A comprehensive treatment method for low-sodium softening and deuterium preserving natural mineral water

Abstract

This invention discloses a comprehensive treatment method for natural mineral water that softens and retains low deuterium levels while maintaining low sodium content. It relates to the field of drinking water treatment technology and includes sequential physical pretreatment of the raw natural mineral water, selective separation based on a biomimetic ion channel composite membrane, in-situ mineralization reconstruction under AI adaptive control of a composite physical field, and aseptic final filling. The biomimetic ion channel composite membrane is a heterogeneous structure membrane formed by embedding a two-dimensional covalent organic framework material within a one-dimensional metal-organic framework material. Its nanochannel pore size is [not specified], and the inner wall of the channel is modified with crown ether derivative functional groups and carboxylic acid groups. The crown ether derivative functional groups selectively retain [not specified] through coordination, while the carboxylic acid groups selectively retain [not specified] and [not specified] through electrostatic repulsion, allowing [not specified] and metasilicic acid ions to permeate without being retained. During the treatment process, a multi-parameter online sensing system monitors the concentrations of [not specified], total hardness, [not specified], and metasilicic acid concentration in the raw water and the treated water in real time.

Description

Technical Field

[0001] This invention relates to the field of drinking water treatment technology, and in particular to a comprehensive treatment method for natural mineral water that softens and retains low deuterium levels while maintaining low sodium content. Background Technology

[0002] Drinking water treatment technology refers to the engineering technology system that uses physical, chemical, biological, or combined methods to purify, disinfect, soften, defluorinate, remove arsenic, and mineralize raw water (such as surface water, groundwater, and natural mineral water) to remove harmful substances (such as pathogenic microorganisms, heavy metals, excess ions, and organic pollutants) while retaining or optimizing beneficial components. Ultimately, the goal is to ensure that the water quality meets the requirements of national standards such as the "Standards for Drinking Water Quality" (GB 5749) or "Standards for Drinking Natural Mineral Water" (GB 8537), resulting in safe, healthy, and palatable water products suitable for direct consumption. This technology is widely used in municipal water supply, bottled water production, household water purification, and the preparation of special functional waters.

[0003] Traditional membrane materials lack the ability to recognize specific ions at the molecular level, making it impossible to achieve precise sieving based on ion size, charge, hydration energy, and coordination characteristics. This results in a one-size-fits-all approach to processing, which is difficult to meet the needs of developing differentiated products. Even if beneficial ions are retained, if they exist in a free state in water, they are prone to combining with carbonate, sulfate, and other ions to form macroscopic precipitates during storage or drinking, affecting the sensory quality, shelf-life stability, and bioavailability of the product. Summary of the Invention

[0004] In view of the aforementioned existing problems, the present invention is proposed.

[0005] Therefore, this invention provides a comprehensive treatment method for natural mineral water that softens with low sodium and retains low deuterium. This solves the problem that traditional membrane materials lack the ability to recognize specific ions at the molecular level, making it impossible to achieve precise sieving based on ion size, charge, hydration energy, and coordination characteristics. This results in a one-size-fits-all treatment process that is difficult to meet the needs of differentiated product development. Furthermore, even if beneficial ions are retained, if they exist in the water in a free state, they are prone to combining with carbonate, sulfate, etc., to form macroscopic precipitates during storage or drinking, affecting the sensory quality, shelf-life stability, and bioavailability of the product.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] This invention provides a comprehensive treatment method for natural mineral water that softens and retains low deuterium levels while maintaining low sodium content, comprising:

[0008] The natural mineral water raw water undergoes physical pretreatment, selective separation based on a biomimetic ion channel composite membrane, in-situ mineralization reconstruction under AI adaptive control of a composite physical field, and terminal aseptic filling.

[0009] The biomimetic ion channel composite membrane is a heterostructure membrane formed by embedding a two-dimensional covalent organic framework material within a one-dimensional metal-organic framework material, and its nanochannel pore size is [missing information]. The inner wall of the channel is modified with crown ether derivative functional groups and carboxylic acid groups. The crown ether derivative functional groups selectively retain [the channel] through coordination. The carboxylic acid group selectively retains [the product] through electrostatic repulsion. and ,make Metasilicate ions are basically not retained and pass through;

[0010] During the treatment process, a multi-parameter online sensing system is used to monitor the levels of pollutants in both the raw water and the product water in real time. Concentration, total hardness, The concentration of metasilicic acid and other substances are monitored and the data is input into the AI ​​adaptive control system.

[0011] The AI ​​adaptive control system has a pre-trained prediction-control model built in. The prediction-control model is trained based on historical water quality datasets and is used to predict future water quality change trends based on current monitoring data. It also outputs control commands for adjusting the operating parameters of the biomimetic ion channel composite membrane and the parameters applied to the composite physical field.

[0012] The selectively separated permeate is introduced into a multifunctional reaction chamber. Under the control commands output by the AI ​​adaptive control system, a composite physical field formed by the superposition of a 1–10 MHz pulsed electromagnetic field and an ultrasonic field is applied to induce the permeate. , And in situ formation of strontium-carbonate or silicon-strontium composite nanomineral clusters with a particle size of less than 10 nm from metasilicic acid;

[0013] After being treated by a composite physical field, the mineral water is sterilized and filtered at the terminal and then aseptically bottled to obtain a natural mineral water product that is low in sodium, softened, and rich in active beneficial trace elements.

[0014] As a preferred embodiment of the comprehensive treatment method for softening and preserving deuterium-low natural mineral water according to the present invention, the one-dimensional metal-organic framework material is ZIF-8 crystal with sub-nanometer pores, and the two-dimensional covalent organic framework material is TpPa-1 with regular hexagonal pores. The two are grown in a confined space at the interface to form a composite membrane with interconnected ion transport channels.

[0015] Furthermore, the preparation of the composite membrane includes the following steps: coating a ZIF-8 nanocrystal dispersion onto a polysulfone ultrafiltration base membrane, followed by immersion in a monomer solution composed of 1,3,5-tricarboxymethyl phloroglucinol (Tp) and p-phenylenediamine (Pa-1), and reacting at 70°C for 6 hours to allow TpPa-1 to polymerize in situ on the surface of the ZIF-8 layer, forming a selective layer with a thickness of approximately 300 nm; scanning electron microscopy reveals that the membrane surface exhibits a dense, pinhole-free structure.

[0016] As a preferred embodiment of the comprehensive treatment method for softening and preserving deuterium-low natural mineral water according to the present invention, wherein: the functional group of the crown ether derivative is benzo-15-crown-5, and the carboxylic acid group is derived from the surface-exposed carboxyl group of the terephthalic acid ligand.

[0017] Furthermore, the benzo-15-crown-5 is grafted onto the membrane surface via a 3-aminopropyltriethoxysilane coupling agent; static immersion experiments show that, in simulated raw water ( 50 mg / L, After treatment for 2 hours in 0.3 mg / L (pH=7.2), the modified membrane showed [response to...]. The removal rate can reach 82%, while The loss rate is less than 5%, demonstrating good selectivity.

[0018] As a preferred embodiment of the comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water described in this invention, the multi-parameter online sensing system includes a sodium ion selective electrode, a calcium-magnesium composite electrode, and an ultraviolet spectrophotometer, which are used for real-time monitoring. Concentration, total hardness, and metasilicic acid concentration.

[0019] Furthermore, the concentration of metasilicic acid was determined offline using the silicomolybdenum blue spectrophotometric method specified in GB 8538-2022, and the results were fed back to the AI ​​system for model calibration; the online system mainly relies on Real-time adjustment based on hardness data.

[0020] As a preferred embodiment of the comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water described in this invention, the historical water quality dataset includes raw water quality fluctuation data from the same water source for at least one hydrological year, covering the high-water season, normal-water season, and low-water season. and Concentration changes.

[0021] As a preferred embodiment of the comprehensive treatment method for softening and preserving deuterium-low natural mineral water according to the present invention, the biomimetic ion channel composite membrane operates at a pressure of 0.4–0.7 MPa and a temperature of 25–30℃.

[0022] Furthermore, under these operating conditions, the treated wastewater, as tested by a third-party testing agency, exhibited [specific characteristics / performance]. The concentration remained stable at 15–18 mg / L, and the total hardness was 40–48 mg / L (as per...). count), The retention rate is ≥95%, which meets the design target.

[0023] As a preferred embodiment of the comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water described in this invention, wherein: the pulsed electromagnetic field frequency is 2–8 MHz, and the ultrasonic power density is... .

[0024] Furthermore, the composite physical field treatment time was 10–15 minutes; transmission electron microscopy (TEM) showed that uniformly distributed nano-mineral clusters were formed in the treated water, and no macroscopic precipitation was observed.

[0025] As a preferred embodiment of the comprehensive treatment method for softening and preserving deuterium-low-sodium natural mineral water according to the present invention, the average particle size of the strontium-carbonate or silicon-strontium composite nanomineral clusters is 6±1 nm.

[0026] Furthermore, the particle size data was obtained by cross-referencing dynamic light scattering (DLS) and transmission electron microscopy (TEM), and the particles showed no obvious aggregation after being stored at 4°C in the dark for 30 days.

[0027] As a preferred embodiment of the comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water described in this invention, wherein: the resulting natural mineral water product contains... Content ≤20 mg / L, total hardness (as...) (Calculated) ≤50 mg / L, Content ≥0.20 mg / L, metasilicic acid content ≥25.0 mg / L.

[0028] Furthermore, all the above indicators were tested according to the standard methods of GB 8537-2018 and GB 8538-2022, and the water temperature of the water source is maintained at 26-28℃ all year round, which meets the definition conditions of metasilicic acid type mineral water; the test reports of the three consecutive batches of products were issued by the provincial food inspection institute.

[0029] As a preferred embodiment of the comprehensive treatment method for softening and preserving low-deuterium natural mineral water according to the present invention, the physical pretreatment includes sand filtration, activated carbon adsorption, and 1–5 μm precision filtration.

[0030] Furthermore, the sand filter uses a double-layer filter media (anthracite on top and quartz sand on the bottom), the activated carbon is coconut shell carbon with an iodine value ≥950 mg / g, and the precision filter uses a replaceable polypropylene filter element, which automatically alarms and prompts for replacement when the pressure difference exceeds 0.1 MPa.

[0031] The beneficial effects of this invention are as follows: through the precise pore design and functional modification of the biomimetic ion channel composite membrane, the efficient and selective removal of sodium ions and hardness ions is achieved, while effectively retaining the beneficial trace elements in natural mineral water; combined with AI adaptive regulation and composite physical field in-situ mineralization technology, not only is the water quality consistently up to standard, but the formation of active mineral forms is also promoted, improving the functionality and bioavailability of the product, and overcoming the inherent defects of traditional water treatment processes in terms of component retention, energy consumption and intelligent control. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a flowchart of the comprehensive treatment method for natural mineral water with low sodium softening and low deuterium retention in Example 1. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0037] Example 1, referring to Figure 1 This is the first embodiment of the present invention, which provides a comprehensive treatment method for natural mineral water that softens and retains low deuterium while maintaining low sodium content, comprising:

[0038] Physical pretreatment: Raw water (pH 7.2–7.5, water temperature 27℃) taken from a deep granite fissure aquifer was passed sequentially through a double-layer sand filter (upper layer anthracite particles 0.8–1.2 mm, lower layer quartz sand particles 0.5–0.8 mm), a coconut shell activated carbon column with an iodine value ≥950 mg / g, and a 5 μm polypropylene precision filter to remove suspended solids, organic matter, and colloids.

[0039] Selective separation: The pretreated effluent is passed through a membrane module composed of a ZIF-8 / TpPa-1 heterogeneous composite membrane. The membrane preparation method is as follows:

[0040] ZIF-8 nanocrystals with an average particle size of 80 nm were dispersed in ethanol (solid content 1.5 wt%) and coated onto the surface of a polysulfone ultrafiltration membrane (molecular weight cutoff 50 kDa) using a vacuum filtration method to form a ZIF-8 intermediate layer with a thickness of about 150 nm.

[0041] The composite substrate was then immersed in a monomer solution (1,3,5-tricarboxymethyl phloroglucinol Tp and p-phenylenediamine Pa-1 in a 1:1 molar ratio, with a mixture of mesitylene / n-butanol as the solvent) and reacted at 70°C under a nitrogen atmosphere for 6 hours, allowing TpPa-1 to polymerize in situ on the surface of the ZIF-8 layer, forming a dense selective layer with a thickness of approximately 300 nm.

[0042] The membrane surface was treated with 3-aminopropyltriethoxysilane (APTES) vapor for 30 minutes to introduce amino groups; then it was reacted with benzo-15-crown-5 in DMF at 60°C for 4 hours to achieve crown ether grafting; the carboxylic acid group was derived from the uncoordinated terephthalic acid derivative in the ZIF-8 ligand 2-methylimidazole exposed on the inner wall of the channel.

[0043] Scanning electron microscopy (SEM) showed that the film surface was continuous and free of pinholes, while transmission electron microscopy (TEM) confirmed that ZIF-8 and TpPa-1 formed a through heterogeneous interface.

[0044] AI Adaptive Control: Multi-parameter online sensing system (sodium ion selective electrode, calcium-magnesium composite electrode) collects influent and product water data in real time. Concentration and total hardness data are input at a frequency of 1 Hz to an LSTM predictive-control model deployed on an edge computing unit. This model is trained based on water quality fluctuation data from the same water source over the past 12 months and can predict ion concentration trends 15 minutes in advance, and output adjustment commands for membrane operating pressure (0.4–0.7 MPa) and crossflow velocity.

[0045] Composite physical field mineralization reconstruction: Separated permeate enters a stainless steel multifunctional reaction chamber, where a 5MHz pulsed electromagnetic field (50% duty cycle) is applied under AI commands. A composite physical field formed by the superposition of ultrasonic fields was applied for 12 minutes. This field induced residual substances in the water. The metasilicate groups undergo directional assembly, forming in-situ silicon-strontium composite nanomineral clusters with a particle size of approximately 6 nm.

[0046] Terminal filling: After passing through a 0.22 μm polyethersulfone sterilization filter, the contents are sealed in food-grade PET bottles using a nitrogen-replacement aseptic filling line.

[0047] The product was tested and found to be... ≤20 mg / L, total hardness ≤50 mg / L (as per count), The retention rate is ≥95%, and the metasilicic acid content is ≥25 mg / L, which meets the definition of metasilicic acid-type natural mineral water in GB 8537—2018. Furthermore, no precipitation occurs after 30 days of storage at room temperature.

[0048] Example 2, the second embodiment of the present invention, addresses natural mineral water with excessive fluoride content (>1.5 mg / L) but rich in strontium. It provides a method for the safe treatment of high-fluoride raw water and the synergistic retention of beneficial elements, including:

[0049] Physical pretreatment: Same as in Example 1.

[0050] Selective separation: The same ZIF-8 / TpPa-1 composite membrane substrate as in Example 1 was used, but the functionalization modification was adjusted as follows:

[0051] The crown ether derivative is replaced with a sulfonic acid group that has a weak repulsive effect on fluoride ions (by grafting with sulfophenylsilane).

[0052] Retaining the carboxylic acid group to maintain the effect Electrostatic repulsion.

[0053] This design utilizes the large hydration radius of fluoride ions ( ) and negative charge, in The nanochannels are partially trapped due to both steric hindrance and charge repulsion.

[0054] AI control strategy: Add a fluoride ion selective electrode to the online system, and expand the input dimension of the AI ​​model to... Concentration. When detected. At this time, the system automatically increases the operating pressure to 0.65 MPa and fine-tunes the crossflow velocity to extend the residence time and enhance fluoride removal.

[0055] Composite physical field processing: The pulsed electromagnetic field frequency was set to 3 MHz, and the ultrasonic power... ,Promote and Metastable state is formed Nanoclusters (<10 nm) avoid macroscopic precipitation and protect It does not participate in the reaction.

[0056] Terminal processing: Same as in Example 1.

[0057] Result: The fluoride content in the produced water decreased to [a certain level]. (Complies with GB 5749 limits), strontium retention rate >90%, metasilicic acid loss <8%, achieving the synergistic goal of safety and retention of functional components.

[0058] Example 3 is the third embodiment of the present invention. This embodiment is applicable to lithium-sodium coexisting salt lake mineral water and provides a method for selective purification and active lithium enrichment of lithium-rich natural mineral water, including:

[0059] Physical pretreatment: Due to the high TDS of the raw water, an additional 5 μm security filtration and activated carbon adsorption are added.

[0060] Membrane functionalization customization:

[0061] 12-crown-4 ether is grafted onto the inner wall of the ZIF-8 / TpPa-1 composite membrane channel (selectivity for Li⁺ is higher than that for Na⁺).

[0062] The density of carboxylic acid groups was reduced to 60% of that in the original embodiment to reduce the impact on... Non-specific rejection.

[0063] AI control logic: Model-focused monitoring Ratio. When the ratio is <0.01, the system reduces the operating pressure to 0.45 MPa and extends the operating time. Through a time window; simultaneously enhance the intensity of the composite physical field to compensate for mineralization efficiency.

[0064] Composite physical field: Employing an 8 MHz high-frequency pulsed electromagnetic field (beneficial for small ion response) and Ultrasound, induction and form Nanoclusters (particle size 5–8 nm).

[0065] Product characteristics: Final product ≤25 mg / L, ≥0.4 mg / L, suitable for specific health beverage base liquids, with a bioavailable lithium content >85% (as tested in vitro using simulated gastrointestinal fluid).

[0066] Example 4 is the fourth embodiment of the present invention. In this embodiment, the total hardness is >300 mg / L (as shown in the figure). This paper presents a method for softening and improving the taste of high-hardness natural mineral water from limestone caves (designed by the author), including:

[0067] Physical pretreatment: Add a first-stage manganese sand filter to remove iron and manganese oxides.

[0068] Membrane design adjustments:

[0069] No crown ether modification was used (because the sodium content was normal);

[0070] Strengthen the density of carboxylic acid groups (by introducing additional terephthalic acid through post-synthetic modification).

[0071] Mainly relies on electrostatic repulsion for efficient removal .

[0072] AI Strategy: The model optimizes hardness removal rate and energy consumption ratio. When hardness > 280 mg / L, a stepped pressurization procedure is automatically activated. ), to avoid membrane fouling.

[0073] Innovative applications of composite physics fields:

[0074] The pulsed electromagnetic field frequency is 2 MHz (which is beneficial for large ion response).

[0075] Ultrasonic power Processing time: 15 minutes;

[0076] Promotes residue and It forms a stable colloid rather than a sediment, thus improving the "astringent" taste.

[0077] Product benefits: Hardness reduced to 45–50 mg / L, mild taste, and trace element (Zn, Se) retention rate >92%, suitable as a drinking water source for infants and young children.

[0078] Comparative Example 1: Commercial Reverse Osmosis Membranes as Replacements for Bionic Composite Membranes

[0079] The raw water in Example 1 was treated using an SWC5 reverse osmosis membrane; although Reduced to 10 mg / L, hardness <30 mg / L, but The loss reached 62%, and the loss of metasilicic acid was 58%. The product did not meet the requirements of GB 8537 for characteristic indicators, proving that ordinary membranes cannot achieve selective retention.

[0080] Comparative Example 2: Unfunctionalized ZIF-8 / TpPa-1 membrane

[0081] The same membrane structure was used, but the grafting steps of crown ether and carboxylic acid groups were omitted. Results showed: The removal rate was only 45%. Removal rate 52%, The large fluctuations in transmittance (70–88%) demonstrate that functionalization is a necessary condition for achieving high selectivity.

[0082] Comparative Example 3: Cancellation of Composite Physics Field Processing

[0083] The remaining steps are the same as in Example 1, but the separated permeate is directly bottled. A white flocculent precipitate appears after 30 days (confirmed by XRD). Furthermore, the bioavailability of metasilicic acid decreased by 35% (in vitro simulation test), proving that the composite physical field is indispensable for the stabilization of nano-minerals.

[0084] In summary, this invention achieves highly efficient and selective removal of sodium ions and hardness ions through precise pore design and functional modification of the biomimetic ion channel composite membrane, while effectively retaining beneficial trace elements in natural mineral water. Combined with AI adaptive regulation and in-situ mineralization technology using composite physical fields, it not only ensures stable water quality compliance but also promotes the formation of active mineral forms, enhancing the product's functionality and bioavailability, and overcoming the inherent defects of traditional water treatment processes in terms of component retention, energy consumption, and intelligent control.

[0085] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A comprehensive treatment method for natural mineral water that softens and retains low deuterium while maintaining low sodium content, characterized in that: include: The natural mineral water raw water undergoes physical pretreatment, selective separation based on a biomimetic ion channel composite membrane, in-situ mineralization reconstruction under AI adaptive control of a composite physical field, and terminal aseptic filling. The biomimetic ion channel composite membrane is a heterostructure membrane formed by embedding a two-dimensional covalent organic framework material within a one-dimensional metal-organic framework material, and its nanochannel pore size is [missing information]. The inner wall of the channel is modified with crown ether derivative functional groups and carboxylic acid groups. The crown ether derivative functional groups selectively retain [the channel] through coordination. The carboxylic acid group selectively retains [the product] through electrostatic repulsion. and ,make Metasilicate ions are basically not retained and pass through; During the treatment process, a multi-parameter online sensing system is used to monitor the levels of pollutants in both the raw water and the product water in real time. Concentration, total hardness, The concentration of metasilicic acid and other substances are monitored and the data is input into the AI ​​adaptive control system. The AI ​​adaptive control system has a pre-trained prediction-control model built in. The prediction-control model is trained based on historical water quality datasets and is used to predict future water quality change trends based on current monitoring data. It also outputs control commands for adjusting the operating parameters of the biomimetic ion channel composite membrane and the parameters applied to the composite physical field. The selectively separated permeate is introduced into a multifunctional reaction chamber. Under the control commands output by the AI ​​adaptive control system, a composite physical field formed by the superposition of a 1–10 MHz pulsed electromagnetic field and an ultrasonic field is applied to induce the permeate. , And in situ formation of strontium-carbonate or silicon-strontium composite nanomineral clusters with a particle size of less than 10 nm from metasilicic acid; After being treated by a composite physical field, the mineral water is sterilized and filtered at the terminal and then aseptically bottled to obtain a natural mineral water product that is low in sodium, softened, and rich in active beneficial trace elements.

2. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 1, characterized in that: The one-dimensional metal-organic framework material is ZIF-8 crystal with sub-nanometer pores, and the two-dimensional covalent organic framework material is TpPa-1 with regular hexagonal pores. The two are grown in a confined space at the interface to form a composite membrane with interconnected ion transport channels.

3. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 2, characterized in that: The crown ether derivative has a functional group of benzo-15-crown-5, and the carboxylic acid group is derived from the surface-exposed carboxyl group of the terephthalic acid ligand.

4. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 3, characterized in that: The multi-parameter online sensing system includes a sodium ion selective electrode, a calcium-magnesium composite electrode, and an ultraviolet spectrophotometer, which are used for real-time monitoring. Concentration, total hardness, and metasilicic acid concentration.

5. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 4, characterized in that: The historical water quality dataset contains raw water quality fluctuation data for at least one hydrological year from the same water source, covering the high-water season, normal-water season, and low-water season. and Concentration changes.

6. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 5, characterized in that: The biomimetic ion channel composite membrane operates at a pressure of 0.4–0.7 MPa and a temperature of 25–30 °C.

7. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 6, characterized in that: The pulsed electromagnetic field frequency is 2–8 MHz, and the ultrasonic power density is... .

8. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 7, characterized in that: The average particle size of the strontium-carbonate or silicon-strontium composite nanomineral clusters is 6±1 nm.

9. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 8, characterized in that: The obtained natural mineral water products Content ≤20 mg / L, total hardness (as...) (Calculated) ≤50 mg / L, Content ≥0.20mg / L, metasilicic acid content ≥25.0 mg / L.

10. The comprehensive treatment method for low-sodium softening and deuterium-retaining natural mineral water as described in claim 9, characterized in that: The physical pretreatment includes sand filtration, activated carbon adsorption, and 1–5 μm precision filtration.

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