Bromide treatment device in production of mineral water

Abstract

This utility model discloses a bromide treatment device for mineral water production, relating to the field of mineral water treatment technology. The device includes a storage tank with its inlet connected to a natural water source. The outlet of the storage tank is sequentially connected to a sand filter, an activated carbon filter, a precision filter, an ultrafiltration unit, a reverse osmosis unit, an ultraviolet sterilization unit, and an ozone sterilization unit. The ultrafiltration unit has two outlets: one connected to the inlet of the reverse osmosis unit, and the other connected to an ion exchange system. The outlet of the ion exchange system is connected to the inlet of the ultraviolet sterilization unit. This utility model removes bromide from the mineral water by setting up an ion exchange system before the ozone sterilization stage, reducing the bromide content. This ensures that the bromate content produced after entering the ozone sterilization stage is below the national standard, while preventing the loss of other beneficial minerals in the mineral water.

Description

Technical Field

[0001] This utility model relates to the field of mineral water treatment technology, specifically to a bromide treatment device in mineral water production. Background Technology

[0002] Bromate is widely present in nature, especially in groundwater and mineral water, and its potential health risks should not be ignored. Long-term consumption of drinking water containing bromate may affect the proliferation and differentiation function of human tissue cells, increasing the risk of cancer.

[0003] For bromate to appear in water, firstly, bromine must be present in the water, and secondly, certain conditions must be met for its formation. Generally, pure water does not contain bromide, and therefore does not present a bromate problem. In natural mineral water, only a very small number of regions in my country contain bromide. Additionally, the use of high-concentration ozone treatment devices in mineral water production to kill bacteria related to bromide production is another factor; the combination of these two factors is necessary for the formation of high concentrations of bromate.

[0004] Therefore, bromate exceeding the standard is a common problem in mineral water production processes, especially in ozone sterilization. Studies have shown that Br- concentration plays a controlling role in the formation of Br03- during ozone oxidation. There is a critical concentration of Br-; below this concentration, even with increased ozone dosage, no Br03- will be formed after oxidation. This critical concentration varies with water quality and oxidation conditions. In actual water bodies, when the Br- concentration exceeds the critical concentration, the Br03- concentration continues to increase with the increase of Br- concentration.

[0005] Existing ozone-free sterilization and disinfection methods avoid the problem of excessive nitrates, but they have drawbacks such as incomplete sterilization and disinfection, easy spoilage of mineral water, and short shelf life. Utility Model Content

[0006] Therefore, this utility model provides a bromide treatment device for mineral water production to solve the problems existing in the above-mentioned technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A bromide treatment device for mineral water production includes a water storage tank, the inlet of which is connected to a natural water source, and the outlet of which is sequentially connected to a sand filter, an activated carbon filter, a precision filter, an ultrafiltration device, a reverse osmosis device, an ultraviolet sterilization device, and an ozone sterilization device.

[0009] The ultrafiltration device has two outlets, one of which is connected to the inlet of the reverse osmosis device, and the other is connected to an ion exchange system. The outlet of the ion exchange system is connected to the inlet of the ultraviolet sterilization device.

[0010] Optionally, the ion exchange system includes a resin tank, in which resin is disposed in the middle, and the inlet of the resin tank is connected to the outlet of the ultrafiltration device, and the inlet of the resin tank is higher than the height of the resin.

[0011] A main water inlet pipe is located below the resin inside the resin tank. The main water inlet pipe is connected to a backwash water inlet pipe and a regeneration water inlet pipe. A main water outlet pipe is located above the resin inside the resin tank. The main water outlet pipe is connected to a backwash water outlet pipe and a regeneration water outlet pipe. A raw water outlet pipe is also located below the resin inside the resin tank.

[0012] Optionally, the resin tank is provided with an vent valve at the bottom and a breather valve at the top.

[0013] Optionally, a flow meter is installed on the pipeline between the resin tank inlet and the ultrafiltration equipment outlet.

[0014] Optionally, the resin tank is made of 304 stainless steel.

[0015] This utility model has at least the following beneficial effects:

[0016] This invention removes bromide from mineral water by setting up an ion exchange system before the ozone sterilization process, thus reducing the bromide content. This ensures that the bromate content produced after entering the ozone sterilization process is lower than the national standard, while also preventing the loss of other beneficial minerals in the mineral water. Attached Figure Description

[0017] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the ion exchange system structure according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Water storage tank; 2. Sand filter; 3. Activated carbon filter; 4. Precision filter; 5. Ultrafiltration equipment; 6. Reverse osmosis equipment; 7. Ultraviolet sterilization equipment; 8. Ozone sterilization equipment; 9. Ion exchange system; 91. Resin tank; 92. Resin; 93. Main inlet pipe; 94. Backwash inlet pipe; 95. Regeneration inlet pipe; 96. Main outlet pipe; 97. Backwash outlet pipe; 98. Regeneration outlet pipe; 99. Raw water outlet pipe; 10. Drain valve; 11. Breathing valve; 12. Flow meter. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0024] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For schemes with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for schemes with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0025] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0026] like Figure 1 and Figure 2As shown, this utility model discloses a bromide treatment device 9 for mineral water production, which includes a water storage tank 1. The inlet of the water storage tank 1 is connected to a natural water source, and the outlet of the water storage tank 1 is sequentially connected to a sand filter 2, an activated carbon filter 3, a precision filter 4, an ultrafiltration device 5, a reverse osmosis device 6, an ultraviolet sterilization device 7, and an ozone sterilization device 8.

[0027] The ultrafiltration device 5 has two outlets, one of which is connected to the inlet of the reverse osmosis device 6, and the other is connected to the ion exchange system 9. The outlet of the ion exchange system 9 is connected to the inlet of the ultraviolet sterilization device 7.

[0028] The aforementioned water storage tank 1 is connected to the natural water source. The natural water from the water source is pumped to the water storage tank 1 by a raw water pump. The raw water in the water storage tank 1 is then pumped to the sand filter 2 by a booster pump, and then into the softening system through the carbon filter. After passing through the precision filter 4, it is pumped to the ultrafiltration equipment 5 and the reverse osmosis equipment 6 by a booster pump. Finally, after passing through the ultraviolet sterilization equipment 7 and the ozone sterilization equipment 8, the water that meets the standards enters the downstream filling, labeling, and packaging system to produce finished water for sale.

[0029] The sand filter 2 described above uses quartz sand as the filter medium. Under certain pressure, water with high turbidity is filtered through a certain thickness of granular or non-granular quartz sand. It effectively intercepts and removes suspended solids, organic matter, colloidal particles, microorganisms, chlorine, odors and some heavy metal ions in the water, and finally achieves the effect of reducing water turbidity and purifying water quality.

[0030] The activated carbon filter 3 mentioned above is a commonly used water treatment device. As a pretreatment in a water treatment desalination system, it can adsorb residual chlorine that cannot be removed by the previous stage of filtration, effectively ensuring the service life of downstream equipment, improving the quality of effluent, and preventing pollution, especially preventing poisoning from free residual chlorine in downstream reverse osmosis membranes and ion exchange resins. It also adsorbs small-molecule organic pollutants leaked from the previous stage, and has a significant adsorption and removal effect on odors, colloids, pigments, and heavy metal ions in the water. Furthermore, it reduces COD.

[0031] The aforementioned precision filter 4 (also known as a security filter) typically uses a stainless steel outer shell and internal tubular filter elements such as PP melt-blown, wire-spun, pleated, titanium, and activated carbon filters. Different filter elements are selected based on the specific filtration medium and design process to meet the required effluent quality. It is used for solid-liquid separation of various suspensions, filtration of pharmaceutical solutions with high environmental requirements and high filtration precision, and has a wide range of applications in pharmaceutical, food, chemical, environmental protection, and water treatment industries.

[0032] The ultrafiltration device 5 described above is a membrane separation device capable of purifying and separating solutions. An ultrafiltration membrane system is a solution separation device that uses ultrafiltration membrane fibers as the filter medium and the pressure difference across the membrane as the driving force. The ultrafiltration membrane only allows solvents (such as water molecules), inorganic salts, and small organic molecules in the solution to pass through, while retaining large molecules such as suspended solids, colloids, proteins, and microorganisms, thereby achieving purification or separation. It can effectively reduce the bromide content in water.

[0033] The aforementioned reverse osmosis equipment 6 utilizes the function of selectively permeable (semi-permeable) membranes and pressure-driven membrane separation technology. When the pressure applied in the system is greater than the osmotic pressure of the feed water, water molecules continuously permeate through the membrane, flow into the central tube through the product water channel, and then flow out at one end. Impurities in the water, such as ions, organic matter, bacteria, and viruses, are trapped on the feed water side of the membrane and then flow out at the concentrate outlet, thereby achieving the purpose of separation and purification, and can further reduce the bromide content in the water.

[0034] The aforementioned ultraviolet sterilization equipment 7 utilizes high-intensity ultraviolet germicidal lamps to destroy the internal structures of bacteria and viruses, such as their DNA, thereby achieving the disinfection of pathogenic microorganisms in water. It is suitable for microbial populations such as bacteria, viruses, and fungi that are sensitive to the destructive power of ultraviolet technology.

[0035] Ultraviolet disinfection equipment suitable for effluent from urban sewage treatment plants, reclaimed urban sewage, and effluent from industrial wastewater treatment plants;

[0036] The ozone sterilization equipment 8 mentioned above is a water treatment technology that uses ozone as a disinfectant. Ozone is a strong oxidant. After dissolving in water, it directly or indirectly oxidizes inorganic and organic matter in the water by utilizing a large number of hydroxyl radicals and nascent oxygen generated in the reaction. It also enters the cells of bacteria to oxidize intracellular organic matter, thereby achieving the purpose of sterilization, disinfection, and water purification. Compared with chlorination disinfection, ozone disinfectant is smaller, acts faster, and has a better disinfection effect. At the same time, it can improve the taste and appearance of water and allow the water to be preserved for a long time without deterioration.

[0037] It should be noted that the sand filter 2, activated carbon filter 3, precision filter 4, ultrafiltration equipment 5, reverse osmosis equipment 6, ultraviolet sterilization equipment 7, and ozone sterilization equipment 8 mentioned above can all be commercially available equipment. Their specific structures and pipeline connections are existing technologies and will not be described in detail here.

[0038] The aforementioned ion exchange system 9 is located between the ultrafiltration device 5 and the reverse osmosis device 6, and is connected in parallel with the reverse osmosis device 6 for users to choose from. Since the reverse osmosis device 6 is more expensive, users can choose to use the ion exchange system 9 or the reverse osmosis device 6 according to their needs.

[0039] In one specific embodiment, the ion exchange system 9 includes a resin tank 91, with resin 92 disposed in the middle of the resin tank 91. The inlet of the resin tank 91 is connected to the outlet of the ultrafiltration device 5, and the inlet of the resin tank 91 is higher than the height of the resin 92.

[0040] A main water inlet pipe 93 is provided inside the resin tank 91 below the resin membrane 92. The main water inlet pipe 93 is connected to a backwash water inlet pipe 94 and a regeneration water inlet pipe 95. A main water outlet pipe 96 is provided inside the resin tank 91 above the resin 92. The main water outlet pipe 96 is connected to a backwash water outlet pipe 97 and a regeneration water outlet pipe 98. A raw water outlet pipe 99 is also provided inside the resin tank 91 below the resin 92.

[0041] The material and dimensions of the resin tank 91 are determined by the amount of resin and the operating conditions. Typically, a tank and piping made of 304 stainless steel are used. To further improve the filtration effect, an additional precision filter 4 with a precision of 1μm can be installed on the inlet pipe of the resin tank 91 to ensure that the downstream resin system is not affected by suspended solids. A flow meter 12 is installed on the inlet pipe of the resin tank 91 to adjust the water flow into the resin system, ensuring that the inlet water volume and quality match. The inlet pipe connects to the raw water inlet pipe, and the raw water pump delivers mineral water into the precision filter 4, which then enters the ion exchange system 9 to remove bromides from the mineral water. The backwash inlet pipe 94 pumps pure water or deionized water for vertical backwashing via a back suction pump. The regeneration inlet pipe 95 pumps regeneration reagent into the ion exchange system 9 via a regeneration pump to backwash and regenerate the resin. The backwash outlet pipe 97 and the regeneration outlet pipe 98 are used to discharge the backwash and regeneration solution.

[0042] The bottom of the resin tank 91 is provided with an air vent valve 10, and the top of the resin tank 91 is provided with a breather valve 11.

[0043] The aforementioned venting valve 10 is used to vent waste liquid, etc., from the bottom of the resin tank 91. The breather valve 11 is opened to break the vacuum in the resin tank 91 when the resin tank 91 is vented.

[0044] It should be noted that, in order to further improve the bromide removal effect, the resin tanks 91 of multiple ion exchange systems 9 can be connected in series or in parallel. The material of the resin tank 91 body and valves can be fiberglass or carbon steel lined with rubber, carbon steel lined with fluorine, or 304 rubber / plastic lined. The control valves of the resin tank 91 body can be replaced by manual valves, electric valves, or pneumatic valves.

[0045] The material or form of the precision filter 4 can be replaced by UPVC, filter bags, or high-flow pleated filter cartridges;

[0046] The resin regeneration agent can be prepared using a water jet injector or an electric valve head;

[0047] Water pump supply can be replaced by pipe network supply.

[0048] Detailed instructions:

[0049] Ion exchange system 9:

[0050] During operation, open the raw water outlet valve and the raw water inlet valve, and start the raw water pump;

[0051] Regeneration is required once the resin is saturated.

[0052] Initial stage of regeneration: Shut down the system, open the breather valve 11 and the bottom vent valve 10 to drain the resin stock, and close all valves after draining;

[0053] Initial backwash: Open the backwash outlet valve and backwash inlet valve, turn on the backwash pump, use pure water or tap water to enter from the bottom and exit from the top to backwash the resin system. After backwashing is complete, drain the residual liquid and close all pumps and valves.

[0054] Regeneration: Open the regeneration outlet valve and regeneration inlet valve, start the re-pump, and allow the regeneration agent to enter from the bottom and exit from the top to regenerate the resin system. After regeneration is complete, drain the residual liquid and close all valves.

[0055] Secondary backwash: Open the backwash outlet valve and backwash inlet valve, start the backwash pump, use pure water or tap water (bottom in, top out) to backwash the resin system. After backwashing, drain the residual liquid and close all valves.

[0056] Once the resin has been regenerated, it can be reused.

[0057] Explanation of the principle:

[0058] Due to its macroporous characteristics, the bromide removal resin for mineral water exhibits superior physical properties and chemical stability, making it suitable for use in a wide range of pH and temperature conditions. It can meet food-grade standards in drinking water treatment.

[0059] It has a strong ability to resist organic pollution, so it is suitable for water containing high concentrations of organic matter and color. It has a strong ability to remove nitrates, bromides and arsenates in industrial water and domestic drinking water.

[0060] Beneficial effects:

[0061] By utilizing the selective adsorption properties of ion exchange resins on bromide ions in mineral water, bromide ions in mineral water are specifically adsorbed, reducing the bromide ion content. As a result, after the ozone sterilization process at the back end, the level of bromide ions oxidized to bromate will be lower than the national standard, meeting industry requirements.

[0062] Moreover, the device reduces bromide in mineral water without causing loss or damage to mineral ions such as metasilicic acid and strontium.

[0063] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0064] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0065] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A bromide treatment device for mineral water production, characterized in that: It includes a water storage tank, the inlet of which is connected to a natural water source, and the outlet of which is sequentially connected to a sand filter, an activated carbon filter, a precision filter, an ultrafiltration device, a reverse osmosis device, an ultraviolet sterilization device, and an ozone sterilization device. The ultrafiltration device has two outlets, one of which is connected to the inlet of the reverse osmosis device, and the other is connected to an ion exchange system. The outlet of the ion exchange system is connected to the inlet of the ultraviolet sterilization device.

2. The bromide treatment device for mineral water production according to claim 1, characterized in that: The ion exchange system includes a resin tank, in which resin is disposed in the middle. The inlet of the resin tank is connected to the outlet of the ultrafiltration device, and the inlet of the resin tank is higher than the height of the resin. A main water inlet pipe is located below the resin tank, and the main water inlet pipe is connected to a backwash water inlet pipe and a regeneration water inlet pipe. A main water outlet pipe is located above the resin in the resin tank, and the main water outlet pipe is connected to a backwash water outlet pipe and a regeneration water outlet pipe. A raw water outlet pipe is also located below the resin in the resin tank.

3. The bromide treatment device for mineral water production according to claim 2, characterized in that: The resin tank is equipped with an vent valve at the bottom and a breather valve at the top.

4. The bromide treatment device for mineral water production according to claim 2, characterized in that: A flow meter is installed on the pipeline between the resin tank inlet and the ultrafiltration equipment outlet.

5. A bromide treatment device for mineral water production according to claim 2, characterized in that: The resin tank is made of 304 stainless steel.

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