Ozone oxidation and filtration coupled secondary water supply device
By coupling ozone oxidation and filtration into a secondary water supply device, the problem of water quality degradation in secondary water supply equipment is solved, and a stable supply of high-quality water and quantity is achieved. This overcomes the shortcomings of traditional membrane filtration and features automated operation and low maintenance.
Patent Information
- Application Number
- CN202511452153.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2025-11-21
AI Technical Summary
Existing secondary water supply equipment suffers from water quality degradation after prolonged operation. Membrane filtration methods have drawbacks such as rapid flux decay, high maintenance and management requirements, and high energy consumption. There is an urgent need for a secondary water supply device with low maintenance requirements and good effluent quality.
The secondary water supply device, which combines ozone oxidation and filtration, includes an inlet pipe, an ozone generator, an ozone contact box, a primary filter, a secondary filter, a water collection tank, and a backwash pump. Automatic sewage discharge and backwashing are achieved through a PLC controller, and ozone and filters are used to remove pollutants and impurities.
It achieves high-quality secondary water supply, stable water supply, and unattended automatic operation, overcoming the drawbacks of traditional membrane filtration. It also features stable flow rate, long-term stable effluent flux, and simple maintenance and management.
Smart Images
Figure CN120990212A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a secondary water supply device, specifically a secondary water supply device that couples ozone oxidation and filtration, belonging to the technical field of secondary water supply equipment. Background Technology
[0002] Secondary water supply refers to a water supply method that uses water storage and pressurization equipment to deliver tap water to floors or specific areas of high-rise buildings. Because tap water pressure is often insufficient when it enters high-rise buildings or areas at higher elevations, direct water supply cannot meet the demand. Therefore, secondary pressurization and storage are necessary to ensure a stable water supply. Furthermore, some areas also have a need for secondary water supply systems to further improve the water quality of the pipe network.
[0003] Secondary water supply equipment typically consists of water tanks, water pumps, filtration equipment, disinfection equipment, etc. It improves the quality of tap water through pressurization, storage, purification and other means, and supplies it to users in high-rise buildings or specific areas, ensuring that users can obtain sufficient water volume and pressure.
[0004] However, the above process involves long-term water storage and filtration. After long-term operation, the water quality will inevitably decline. Therefore, it is necessary to clean and maintain the equipment regularly to ensure water quality safety. At present, membrane filtration is the core technology to ensure water quality, but it has drawbacks such as rapid flux decline, high maintenance and management requirements, and high energy consumption. Therefore, there is an urgent need for a secondary water supply equipment with low maintenance requirements and good effluent quality.
[0005] In summary, how to propose a secondary water supply device to address the aforementioned technical problems has become a pressing issue for those skilled in the art. Summary of the Invention
[0006] To address the shortcomings of the prior art, this invention provides a secondary water supply device that couples ozone oxidation and filtration.
[0007] The technical solution of the present invention is: a secondary water supply device that couples ozone oxidation and filtration, including an inlet pipe, an ozone generator, an ozone contact box, a primary filter, a secondary filter, a water collection tank, a backwash water pump, and a drain pipe.
[0008] The water inlet pipe is connected to the ozone generator, and the ozone generator, ozone contact box, primary filter, secondary filter and water collection tank are connected in sequence through pipelines.
[0009] A first shut-off valve is installed on the pipeline between the ozone contact box and the primary filter, a second shut-off valve is installed on the pipeline between the primary filter and the secondary filter, and a third shut-off valve is installed on the pipeline between the secondary filter and the water collection tank. Both the primary and secondary filters are connected to a drain pipe at the bottom, and both drain pipes are equipped with backwash drain valves.
[0010] A secondary pressurized water supply pump is installed in the water collection tank. The inlet of the backwash water pump is connected to the water collection tank, and the outlet of the backwash water pump is connected to the primary filter and the secondary filter respectively. A fourth shut-off valve is installed on the pipeline between the backwash water pump and the primary filter, and a fifth shut-off valve is installed on the pipeline between the backwash water pump and the secondary filter.
[0011] The outlet of the secondary filter is connected to the primary filtrate discharge pipe, which is connected to the sewage discharge pipe, and a sixth shut-off valve is installed on the primary filtrate discharge pipe.
[0012] Furthermore, a drain valve is installed at the bottom of the ozone contact box, and the drain valve is connected to the drain pipe.
[0013] Furthermore, it also includes a PLC controller.
[0014] The first, second, third, fourth, fifth, and sixth stop valves, as well as the backwash drain valve and the drain valve, are all electromagnetic stop valves.
[0015] The ozone generator, backwash water pump, first shut-off valve, second shut-off valve, third shut-off valve, fourth shut-off valve, fifth shut-off valve, sixth shut-off valve, backwash drain valve, and sewage valve are all electrically connected to the PLC controller.
[0016] Compared with the prior art, the present invention has the following advantages:
[0017] 1. This invention meets the water quality and quantity requirements of high-quality secondary water supply. An ozone generator 3 stably produces ozone water. The ozone reacts with pollutants in the water, killing bacteria and microorganisms, while simultaneously removing odors, some organic matter, and heavy metals. A primary filter 8 removes suspended particles and large impurities from the water, and a secondary filter 13 removes fine particles down to the micron level and some nanoparticles, ensuring that the water cleanliness meets standards.
[0018] 2. This invention is stable and reliable in operation, and can achieve unattended and automatic operation. It generates ozone in situ without the need for additional reagents. It can operate continuously and stably for 24 hours through automatic sewage discharge and automatic backwashing via PLC controller 31.
[0019] 3. This invention differs from traditional membrane filtration methods such as microfiltration and ultrafiltration. The flow rates of the primary filter 8 and the secondary filter 13 are more stable, and the backwashing effect is better. It can achieve backwashing of clean water and long-term stable effluent flux, effectively overcoming the drawbacks of membrane filtration methods such as rapid flux decay, high maintenance and management requirements, and high energy consumption. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the present invention;
[0021] Figure 2 This is a schematic diagram of the primary filter 8 in this invention;
[0022] Figure 3 This is a schematic diagram of the secondary filter 13 in this invention.
[0023] In the diagram: 1. Inlet pipe; 2. Residual chlorine online monitor; 3. Ozone generator; 4. Ozone concentration online detector; 5. Ozone contact box; 7. First shut-off valve; 8. Primary filter; 9. First electromagnetic vent valve; 10. Primary filter element; 11. Primary water collection plate; 12. Second shut-off valve; 13. Secondary filter; 14. Second electromagnetic vent valve; 15. Secondary filter element; 16. Secondary water collection plate; 17. Third shut-off valve; 18. Water quality online monitor; 19. Secondary pressurized water supply pump; 20. Backwash water pump; 21. Fourth shut-off valve; 22. Fifth shut-off valve; 23. Backwash drain valve; 24. Sixth shut-off valve; 26. Water collection tank; 29. Drain valve; 30. Drain pipe; 31. PLC controller; 32. Pre-filtered water discharge pipe. Detailed Implementation
[0024] To make the objectives, features, and advantages of the present invention more apparent and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0025] Specific implementation method one: Combining Figures 1 to 3 This embodiment describes a secondary water supply device that couples ozone oxidation and filtration, comprising an inlet pipe 1, an ozone generator 3, an ozone contact box 5, a primary filter 8, a secondary filter 13, a water collection tank 26, and a backwash water pump 20.
[0026] The water inlet pipe 1 is connected to the ozone generator 3. The ozone generator 3, ozone contact box 5, primary filter 8, secondary filter 13 and water collection tank 26 are connected in sequence through pipelines. Furthermore, the ozone generator 3 is an electrolytic ozone generator. The ozone generator 3 uses direct current to electrolyze water to produce high-concentration ozone water. In this embodiment, the ozone water concentration is set to 1.5 mg / L.
[0027] The contact time between ozone and water in the ozone contact box 5 is 10 minutes, and the bottom of the inner cavity of the ozone contact box 5 has a 1% slope. This setting facilitates the discharge of pollutants in the ozone contact box 5 in the direction of water flow. Furthermore, a first shut-off valve 7 is installed on the pipeline between the ozone contact box 5 and the primary filter 8, a second shut-off valve 12 is installed on the pipeline between the primary filter 8 and the secondary filter 13, and a third shut-off valve 17 is installed on the pipeline between the secondary filter 13 and the water collection tank 26. The lower parts of the primary filter 8 and the secondary filter 13 are both connected to a drain pipe 30, and a backwash drain valve 23 is installed on both drain pipes 30.
[0028] A secondary pressurized water supply pump 19 is installed in the water collection tank 26. The inlet of the backwash water pump 20 is connected to the water collection tank 26. The outlet of the backwash water pump 20 is connected to the primary filter 8 and the secondary filter 13 respectively. A fourth shut-off valve 21 is installed on the pipeline between the backwash water pump 20 and the primary filter 8, and a fifth shut-off valve 22 is installed on the pipeline between the backwash water pump 20 and the secondary filter 13.
[0029] The outlet of the secondary filter 13 is connected to the primary filtrate discharge pipe 32, which is connected to the sewage pipe 30, and a sixth shut-off valve 24 is installed on the primary filtrate discharge pipe 32.
[0030] Specific Implementation Method Two: Combining Figures 1 to 3 In this embodiment, a drain valve 29 is installed at the bottom of the ozone contact box 5, and the drain valve 29 is connected to the drain pipe 30. Other components and connections are the same as in specific embodiment one.
[0031] Specific implementation method three: Combining Figures 1 to 3 This embodiment is described below. This embodiment also includes a PLC controller 31.
[0032] The first shut-off valve 7, the second shut-off valve 12, the third shut-off valve 17, the fourth shut-off valve 21, the fifth shut-off valve 22, the sixth shut-off valve 24, the backwash drain valve 23, and the drain valve 29 are all electromagnetic shut-off valves.
[0033] The ozone generator 3, backwash water pump 20, first shut-off valve 7, second shut-off valve 12, third shut-off valve 17, fourth shut-off valve 21, fifth shut-off valve 22, sixth shut-off valve 24, backwash drain valve 23 and drain valve 29 are all electrically connected to the PLC controller 31.
[0034] The other components and connections are the same as in specific implementation method one or two.
[0035] Specific implementation method four: Combination Figures 1 to 3 This embodiment describes a primary filter 8, which includes a filter housing, a primary filter element 10, and a primary water collection plate 11.
[0036] A first electromagnetic exhaust valve 9 is installed on the filter housing, and the first electromagnetic exhaust valve 9 is electrically connected to the PLC controller 31.
[0037] Both the primary filter element 10 and the primary water collection plate 11 are installed inside the filter housing, with the primary filter element 10 positioned above the primary water collection plate 11; the effective filtration accuracy of the primary filter element 10 is 6 microns.
[0038] Furthermore, the secondary filter 13 includes a filter housing, a secondary filter element 15, and a secondary water collection plate 16.
[0039] A second electromagnetic exhaust valve 14 is installed on the filter housing, and the second electromagnetic exhaust valve 14 is electrically connected to the PLC controller 31.
[0040] The secondary filter element 15 and the secondary water collection plate 16 are both installed inside the filter housing, and the secondary filter element 15 is arranged above the secondary water collection plate 16. The secondary filter element 15 is a metal sintered filter element, preferably made of 316L stainless steel powder and δ-MnOx powder (manganese oxide powder with layered crystal structure) co-doped and sintered. It can catalyze ozone to generate highly efficient active oxygen to further remove refractory organic pollutants in the water, and its effective filtration accuracy is 0.1 microns.
[0041] The other components and connections are the same as those in specific implementation methods one, two, or three.
[0042] Specific Implementation Method Five: Combining Figures 1 to 3 This embodiment describes an online residual chlorine monitoring device 2 installed on the water inlet pipe 1.
[0043] Furthermore, an online water quality monitoring instrument 18 is installed on the pipeline between the secondary filter 13 and the water collection tank 26.
[0044] Furthermore, an online ozone concentration detector 4 is installed on the pipeline between the ozone generator 3 and the ozone contact box 5.
[0045] Furthermore, an online ozone concentration detector 4 is installed on the pipeline between the ozone contact box 5 and the primary filter 8.
[0046] The other components and connections are the same as those in specific implementation methods one, two, three, or four.
[0047] Working principle
[0048] During normal water supply, the first shut-off valve 7, the second shut-off valve 12, and the third shut-off valve 17 are all open, while the fourth shut-off valve 21, the fifth shut-off valve 22, the sixth shut-off valve 24, the drain valve 29, and the two backwash drain valves 23 are all closed.
[0049] Municipal tap water flows sequentially through inlet pipe 1, residual chlorine online monitor 2, ozone generator 3, ozone concentration online detector 4, ozone contact box 5, ozone concentration online detector 4, primary filter 8, secondary filter 13, and water quality online monitor 18 before entering collection tank 26. It is then supplied to users in high-rise buildings or specific areas by secondary pressurized water supply pump 19.
[0050] When the present invention has been running for a period of time, backwashing is performed. The backwashing interval can be set by the PLC controller 31 and executed automatically to ensure water quality safety. During the backwashing process, the fourth stop valve 21, the fifth stop valve 22 and the two backwash drain valves 23 are all open, while the first stop valve 7, the second stop valve 12, the third stop valve 17, the sixth stop valve 24 and the drain valve 29 are all closed.
[0051] Water in the collection tank 26 is pumped by the backwash pump 20 into the primary filter 8 and the secondary filter 13, respectively. The dirt on the primary filter element 10 and the secondary filter element 15 is effectively flushed out, and the backwashed wastewater is discharged through the drain pipe 30. To avoid fluctuations in water quality after backwashing, the first shut-off valve 7, the second shut-off valve 12, and the sixth shut-off valve 24 are all opened after backwashing, while the third shut-off valve 17, the fourth shut-off valve 21, the fifth shut-off valve 22, the drain valve 29, and the two backwash drain valves 23 are all closed. A portion of the municipal tap water flows sequentially through the inlet pipe 1, the residual chlorine online monitor 2, the ozone generator 3, the ozone concentration online detector 4, the ozone contact box 5, the ozone concentration online detector 4, the primary filter 8, and the secondary filter 13, before being discharged from the primary filtrate discharge pipe 32.
[0052] After backwashing, sewage discharge is carried out immediately to ensure water quality safety. During the sewage discharge process, the first shut-off valve 7, the second shut-off valve 12, the third shut-off valve 17, the fourth shut-off valve 21, the fifth shut-off valve 22, the sixth shut-off valve 24, and the two backwash drain valves 23 are all closed. The sewage discharge valve 29 is opened separately, allowing municipal tap water to sequentially flush the inlet pipe 1, the residual chlorine online monitor 2, the ozone generator 3, the ozone concentration online detector 4, and the ozone contact box 5 before being discharged from the sewage discharge pipe 30.
[0053] Next, close the drain valve 29, and then open the first electromagnetic vent valve 9, the second electromagnetic vent valve 14, and the two backwash drain valves 23; so that the water in the primary filter 8 and the secondary filter 13 can be discharged from the drain pipe 30, thus removing the sewage and dirt that could not be effectively discharged during the backwashing period. After the sewage is discharged, normal water supply can be restored.
[0054] The present invention has been disclosed above with preferred embodiments, but it is not intended to limit the present invention. Any simple modifications, equivalent changes and alterations made by those skilled in the art to the above embodiments without departing from the technical solution of the present invention, based on the technical essence of the present invention, shall still fall within the scope of the technical solution of the present invention.
Claims
1. A secondary water supply device coupling ozone oxidation and filtration, characterized in that: It includes an inlet pipe (1), an ozone generator (3), an ozone contact box (5), a primary filter (8), a secondary filter (13), a water collection tank (26), and a backwash pump (20). The water inlet pipe (1) is connected to the ozone generator (3), and the ozone generator (3), ozone contact box (5), primary filter (8), secondary filter (13) and water collection tank (26) are connected in sequence through pipelines; A first shut-off valve (7) is installed on the pipeline between the ozone contact box (5) and the primary filter (8), a second shut-off valve (12) is installed on the pipeline between the primary filter (8) and the secondary filter (13), a third shut-off valve (17) is installed on the pipeline between the secondary filter (13) and the water collection tank (26), and a drain pipe (30) is connected to the lower part of both the primary filter (8) and the secondary filter (13), and a backwash drain valve (23) is installed on both drain pipes (30); A secondary pressurized water supply pump (19) is installed in the water collection tank (26). The inlet of the backwash water pump (20) is connected to the water collection tank (26). The outlet of the backwash water pump (20) is connected to the primary filter (8) and the secondary filter (13) respectively. A fourth shut-off valve (21) is installed on the pipeline between the backwash water pump (20) and the primary filter (8). A fifth shut-off valve (22) is installed on the pipeline between the backwash water pump (20) and the secondary filter (13). The outlet of the secondary filter (13) is connected to the primary filter discharge pipe (32), which is connected to the sewage pipe (30), and a sixth shut-off valve (24) is installed on the primary filter discharge pipe (32).
2. The secondary water supply device coupling ozone oxidation and filtration according to claim 1, characterized in that: The bottom of the ozone contact box (5) is equipped with a drain valve (29), which is connected to the drain pipe (30).
3. The secondary water supply device coupling ozone oxidation and filtration according to claim 2, characterized in that: It also includes a PLC controller (31); The first shut-off valve (7), the second shut-off valve (12), the third shut-off valve (17), the fourth shut-off valve (21), the fifth shut-off valve (22), the sixth shut-off valve (24), the backwash drain valve (23), and the drain valve (29) are all electromagnetic shut-off valves; The ozone generator (3), backwash water pump (20), first shut-off valve (7), second shut-off valve (12), third shut-off valve (17), fourth shut-off valve (21), fifth shut-off valve (22), sixth shut-off valve (24), backwash drain valve (23) and drain valve (29) are all electrically connected to the PLC controller (31).
4. The secondary water supply device coupling ozone oxidation and filtration according to claim 3, characterized in that: The primary filter (8) includes a filter housing, a primary filter element (10), and a primary water collection plate (11). A first electromagnetic exhaust valve (9) is installed on the filter housing, and the first electromagnetic exhaust valve (9) is electrically connected to the PLC controller (31); The primary filter element (10) and the primary water collection plate (11) are both installed inside the filter housing, and the primary filter element (10) is arranged above the primary water collection plate (11).
5. A secondary water supply device coupling ozone oxidation and filtration according to claim 1, characterized in that: The secondary filter (13) includes a filter housing, a secondary filter element (15), and a secondary water collection plate (16). A second electromagnetic exhaust valve (14) is installed on the filter housing, and the second electromagnetic exhaust valve (14) is electrically connected to the PLC controller (31); The secondary filter element (15) and the secondary water collection plate (16) are both installed inside the filter housing, and the secondary filter element (15) is arranged above the secondary water collection plate (16).
6. A secondary water supply device coupling ozone oxidation and filtration according to claim 3, characterized in that: An online residual chlorine monitor (2) is installed on the water inlet pipe (1).
7. A secondary water supply device coupling ozone oxidation and filtration according to claim 6, characterized in that: An online water quality monitoring instrument (18) is installed on the pipeline between the secondary filter (13) and the water collection tank (26).
8. A secondary water supply device coupling ozone oxidation and filtration according to claim 7, characterized in that: The ozone generator (3) is an electrolytic ozone generator.
9. A secondary water supply device coupling ozone oxidation and filtration according to claim 8, characterized in that: An online ozone concentration detector (4) is installed on the pipeline between the ozone generator (3) and the ozone contact box (5).
10. A secondary water supply device coupling ozone oxidation and filtration according to claim 9, characterized in that: An online ozone concentration detector (4) is installed on the pipeline between the ozone contact box (5) and the primary filter (8).