Lithium type physiotherapy water and preparation method thereof

Abstract

The invention provides lithium type physiotherapy water and a preparation method thereof, and belongs to the field of health care. The preparation method of the lithium type physiotherapy water comprises the following steps: (1) taking thermal spring water, and adjusting the pH value to 5-8; and (2) evaporating and concentrating the thermal spring water of which the pH is adjusted in the step (1) to 10-50 times of concentration multiple, so as to obtain the lithium type physiotherapy water. According to the lithium type physical therapy water, the hot spring is used as a raw material, and the lithium type physical therapy water meeting the physical therapy hot mineral water standard is prepared by adopting a specific method. The lithium type physical therapy water has high physical therapy component and beneficial component content, and has great potential in physical therapy effect; meanwhile, the lithium-type physical therapy water meets the IV-class standard of the underground water quality standard, and is good in safety when being used as bath water. The invention provides more hot spring utilization forms, can expand the utilization way of hot spring resources, and has a good application prospect.

Description

Technical Field

[0001] This invention belongs to the field of health care, specifically relating to a lithium-type therapeutic water and its preparation method. Background Technology

[0002] Therapeutic water generally refers to water that utilizes its physical and chemical properties to act on the human body in specific ways to achieve therapeutic, rehabilitative, or health-preserving purposes. It includes various types, such as ordinary warm water and water containing specific minerals or trace elements. This water can exert therapeutic effects by immersing, rinsing, or spraying, providing temperature, chemical, and mechanical stimulation to the body. Lithium-type therapeutic water is a special type of therapeutic water, characterized by a high concentration of lithium. According to the "Geological Exploration Specification for Geothermal Resources" (GB / T11615-2010), lithium ion concentrations of 1 mg / L or higher are considered lithium-type therapeutic water with medical value. Lithium is a beneficial trace element with various physiological functions, such as regulating the stability of the nervous system and promoting metabolism. Lithium-type therapeutic water usually originates from natural mineral springs formed under specific geological conditions and is rich in trace elements such as lithium. Lithium-type therapeutic water can be used for drinking or immersion, and it has a certain promoting effect on human health and disease recovery.

[0003] Extracting lithium-type therapeutic water from natural water resources is one method for preparing lithium-type therapeutic water, a method that utilizes abundant resources and has a wide range of raw material sources. Hot springs are a type of natural water resource, characterized by their abundance and richness in various minerals. Bathing in hot springs is currently the primary method of utilizing these resources, resulting in low utilization efficiency. If hot spring resources could be processed into lithium-type therapeutic water with medicinal value, it would be of great significance for the development and utilization of hot springs. However, there are currently no reports on how to successfully prepare lithium-type therapeutic water with medicinal value from hot springs. Summary of the Invention

[0004] The purpose of this invention is to provide a lithium-type therapeutic water, its preparation method, and its uses.

[0005] This invention first provides a lithium-type therapeutic water, the preparation method of which includes the following steps: (1) Take lithium-containing hot spring water and adjust the pH to 5-8; (2) Evaporate and concentrate the hot spring water after pH adjustment in step (1) to a concentration ratio of 10-50 times to obtain lithium-type therapeutic water.

[0006] Furthermore, In step (1), the pH is adjusted to 4-6; And / or, in step (2), the evaporation concentration method is water bath evaporation concentration or hot air evaporation concentration; And / or, in step (2), concentrate to a concentration factor of 50 times.

[0007] Preferably, in step (1), the pH is adjusted to 6.

[0008] Furthermore, In step (1), the pH is adjusted using HCl and NaOH; And / or, in step (2), the temperature of the water bath evaporation concentration is 90~100℃; the stirring speed is maintained at 100~300 r / min during the water bath evaporation concentration; And / or, in step (2), the temperature of the hot air evaporation and concentration is 100~120℃.

[0009] Preferably, the pH is adjusted using 0.1M HCl and 0.1M NaOH.

[0010] Preferably, the temperature of the water bath evaporation and concentration is 100°C; the stirring speed is maintained at 200 r / min during the water bath evaporation and concentration. And / or, the temperature of the hot air evaporation and concentration is 120°C.

[0011] Furthermore, the hot spring water mentioned is Lushan hot spring water.

[0012] Furthermore, the Lushan hot spring water is hot spring water extracted from well No. 3 or well No. 7 of Jiangxi Lushan Xingzi Lushan Hot Spring Water Co., Ltd.; the drilling depth of well No. 3 is 206 m, and the drilling depth of well No. 7 is 524 m.

[0013] Preferably, the Lushan hot spring water is the hot spring water (JK7) extracted from Well No. 7 of Jiangxi Lushan Xingzi Lushan Hot Spring Water Co., Ltd., and the evaporation and concentration method is hot air evaporation and concentration.

[0014] The present invention also provides a method for preparing the aforementioned lithium-type therapeutic water, which includes the following steps: (1) Take hot spring water and adjust the pH to 5-8; (2) Evaporate and concentrate the hot spring water after pH adjustment in step (1) to a concentration ratio of 10-50 times to obtain lithium-type therapeutic water.

[0015] Furthermore, In step (1), the pH is adjusted to 4-6; And / or, in step (2), the evaporation concentration method is water bath evaporation concentration or hot air evaporation concentration; And / or, in step (2), concentrate to a concentration factor of 50 times.

[0016] Preferably, in step (1), the pH is adjusted to 6.

[0017] Furthermore, In step (1), the pH is adjusted using HCl and NaOH; And / or, in step (2), the temperature of the water bath evaporation concentration is 90~100℃; the stirring speed is maintained at 100~300 r / min during the water bath evaporation concentration; And / or, in step (2), the temperature of the hot air evaporation and concentration is 100~120℃.

[0018] Preferably, the pH is adjusted using 0.1M HCl and 0.1M NaOH.

[0019] Preferably, the temperature of the water bath evaporation and concentration is 100°C; the stirring speed is maintained at 200 r / min during the water bath evaporation and concentration. And / or, the temperature of the hot air evaporation and concentration is 120°C.

[0020] Preferably, the hot spring water is Lushan hot spring water.

[0021] Furthermore, the hot spring water is hot spring water extracted from Well No. 3 or Well No. 7 of Jiangxi Lushan Xingzi Lushan Hot Spring Water Co., Ltd.; the drilling depth of Well No. 3 is 206 m, and the drilling depth of Well No. 7 is 524 m.

[0022] Preferably, the Lushan hot spring water is the hot spring water (JK7) extracted from Well No. 7 of Jiangxi Lushan Xingzi Lushan Hot Spring Water Co., Ltd., and the evaporation and concentration method is hot air evaporation and concentration.

[0023] The present invention also provides the use of the aforementioned lithium-type therapeutic water in the preparation of bath water.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides a lithium-type therapeutic water and its preparation method. The lithium-type therapeutic water of this invention uses hot spring water as raw material and is prepared using a specific method to obtain lithium-type therapeutic water that meets the standards for therapeutic hot mineral water. The lithium-type therapeutic water of this invention has high contents of therapeutic and beneficial components, showing great potential in therapeutic effects; at the same time, this lithium-type therapeutic water meets the Class IV standard of groundwater quality, indicating good safety as bathing water. This invention provides more ways to utilize hot springs, expanding the utilization pathways of hot spring resources and showing good application prospects.

[0025] Obviously, based on the above description of the present invention, and according to common technical knowledge and conventional methods in the field, various other modifications, substitutions or alterations can be made without departing from the basic technical concept of the present invention.

[0026] The following detailed embodiments further illustrate the above-described content of the present invention. However, this should not be construed as limiting the scope of the present invention to the following examples. All technologies implemented based on the above-described content of the present invention fall within the scope of the present invention. Attached Figure Description

[0027] Figure 1 Fingerprints of lithium-type therapeutic water obtained by evaporation and concentration of hot spring water with different initial pH values: (a) ZK3 hot spring water with pH 4; (b) ZK3 hot spring water with pH 5; (c) ZK3 hot spring water with pH 6; (d) ZK3 hot spring water with pH 8; (e) JK7 hot spring water with pH 4; (f) JK7 hot spring water with pH 5; (g) JK7 hot spring water with pH 6; (h) JK7 hot spring water with pH 8.

[0028] Figure 2 The following graphs show the changes in hydrochemical parameters of lithium-type therapeutic water obtained by evaporation and concentration of hot spring water with different initial pH values: (a) ZK3 and JK7 hot spring water with pH value of 4; (b) ZK3 and JK7 hot spring water with pH value of 5; (c) ZK3 and JK7 hot spring water with pH value of 6; (d) ZK3 and JK7 hot spring water with pH value of 8.

[0029] Figure 3 Fingerprints of lithium-type therapeutic water obtained by hot air evaporation and concentration of hot spring water with different initial pH values: (a) ZK3 hot spring water with pH value of 4; (b) ZK3 hot spring water with pH value of 5; (c) ZK3 hot spring water with pH value of 6; (d) ZK3 hot spring water with pH value of 8; (e) JK7 hot spring water with pH value of 4; (f) JK7 hot spring water with pH value of 5; (g) JK7 hot spring water with pH value of 6; (h) JK7 hot spring water with pH value of 8.

[0030] Figure 4 The following graphs show the changes in hydrochemical parameters of lithium-type therapeutic water obtained by hot air evaporation and concentration of hot spring water with different initial pH values: (a) ZK3 hot spring water and JK7 hot spring water with pH value of 4; (b) ZK3 hot spring water and JK7 hot spring water with pH value of 5; (c) ZK3 hot spring water and JK7 hot spring water with pH value of 6; (d) ZK3 hot spring water and JK7 hot spring water with pH value of 8. Detailed Implementation

[0031] Unless otherwise stated, the raw materials and equipment used in the specific embodiments of the present invention are all known products and were obtained by purchasing commercially available products.

[0032] The component fingerprint diagram of this invention is an image used to represent the content of each ion in the therapeutic water of this invention.

[0033] The hot spring water used in this invention is Lushan hot spring water, specifically from well No. 3 (ZK3) and well No. 7 (JK7) of Jiangxi Lushan Xingzi Lushan Hot Spring Water Co., Ltd. The drilling depths for ZK3 and JK7 are 206m and 524m, respectively. During sampling, the sampling container (bottle) is first immersed and rinsed three times with the target hot spring water, ensuring it is full and overflowing to remove air before sealing it with a waterproof membrane to prevent air contamination. Sample collection and storage are strictly carried out in accordance with the "Technical Guidelines for Water Quality Sampling" (HJ 494-2009) and the "Technical Regulations for the Preservation and Management of Water Quality Samples" (HJ 493-2009).

[0034] The specific analysis and testing methods involved in the implementation are as follows: H2SiO3 and Na in water sample + Ca 2+ K + Mg 2+ The components were determined using an Agilent 5100 inductively coupled plasma optical emission spectrometer; Fe and Mn were measured. 2+ Zn 2+ 、Sr 2+ Li + Common heavy metals and other components were determined using inductively coupled plasma mass spectrometry (ICP-MS): PerkinElmer NexION 300X; Br - F - SO4 2- Cl - Anions were determined using an ICS-1100 ion chromatograph; HCO3- - and CO3 2- The components were determined using a Hach multi-parameter digital titrator through a standard titration procedure; pH and Eh were measured using a FE28 Mettler pH meter during the indoor concentration experiment; temperature was measured using a MIK-TP101 probe-type digital thermometer (range -50~300℃); and TDS was measured using an EZ-011 TDS water quality tester.

[0035] Among them, the field water sample analysis results were verified using the cation-anion balance formula. The results showed that the maximum permissible absolute value of the field data was less than or equal to 5%, ensuring the reliability of the water quality analysis results. The ion balance (ib) calculation formula (1) is as follows: (1) Data processing: This invention mainly uses Excel 2016 for data preprocessing, and all the graphs in this invention are drawn using Origin 2022 software. Acidification before water chemical analysis will dilute the solution. To effectively determine the ion content, it is necessary to calculate the true result based on the test results. The calculation method is shown in formula (2): (2) Where: C—actual ion concentration, mg / L; C1—Instrument-measured ion concentration, mg / L; V1—The volume of water sampled, in mL; V2 — Sample volume after acidification, mL.

[0036] Example 1: Preparation of the lithium-type therapeutic water of the present invention Lithium-type therapeutic water was prepared using a water bath evaporation and concentration method, as follows: Take 500 mL of JK7 hot spring water into a beaker, place the beaker in a water bath, maintain the experimental environment temperature at 25±0.5℃, maintain the magnetic stirring speed at 200 r / min, and set the water bath temperature at 100±0.5℃; adjust the pH of the hot spring water to 4±0.1 using 0.1M HCl and 0.1M NaOH. After evaporation in the water bath, the hot spring water reaches a concentration factor of 50 times, thus obtaining lithium-type therapeutic water. At this point, the Li in the lithium-type therapeutic water... + The concentration was 4.38 mg / L, which meets the medical value concentration standard (>1.00 mg / L).

[0037] Example 2: Preparation of the lithium-type therapeutic water of the present invention Lithium-type therapeutic water was prepared using a hot air evaporation and concentration method, as follows: Take 500 mL of JK7 hot spring water into a beaker and place the beaker in an electrically heated constant-temperature drying oven. Set the temperature of the oven to 120±0.5 ℃. Adjust the pH of the hot spring water to 6±0.1 using 0.1M HCl and 0.1M NaOH. After hot air evaporation, the hot spring water reaches a concentration factor of 50 times, thus obtaining lithium-type therapeutic water. At this point, the Li in the lithium-type therapeutic water... + The concentration was 5.11 mg / L, which meets the medical value concentration standard (>1.00 mg / L) and the concentration of named mineral water (>5.00 mg / L).

[0038] The following specific experimental examples demonstrate the beneficial effects of the present invention.

[0039] Experiment Example 1: Screening of Conditions for Preparing Lithium-Type Therapeutic Water by Water Bath Evaporation and Concentration Take 500 mL of Lushan hot spring water (JK7 or ZK3) in a beaker and place it in a water bath. Maintain the experimental environment temperature at 25±0.5 ℃, the magnetic stirring speed at 200 r / min, and the water bath temperature at 100±0.5 ℃. Adjust the pH of the hot spring water to 4±0.1, 5±0.1, 6±0.1, and 8±0.1 with 0.1M HCl and 0.1M NaOH to investigate the effect of the initial pH of the hot spring water on the therapeutic components of the concentrated solution. After the Lushan hot spring water is magnetically stirred and heated to reach a specific concentration ratio (i.e., 2 times, 5 times, 10 times, 20 times, and 50 times), immediately measure the water's temperature (T), pH, redox potential (Eh), total dissolved solids (TDS), and other hydrochemical parameters. Take 10 mL of the solution to detect the therapeutic components and other anions and cations in the hot spring water.

[0040] (1) Analysis of the variation pattern of physiotherapy components Figure 1 Fingerprint images of lithium-type therapeutic water obtained by water bath evaporation and concentration of hot spring water with different initial pH values. Throughout the water bath evaporation and concentration experiment, the concentration of each therapeutic component showed an increasing trend with the increase of the concentration factor, but the concentration effect of each therapeutic component was affected to varying degrees by the initial pH value of the hot spring water and the concentration factor. Figure 1 (a) to (d) in the text represent the concentrated results of various therapeutic components using Lushan ZK3 hot spring as the water source. Figure 1 Li (a) in the middle + The concentration increased from a maximum of 0.40 mg / L to a maximum of 3.84 mg / L. Figure 1 Br (d) shown in the middle - The concentration increased from a maximum of 1.72 mg / L to a maximum of 5.72 mg / L. Figure 1 Sr is shown in (a) 2+ The concentration increased from a maximum of 0.03 mg / L to a maximum of 0.64 mg / L. Figure 1 As shown in (d), the H2SiO3 concentration increased from a maximum of 73.11 mg / L to 1673.71 mg / L. Figure 1 F is shown in (d) - The concentration increased from a maximum of 6.09 mg / L to 247.84 mg / L.

[0041] Figure 1 (e) to (h) in the text represent the concentrated results of various therapeutic components sourced from the JK7 hot spring in Lushan. Figure 1 Li (e) in + The concentration increased from a maximum of 0.16 mg / L to a maximum of 4.38 mg / L. Figure 1 Br (h) shown in the middle - The concentration increased from a maximum of 1.97 mg / L to a maximum of 5.72 mg / L. Figure 1Sr (g) in 2+ The concentration was increased from a maximum of 0.01 mg / L to a maximum of 0.55 mg / L. Figure 1 As shown in (e), the H2SiO3 concentration increased from a maximum of 73.32 mg / L to 1514.93 mg / L. Figure 1 F is shown in (h) - The concentration increased from a maximum of 8.68 mg / L to 295.75 mg / L.

[0042] It can be seen that the therapeutic component Br obtained from the concentration experiment using Lushan ZK3 hot spring and JK7 hot spring as water sources - The therapeutic component Sr obtained from the concentration experiment using Lushan ZK3 hot spring as the water source at the same concentration 2+ The highest concentration of H2SiO3 was relatively high. The therapeutic component Li obtained from the concentration experiment using Lushan JK7 hot spring as the water source was... + F - The highest concentration is relatively high. In order to obtain lithium-type therapeutic water, JK7 hot spring was selected as the water source.

[0043] H2SiO3 and F in solutions obtained after water was concentrated 2, 5, and 10 times under different initial pH conditions - The concentration changes were basically consistent; the concentrations of H2SiO3 and F in the solutions obtained after concentrating the water 20 times and 50 times were similar. - With similar concentrations, it can be concluded that when the H2SiO3 concentration is higher than 1000.00 mg / L, F - When the concentration is higher than 200.00 mg / L, the concentration of H2SiO3 and F in the water body is high. - Concentration changes tend to stabilize, and the magnitude of change decreases. Li + ,Br - 、Sr 2+ The concentration change does not increase steadily with increasing concentration factor. For example, the concentration of Li in the solution obtained after concentrating water by 2 times is different. + The concentration of Li in the original hot spring water is lower than that in the original hot spring water. + concentration (see) Figure 1 (a), (b), and (d) in the text) show the Br content in the solutions obtained after the water body is concentrated twice. - The concentration of Br in the original hot spring water is lower than that in the original hot spring water. - concentration (see) Figure 1 The Sr values ​​in solutions obtained after water concentration of (a), (b), (c), (e), (f), (g), and (h) are 2, 5, 10, 20, and 50 times, respectively. 2+ Concentration and Sr in the original hot spring water 2+ Similar concentrations (see) Figure 1 (d) and (h) in the text. Overall, the water bath evaporation method can... +,Br - H2SiO3, F - It achieves a concentration effect, but cannot achieve the desired effect on Sr. 2+ Concentration, even after water is concentrated 50 times, Sr 2+ The concentration is still below 1.00 mg / L.

[0044] Li in the hot spring water of Lushan ZK3 and JK7 + The concentrations reached the medical value concentration standard (>1.00 mg / L) after being concentrated 10 times or more under different initial pH conditions. This was achieved when the water source was JK7 hot spring water, the initial pH was 4, and the concentration factor was 50 times (see...). Figure 1 When (e) is in the middle, it reaches its maximum value, at which point Li + The concentration was 4.38 mg / L, which is close to the concentration of the named mineral water (>5.00 mg / L).

[0045] (2) Analysis of changes in water chemical parameters Figure 2 A graph showing the changes in hydrochemical parameters of lithium-type therapeutic water obtained by evaporation and concentration of hot spring water at different initial pH values. Figure 2 In (a), as the concentration factor increases, the pH value of ZK3 ranges from 4.28 to 4.88, the TDS value ranges from 1632.00 to 9406.50 mg / L, the Eh value ranges from 176.10 to 222.60, and the T value ranges from 69.45 to 90.40 ℃; the pH value of JK7 ranges from 4.21 to 4.58, the TDS value ranges from 1394.00 to 8734.00 mg / L, the Eh value ranges from 213.00 to 234.00, and the T value ranges from 67.15 to 87.05 ℃.

[0046] exist Figure 2 In (b), as the concentration factor increases, the pH value of ZK3 ranges from 7.63 to 8.59, the TDS value ranges from 1402.00 to 8500.00 mg / L, the Eh value ranges from 161.50 to 209.00, and the T value ranges from 66.10 to 92.00 ℃; the pH value of JK7 ranges from 7.42 to 8.50, the TDS value ranges from 1449.50 to 9076.00 mg / L, the Eh value ranges from 182.00 to 204.50, and the T value ranges from 71.30 to 91.30 ℃.

[0047] exist Figure 2In (c), as the concentration multiple increases, the pH value of ZK3 varies from 8.45 to 9.68, the TDS value varies from 1224.00 to 8847.00 mg / L, the Eh value varies from 160.90 to 218.70, and the T value varies from 72.45 to 92.05 °C; the pH value of JK7 varies from 8.38 to 9.71, the TDS value varies from 1336.00 to 8798.50 mg / L, the Eh value varies from 129.50 to 157.00, and the T value varies from 66.20 to 91.50 °C.

[0048] In Figure 2 In (d), as the concentration multiple increases, the pH value of ZK3 varies from 9.07 to 9.89, the TDS value varies from 1248.50 to 8774.00 mg / L, the Eh value varies from 153.90 to 206.40, and the T value varies from 70.80 to 89.40 °C; the pH value of JK7 varies from 8.91 to 9.77, the TDS value varies from 1147.00 to 8532.50 mg / L, the Eh value varies from 128.00 to 143.50, and the T value varies from 89.30 to 71.95 °C.

[0049] It can be seen that Figure 2 during the entire water bath concentration experiment process, the TDS value of the obtained concentrated samples shows an upward trend as the concentration multiple increases, and all meet the water quality standard for physiotherapy hot spring water sources (TDS > 1000 mg / L). The pH value of the obtained concentrated samples also increases as the concentration multiple increases. It is speculated that this is because during the concentration process, the concentration of inorganic salts, minerals, etc. dissolved in water increases, and some acidic substances (such as sulfates, chlorides, etc.) may volatilize or decompose, resulting in a decrease in the acidic components in the water and an increase in the pH value. However, when the initial pH value of the hot spring water is 4, the pH value of the obtained concentrated samples does not meet the water quality standard for physiotherapy hot spring water sources (5.8 < pH < 10.0), belonging to acidic hot spring water sources and cannot be used as water for providing hot spring services (see Figure 2 in (a)); when the initial pH values of the hot spring water are 5, 6, and 8, the pH values of the obtained concentrated samples all meet the water quality standard for physiotherapy hot spring water sources (5.8 < pH < 10.0) and can be used as water for providing hot spring services (see Figure 2 in (b), (c) and (d)).

[0050] The actual lowest temperature of the concentrated hot spring water sample obtained after evaporation and concentration is 66.10 °C (see Figure 2 in (b)), and the actual highest temperature is 92.05 °C (see Figure 2(c) indicates that the T values ​​of all concentrated samples were lower than the T value (100 ℃) set for the concentration experiment conditions. This is presumably because the concentration quality of the water bath evaporation method is unstable and easily affects heat-sensitive components such as volatile substances and easily oxidized components during the heating process. Under the condition that the initial pH of the hot spring water was 4 and 6, the Eh values ​​of the concentrated samples obtained using Lushan ZK3 hot spring water as the water source showed a trend of first decreasing and then increasing with the increase of the concentration factor (see [reference]). Figure 2 In (a) and (c) of the study, the Eh value of the hot spring water with an initial pH of 5 showed a trend of first increasing and then decreasing with the increase of the concentration factor (see [reference]). Figure 2 In (b) of the text, the Eh value fluctuated significantly under the condition that the initial pH of the hot spring water was 8 (see [reference]). Figure 2 The Eh values ​​of the concentrated samples obtained using Lushan JK7 hot spring water as the source showed a consistent trend and were relatively stable, indicating that different hot spring water sources, initial pH values ​​of hot spring water, and concentration factors not only affected the solute concentration but also had a significant impact on the redox state and temperature distribution of the solution.

[0051] In summary, when preparing lithium-type therapeutic water using the water bath evaporation and concentration method, the optimal lithium-type therapeutic water is obtained by using Lushan JK7 hot spring water as the water source, with an initial pH of 4 and a concentration factor of 50 times. This lithium-type therapeutic water exhibits the best Li-content. + The highest concentration (4.38 mg / L) was achieved, meeting the medical value concentration standard (>1.00 mg / L) and approaching the concentration of named mineral water (>5.00 mg / L). Furthermore, the prepared lithium-type therapeutic water exhibited good stability.

[0052] Experimental Example 2: Screening of Conditions for Preparing Lithium-Based Therapeutic Water by Hot Air Evaporation and Concentration Take 500 mL of Lushan hot spring water (JK7 or ZK3) in a beaker and place the beaker in an electric thermostatic drying oven at 120±0.5 ℃. Adjust the pH of the hot spring water to 4±0.1, 5±0.1, 6±0.1, and 8±0.1 with 0.1M HCl and 0.1M NaOH to investigate the effect of the initial pH of the hot spring water on the therapeutic components of the concentrated solution. When the Lushan hot spring water reaches a specific concentration ratio (2, 5, 10, 20, and 50 times) through air drying and evaporation, immediately measure the water chemical parameters such as T, pH, Eh, and TDS. Take 10 mL of the solution to detect the therapeutic components and other anions and cations in the hot spring water.

[0053] (1) Analysis of the variation pattern of physiotherapy components Figure 3Fingerprint images of lithium-type therapeutic water obtained by hot air evaporation and concentration of hot spring water at different initial pH values. Throughout the hot air evaporation and concentration experiment, the concentrations of each therapeutic component showed an increasing trend, but the concentration effect of each component was affected to varying degrees by the initial pH value of the hot spring water and the concentration factor. Figure 3 (a), (b), (c), and (d) in the figures represent the concentrated results of various therapeutic components using Lushan ZK3 hot spring as the water source. Figure 3 (a) Li + The concentration increased from a maximum of 0.40 mg / L to a maximum of 3.07 mg / L. Figure 3 Br (d) shown in the middle - The concentration increased from a maximum of 1.72 mg / L to a maximum of 5.14 mg / L. Figure 3 Sr is shown in (a) 2+ The concentration increased from a maximum of 0.03 mg / L to a maximum of 0.58 mg / L. Figure 3 As shown in (d), the H2SiO3 concentration increased from a maximum of 73.11 mg / L to 1245.50 mg / L. Figure 3 F shown in (c) - The concentration increased from a maximum of 6.09 mg / L to 228.37 mg / L.

[0054] Figure 3 (e), (f), (g), and (h) in the figure represent the concentrated results of various therapeutic components sourced from the JK7 hot spring in Lushan. Figure 3 Li (g) shown in the middle + The concentration increased from a maximum of 0.16 mg / L to a maximum of 5.11 mg / L. Figure 3 Br (h) shown in the middle - The concentration increased from a maximum of 1.97 mg / L to a maximum of 4.42 mg / L. Figure 3 Sr (g) in 2+ The concentration increased from a maximum of 0.01 mg / L to a maximum of 0.57 mg / L. Figure 3 As shown in (e), the H2SiO3 concentration increased from a maximum of 73.32 mg / L to 1217.40 mg / L. Figure 3 F is shown in (f) - The concentration increased from a maximum of 8.68 mg / L to 242.65 mg / L.

[0055] It can be seen that the therapeutic component Br obtained from the concentration experiment using Lushan ZK3 hot spring as the water source - 、Sr 2+ The highest concentration of H2SiO3 was relatively high. The therapeutic component Li obtained from the concentration experiment using Lushan JK7 hot spring as the water source was... + F - The highest concentration is relatively high. In order to obtain lithium-type therapeutic water, JK7 hot spring was selected as the water source.

[0056] Under the condition that the initial pH value of the hot spring water is 5 or 6, and the water source is Lushan ZK3 hot spring water (see...) Figure 3 In (b) and (c) of the above, the concentrations of H2SiO3 in the solutions obtained after concentrating the water by 10, 20, and 50 times are similar, indicating that further increasing the concentration factor will not enrich H2SiO3; under the condition that the initial pH of the hot spring water is 4 and the water source is Lushan JK7 hot spring water (see Figure 3 (e) In the solution obtained after water is concentrated 20 times and 50 times, F - The concentrations were similar, at 122.49 mg / L and 135.50 mg / L respectively. It is speculated that further increasing the concentration factor F... - The concentration of H2SiO3 and F will not increase further, while the concentrations of H2SiO3 and F under other concentration conditions will also decrease. - The concentration showed a steady upward trend as the concentration factor increased.

[0057] Li + The concentration change increases steadily with increasing concentration factor (see...). Figure 3 ), while Br - The concentration change does not always increase steadily with the increase of the concentration factor. For example, under the condition that the initial pH of the hot spring water is 5 and the Lushan ZK3 hot spring water is used as the water source (see...). Figure 3 (b) In the solution obtained after the water body is concentrated 20 times, the Br content is... - The concentration of 3.67 mg / L is the maximum value under these conditions, indicating that Br under these conditions... - The concentration fluctuates. Overall, hot air evaporation can reduce Li... + ,Br - H2SiO3, F - It achieves a concentration effect, but cannot achieve the desired effect on Sr. 2+ Concentration, even after water is concentrated 50 times, Sr 2+ The concentration is still below 1.00 mg / L.

[0058] Li in the hot spring water of Lushan ZK3 and JK7 + The concentrations of Li in JK7 hot spring water, after being concentrated 10 times or more under different initial pH conditions, all reached the medical value concentration standard (>1.00 mg / L). + The concentration was at an initial pH of 6 and a concentration factor of 50 times (see...). Figure 3 When (g) is in the middle, it reaches its maximum value, at which point Li + The concentration is 5.11 mg / L, which meets the naming concentration requirement (>5.00 mg / L), and can be named lithium water. The Li obtained under these conditions... +The concentration results were better than those obtained by the water bath evaporation method. Therefore, the optimal conditions were used to prepare the lithium-type therapeutic water in the future.

[0059] (2) Analysis of changes in water chemical parameters Figure 4 A graph showing the changes in hydrochemical parameters of lithium-type therapeutic water obtained by hot air evaporation and concentration of hot spring water with different initial pH values. Figure 4 In (a) of the above, as the concentration factor increases, the pH value of ZK3 varies from 4.02 to 4.42, the TDS value varies from 767.00 to 8562.00 mg / L, the Eh value varies from 215.00 to 265.00, and the T value varies from 51.00 to 58.00 ℃; the pH value of JK7 varies from 4.09 to 4.24, the TDS value varies from 572.00 to 9589.00 mg / L, the Eh value varies from 256.00 to 307.00, and the T value varies from 57.00 to 63.00 ℃.

[0060] exist Figure 4 In (b), as the concentration factor increases, the pH value of ZK3 ranges from 7.69 to 8.13, the TDS value ranges from 660.00 to 9650.00 mg / L, the Eh value ranges from 121.00 to 192.00, and the T value ranges from 51.00 to 63.00 ℃; the pH value of JK7 ranges from 7.58 to 8.06, the TDS value ranges from 651.00 to 8628.00 mg / L, the Eh value ranges from 118.00 to 167.00, and the T value ranges from 49.00 to 62.00 ℃.

[0061] exist Figure 4 In (c), as the concentration factor increases, the pH value of ZK3 ranges from 8.45 to 9.68, the TDS value ranges from 1224.00 to 8847.00 mg / L, the Eh value ranges from 160.90 to 218.70, and the T value ranges from 52.45 to 72.05 ℃; the pH value of JK7 ranges from 8.70 to 9.18, the TDS value ranges from 567.00 to 9624.00 mg / L, the Eh value ranges from 96.00 to 115.00, and the T value ranges from 53.00 to 61.00 ℃.

[0062] exist Figure 4In (d), as the concentration multiple increases, the pH value of ZK3 ranges from 9.13 to 9.58, the TDS value ranges from 513.00 to 6409.00 mg / L, the Eh value ranges from 91.00 to 114.00, and the T value ranges from 54.00 to 64.00 °C; the pH value of JK7 ranges from 9.16 to 9.68, the TDS value ranges from 513.00 to 6637.00 mg / L, the Eh value ranges from 97.00 to 112.00, and the T value ranges from 47.00 to 62.00 °C.

[0063] It can be seen from Figure 4 that during the entire hot air concentration experiment, the TDS value of the concentrated samples obtained shows an upward trend as the concentration multiple increases. When the concentration multiple is 2 times or more, it meets the water quality standard for physiotherapy hot spring water sources (TDS > 1000 mg / L). The pH value of the concentrated samples obtained also basically shows an upward trend as the concentration multiple increases, and is lower than the pH value of the concentrated samples obtained by the water bath evaporation method under the same initial pH value and water source conditions of the hot spring water. It is speculated that due to the relatively high heating temperature of the hot air evaporation method, it may accelerate the evaporation or degradation of acidic components, resulting in a lower pH value than that of the samples obtained by the water bath evaporation method. When the initial pH value of the hot spring water is 4, the pH value of the concentrated samples obtained does not meet the water quality standard for physiotherapy hot spring water sources (5.8 < pH < 10.0), belonging to acidic hot spring water sources and cannot be used as water for providing hot spring services (see Figure 4 in (a)); when the initial pH values of the hot spring water are 5, 6, and 8, the pH values of the concentrated samples obtained all meet the water quality standard for physiotherapy hot spring water sources (5.8 < pH < 10.0) and can be used as water for providing hot spring services (see Figure 4 in (b), (c) and (d)).

[0064] The actual lowest temperature of the concentrated hot spring water samples obtained by hot air evaporation concentration is 47.00 °C (see Figure 4 in (d)), and the actual highest temperature is 72.05 °C (see Figure 4 in (c)), indicating that the T values of all concentrated samples are lower than the set T value (120 °C) in the concentration experiment conditions. It is speculated that because the hot air evaporation method mainly relies on air flow to carry away moisture, problems such as a relatively low hot air flow rate, insufficient heat transfer efficiency, or inaccurate temperature control are likely to occur during the heating process. When the initial pH values of the hot spring water are 5 and 8, the Eh values of the concentrated samples obtained show little fluctuation and are in a stable state (see Figure 4 in (b) and (d)), indicating that the redox reaction during the concentration process is relatively slow, and the concentration and reaction rate of redox substances in the water are relatively low. In addition, from Figure 4 and Figure 2The comparison results show that the change of Eh is more stable during the hot air evaporation and concentration process than that of the water bath evaporation method. This is presumably because the hot spring water does not experience rapid thermal shock during the concentration process, and the oxidation-reduction reaction is relatively stable.

[0065] In summary, when preparing lithium-type therapeutic water using hot air evaporation and concentration, the optimal method yields the best results using Lushan JK7 hot spring water as the source, with an initial pH of 6 and a concentration factor of 50 times. This lithium-type therapeutic water exhibits the highest Li-content. + The highest concentration (5.11 mg / L) was achieved, meeting the medical value concentration standard (>1.00 mg / L) and the named mineral water concentration (>5.00 mg / L). Furthermore, the prepared lithium-type therapeutic water exhibited good stability.

[0066] Experimental Example 3: Study on the characteristics of lithium-type therapeutic water Based on the results of Experiment 1 and Experiment 2, it can be concluded that: using Lushan JK7 hot spring water as the water source, adjusting the initial pH value of the hot spring water to 6, and concentrating it 50 times using hot air evaporation, the resulting Li + The concentration reached its maximum value (5.11 mg / L) and met the medical value concentration standard. The sample obtained under these concentration conditions can be used as lithium-type therapeutic water. The lithium-type therapeutic water prepared under these concentration conditions was analyzed as follows.

[0067] 1. Component characteristics of lithium-based therapeutic water Based on the comprehensive evaporation and concentration experiments, and referring to the national standards "Requirements for Hot Spring Water Quality in Hot Spring Services" (GB / T 41837-2022) and "Specifications for Geological Exploration of Geothermal Resources" (GB / T 11615-2010), we can preliminarily determine the lithium-type therapeutic water. Its concentration conditions, therapeutic component content, beneficial component content, and water quality evaluation are shown in Table 1. According to Table 1, the lithium-type therapeutic water is a high-mineral geothermal brine with high levels of both therapeutic and beneficial components, and it meets the standards for hot spring source water quality. This indicates that it has significant potential for therapeutic effects and also provides good assurance in terms of safety and compliance. Therefore, we can preliminarily infer that lithium-type therapeutic water can be used in hot spring therapy and is expected to provide users with highly effective health benefits.

[0068] Table 1. Component characteristics of the lithium-type therapeutic water of the present invention 2. Characteristics of heavy metal concentration changes Heavy metal variation analysis plays an indispensable role in the quality control of therapeutic water. Comprehensive analysis of heavy metal concentrations and their changing trends can effectively ensure water safety, prevent adverse health reactions, and provide a solid scientific foundation for the research, standardization, and widespread application of new therapeutic water technologies.

[0069] The analysis revealed that the main heavy metals in the lithium-type therapeutic water were As, Cd, Cr, Cu, Mn, Ni, Pb, Se, and Zn, with concentrations of 0.02 mg / L, 0.04 mg / L, 0.06 mg / L, 0.19 mg / L, 0.19 mg / L, 0.01 mg / L, 0.01 mg / L, 0.01 mg / L, and 0.06 mg / L, respectively. The heavy metal concentrations in the lithium-type therapeutic water all met the Class IV standard of groundwater quality. Therefore, the lithium-type therapeutic water prepared by this invention meets the standard for therapeutic hot mineral water and can be used for bathing. Solid-state EDS energy dispersive spectroscopy showed that the main elements in the precipitated solids of the lithium-type therapeutic water of this invention were O (46.16%), Na (20.07%), and Si (28.88%).

[0070] In summary, this invention provides a lithium-type therapeutic water and its preparation method. The lithium-type therapeutic water of this invention uses hot spring water as raw material and is prepared using a specific method to obtain lithium-type therapeutic water that meets the standards for therapeutic hot mineral water. The lithium-type therapeutic water of this invention has high contents of therapeutic and beneficial components, showing great potential in therapeutic effects; at the same time, this lithium-type therapeutic water meets the Class IV standard of groundwater quality, indicating good safety as bathing water. This invention provides more ways to utilize hot springs, expanding the utilization pathways of hot spring resources and showing good application prospects.

[0071] The above-disclosed embodiments are merely specific examples of the present invention. However, the present invention is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A lithium-based therapeutic water, characterized in that: The preparation method of the lithium-type therapeutic water includes the following steps: (1) Take lithium-containing hot spring water and adjust the pH to 5-8; (2) Evaporate and concentrate the hot spring water after pH adjustment in step (1) to a concentration ratio of 10-50 times to obtain lithium-type therapeutic water.

2. The lithium-type therapeutic water according to claim 1, characterized in that: In step (1), the pH is adjusted to 4-6; And / or, in step (2), the evaporation concentration method is water bath evaporation concentration or hot air evaporation concentration; And / or, in step (2), the concentration is increased to a concentration factor of 50 times.

3. The lithium-type therapeutic water according to claim 2, characterized in that: In step (1), the pH is adjusted using HCl and NaOH; And / or, in step (2), the temperature of the water bath evaporation concentration is 90~100℃; the stirring speed is maintained at 100~300 r / min during the water bath evaporation concentration; And / or, in step (2), the temperature of the hot air evaporation and concentration is 100~120℃.

4. The lithium-type therapeutic water according to any one of claims 1 to 3, characterized in that: The hot spring water mentioned is from Lushan Hot Spring.

5. The lithium-type therapeutic water according to claim 4, characterized in that: The Lushan hot spring water is hot spring water extracted from well No. 3 or well No. 7 of Jiangxi Lushan Xingzi Lushan Hot Spring Water Co., Ltd.; the drilling depth of well No. 3 is 206m, and the drilling depth of well No. 7 is 524m.

6. The method for preparing lithium-type therapeutic water according to any one of claims 1 to 5, characterized in that: It includes the following steps: (1) Take hot spring water and adjust the pH to 5-8; (2) Evaporate and concentrate the hot spring water after pH adjustment in step (1) to a concentration ratio of 10-50 times to obtain lithium-type therapeutic water.

7. The preparation method according to claim 6, characterized in that: In step (1), the pH is adjusted to 4-6; And / or, in step (2), the evaporation concentration method is water bath evaporation concentration or hot air evaporation concentration; And / or, in step (2), concentrate to a concentration factor of 50 times.

8. The preparation method according to claim 7, characterized in that: In step (1), the pH is adjusted using HCl and NaOH; And / or, in step (2), the temperature of the water bath evaporation concentration is 90~100℃; the stirring speed is maintained at 100~300 r / min during the water bath evaporation concentration; And / or, in step (2), the temperature of the hot air evaporation and concentration is 100~120℃.

9. The preparation method according to any one of claims 6 to 8, characterized in that: The hot spring water is either extracted from Well No. 3 or Well No. 7 of Jiangxi Lushan Xingzi Lushan Hot Spring Water Co., Ltd.; the drilling depth of Well No. 3 is 206m, and the drilling depth of Well No. 7 is 524m.

10. Use of the lithium-type therapeutic water according to any one of claims 1 to 5 in the preparation of bath water.

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