior art and provide a rural applicable high-quality drinking water direct drinking device. The device realizes the precise removal of pollutants by a separate and enhanced combined process, and retains beneficial mineral elements in the water. Through the installation of an intelligent control system throughout the process, problems such as high-quality drinking water preparation, backwater sterilization, and convenient revenue collection are simultaneously solved. Through process optimization and intelligent cleaning, the problem of membrane pollution is effectively solved, the service life is extended, and the operation cost is reduced.

[0006] To achieve the above purpose, the present application adopts the following technical solutions:

[0007] The application relates to a rural high-quality drinking water direct drinking device, which comprises a pretreatment unit, a multistage treatment unit, a post-treatment refining and mineralization unit, a multi-point sterilization unit, an intermediate water tank, a water taking unit and an intelligent control center. After raw water is preliminarily purified by the pretreatment unit, the raw water enters the multistage treatment unit, in which the pollutants are removed in stages (macro-microorganisms / heavy metals / specific ions), and beneficial minerals are reserved. Then, the water body enters the post-treatment refining and mineralization unit, and taste upgrading and mineralization treatment are realized. After the purified water is sterilized by a water supply ultraviolet sterilizer, the water is supplied to users through the water taking unit. The water in the pipeline is circulated back to the intermediate water tank in a time manner, is sterilized by a backwater ultraviolet sterilizer and is returned to the intermediate water tank, so that closed circulation sterilization guarantee is formed. The intelligent control center monitors and manages the whole process.

[0008] As a preferred technical scheme, the pretreatment unit comprises a multi-medium filter and a precision filter, which are used for removing suspended matters, colloids and large-particle impurities in water, reducing turbidity and providing protection for the subsequent treatment unit.

[0009] As a preferred technical scheme, the multistage treatment unit adopts a combined process of an ultrafiltration (UF) unit and a selective electric adsorption (ES) unit / nanofiltration (NF) unit. The ultrafiltration (UF) unit can effectively remove bacteria, viruses, macromolecular organic matters and other pollutants. The selective electric adsorption (ES) unit is arranged behind the UF unit, and heavy metal ions, part of excessive hardness ions and certain specific anions (such as nitrate) in water are selectively adsorbed by applying voltage on the electrode, and meanwhile, appropriate calcium ions and magnesium ions are allowed to pass through. This is a key unit for core mineral element reservation and excessive purification avoidance. The nanofiltration (NF) unit can effectively remove organic matters, pigments, bacteria, viruses and divalent ions by selecting nanofiltration membranes with specific molecular weight cut-off, and meanwhile, part of monovalent mineral salt ions are allowed to pass through, so that the balance between desalination and mineral reservation is realized.

[0010] As a preferred technical scheme, the device is provided with a concentrated water backflow and energy recovery system, and part of the concentrated water generated by the multistage treatment unit is backflowed to the front end of the pretreatment unit, so as to dilute the raw water and perform cross-flow flushing on the ultrafiltration membrane, thereby reducing the membrane pollution rate and improving the system recovery rate.

[0011] As a preferred technical scheme, the post-treatment refining and mineralization module comprises a post-treatment activated carbon filter and an optional mineralization filter core. The post-treatment activated carbon filter further improves the taste and removes peculiar smell; and the mineralization filter core can appropriately add trace elements beneficial to human bodies and stabilize the taste of water.

[0012] As a preferred technical solution, the multi-point sterilization unit includes: a water supply ultraviolet sterilizer, installed at the water outlet of the equipment, to instantly sterilize every drop of drinking water output; a return water ultraviolet sterilizer, installed in the circulating return water pipeline, to sterilize the circulating return water and prevent bacterial growth caused by stagnant water in the pipeline; and an ozone generator: optional, which can periodically perform air rinsing on the purified water tank to inhibit the reproduction of microorganisms in the tank.

[0013] As a preferred technical solution, the intelligent control center is the core of the device, comprising: Online water quality monitoring sensors: Real-time monitoring of key indicators of raw and produced water (such as TDS, turbidity, pH value, ozone / UV intensity), automatically discharging substandard water to ensure that tap water always meets standards. Programmable Logic Controller (PLC): Receives sensor signals and controls the start, stop, and operation of water pumps, valves, sterilization units, cleaning systems, etc. Remote communication module: Uploads equipment operation data, water quality data, and fault information to the cloud platform. User and management APP: Users can view water quality and make mobile payments for water via the APP; administrators can remotely monitor equipment status, handle alarms, and analyze revenue data. Pollution early warning and intelligent cleaning system: Automatically initiates physical forward washing, backwashing, or chemical cleaning programs (using built-in citric acid or dilute alkaline cleaning agents) based on operating time or pressure difference before and after the membrane, effectively controlling membrane fouling and significantly extending filter life. Intelligent disinfection: Regularly activates the UV and ozone systems to sterilize the water storage tank and pipes, preventing secondary pollution.

[0014] As a preferred technical solution, the water dispensing unit uses a pressure water storage tank with a built-in sterile bag to prevent air contact. The water dispensing faucet is equipped with a display screen and a QR code scanner, allowing users to scan the code to pay and dispense water.

[0015] The beneficial effects of this invention are:

[0016] ① Health and safety: Using a combination of UF and selective ES or NF processes, harmful pollutants are precisely removed while retaining beneficial minerals such as calcium and magnesium in the water. This avoids the health risks that may be associated with pure water produced by RO technology (such as the trend of increased homocysteine ​​levels), resulting in healthier water quality.

[0017] ② High efficiency and stability: The multi-stage separation and enhanced combination process is highly adaptable and has high processing efficiency. The intelligent cleaning system effectively alleviates membrane fouling, extends the life of core membrane elements, significantly improves system water production rate, and significantly reduces operating costs.

[0018] ③ Full-process sterilization: The system adopts a multi-point synergistic sterilization method of "supply water UV disinfection + return water UV disinfection + ozone assistance" to ensure the biological safety of the water from the water inlet to the user's cup and eliminate secondary pollution.

[0019] ④ Smart Operation: By using IoT technology, unmanned operation, remote monitoring, online payment, fault early warning and data analysis are achieved, which greatly reduces the operation and maintenance threshold in rural areas and improves the sustainability and economic returns of the project.

[0020] ⑤ Suitable for rural areas: The whole system is highly integrated, easy to install, and adaptable to the characteristics of rural water sources and management models, making it an ideal solution for improving the quality of rural drinking water.

[0021] This invention achieves segmented and targeted removal of pollutants through multi-stage filtration and multi-level barriers, while effectively retaining beneficial minerals in the water, avoiding the health risks that may arise from low-mineral water produced by reverse osmosis technology. The invention is equipped with a fully intelligent control system integrating IoT technology, enabling real-time water quality monitoring, component contamination early warning, automatic backwashing and chemical cleaning, synergistic disinfection with ultraviolet and ozone, and user payment via QR code for water dispensing. It simultaneously solves problems related to high-quality drinking water preparation, long-term stable equipment operation, operating cost control, and commercial revenue generation. It is particularly suitable for rural areas with complex water source conditions and limited maintenance capabilities, offering advantages such as healthy output water, stable operation, intelligent management, and cost-effectiveness. Attached Figure Description

[0022] Figure 1 This is a process flow diagram of a high-quality drinking water direct drinking device suitable for rural areas, as per this invention patent. Detailed Implementation

[0023] The present patent will be further described below with reference to the embodiments and accompanying drawings, but the present patent is not limited to the following embodiments.

[0024] like Figure 1 As shown in the figure, this invention patent provides a high-quality drinking water direct drinking device suitable for rural areas, which includes a pretreatment unit, a multi-stage treatment unit, a post-refining and mineralization unit, a multi-point sterilization unit, an intermediate water tank, a water intake unit, and a smart control center.

[0025] As a specific embodiment of the high-quality drinking water direct drinking device suitable for rural areas provided by this invention patent, please refer to [link / reference]. Figure 1After initial purification in the pretreatment unit, the raw water enters the multi-stage treatment unit, where pollutants are removed in stages and grades (macromolecules / microorganisms → heavy metals / specific ions) while retaining beneficial minerals. The water then enters the post-refining and mineralization unit for improved taste and mineralization. The purified water is then sterilized by a UV sterilizer before being dispensed to users through the water intake unit. The concentrated water produced after multi-stage purification is returned to the front end of the pretreatment unit to dilute the raw water and perform cross-flow flushing of the membrane, reducing membrane fouling rate and improving system recovery rate. Water in the pipeline is periodically circulated back, sterilized by a UV sterilizer, and then returned to the intermediate water tank, forming a closed-loop sterilization system. The entire process is monitored and managed by the intelligent control center.

[0026] In this embodiment, the pretreatment unit includes various pretreatment processes such as multi-media filters and precision filters to remove suspended solids, colloids, and large particulate impurities from water under various water source conditions, reduce turbidity, and provide protection for subsequent treatment units.

[0027] In this embodiment, the core purification unit employs a combined process of "ultrafiltration (UF) + selective electroadsorption (ES) unit / nanofiltration (NF)". The ultrafiltration (UF) unit effectively removes pollutants such as bacteria, viruses, and large organic molecules. The selective electroadsorption (ES) unit, positioned after the UF, selectively adsorbs heavy metal ions, some excess hardness ions, and certain specific anions (such as nitrates) from the water by applying voltage to the electrodes, while allowing appropriate amounts of beneficial mineral ions such as calcium and magnesium to pass through. This is the key unit for retaining mineral elements and avoiding over-purification. The nanofiltration (NF) unit, by selecting a nanofiltration membrane with a specific molecular weight cutoff, effectively removes organic matter, pigments, bacteria, viruses, and divalent ions while allowing some monovalent mineral salt ions to pass through, achieving a balance between desalination and mineral retention.

[0028] In this embodiment, the post-purification and mineralization module includes a post-activated carbon filter and an optional mineralization filter cartridge. The post-activated carbon further improves the taste and removes odors; the mineralization filter cartridge can be supplemented with trace elements beneficial to the human body to stabilize the taste of the water.

[0029] In this embodiment, the multi-point sterilization unit includes: a water supply UV sterilizer, installed at the water outlet of the equipment, which instantly sterilizes every drop of drinking water output; a return water UV sterilizer, installed in the circulating return water pipeline, which sterilizes the circulating return water to prevent bacterial growth caused by stagnant water in the pipeline; and an ozone generator, which is optional and can periodically purify the water tank with air to inhibit the growth of microorganisms in the tank.

[0030] In this embodiment, the intelligent control center is the core of the device, including: Online water quality monitoring sensors: Real-time monitoring of key indicators of raw and produced water (such as TDS, turbidity, pH value, ozone / UV intensity), automatically discharging substandard water to ensure that the tap water always meets standards. Programmable Logic Controller (PLC): Receives sensor signals and controls the start, stop, and operation of water pumps, valves, sterilization units, cleaning systems, etc. Remote communication module: Uploads equipment operation data, water quality data, and fault information to the cloud platform. User and management APP: Users can view water quality and make mobile payments for water via the APP; administrators can remotely monitor equipment status, handle alarms, and analyze revenue data. Pollution early warning and intelligent cleaning system: Automatically initiates physical forward washing, backwashing, or chemical cleaning programs (using built-in citric acid or dilute alkaline cleaning agents) based on operating time or pressure difference before and after the membrane, effectively controlling membrane fouling and significantly extending filter life. Intelligent disinfection: Regularly activates the UV and ozone systems to sterilize the water storage tank and pipes, preventing secondary pollution.

[0031] In this embodiment, the water dispensing unit uses a pressure water storage tank with a built-in sterile bag to prevent air contact. The water faucet is equipped with a display screen and a QR code scanner, allowing users to scan the code to pay and dispense water.

[0032] The effective advantages of this invention, a high-quality direct drinking water device suitable for rural areas, are as follows: This invention employs a separation-enhanced combined process, using multi-stage filtration and multi-level barriers to achieve segmented and targeted removal of pollutants while effectively retaining beneficial minerals in the water. This avoids the health risks that may arise from low-mineral water produced by reverse osmosis technology. The device is equipped with a fully intelligent control system integrating IoT technology, enabling real-time water quality monitoring, component contamination early warning, automatic backwashing and chemical cleaning, synergistic disinfection with ultraviolet and ozone, and user payment via QR code. It simultaneously solves the problems of high-quality drinking water preparation, long-term stable equipment operation, operating cost control, and commercial revenue generation, making it particularly suitable for rural areas with complex water source conditions and limited maintenance capabilities.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its concept and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A rural applicable high quality drinking water direct drinking device, characterized in that, The device comprises a pretreatment unit, a multi-stage treatment unit, a post-treatment refining and mineralization unit, a multi-point sterilization unit, a water taking unit and an intelligent control center. The pretreatment unit comprises a multi-medium filter and a precision filter. The multi-stage treatment unit comprises an ultrafiltration assembly, a selective electric adsorption assembly and a nanofiltration assembly. The post-treatment refining and mineralization unit comprises a post-treatment activated carbon filter and an optional mineralization filter core. The multi-point sterilization unit comprises a water supply ultraviolet sterilizer and a backwater ultraviolet sterilizer. The intelligent control center comprises water quality online monitoring sensors, a PLC controller, a remote communication module and an intelligent cleaning system. Raw water enters the multi-medium filter of the pretreatment unit through the water inlet, and the water outlet of the multi-medium filter is communicated with the water inlet of the precision filter; the water outlet of the precision filter is communicated with the water inlet of the ultrafiltration assembly of the multi-stage treatment unit, the water outlet of the ultrafiltration assembly is communicated with the water inlet of the selective electric adsorption assembly, the water outlet of the selective electric adsorption assembly is communicated with the water inlet of the nanofiltration assembly, and the water outlet of the nanofiltration assembly is communicated with the water tank; the water outlet of the water tank is communicated with the water inlet of the post-treatment activated carbon filter of the post-treatment refining and mineralization unit, and the water outlet of the post-treatment activated carbon filter is communicated with the water inlet of the optional mineralization filter core; the water outlets of the optional mineralization filter core are respectively communicated with the water supply ultraviolet sterilizer and the backwater ultraviolet sterilizer of the multi-point sterilization unit, and the water outlet of the water supply ultraviolet sterilizer is communicated with the water inlet of the water taking unit; the water outlet of the backwater ultraviolet sterilizer is communicated with the water inlet of the water tank.

2. The rural high quality potable water direct drinking device according to claim 1, characterized in that, The device further comprises a concentrated water backflow and energy recovery system, the water inlet of the concentrated water backflow and energy recovery system is communicated with the water outlet of the selective electric adsorption assembly, and the water outlet of the concentrated water backflow and energy recovery system is communicated with the water inlet of the multi-medium filter of the pretreatment unit.

3. The rural high quality drinking water direct drinking device according to claim 1, characterized in that, The pretreatment unit is used for removing suspended solids, colloids, large particle impurities and reducing turbidity in water.

4. The rural high quality potable water direct drinking device according to claim 1, characterized in that, The ultrafiltration assembly is used for removing pollutants, and the pollutants include bacteria, viruses and macromolecular organic matters; the selective electric adsorption assembly selectively adsorbs heavy metal ions, hardness ions and anions in water by applying voltage on the electrode.

5. The rural high quality potable water direct drinking device according to claim 1, wherein, The mineralization filter core is made of natural strontium-rich, metasilicic acid or calcium-magnesium composite mineralization material.

6. The rural high quality potable water direct drinking device according to claim 1, characterized in that, The water supply ultraviolet sterilizer is arranged at the water outlet of the device, and the backwater ultraviolet sterilizer is arranged on the circulating backwater pipeline.

7. The device for rural use of high quality drinking water according to claim 1, characterized in that, The water taking unit is a pressure storage barrel with an internal sterile bag.

8. The rural high quality potable water direct drinking device according to claim 1, characterized in that, The water quality online monitoring sensors of the intelligent control center are used for monitoring raw water and produced water quality; the PLC controller is used for receiving sensor signals and controlling the start-stop and operation of the pretreatment unit, the multi-stage treatment unit, the post-treatment refining and mineralization unit and the multi-point sterilization unit; the remote communication module is used for uploading device operation data, water quality data and fault information to a cloud platform; and the intelligent cleaning system triggers automatic air-water backwashing of the membrane based on differential pressure or running time and triggers low-concentration chemical cleaning online circulation cleaning based on a membrane pollution model.

9. The rural high quality potable water direct drinking device according to claim 1, characterized in that, The intelligent control center is further connected with a payment system, and supports IC card and code scanning mobile payment for water taking.

10. The rural high quality potable water direct drinking device according to claim 1, wherein, The rural high-quality drinking water direct drinking device is provided with a circulating pipeline, water stored at the end of the water taking unit is led back to the water tank inlet, and a backwater ultraviolet sterilizer is arranged on the circulating pipeline.

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