Iron and manganese removal aeration tower

Abstract

The application discloses an iron and manganese removing aeration tower, and relates to the technical scheme that the tower body is internally formed with a containing cavity, the tower body is sequentially provided with an air outlet, a water inlet, a water distribution assembly, an aeration chamber, a air distribution plate, an air inlet and a water outlet from top to bottom, the water distribution assembly comprises a water distribution shell, the water distribution shell is internally provided with a water distribution cavity, the water distribution shell is provided with a water distribution pipeline, the water distribution cavity is internally provided with a sliding disc, the sliding disc is slidably connected with the water distribution pipeline and the side wall of the water distribution cavity, the sliding disc divides the water distribution cavity into an upper cavity and a lower cavity which are not in conduction, the lower end wall of the water distribution cavity is uniformly provided with a plurality of drainage channels, the lower surface of the sliding disc is provided with a plurality of supporting blocks in a protruding mode, the supporting blocks are provided in one-to-one correspondence with the drainage channels, and the water distribution shell is further provided with an air guide channel. The device can be used for aeration oxidation of water with high iron and manganese content, has small floor space, low operation cost and good oxidation effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aeration equipment, and more particularly to an iron and manganese removal aeration tower. BACKGROUND

[0002] Iron in groundwater usually exists in the state of Fe2+, when the groundwater with excessive iron is pumped up, the water quality is clear and clean, but has iron smell, and the water quality will become turbid after a period of time, because the Fe2+ in groundwater reacts with oxygen in the air to generate iron oxide. The surface water and groundwater in the area rich in iron and manganese, the iron content is usually 2-15mg / L, the content of high can reach 20-39mg / L, the manganese content is usually 0.5-2.0mg / L, and the content of high even exceeds 2.0mg / L. In order to reduce the content of iron and manganese in surface water and groundwater, so as to reach the standard of drinking water, the water needs to be aerated and oxidized. That is, the oxygen in the air reacts with the iron and manganese ions in the water to generate iron oxide and manganese oxide.

[0003] There are three main existing aeration oxidation methods: 1. The pool bottom gas distribution device plus three-blade Roots blower aeration oxidation. This aeration oxidation method needs to be equipped with a gas distribution disc or a gas distribution pipe at the bottom of the square pool, and a three-blade Roots blower is used for pressurized aeration, which occupies a large area and has high energy consumption. 2. Adding sodium hypochlorite or ozone and other oxidants to the water to oxidize the iron and manganese in the water. This method has high operating cost, and adding oxidants also increases the pollutants in the water. 3. Pipeline pressurized air aeration oxidation. This method adds a compressor to the pipeline to oxidize, which is only suitable for low-iron and manganese groundwater with iron content less than 1.0mg / L. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide an iron and manganese removal aeration tower, which can aerate and oxidize water with high iron and manganese content, has small area occupation, low operating cost, and good oxidation effect.

[0005] To achieve the above object, the present application provides the following technical scheme: An iron and manganese removing aeration tower, comprising a tower body with an accommodating cavity formed inside, the tower body is sequentially provided with an air outlet, a water inlet, a water distribution assembly, an aeration chamber, a air distribution plate, an air inlet and a water outlet from top to bottom, the aeration chamber is filled with a filler for increasing the contact area of air and water, the tower body is provided with a blowing device for blowing air into the air inlet, the water inlet is connected with a water supply device through a pipeline, the water distribution assembly comprises a water distribution shell fixedly connected with the side wall of the accommodating cavity, the water distribution shell is disc-shaped, a water distribution cavity is arranged in the water distribution shell, a water distribution pipeline is arranged on the water distribution shell, one end of the water distribution pipeline is connected with the water inlet, and the other end of the water distribution pipeline extends into the water distribution cavity vertically from the upper surface of the water distribution shell, a sliding disc is arranged in the water distribution cavity, the sliding disc is slidably connected with the water distribution pipeline and the side wall of the water distribution cavity, the sliding disc divides the water distribution cavity into an upper cavity and a lower cavity which are not in communication, the lower cavity is filled with water, an exhaust passage is formed in the upper end wall of the water distribution cavity to facilitate the exhaust of gas in the upper cavity, a plurality of drainage passages are uniformly arranged on the lower end wall of the water distribution cavity, a plurality of supporting blocks are protrudingly arranged on the lower surface of the sliding disc, the supporting blocks are arranged in one-to-one correspondence with the drainage passages, the sliding disc slides downward under the action of gravity to abut against the lower end wall of the water distribution cavity in the state that each supporting block blocks each drainage passage, the water to be treated continuously enters the lower cavity through the water distribution pipeline, the sliding disc slides upward, and each drainage passage is synchronously opened; a wind guide passage is further arranged in the water distribution shell, the wind guide passage communicates the upper and lower end faces of the water distribution shell, a water tank is arranged below the tower body, the inlet of the water tank is communicated with the water outlet, and the outlet of the water tank is connected with an iron and manganese removing filter through a pipeline.

[0006] As a further improvement of the present application, a diffusion member for diffusing water flow is arranged in each drainage passage, the diffusion member comprises a connecting column and a flow guide table connected to the lower end of the connecting column, the outer diameter of the connecting column is smaller than the inner diameter of the drainage passage, the upper end of the connecting column is connected to the supporting block, and the lower end of the connecting column extends out of the drainage passage, the flow guide table is disc-shaped, the upper end face of the flow guide table is smaller than the lower end face, and the upper end of the flow guide table is connected to the lower end of the connecting column.

[0007] As a further improvement of the present application, the lower end opening of the drainage passage is provided with a flared structure matched with the side wall of the flow guide table.

[0008] As a further improvement of the present application, the connecting column and the supporting block are detachably connected.

[0009] As a further improvement of the application, the upper end of the flow guide platform is rotatably connected with the lower end of the connecting column, and a plurality of spiral guide strips are fixed on the side surface of the flow guide platform, the spiral guide strips are evenly distributed in a ring shape along the central axis of the flow guide platform, and a guide channel is formed between adjacent two spiral guide strips.

[0010] As a further improvement of the application, a plurality of hemispherical protrusions are arranged on the side surface of the flow guide platform.

[0011] As a further improvement of the application, a plurality of air guide channels are arranged, and the air guide channels are evenly distributed in a ring shape along the central axis of the water distribution shell.

[0012] As a further improvement of the application, the filler is formed by stacking hollow spheres.

[0013] As a further improvement of the application, the air outlet is arranged upward, a dust cover is arranged above the air outlet, the projection of the dust cover on the horizontal plane covers the projection of the water outlet on the horizontal plane, and the air is discharged to the outside of the tower body through the gap between the air outlet and the dust cover.

[0014] As a further improvement of the application, the air blowing device is a centrifugal fan, and the centrifugal fan is installed on the outer wall of the tower body.

[0015] The device can aerate and oxidize water with high iron and manganese content, and has the advantages of smaller occupied area compared with the aeration mode of the aeration tank, no need to add oxidizing agent during the aeration process, small equipment operation noise, low aeration cost and low energy consumption, the water in the lower cavity is filled with water through the arrangement of the water distribution assembly, each drainage channel can always discharge the treated water synchronously, the treated water is uniformly distributed, the treated water can be uniformly distributed on the filler in the aeration chamber, the treated water can better contact with the air entering from the lower part, and the oxidation effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of an iron and manganese removal aeration tower;

[0017] Figure 2 It is a three-dimensional structural schematic view of a water distribution assembly;

[0018] Figure 3 It is a sectional view of the water distribution assembly;

[0019] Figure 4 It is a three-dimensional structural schematic view of a diffusion member.

[0020] Reference numerals: 1, tower body; 11, containing cavity; 2, air outlet; 21, dust cover; 3, water inlet; 4, water distribution assembly; 41, water distribution shell; 411, air guide channel; 42, water distribution cavity; 421, upper cavity; 422, lower cavity; 423, exhaust channel; 424, drainage channel; 43, water distribution pipeline; 44, sliding disc; 441, support block; 45, diffusion piece; 451, connecting column; 452, flow guide table; 4521, spiral guide strip; 4522, guide channel; 4523, semispherical bump; 5, aeration chamber; 6, air distribution plate; 7, air inlet; 71, air blowing equipment; 8, water outlet; 9, water tank. DETAILED DESCRIPTION

[0021] The application will be further described below in conjunction with the drawings and examples. Identical parts are denoted by identical reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.

[0022] Reference Figure 1 , Figure 2 , Figure 3As shown, the iron and manganese removal aeration tower of the embodiment comprises a tower body 1 with an accommodating cavity 11 formed inside, the tower body 1 is sequentially provided with an air outlet 2, a water inlet 3, a water distribution assembly 4, an aeration chamber 5, a distribution plate 6, an air inlet 7 and a water outlet 8 from top to bottom, the aeration chamber 5 is filled with fillers for increasing the air and water contact area, the tower body 1 is installed with a blowing device 71 for blowing air into the air inlet 7, the water inlet 3 is connected with a water supply device through a pipeline, the water distribution assembly 4 comprises a water distribution shell 41 fixedly connected with the side wall of the accommodating cavity 11, the water distribution shell 41 is disc-shaped, the water distribution shell 41 is provided with a water distribution cavity 42, the water distribution shell 41 is provided with a water distribution pipeline, one end of the water distribution pipeline is connected with the water inlet 3, and the other end vertically extends into the water distribution cavity 42 from the upper surface of the water distribution shell 41, the water distribution cavity 42 is provided with a sliding disc 44, the sliding disc 44 is slidingly connected with the water distribution pipeline and the side wall of the water distribution cavity 42, the sliding disc 44 divides the water distribution cavity 42 into an upper cavity 421 and a lower cavity 422 which are not in communication, the lower cavity 422 is filled with water, the upper end wall of the water distribution cavity 42 is provided with an exhaust passage 423 for facilitating the exhaust of gas in the upper cavity 421, the lower end wall of the water distribution cavity 42 is uniformly provided with a plurality of drainage passages 424, the lower surface of the sliding disc 44 is provided with a plurality of supporting blocks 441, the supporting blocks 441 are provided in one-to-one correspondence with the drainage passages 424, the sliding disc 44 slides downward to the state that the supporting blocks 441 abut against the lower end wall of the water distribution cavity 42 under the action of gravity, and each supporting block 441 blocks each drainage passage 424; when the water to be treated continuously enters the lower cavity 422 from the water distribution pipeline, the sliding disc 44 slides upward, and each drainage passage 424 is synchronously opened; the water distribution shell 41 is further provided with a wind guide passage 411 which communicates the upper and lower end faces of the water distribution shell 41, a water tank 9 is arranged below the tower body 1, the inlet of the water tank 9 is communicated with the water outlet 8, and the outlet of the water tank 9 is connected with an iron and manganese removal filter through a pipeline.

[0023] The water supply equipment can be a water pump, etc. The water supply equipment continuously sends the water to be treated into the inlet 3. The water to be treated enters the lower cavity 422 through the water distribution pipe. Due to the limited space in the lower cavity 422, the water pressure in the lower cavity 422 increases and drives the sliding plate 44 to slide to the side of the upper cavity 421. At this time, all the support blocks 441 move upward synchronously, so that all drainage channels 424 are open. The water to be treated will be discharged from all drainage channels 424 and enter the aeration chamber 5 at the same time. At the same time, the blower 71 blows air into the air inlet 7. The air enters the aeration chamber 5 through the air distribution plate 6 after passing through the air inlet 7. In the aeration chamber 5, the air comes into full contact with the water to be treated. The iron and manganese in the water to be treated are oxidized. Then the air is discharged from the air outlet 2 through the air guide channel 411 in the water distribution shell 41. The treated water flows into the water tank 9 through the water outlet 8 under the action of gravity. This device can oxidize water with high iron and manganese content through aeration. Compared with aeration tanks, it occupies less space. No oxidant needs to be added during aeration, the equipment operates with low noise, and the aeration cost is low and energy consumption is low. Through the water distribution component 4, the lower chamber 422 is filled with water, and each drainage channel 424 can always discharge the water to be treated synchronously. The water to be treated is evenly sprinkled, so that it can fall evenly onto the packing material in the aeration chamber 5. The water to be treated can better contact the air entering from below, resulting in a good oxidation effect.

[0024] As one specific implementation method of the improvement, refer to Figure 3 , Figure 4 As shown, each drainage channel 424 is equipped with a diffuser 45 for spreading water flow. The diffuser 45 includes a connecting column 451 and a guide platform 452 connected to the lower end of the connecting column 451. The outer diameter of the connecting column 451 is smaller than the inner diameter of the drainage channel 424. The upper end of the connecting column 451 is connected to the support block 441, and the lower end of the connecting column 451 extends downward out of the drainage channel 424. The guide platform 452 is frustum-shaped, and the upper surface area of ​​the guide platform 452 is smaller than the lower surface area. The upper end of the guide platform 452 is connected to the lower end of the connecting column 451.

[0025] After the water flows through the drainage channel 424, it diffuses to the surroundings under the guidance of the side of the guide platform 452. This causes the water discharged from each drainage channel 424 to not fall vertically, but to spread outwards. The greater the water pressure in the lower cavity 422, the more the sliding plate 44 moves to the side of the upper cavity 421. This brings the distance between the truncated cone and the lower end of the drainage channel 424 closer, and the faster the water flows out of the drainage channel 424. This results in a larger diffusion range of the water after passing through the truncated cone, which is conducive to the more even distribution of the water to be treated and improves the oxidation effect of the water to be treated.

[0026] As one specific implementation method of the improvement, refer to Figure 3As shown, the lower end of the drainage channel 424 is provided with a flared structure matching the side wall of the flow guide platform 452. The flared structure facilitates the outward diffusion of water flow.

[0027] As a specific embodiment of the improvement, reference is made to Figure 3 As shown, the connecting column 451 is detachably connected with the supporting block 441. The connecting column 451 and the connecting block are screw-connected, which facilitates the installation and replacement of the diffusion member 45.

[0028] As a specific embodiment of the improvement, reference is made to Figure 3 、 Figure 4 As shown, the upper end of the flow guide platform 452 is rotationally connected with the lower end of the connecting column 451, and a plurality of spiral guide strips 4521 are fixed on the side surface of the flow guide platform 452. The spiral guide strips 4521 are annularly and uniformly distributed along the central axis of the flow guide platform 452, and a guide channel 4522 is formed between adjacent two spiral guide strips 4521. When the water to be treated flows upwards and downwards, it will continuously impact the spiral guide strips 4521, and the spiral guide strips 4521 will drive the entire flow guide platform 452 to rotate under the impact force. The centrifugal force generated during the rotation of the flow guide platform 452 with the water to be treated facilitates the diffusion and atomization of the water to be treated, which is beneficial to the uniform distribution of the water to be treated and improves the oxidation effect of the water to be treated.

[0029] As a specific embodiment of the improvement, reference is made to Figure 4 As shown, a plurality of semispherical protrusions 4523 are arranged on the side surface of the flow guide platform 452. The arrangement of the semispherical protrusions makes the side surface of the flow guide platform 452 a concave-convex surface. When the water flow flows downwards from the flat part to the protrusion part, it is easy to splash, so the water to be treated is more likely to diffuse and atomize around, which is beneficial to the uniform distribution of the water to be treated and improves the oxidation effect of the water to be treated.

[0030] As a specific embodiment of the improvement, reference is made to Figure 2 、 Figure 3 As shown, a plurality of air guide channels 411 are arranged, and the air guide channels 411 are annularly and uniformly distributed along the central axis of the water distribution shell 41. The uniform distribution of the air guide channels 411 facilitates the uniform oxidation of the water to be treated.

[0031] As a specific embodiment of the improvement, the filler is formed by stacking hollow spheres. The stable gaps formed between adjacent hollow spheres can allow air and water flow to pass through, and the mass of the hollow spheres is small, and the cost is low.

[0032] As a specific embodiment of the improvement, reference is made to Figure 1As shown, the air outlet 2 is upwardly open, and a dust cover 21 is arranged above the air outlet 2, the projection of the dust cover 21 on the horizontal plane covers the projection of the water outlet 8 on the horizontal plane, and air is discharged from the gap between the air outlet 2 and the dust cover 21 to the outside of the tower body 1. The dust cover 21 can block dust from falling into the air outlet 2 to pollute the water without affecting the air discharge.

[0033] As a specific embodiment of the improvement, reference is made to Figure 1 As shown, the air blowing device 71 is a centrifugal fan, which is installed on the outer wall of the tower body 1. The model of the centrifugal fan can be SYDF-2.8A, and the centrifugal fan is used for air blowing and aeration, which has large air volume and low energy consumption.

[0034] Working principle:

[0035] The water supply device continuously sends the water to be treated into the water inlet 3, the water to be treated enters into the lower cavity 422 through the water distribution pipe, the sliding disc 44 slides to the side of the upper cavity 421 under the action of water pressure, at this time, all the supporting blocks 441 move upward synchronously, so that each drainage channel 424 is connected, the water to be treated flows from the lower cavity 422 to the aeration chamber 5 through the drainage channel 424, after the water flow passes through the drainage channel 424, it spreads around under the flow guiding effect of the side of the flow guiding table 452, so that the water discharged from each drainage channel 424 does not fall vertically, but spreads around, and the greater the water pressure in the lower cavity 422, the more the sliding disc 44 moves to the side of the upper cavity 421, the closer the distance between the circular table and the lower end of the drainage channel 424, the more rapid the water flow from the drainage channel 424, and the greater the diffusion range of the water flow after passing through the circular table; when the water to be treated flows downward, it will continuously impact the spiral guide strip 4521, the spiral guide strip 4521 drives the whole flow guiding table 452 to rotate under the impact force, and the water to be treated generates centrifugal force during the rotation of the flow guiding table 452, so that the water to be treated is more easily diffused and atomized around; the setting of the semicircular protrusions makes the side of the flow guiding table 452 a concave-convex surface, the water flow easily splashes when flowing down from the flat part to the protrusion, which further makes the water to be treated more easily diffused and atomized around, is beneficial to the uniform falling of the water to be treated, and improves the oxidation effect of the water to be treated. The water to be treated is atomized and then simultaneously discharged from each drainage channel 424 into the aeration chamber 5, at the same time, the air blowing device 71 blows air into the air inlet 7, the air enters into the aeration chamber 5 through the air distribution plate 6 after passing through the air inlet 7, in the aeration chamber 5, the air fully contacts with the water to be treated, the iron and manganese in the water to be treated are oxidized, then the air passes through the air guide channel 411 in the water distribution shell 41 and is discharged from the air outlet 2, and the treated water flows into the water tank 9 through the water outlet 8 under the action of gravity. The device can perform aeration oxidation on water with high iron and manganese content, compared with the aeration mode of the aeration tank, the device has a smaller area; no oxidant needs to be added during the aeration process, the device has low noise during operation, the aeration has low cost and low energy consumption; through the setting of the water distribution assembly 4, each drainage channel 424 can always synchronously discharge the water to be treated, the water to be treated is uniformly sprayed after atomization, so that the water to be treated can uniformly fall on the filler in the aeration chamber 5, the water to be treated can better contact with the air entering from below, and the oxidation effect is good.

[0036] The above is only the preferred embodiment of the present application, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application should also be considered as the protection scope of the present application.

Claims

1. An iron and manganese removal aeration tower, comprising a tower body (1) with an accommodating cavity (11) formed inside, the tower body (1) being sequentially provided with an air outlet (2), a water inlet (3), a water distribution assembly (4), an aeration chamber (5), a air distribution plate (6), an air inlet (7) and a water outlet (8) from top to bottom, the aeration chamber (5) being filled with a filler for increasing the air and water contact area, the tower body (1) being provided with a blowing device (71) for blowing air into the air inlet (7), and the water inlet (3) being externally connected with a water supply device through a pipeline, characterized in that: The water distribution assembly (4) comprises a water distribution shell (41) fixedly connected with the side wall of the accommodating cavity (11), the water distribution shell (41) is disc-shaped, a water distribution cavity (42) is arranged in the water distribution shell (41), a water distribution pipeline (43) is arranged on the water distribution shell (41), one end of the water distribution pipeline (43) is connected with the water inlet (3), and the other end vertically extends into the water distribution cavity (42) from the upper surface of the water distribution shell (41); a sliding disc (44) is arranged in the water distribution cavity (42), the sliding disc (44) is in sliding connection with the water distribution pipeline (43) and the side wall of the water distribution cavity (42), the sliding disc (44) divides the water distribution cavity (42) into an upper cavity (421) and a lower cavity (422) that are not in communication, the lower cavity (422) is filled with water, an exhaust passage (423) for facilitating the exhaust of gas in the upper cavity (421) is formed in the upper end wall of the water distribution cavity (42), a plurality of water drainage passages (424) are uniformly arranged on the lower end wall of the water distribution cavity (42), a plurality of support blocks (441) are protrudingly arranged on the lower surface of the sliding disc (44), the support blocks (441) are arranged in one-to-one correspondence with the water drainage passages (424), the sliding disc (44) slides downward to the state that the support blocks (441) abut against the lower end wall of the water distribution cavity (42) under the action of gravity, and each support block (441) blocks each water drainage passage (424); when the water to be treated continuously enters the lower cavity (422) from the water distribution pipeline (43), the sliding disc (44) slides upward, and each water drainage passage (424) is synchronously opened; a wind guide passage (411) is further arranged in the water distribution shell (41), the wind guide passage (411) communicates the upper and lower end faces of the water distribution shell (41), a water tank (9) is arranged below the tower body (1), the inlet of the water tank (9) is in communication with the water outlet (8), and the outlet of the water tank (9) is externally connected with an iron and manganese removal filter through a pipeline. The water drainage passage (424) is provided with a diffusion member (45) for diffusing water flow, the diffusion member (45) comprises a connecting column (451) and a flow guide table (452) connected to the lower end of the connecting column (451), the outer diameter of the connecting column (451) is smaller than the inner diameter of the water drainage passage (424), the upper end of the connecting column (451) is connected to the support block (441), and the lower end of the connecting column (451) extends out of the water drainage passage (424); the flow guide table (452) is disc-shaped, the upper end face area of the flow guide table (452) is smaller than the lower end face area, and the upper end of the flow guide table (452) is connected to the lower end of the connecting column (451). The wind guide passage (411) is provided with a plurality of wind guide passages (411), and the plurality of wind guide passages (411) are uniformly distributed in a ring shape along the central axis of the water distribution shell (41).

2. The iron and manganese removal aeration tower according to claim 1, characterized in that: The lower end opening of the water drainage passage (424) is provided with an expanding structure matched with the side wall of the flow guide table (452).

3. The iron and manganese removal aeration column according to claim 1, characterized in that: The connecting column (451) and the support block (441) are detachably connected.

4. The iron and manganese removal aeration column according to claim 1, characterized in that: The upper end of the flow guide platform (452) is rotationally connected with the lower end of the connecting column (451), and a plurality of spiral guide strips (4521) are fixed on the side surface of the flow guide platform (452), the spiral guide strips (4521) are uniformly distributed in a ring shape along the central axis of the flow guide platform (452), a guide channel (4522) is formed between adjacent two spiral guide strips (4521), and the water to be treated flows upwards and downwards and continuously impacts the spiral guide strips (4521) and drives the flow guide platform (452) to rotate.

5. The iron and manganese removal aeration column according to claim 1, characterized in that: A plurality of semispherical protrusions (4523) are arranged on the side surface of the flow guide platform (452).

6. The iron and manganese removal aeration column according to claim 1, characterized in that: The filler is formed by stacking hollow balls.

7. The iron and manganese removal aeration column according to claim 1, characterized in that: The air outlet (2) is upwardly arranged, a dust cover (21) is arranged above the air outlet (2), the projection of the dust cover (21) on the horizontal plane covers the projection of the water outlet (8) on the horizontal plane, and the air is discharged to the outside of the tower body (1) through the gap between the air outlet (2) and the dust cover (21).

8. The iron and manganese removal aeration column according to claim 1, characterized in that: The air blowing device (71) is a centrifugal fan, and the centrifugal fan is installed on the outer wall of the tower body (1).

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