Manganese removal and water purification filter for water plant

Abstract

The manganese removal and water purification filter comprises an iron removal tank and a manganese removal tank, the top of the iron removal tank is connected with a raw water injection pipe, the upper portion of a tank body of the iron removal tank is connected with an ozone injection pipe, activated carbon particles are laid at the bottom of an inner cavity of the iron removal tank, and the iron removal tank is connected with the manganese removal tank through a communicating pipe. One end of the communicating pipe is connected with the lower portion of the iron removal tank body, the other end of the communicating pipe is connected with the top of the manganese removal tank, a first porous filter plate used for preventing activated carbon particles from entering the communicating pipe is arranged in the iron removal tank, a first water pump is installed on the communicating pipe, the upper portion of the manganese removal tank body is connected with an oxygen injection pipe, and manganese sand is laid at the bottom of an inner cavity of the manganese removal tank. A water outlet pipe is connected to the lower portion of the manganese removal tank body, a second porous filter plate used for preventing manganese sand from entering the water outlet pipe is arranged in the manganese removal tank, and a second water pump is installed on the water outlet pipe. Divalent iron in raw water is firstly removed to prevent the divalent iron from hindering oxidation of divalent manganese, so that the aim of improving the manganese removal effect of the water plant is fulfilled.

Description

Technical Field

[0001] This utility model belongs to the technical field of water treatment equipment, and in particular relates to a water purification filter used to remove manganese from water in water plants. Background Technology

[0002] Manganese is a common heavy metal pollutant in water bodies. Excessive manganese can lead to water turbidity, pipe blockage, and harm to human health. Current manganese removal technologies mainly rely on chemical oxidation methods, such as potassium permanganate oxidation. Chemical oxidation methods require continuous addition of reagents, which is costly. If the manganese content in the raw water is low, adding manganese dioxide can easily cause secondary pollution.

[0003] Therefore, when the manganese content in the raw water is low, water plants generally use water filters to remove manganese from the raw water. By laying manganese sand in the filter, an active oxide film forms on the surface of the manganese sand, adsorbing divalent manganese ions and catalyzing their oxidation to trivalent manganese ions, forming water-insoluble hydroxides. Oxygen is also added to the raw water to increase the dissolved oxygen content and accelerate the oxidation reaction of divalent manganese ions. However, iron and manganese often coexist in the water. Divalent iron will reduce the high-valent manganese back to divalent manganese, hindering the oxidation of divalent manganese and reducing the manganese removal efficiency of the water plant. Utility Model Content

[0004] The purpose of this invention is to remove ferrous iron from the raw water by adding an iron removal tank, thereby solving the problem in the background art where ferrous iron in the raw water reduces high-valent manganese back to ferrous manganese, hindering the oxidation of ferrous manganese and reducing the manganese removal effect of the water plant.

[0005] The specific technical solution of this utility model is as follows:

[0006] A manganese removal water filter for water plants includes an iron removal tank and a manganese removal tank. The top of the iron removal tank is connected to a raw water injection pipe, and the upper part of the iron removal tank is connected to an ozone injection pipe. The bottom of the inner cavity of the iron removal tank is lined with an activated carbon filter media layer. The iron removal tank and the manganese removal tank are connected by a connecting pipe. One end of the connecting pipe is connected to the lower part of the iron removal tank, and the other end is connected to the top of the manganese removal tank. A porous filter plate is installed inside the iron removal tank to prevent activated carbon particles from entering the connecting pipe. A water pump is installed on the connecting pipe. The upper part of the manganese removal tank is connected to an oxygen injection pipe, and the bottom of the inner cavity of the manganese removal tank is lined with a manganese sand filter media layer. The lower part of the manganese removal tank is connected to an outlet pipe, and a porous filter plate is installed inside the manganese removal tank to prevent manganese sand from entering the outlet pipe. A second water pump is installed on the outlet pipe.

[0007] Furthermore, exhaust pipes are installed on the tops of the iron removal tank and the manganese removal tank, and safety valves are installed on the tops of the exhaust pipes.

[0008] Furthermore, a viewing window 1 is provided on the wall of the iron removal tank, and a viewing window 2 is provided on the wall of the manganese removal tank. Both viewing windows 1 and 2 are vertically elongated structures and are made of transparent material.

[0009] Furthermore, a porous filter plate is inclinedly installed at the bottom of the iron removal tank. The porous filter plate is fixedly connected to the inner wall and bottom surface of the iron removal tank. The porous filter plate divides the inner cavity of the iron removal tank into an iron removal reaction chamber and a first water filtration chamber. One end of the connecting pipe is connected to the first water filtration chamber.

[0010] Furthermore, the bottom of the iron removal tank is provided with several support legs, and the bottom of the iron removal reaction chamber is connected to a first discharge pipe, which is equipped with a first sealing cover.

[0011] Furthermore, a porous filter plate 2 is inclinedly installed at the bottom of the manganese removal tank. The porous filter plate 2 is fixedly connected to the inner wall and bottom surface of the manganese removal tank. The porous filter plate 2 divides the manganese removal tank into a manganese removal reaction chamber and a second water filtration chamber. One end of the water outlet pipe is connected to the second water filtration chamber.

[0012] Furthermore, the bottom of the manganese removal tank is equipped with several support legs, and the bottom of the manganese removal reaction chamber is connected to a second discharge pipe, which is equipped with a second sealing cover.

[0013] Furthermore, in addition to the iron can being equipped with a disc-shaped gas outlet inside, with several gas outlet holes arrayed on the surface of the disc-shaped gas outlet, which is connected to the ozone injection pipe, the manganese can also be equipped with a disc-shaped gas outlet inside, which is connected to the oxygen injection pipe.

[0014] Furthermore, several air outlets are arrayed on the upper front surface of the disc air outlet and several air outlets are arrayed on the lower rear surface of the disc air outlet. The disc air outlet is rotatably connected to the ozone injection pipe and the oxygen injection pipe via rotary joints.

[0015] Furthermore, Y-type filters are installed at the inlets of pumps No. 1 and No. 2 respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Raw water first enters the iron removal tank through the raw water injection pipe. Ozone is then injected into the iron removal tank through the ozone injection pipe. Ozone has a strong oxidizing ability, directly oxidizing soluble ferrous iron into ferric iron (Fe3+) in a higher valence state. The ferrous iron further hydrolyzes in the water, forming insoluble ferric hydroxide precipitate. This precipitate is adsorbed by the activated carbon filter media. The water with the ferrous iron removed is then injected into the manganese removal tank. Oxygen is injected into the manganese removal tank through the oxygen injection pipe, increasing the dissolved oxygen concentration in the water. The oxygenated water flows through the manganese sand filter media, where ferrous manganese is catalytically oxidized into manganese dioxide precipitate, which is then adsorbed on the surface of the manganese sand filter media, achieving the effect of manganese removal. By removing the ferrous iron in the raw water in advance, the oxidation of ferrous manganese is effectively prevented, thus improving the manganese removal efficiency of the water plant. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0019] Figure 2 This is a three-dimensional schematic diagram of the rear structure of an embodiment of the present utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the bottom structure of an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the iron can in a partial cross-sectional view in an embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the manganese tank in a partial cross-sectional view in an embodiment of this utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the disc-shaped air outlet component in an embodiment of this utility model;

[0024] Figure label:

[0025] 1. Iron removal tank; 11. Raw water injection pipe; 12. Ozone injection pipe; 13. Porous filter plate; 14. Viewing window; 15. Iron removal reaction chamber; 16. First water filtration chamber; 17. First discharge pipe; 171. First sealing cover; 18. Support leg;

[0026] 2. Manganese removal tank; 21. Oxygen injection pipe; 22. Second porous filter plate; 23. Second viewing window; 24. Manganese removal reaction chamber; 25. Second water filtration chamber; 26. Second discharge pipe; 261. Second sealing cover; 27. Second support leg;

[0027] 3. Connecting pipe; 31. No. 1 water pump;

[0028] 4. Water outlet pipe; 41. No. 2 water pump;

[0029] 5. Exhaust pipe; 51. Safety valve;

[0030] 6. Disc-shaped air outlet; 61. Air outlet; 62. Rotary joint;

[0031] 7. Y-type filter. Detailed Implementation

[0032] To better understand the purpose, structure, and function of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0033] See Figures 1 to 6 This embodiment discloses a manganese removal water filter for a water plant, including an iron removal tank 1 and a manganese removal tank 2. The top of the iron removal tank 1 is connected to a raw water injection pipe 11, and the upper part of the iron removal tank 1 is connected to an ozone injection pipe 12. An activated carbon filter layer is laid at the bottom of the inner cavity of the iron removal tank 1. The iron removal tank 1 and the manganese removal tank 2 are connected by a connecting pipe 3. One end of the connecting pipe 3 is connected to the lower part of the iron removal tank 1, and the other end is connected to the top of the manganese removal tank 2. A porous filter plate 13 is installed inside the iron removal tank 1 to prevent activated carbon particles from entering the connecting pipe 3. A water pump 31 is installed on the connecting pipe 3 to inject the water from the iron removal tank 1 (after removing ferrous iron) into the manganese removal tank 2. An oxygen injection pipe 21 is connected to the upper part of the manganese removal tank 2, and a manganese sand filter layer is laid at the bottom of the inner cavity of the manganese removal tank 2. A water outlet pipe 4 is connected to the lower part of the manganese removal tank 2, and a porous filter plate 13 is installed inside the manganese removal tank 2 to prevent manganese sand from entering the water outlet pipe 4. Plate 22 has a second water pump 41 installed on the outlet pipe 4 to pump out the manganese-removed water. The raw water first enters the iron removal tank 1 through the raw water injection pipe 11. Ozone is injected into the iron removal tank 1 through the ozone injection pipe 12. Ozone has a strong oxidizing ability and directly oxidizes soluble ferrous iron into ferric iron in a higher valence state. The ferrous iron is further hydrolyzed in the water to form insoluble ferric hydroxide precipitate. The ferric hydroxide precipitate is adsorbed by the activated carbon filter media layer. Then the water with ferrous iron removed is injected into the manganese removal tank 2. Oxygen is injected into the manganese removal tank 2 through the oxygen injection pipe 21 to increase the dissolved oxygen concentration in the water. The oxygenated water flows through the manganese sand filter media layer, where ferrous manganese is catalytically oxidized into manganese dioxide precipitate and adsorbed on the surface of the manganese sand filter media, achieving the effect of manganese removal. Because the ferrous iron in the raw water is removed in advance, it effectively prevents the ferrous iron from hindering the oxidation of ferrous manganese, thus improving the manganese removal effect of the water plant.

[0034] The tops of the iron removal tank 1 and the manganese removal tank 2 are respectively equipped with exhaust pipes 5, and the tops of the exhaust pipes 5 are equipped with safety valves 51. When the pressure inside the iron removal tank 1 and the manganese removal tank 2 is overloaded, the safety valves 51 will automatically open to reduce the pressure inside the iron removal tank 1 and the manganese removal tank 2 by releasing some gas, thus protecting the iron removal tank 1, the manganese removal tank 2 and the connecting pipe 3 from overpressure damage.

[0035] A viewing window 14 is provided on the wall of the iron removal tank 1, and a viewing window 23 is provided on the wall of the manganese removal tank 2. Both the viewing window 14 and the viewing window 23 are vertical elongated structures and are made of transparent material. In this embodiment, acrylic is preferred because it has strong impact resistance and will not form sharp edges even if it breaks, making it safer than glass.

[0036] A porous filter plate 13 is inclinedly installed at the bottom of the inner cavity of the iron removal tank 1. The porous filter plate 13 is fixedly connected to the inner wall and bottom surface of the iron removal tank 1. The porous filter plate 13 divides the inner cavity of the iron removal tank 1 into an iron removal reaction chamber 15 and a first water filtration chamber 16. An activated carbon filter media layer is laid at the bottom of the iron removal reaction chamber 15 and covers the porous filter plate 13. The porous filter plate 13 is inclined so that the activated carbon filter media can slide off the porous filter plate 13 when it is replaced, ensuring that the activated carbon filter media is replaced completely and without any residue. Water passes through the activated carbon filter... The filter media enters the first water filtration chamber 16. One end of the connecting pipe 3 is connected to the first water filtration chamber 16, and the filtered water is extracted and injected into the manganese removal tank 2. The bottom of the iron removal tank 1 is provided with several support legs 18. The bottom of the iron removal reaction chamber 15 is connected to the first discharge pipe 17, which is equipped with a first sealing cover 171. When the activated carbon filter media needs to be replaced, simply open the first sealing cover 171, and the activated carbon filter media will flow out from the first discharge pipe 17. In this embodiment, the first sealing cover 171 and the first discharge pipe 17 are threadedly connected. The threaded connection structure is simple. Simple, reliable and durable. A porous filter plate 22 is inclinedly installed at the bottom of the manganese removal tank 2. The porous filter plate 22 is fixedly connected to the inner wall and bottom surface of the manganese removal tank 2. The porous filter plate 22 divides the inner cavity of the manganese removal tank 2 into a manganese removal reaction chamber 24 and a second water filtration chamber 25. A manganese sand filter media layer is laid at the bottom of the manganese removal reaction chamber 24 and covers the porous filter plate 22. The inclined placement of the porous filter plate 22 facilitates the sliding of the manganese sand filter media off the porous filter plate 22 when replacing the manganese sand filter media layer, ensuring sufficient replacement of the manganese sand filter media and preventing any residue. Water passes through... The manganese sand filter media layer enters the second water filtration chamber 25. One end of the water outlet pipe 4 is connected to the second water filtration chamber 25 to extract the filtered water. The bottom of the manganese removal tank 2 is provided with several support legs 27. The bottom of the manganese removal reaction chamber 24 is connected to the second discharge pipe 26. The second discharge pipe 26 is equipped with a second sealing cover 261. When it is necessary to replace the manganese sand filter media, simply open the second sealing cover 261, and the manganese sand filter media will flow out from the second discharge pipe 26. In this embodiment, the second discharge pipe 26 and the second sealing cover 261 are threadedly connected. The threaded connection structure is simple, reliable and durable.

[0037] The iron can 1 has a disc-shaped gas outlet 6 inside, with several gas outlet holes 61 arranged in an array on its surface. The disc-shaped gas outlet 6 is connected to the ozone injection pipe 12. The disc-shaped gas outlet 6 increases the contact area between ozone and water, thereby improving the oxidation efficiency of divalent iron. The manganese can 2 also has a disc-shaped gas outlet 6 inside, which is connected to the oxygen injection pipe 21. The disc-shaped gas outlet 6 increases the contact area between oxygen and water, thereby improving the oxidation efficiency of divalent manganese.

[0038] Several air outlets 61 are arrayed on the upper front surface of the disc air outlet 6, and several air outlets 61 are arrayed on the lower rear surface of the disc air outlet 6. The disc air outlet 6 is rotatably connected to the ozone injection pipe 12 and the oxygen injection pipe 21 through a rotary joint 62. Since the air outlets 61 on both sides of the disc air outlet 6 are arranged vertically opposite each other, when gas is discharged from the air outlets 61, the disc air outlet 6 will continue to rotate due to the reverse thrust of the gas on both sides of the disc air outlet 6, which further improves the contact effect of ozone and oxygen with water.

[0039] Y-type filters 7 are installed at the inlet of pump 31 and pump 41 respectively. The Y-type filters 7 trap solid impurities in the water through built-in filter screens to prevent them from entering pump 31 and pump 41 and causing wear or blockage.

[0040] Working principle: Raw water first enters the iron removal tank 1 through the raw water injection pipe 11. Ozone is then injected into the iron removal tank 1 through the ozone injection pipe 12. Ozone has a strong oxidizing ability and directly oxidizes soluble ferrous iron into ferric iron. The ferrous iron further hydrolyzes in the water to form insoluble ferric hydroxide precipitate. The ferric hydroxide precipitate is adsorbed by the activated carbon filter media layer. Then, the water with ferrous iron removed is injected into the manganese removal tank 2. Oxygen is injected into the manganese removal tank 2 through the oxygen injection pipe 21 to increase the dissolved oxygen concentration in the water. The oxygenated water flows through the manganese sand filter media layer, where ferrous manganese is catalytically oxidized into manganese dioxide precipitate and adsorbed on the surface of the manganese sand filter media, thus achieving the effect of manganese removal.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A manganese removal water filter for water treatment plants, characterized in that: The system includes an iron removal tank (1) and a manganese removal tank (2). The top of the iron removal tank (1) is connected to a raw water injection pipe (11), and the upper part of the iron removal tank (1) is connected to an ozone injection pipe (12). The bottom of the inner cavity of the iron removal tank (1) is lined with an activated carbon filter layer. The iron removal tank (1) and the manganese removal tank (2) are connected by a connecting pipe (3). One end of the connecting pipe (3) is connected to the lower part of the iron removal tank (1), and the other end of the connecting pipe (3) is connected to the top of the manganese removal tank (2). Inside the iron removal tank (1), there is a device for preventing activated carbon from entering the tank. Carbon particles enter the porous filter plate 1 (13) of the connecting pipe (3). A water pump (31) is installed on the connecting pipe (3). An oxygen injection pipe (21) is connected to the upper part of the manganese removal tank (2). A manganese sand filter material layer is laid at the bottom of the inner cavity of the manganese removal tank (2). A water outlet pipe (4) is connected to the lower part of the manganese removal tank (2). A porous filter plate 2 (22) is provided inside the manganese removal tank (2) to prevent manganese sand from entering the water outlet pipe (4). A water pump (41) is installed on the water outlet pipe (4).

2. The water treatment plant manganese removal filter according to claim 1, characterized in that, The top of the iron removal tank (1) and the manganese removal tank (2) are respectively equipped with exhaust pipes (5), and a safety valve (51) is installed on the top of the exhaust pipes (5).

3. The water treatment plant manganese removal filter according to claim 1, characterized in that, A viewing window 1 (14) is provided on the wall of the iron removal tank (1), and a viewing window 2 (23) is provided on the wall of the manganese removal tank (2). Both the viewing window 1 (14) and the viewing window 2 (23) are vertical elongated structures and are made of transparent material.

4. The water treatment plant manganese removal filter according to claim 1, characterized in that, A porous filter plate (13) is inclinedly installed at the bottom of the inner cavity of the iron removal tank (1). The porous filter plate (13) is fixedly connected to the inner wall and bottom surface of the iron removal tank (1). The porous filter plate (13) divides the inner cavity of the iron removal tank (1) into an iron removal reaction chamber (15) and a first water filtration chamber (16). One end of the connecting pipe (3) is connected to the first water filtration chamber (16).

5. The water treatment plant manganese removal filter according to claim 4, characterized in that, The bottom of the iron removal tank (1) is provided with several support legs (18), and the bottom of the iron removal reaction chamber (15) is connected to the first discharge pipe (17), which is equipped with a first sealing cover (171).

6. The water treatment plant manganese removal filter according to claim 1, characterized in that, A porous filter plate (22) is inclinedly installed at the bottom of the inner cavity of the manganese removal tank (2). The porous filter plate (22) is fixedly connected to the inner wall and bottom surface of the manganese removal tank (2). The porous filter plate (22) divides the inner cavity of the manganese removal tank (2) into a manganese removal reaction chamber (24) and a second water filtration chamber (25). One end of the water outlet pipe (4) is connected to the second water filtration chamber (25).

7. The water treatment plant manganese removal filter according to claim 6, characterized in that, The bottom of the manganese removal tank (2) is provided with several support legs (27), and the bottom of the manganese removal reaction chamber (24) is connected to a second discharge pipe (26), which is equipped with a second sealing cover (261).

8. The water treatment plant manganese removal filter according to claim 1, characterized in that, The iron can (1) has a disc-shaped air outlet (6) inside, and several air outlet holes (61) are arranged on the surface of the disc-shaped air outlet (6). The disc-shaped air outlet (6) is connected to the ozone injection pipe (12). The manganese can (2) also has a disc-shaped air outlet (6) inside, and the disc-shaped air outlet (6) is connected to the oxygen injection pipe (21).

9. The water treatment plant manganese removal filter according to claim 8, characterized in that, Several air outlets (61) are arranged in an array on the upper front surface of the disc air outlet (6), and several air outlets (61) are arranged in an array on the lower rear surface of the disc air outlet (6). The disc air outlet (6) is rotatably connected to the ozone injection pipe (12) and the oxygen injection pipe (21) through a rotary joint (62).

10. The water treatment plant manganese removal filter according to claim 1, characterized in that, Y-type filters (7) are installed at the inlets of pumps No. 1 (31) and No. 2 (41).

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