Mine water desalting and recycling device
The mine water desalination and reuse device, which uses a two-stage reverse osmosis system and automated control of cleaning agents, solves the problem of easy clogging of reverse osmosis membranes, achieves efficient and stable mine water treatment, and improves water reuse rate and equipment utilization rate.
Patent Information
- Application Number
- CN202423051036.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing mine water treatment equipment suffers from problems such as easy clogging of reverse osmosis membranes, frequent cleaning, high costs, low treatment efficiency, and inability to meet increasingly stringent water quality reuse standards.
The system employs a two-stage reverse osmosis system and automated control with cleaning agents. It combines sand filter tanks, mechanical filters, and ultrafiltration systems to achieve multi-stage filtration and desalination of mine water. The reverse osmosis system is cleaned periodically with cleaning agents to avoid shutting down the unit.
It improved the utilization rate and desalination efficiency of mine water, reduced the amount of concentrated water, extended the service life of equipment, met the water quality reuse standards, and reduced operating costs.
Smart Images
Figure CN223547747U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mine water reuse technology, specifically a mine water desalination and reuse device. Background Technology
[0002] Coal mining generates a large amount of mine water. Mine water typically contains various impurities, such as silt, colloids, inorganic salt ions, and organic pollutants. Since most mining areas in my country are located in water-scarce regions, the treatment and reuse of mine water has become a crucial aspect of the industry's development.
[0003] In existing technologies, mine water is often filtered using carbon filters, sand filters, and fine filters, followed by reverse osmosis (RO) membrane desalination to achieve mine water reuse. However, in actual operation, after prolonged use, the semi-permeable membrane of the RO filter is easily clogged by ions, dissolved substances, and other large molecules. This necessitates regular cleaning and maintenance, increasing both operating costs and workload. Furthermore, cleaning the semi-permeable membrane often requires shutting down the RO treatment unit, interrupting the mine water treatment process and potentially reducing production efficiency, thus affecting the continuity and economic viability of the entire mine production operation. In addition, traditional mine water treatment processes have limitations in desalination efficiency, failing to meet increasingly stringent water quality reuse standards and environmental emission requirements, and there is significant room for improvement in water resource recovery rates. Therefore, developing a more efficient, stable, and easy-to-maintain mine water desalination and reuse device is particularly necessary.
[0004] Therefore, we propose a mine water desalination and reuse device to solve the problems mentioned above. Utility Model Content
[0005] 1. The technical problem to be solved by the utility model:
[0006] The purpose of this invention is to provide a mine water desalination and reuse device to solve the problems currently found in the market as described in the background.
[0007] 2. Technical Solution:
[0008] To achieve the above objectives, this utility model provides the following technical solution: a mine water desalination and reuse device, comprising a sand filter tank, a mechanical filter, an ultrafiltration system, a first reverse osmosis system, and a second reverse osmosis system. The sand filter tank is used for preliminary filtration of mine water. The outlet of the sand filter tank is connected to the inlet of the mechanical filter through a pipeline. The mechanical filter is used to filter smaller impurities in the mine water. The outlet of the mechanical filter is connected to the inlet of the ultrafiltration system through a second pipeline. The ultrafiltration system is used to remove tiny particles from the mine water.
[0009] The first reverse osmosis system includes a reverse osmosis inlet concentration chamber one and a reverse osmosis deionization side one. The second reverse osmosis system includes a reverse osmosis inlet concentration chamber two and a reverse osmosis deionization side two. Both the first and second reverse osmosis systems are used for reverse osmosis membrane desalination of mine water. The outlet of the ultrafiltration system is connected to the inlet of the first reverse osmosis inlet concentration chamber one of the first reverse osmosis system through a third pipeline, and the outlet of the first reverse osmosis inlet concentration chamber one of the first reverse osmosis system is connected to the inlet of the second reverse osmosis inlet concentration chamber two of the second reverse osmosis system. The outlet of the second reverse osmosis inlet concentration chamber two of the second reverse osmosis system is connected to the second pipeline.
[0010] The first output terminal of the reverse osmosis deionization side of the first reverse osmosis system and the second output terminal of the reverse osmosis deionization side of the second reverse osmosis system are connected to a clean water tank via a fourth pipeline.
[0011] Furthermore, a first pipeline is connected to the side of the sand filter tank. The first pipeline includes a first flow pipe connected to the inlet of the sand filter tank, and a mine water inlet is provided at the end of the first flow pipe. A water pump is installed in the middle of the first flow pipe.
[0012] The above technical solution enables mine water to enter the sand filter tank for preliminary filtration through the mine water inlet under the action of the water pump.
[0013] Furthermore, the second pipeline includes a second flow pipe connected to the outlet of the mechanical filter, and a pipeline booster pump is installed in the middle of the second flow pipe. The output end of the second flow pipe is connected to an ultrafiltration system, which includes a plurality of ultrafilters.
[0014] The above technical solution allows the mine water, after initial filtration, to enter a mechanical filter for further filtration under the pressure of a pipeline booster pump.
[0015] Furthermore, the third pipeline includes a third flow pipe connected to the outlet of the ultrafiltration system, the middle part of the third flow pipe is connected to the cleaning agent inlet, and a first valve body is installed between the third flow pipe and the cleaning agent inlet.
[0016] The above technical solution enables the cleaning agent to enter the third flow pipe from the cleaning agent inlet after the control system opens the first valve body.
[0017] Furthermore, the first reverse osmosis system includes several reverse osmosis filters.
[0018] The above technical solutions enable an expansion of the filtration area for mine water.
[0019] Furthermore, the fourth pipeline includes a discharge pipe that is connected to the first output terminal of the reverse osmosis deionization side of the first reverse osmosis system and the second output terminal of the reverse osmosis deionization side of the second reverse osmosis system, and the other end of the discharge pipe is connected to the inlet of the clear water tank. A second valve body is installed at both the first output terminal of the reverse osmosis deionization side of the first reverse osmosis system and the second output terminal of the reverse osmosis deionization side of the second reverse osmosis system.
[0020] The above technical solution enables the reuse of demineralized water when the second valve body is opened.
[0021] 3. Beneficial effects:
[0022] Compared with the prior art, the mine water desalination and reuse device of this utility model can efficiently remove impurities and salts, ensuring that the water quality meets the standards for reuse. It also reduces the amount of concentrated water by recycling it back to the source, thereby improving the utilization rate of mine water. Furthermore, it facilitates the cleaning of the reverse osmosis system. The specific details are as follows:
[0023] Through two-stage reverse osmosis desalination using the first and second reverse osmosis systems, various inorganic salt ions and small molecule organic matter in the mine water can be effectively removed, resulting in a high desalination rate. This allows the treated mine water to meet reuse standards, making full use of the concentrated water resources and improving the water recovery rate. Furthermore, the outlet of the second reverse osmosis inlet concentrated chamber is connected to the second pipeline, enabling concentrated water recirculation. This allows some incompletely treated water to re-enter the system for further treatment, avoiding water waste and improving the utilization rate of mine water.
[0024] The connection between the third flow pipe and the cleaning agent inlet facilitates regular cleaning of the reverse osmosis system. This effectively removes accumulated dirt and impurities from the system, ensuring filtration and desalination performance and extending the equipment's lifespan. During cleaning, the control system regulates the valve on the concentrate chamber side to periodically discharge high-concentration and high-turbidity water, allowing only the dirtiest portion of the concentrate to be discharged while the remaining concentrate continues to circulate. After cleaning, the cleaning agent inlet valve is closed, restoring normal system operation. This method significantly reduces the amount of concentrate without shutting down the reverse osmosis system. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the second reverse osmosis system of this utility model.
[0027] In the diagram: 1. Mine water inlet; 2. Sand filter tank; 3. Mechanical filter; 4. Ultrafiltration system; 5. First reverse osmosis system; 6. Clean water tank; 7. First flow pipe; 8. Water pump; 9. Second flow pipe; 10. Pipeline booster pump; 11. Third flow pipe; 12. Cleaning agent inlet; 13. Second reverse osmosis system; 14. Discharge pipe; 15. Second valve body; 16. First valve body. Detailed Implementation
[0028] To facilitate understanding of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "equipped with" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Example
[0032] Please see Figure 1-2A mine water desalination and reuse device includes a sand filter tank 2, a mechanical filter 3, an ultrafiltration system 4, a first reverse osmosis system 5, and a second reverse osmosis system 13. The sand filter tank 2 is used for preliminary filtration of the mine water. The outlet of the sand filter tank 2 is connected to the inlet of the mechanical filter 3 through a pipeline. The mechanical filter 3 is used to filter out smaller impurities in the mine water, and the outlet of the mechanical filter 3 is connected to the inlet of the ultrafiltration system 4 through a second pipeline. The ultrafiltration system 4 is used to remove tiny particles from the mine water. The side of the sand filter tank 2 is connected to a first pipeline, which includes a first flow pipe 7 connected to the inlet of the sand filter tank 2. The end of the first flow pipe 7 is provided with a mine water inlet 1, and a water pump 8 is installed in the middle of the first flow pipe 7. The second pipeline includes a second flow pipe 9 connected to the outlet of the mechanical filter 3. A pipeline booster pump 10 is installed in the middle of the second flow pipe 9, and the output end of the second flow pipe 9 is connected to the ultrafiltration system 4. The ultrafiltration system 4 includes several ultrafilters.
[0033] Mine water enters the first flow pipe 7 through the mine water inlet 1 and is transported to the sand filter tank 2 by the action of the water pump 8. The sand filter tank 2 uses the internal filter media to perform preliminary filtration of the mine water, intercepting large suspended particles such as silt. After preliminary filtration, the water enters the mechanical filter 3 through the first pipe. The mechanical filter 3 further filters out smaller impurities such as colloids and small suspended particles. After being filtered by the mechanical filter 3, the water is transported to the ultrafiltration system 4 through the second flow pipe 9 and is transported to the ultrafiltration system 4 by the action of the pipeline booster pump 10. Several ultrafiltration membranes in the ultrafiltration system 4 use ultrafiltration membranes to remove bacteria, viruses, large molecular organic matter, colloids and other tiny particles from the water.
[0034] The first reverse osmosis system 5 includes a reverse osmosis inlet concentration chamber one and a reverse osmosis deionization side one. The second reverse osmosis system 13 includes a reverse osmosis inlet concentration chamber two and a reverse osmosis deionization side two. Both the first reverse osmosis system 5 and the second reverse osmosis system 13 are used for reverse osmosis membrane desalination of mine water. The outlet of the ultrafiltration system 4 is connected to the inlet of the first reverse osmosis inlet concentration chamber one of the first reverse osmosis system 5 through a third pipeline, and the outlet of the first reverse osmosis inlet concentration chamber one of the first reverse osmosis system 5 is connected to the inlet of the second reverse osmosis inlet concentration chamber two of the second reverse osmosis system 13. The outlet of the second reverse osmosis inlet concentration chamber two of the second reverse osmosis system 13 is connected to the second pipeline. The third pipeline includes a third flow pipe 11 connected to the outlet of the ultrafiltration system 4, and the middle part of the third flow pipe 11 is connected to the cleaning agent inlet 1. The system is connected to the third flow pipe 11 and the cleaning agent inlet 12, and a first valve body 16 is installed between them. The first reverse osmosis system 5 includes several reverse osmosis filters. The fourth pipeline includes a discharge pipe 14 that is connected to the first output end of the reverse osmosis deionization side of the first reverse osmosis system 5 and the second output end of the reverse osmosis deionization side of the second reverse osmosis system 13, and the other end of the discharge pipe 14 is connected to the inlet of the clear water tank 6. A second valve body 15 is installed at both the first output end of the reverse osmosis deionization side of the first reverse osmosis system 5 and the second output end of the reverse osmosis deionization side of the second reverse osmosis system 13. The first output end of the reverse osmosis deionization side of the first reverse osmosis system 5 and the second output end of the reverse osmosis deionization side of the second reverse osmosis system 13 are connected to the clear water tank 6 through the fourth pipeline.
[0035] Water treated by ultrafiltration system 4 enters the first reverse osmosis inlet concentration chamber of the first reverse osmosis system 5 through the third flow pipe 11. The reverse osmosis membrane is used for desalination, removing most of the inorganic salt ions and small organic molecules in the water. The concentrated water that has not passed through the reverse osmosis membrane merges with the second reverse osmosis inlet concentration chamber of the second reverse osmosis system 13 from the outlet of the first reverse osmosis inlet concentration chamber 1. This allows the water treated by the first stage of reverse osmosis to enter the second reverse osmosis system 13 for further desalination. The second reverse osmosis system 13 also uses a reverse osmosis membrane for desalination, further improving the desalination effect. The outlet of the second reverse osmosis inlet concentration chamber 2 of the second reverse osmosis system 13 is connected to the second pipeline to achieve partial concentrate return, improving water utilization. The second valve body 15 is opened, and the desalinated water located in the first reverse osmosis deionization side 1 of the first reverse osmosis system 5 and the second reverse osmosis deionization side 2 of the second reverse osmosis system 13 enters the clear water tank 6 through the discharge pipe 14, resulting in reusable clear water.
[0036] When the first valve 16 is opened, the cleaning agent enters the third flow pipe 11 from the cleaning agent inlet 12, facilitating regular cleaning of the reverse osmosis system. This effectively removes accumulated dirt and impurities from inside the reverse osmosis system, ensuring the system's filtration and desalination effects and extending the equipment's service life. During the cleaning process, the control system controls the valve on the concentrate chamber side to periodically discharge high-concentration and high-turbidity water, discharging only the dirtiest portion of the concentrate while allowing the remaining concentrate to continue circulating. After cleaning, the first valve 16 is closed, restoring the system to normal operation. In this way, the amount of concentrate can be significantly reduced without shutting down the reverse osmosis system.
[0037] Working principle: When using this mine water desalination and reuse device, if... Figure 1-2 As shown, mine water is transported to sand filter tank 2 via the first pipeline. Sand filter tank 2 performs preliminary filtration of the mine water, intercepting large suspended particles. Then, it enters mechanical filter 3 via pipeline 1. Mechanical filter 3 further filters out smaller impurities. Subsequently, it is transported to ultrafiltration system 4 via the second pipeline. Ultrafiltration system 4 uses ultrafiltration membranes to remove bacteria, viruses, large organic molecules, colloids, and other small particles from the water. Then, it is transported to the first reverse osmosis system 5 via the third pipeline for reverse osmosis membrane desalination. The desalinated water pressurized into the deionization side of reverse osmosis enters the clear water tank 6 for reuse through discharge pipe 14. The concentrated water that has not passed through the reverse osmosis membrane merges with the outlet of the first reverse osmosis inlet concentration chamber of the first reverse osmosis system 5 and flows into the second reverse osmosis system. The system 13 reverse osmosis inlet concentrate chamber 2 performs secondary reverse osmosis filtration, improving the utilization rate of mine water. When the first valve 16 is opened, the cleaning agent enters the third flow pipe 11 through the cleaning agent inlet 12, effectively removing the dirt and impurities accumulated inside the reverse osmosis system, ensuring the filtration and desalination effect of the system, and extending the service life of the equipment. During the cleaning process, the valve on the concentrate chamber side is controlled by the control system to periodically discharge high-concentration and high-turbidity water, only discharging the dirtiest part of the concentrate, while allowing the remaining concentrate to continue to participate in the circulation treatment. After the cleaning is completed, the first valve 16 is closed to restore the normal operation of the system. In this way, the amount of concentrate is significantly reduced without shutting down the reverse osmosis system.
[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A mine water desalination and reuse device, characterized in that: The system includes a sand filter tank (2), a mechanical filter (3), an ultrafiltration system (4), a first reverse osmosis system (5), and a second reverse osmosis system (13). The sand filter tank (2) is used for preliminary filtration of mine water. The outlet of the sand filter tank (2) is connected to the inlet of the mechanical filter (3) through a pipeline. The mechanical filter (3) is used to filter out smaller impurities in the mine water. The outlet of the mechanical filter (3) is connected to the inlet of the ultrafiltration system (4) through a second pipeline. The ultrafiltration system (4) is used to remove tiny particles from the mine water. The first reverse osmosis system (5) includes a reverse osmosis inlet concentration chamber one and a reverse osmosis deionization side one. The second reverse osmosis system (13) includes a reverse osmosis inlet concentration chamber two and a reverse osmosis deionization side two. Both the first reverse osmosis system (5) and the second reverse osmosis system (13) are used for reverse osmosis membrane desalination of mine water. The outlet of the ultrafiltration system (4) is connected to the inlet of the first reverse osmosis inlet concentration chamber one of the first reverse osmosis system (5) through a third pipeline. The outlet of the first reverse osmosis inlet concentration chamber one of the first reverse osmosis system (5) is connected to the inlet of the second reverse osmosis inlet concentration chamber two of the second reverse osmosis system (13). The outlet of the second reverse osmosis inlet concentration chamber two of the second reverse osmosis system (13) is connected to the second pipeline. The first output end of the reverse osmosis deionization side of the first reverse osmosis system (5) and the second output end of the reverse osmosis deionization side of the second reverse osmosis system (13) are connected to the clean water tank (6) through the fourth pipeline.
2. The mine water desalination and reuse device according to claim 1, characterized in that: The side of the sand filter tank (2) is connected to a first pipeline, which includes a first flow pipe (7) connected to the inlet of the sand filter tank (2), and a mine water inlet (1) is provided at the end of the first flow pipe (7), and a water pump (8) is installed in the middle of the first flow pipe (7).
3. The mine water desalination and reuse device according to claim 1, characterized in that: The second pipeline includes a second flow pipe (9) connected to the outlet of the mechanical filter (3), and a pipeline booster pump (10) is installed in the middle of the second flow pipe (9). The output end of the second flow pipe (9) is connected to the ultrafiltration system (4), which includes a plurality of ultrafilters.
4. The mine water desalination and reuse device according to claim 1, characterized in that: The third pipeline includes a third flow pipe (11) connected to the outlet of the ultrafiltration system (4), the middle of the third flow pipe (11) being connected to the cleaning agent inlet (12), and a first valve body (16) being installed between the third flow pipe (11) and the cleaning agent inlet (12).
5. A mine water desalination and reuse device according to claim 1, characterized in that: The first reverse osmosis system (5) includes several reverse osmosis filters.
6. The mine water desalination and reuse device according to claim 1, characterized in that: The fourth pipeline includes a discharge pipe (14) that is connected to the first output end of the reverse osmosis deionization side of the first reverse osmosis system (5) and the second output end of the reverse osmosis deionization side of the second reverse osmosis system (13), and the other end of the discharge pipe (14) is connected to the inlet of the clear water tank (6). The first output end of the reverse osmosis deionization side of the first reverse osmosis system (5) and the second output end of the reverse osmosis deionization side of the second reverse osmosis system (13) are both equipped with a second valve body (15).