CN220827264U - Multistage packing structure of ammonia nitrogen stripping tower - Google Patents

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a multistage packing structure of an ammonia nitrogen stripping tower, which comprises a drainage bottom box and an air heater, wherein the top of the drainage bottom box is provided with a tower body, three packing layers which are vertically equidistantly distributed are arranged in the tower body, a hollow water distribution plate is arranged in the tower body and close to the bottom of a demister, water distribution plates are arranged in the tower body and close to the middle packing layer and the top of the lowest packing layer, and hollow air inlet plates are arranged in the tower body and close to the bottom of the three packing layers. This multistage packing structure of ammonia nitrogen stripping tower, waste water enters into hollow water distribution dish from the inlet tube, exports the packing layer to the top after through hollow water distribution dish evenly distributed, and the water distribution board can export the packing layer to the below after redistributing waste water, effectively improves the utilization ratio of packing layer, all sets up hollow inlet disc in the below of three packing layers, can effectively improve the area of contact of air and water, improves the removal efficiency of ammonia nitrogen in the waste water.

Description

Multistage packing structure of ammonia nitrogen stripping tower

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a multistage packing structure of an ammonia nitrogen stripping tower.

Background

Ammonia nitrogen is nitrogen in water in the form of free ammonia and ammonium ions, and the sources of ammonia nitrogen in water are many, and besides domestic sewage and landfill leachate, the sources of ammonia nitrogen also come from the emission of industrial wastewater such as steel, oil refining, chemical fertilizer, tanning, petrochemical industry, glass manufacturing, feed production and the like. Ammonia nitrogen is a main factor causing eutrophication of water body, and can cause mass propagation of algae and microorganisms in the water body, so that dissolved oxygen in the water body is rapidly reduced, and the oxygen deficiency of fish and other aquatic organisms is caused, and the water quality is seriously influenced.

The utility model provides a high-efficient ammonia nitrogen stripping tower of publication number CN213060273U, belongs to waste water treatment, and the tank is installed to the lower extreme of tower body, and the blast pipe is installed to the upper end of tower body, and the outlet is installed near the lower extreme to the lateral wall of tank, and three cross mount of inner chamber middle section fixedly connected with of tower body, and three cross mount equidistant setting, the spray rack is all installed to the downside of every cross mount, and the packing layer is all installed to the downside of every spray rack, and the packing layer lower extreme is round platform type structure. The ammonia stripping device can realize three-time stripping of ammonia in wastewater in the tower body, so that the ammonia stripping device has the advantages that the ammonia stripping effect in wastewater is greatly improved, hot air is pumped in by utilizing the bottom of the tower body of the heat pump unit, the dissolution rate of ammonia nitrogen in water can be reduced, the ammonia nitrogen stripping efficiency is greatly improved, and heat in gas discharged from an ammonia nitrogen discharge port is recycled through the heat pump unit, so that the energy utilization efficiency is improved, and the energy conservation and the environment friendliness are realized.

In the specific use process of the prior art, although the removal effect of ammonia nitrogen in wastewater can be improved, the three spraying frames are arranged in the tower body in the prior art, and the three spraying frames are respectively arranged above the three packing layers, so that the wastewater sprayed by the lowest spraying frame can only pass through the lowest packing layer, ammonia nitrogen in the wastewater is difficult to fully contact with air, and therefore the ammonia nitrogen in part of the wastewater is difficult to effectively remove, and the ammonia nitrogen content in the wastewater discharged from the tower body is higher.

Disclosure of utility model

The utility model aims to provide a multistage packing structure of an ammonia nitrogen stripping tower, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The multistage packing structure of the ammonia nitrogen stripping tower comprises a drainage bottom box and an air heater, wherein the air heater is positioned on the right side of the drainage bottom box, a tower body is arranged at the top of the drainage bottom box, the tower body is communicated with the drainage bottom box, and wastewater after ammonia nitrogen is removed enters the drainage bottom box;

Three filler layers which are vertically and equidistantly arranged are arranged in the tower body, a demister is arranged in the tower body and close to the top of the tower body, a hollow water distribution disc is arranged in the tower body and close to the bottom of the demister, a water inlet pipe is arranged at the left end of the outer wall of the hollow water distribution disc, the left end of the water inlet pipe penetrates through the inner wall of the tower body to the outside, and wastewater enters the hollow water distribution disc from the water inlet pipe and is uniformly distributed through the hollow water distribution disc and then is output to the uppermost filler layer;

The water distribution plates are arranged in the tower body and close to the top of the middle packing layer and the top of the lowest packing layer, water seeping from the uppermost packing layer enters the water distribution plate above the middle packing layer, the water distribution plate redistributes the wastewater and outputs the wastewater to the middle packing layer, water seeping from the middle packing layer enters the water distribution plate above the lowest packing layer, and the water distribution plate redistributes the wastewater and outputs the wastewater to the lowest packing layer;

The utility model discloses a waste water treatment device, including tower body, waste water, air inlet pipe, air heater, air outlet pipe, air inlet pipe, air outlet pipe, exhaust pipe, waste water treatment device and exhaust pipe.

Preferably, the bottom of drain bottom box outer wall is equipped with the drain pipe, be equipped with the control valve on the drain pipe, convenient to use person controls the switch of drain pipe, discharges the waste water after the ammonia nitrogen is got rid of in the drain bottom box through the drain pipe.

Preferably, the packing layer comprises a first structured packing, a first random packing is arranged at the top of the first structured packing, a second structured packing is arranged at the top of the first random packing, and the second random packing is formed by randomly stacking irregularly-shaped small particles or flaky substances in a tower, such as Raschig rings, pall rings, ladder rings and the like; the structured packing refers to packing layers formed by arranging substances with certain shapes and structures in a tower according to certain rules, such as net corrugated packing, plate corrugated packing and the like, and the advantages of the two packing materials can be considered by alternately arranging the bulk packing layers and the structured packing layers, so that not only can enough gas-liquid contact area be provided, but also lower pressure drop and higher mass transfer efficiency can be maintained.

Preferably, the bottom of hollow cloth water tray is equipped with a plurality of first outlet pipes that are the matrix and arrange, can with waste water evenly distributed, makes the packing layer of top can be by make full use of, avoids producing more unused dead angle, the outer wall of hollow cloth water tray is equipped with four first dead levers of arranging with annular array, the outer end fixed connection of first dead lever is in the inner wall of tower body, makes the position fixing of hollow cloth water tray, and can not hinder the air current to upwards move.

Preferably, the outer wall fixed connection of water distribution board is in the inner wall of tower body, round platform shape recess has been seted up at the top of water distribution board, round water catch bowl has been seted up to the bottom of round platform shape recess inner wall, the bottom of water distribution board is equipped with a plurality of second outlet pipes that are the matrix and arrange, can collect the water that the packing layer oozes in round water catch bowl to follow the even output of a plurality of second outlet pipes, also in order to make full use of the packing layer, and the air that the hollow inlet disc that is located water distribution board below export can upwards flow from a plurality of second outlet pipes, can make air and waste water contact again, improves the effect of removing ammonia nitrogen in the waste water.

Preferably, a plurality of ventholes that are the matrix and arrange are offered at the top of hollow inlet disc, make the even branch output of air, be favorable to waste water and air fully contact in the packing layer, the outer wall of hollow inlet disc is equipped with four second dead levers of arranging with annular array, the outer end fixed connection of second dead lever makes the position fixing of hollow inlet disc in the inner wall of tower body.

Preferably, the middle part of hollow inlet disc bottom has seted up the infiltration hole, avoids waste water to enter into in the hollow inlet disc from the venthole after unable discharge, also can make the waste water that enters into in the hollow inlet disc like this with aerify the contact.

Compared with the prior art, the utility model has the beneficial effects that:

1. According to the multistage packing structure of the ammonia nitrogen stripping tower, wastewater enters the hollow water distribution plate from the water inlet pipe, is evenly distributed through the hollow water distribution plate and then is output to the uppermost packing layer, water seeping from the uppermost packing layer enters the water distribution plate above the middle packing layer, the wastewater is redistributed by the water distribution plate and then is output to the middle packing layer, water seeping from the middle packing layer enters the water distribution plate above the lowermost packing layer, and the wastewater is redistributed by the water distribution plate and then is output to the lowermost packing layer, so that the utilization rate of the packing layer can be effectively improved.

2. The hollow inlet disc is arranged below the three packing layers, so that the contact area between air and water can be effectively increased, waste water can be fully contacted with air in the three packing layers after being output from the hollow water distribution disc, the ammonia nitrogen removal efficiency in the waste water is improved, hot air generated by the air heater is input into the L-shaped air outlet pipe, and the hot air in the L-shaped air outlet pipe is respectively input into the three air inlet pipes through the three air outlet branch pipes, so that the three hollow inlet discs output upward hot air flows, and the hot air flows can further improve the ammonia nitrogen removal efficiency in the waste water.

3. The packing layers are alternately arranged with the bulk packing layers and the regular packing layers, so that the advantages of the two kinds of packing can be considered, the sufficient gas-liquid contact area can be provided, and the lower pressure drop and the higher mass transfer efficiency can be maintained.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of a drain bottom box and tower according to the present utility model;

FIG. 3 is a schematic view of the internal assembly structure of the tower of the present utility model;

FIG. 4 is a schematic cross-sectional view of a filler layer according to the present utility model;

FIG. 5 is a schematic diagram of the structure of the hollow water distribution disc in the utility model;

FIG. 6 is a schematic view of a first view structure of a water distribution plate according to the present utility model;

FIG. 7 is a schematic view of a second view angle structure of the water distribution plate according to the present utility model;

FIG. 8 is a schematic cross-sectional view of a water distribution plate according to the present utility model;

FIG. 9 is a schematic view of a first view of a hollow intake disc according to the present utility model;

Fig. 10 is a schematic view of a second view structure of the hollow intake disc of the present utility model.

In the figure: 1. a drain bottom box; 10. a drain pipe; 2. a tower body; 3. a filler layer; 30. a first structured packing; 31. a first bulk filler; 32. a second structured packing; 33. a second bulk filler; 4. a hollow water distribution plate; 40. a water inlet pipe; 41. a first water outlet pipe; 42. a first fixing rod; 5. a water distribution plate; 50. a truncated cone-shaped groove; 51. a circular water collection tank; 52. a second water outlet pipe; 6. a hollow intake plate; 60. an air inlet pipe; 61. an air outlet hole; 62. a second fixing rod; 63. water seepage holes; 7. an exhaust pipe; 8. an air heater; 9. an L-shaped air outlet pipe; 90. an air outlet branch pipe; 11. and a demister.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1 to 10, the present utility model provides a technical solution:

The utility model provides a multistage packing structure of ammonia nitrogen stripping tower, includes drainage underframe 1 and air heater 8, and air heater 8 is located the right side of drainage underframe 1, and the top of drainage underframe 1 is equipped with tower body 2, and tower body 2 and drainage underframe 1 intercommunication, waste water after ammonia nitrogen removal enters into drainage underframe 1;

Three filler layers 3 which are vertically and equidistantly arranged are arranged in the tower body 2, a demister 11 is arranged in the tower body 2 and close to the top, a hollow water distribution disc 4 is arranged in the tower body 2 and close to the bottom of the demister 11, a water inlet pipe 40 is arranged at the left end of the outer wall of the hollow water distribution disc 4, the left end of the water inlet pipe 40 penetrates through the inner wall of the tower body 2 to the outside, wastewater enters the hollow water distribution disc 4 from the water inlet pipe 40 and is uniformly distributed through the hollow water distribution disc 4 and then is output to the uppermost filler layer 3;

The water distribution plates 5 are arranged in the tower body 2 and close to the top of the middle packing layer 3 and the bottom packing layer 3, water seeping from the top packing layer 3 enters the water distribution plate 5 above the middle packing layer 3, the water distribution plate 5 redistributes wastewater and outputs the wastewater to the middle packing layer 3, water seeping from the middle packing layer 3 enters the water distribution plate 5 above the bottom packing layer 3, and the water distribution plate 5 redistributes wastewater and outputs the wastewater to the bottom packing layer 3;

The position in the tower body 2 and near the bottom of three packing layer 3 all is equipped with hollow inlet disc 6, the right-hand member of hollow inlet disc 6 outer wall is equipped with intake pipe 60, the right-hand member of intake pipe 60 runs through the inner wall of tower body 2 to external, the output of air heater 8 is connected with L shape tuber pipe 9, the outer wall of L shape tuber pipe 9 is equipped with three and is the air-out branch pipe 90 that the equidistance was arranged from top to bottom, the one end that three air-out branch pipe 90 kept away from L shape tuber pipe 9 communicates with the intake pipe 60 of three hollow inlet disc 6 respectively, the top of tower body 2 is equipped with blast pipe 7, all set up hollow inlet disc 6 in the below of three packing layer 3, can effectively improve the area of contact of air and water, can all fully contact with air in three packing layer 3 after making waste water export from hollow water distribution disc 4, the removal efficiency of ammonia nitrogen in the waste water, the hot air input L shape tuber pipe 9 that will produce, the hot air in the L shape tuber pipe 9 is through three air-out branch pipe 90 respectively enter into three intake pipe 60, thereby make three hollow disc 6 export upward improvement, can further take off the ammonia nitrogen in the waste gas, the waste gas can be directly out from the blast pipe 7, the external equipment of the waste gas can be avoided in the waste gas is discharged from the waste gas, directly from the exhaust pipe 7.

In this embodiment, the bottom of the outer wall of the drain bottom tank 1 is provided with a drain pipe 10, the drain pipe 10 is provided with a control valve, a user can control the switch of the drain pipe 10 conveniently, and the waste water in the drain bottom tank 1 after ammonia nitrogen is removed is discharged through the drain pipe 10.

Specifically, the packing layer 3 includes a first structured packing 30, a first random packing 31 is disposed at the top of the first structured packing 30, a second structured packing 32 is disposed at the top of the first random packing 31, and a second random packing 33 is disposed at the top of the second random packing 32, where the random packing refers to a packing layer formed by randomly stacking irregularly shaped small particles or sheet-shaped substances in a tower, such as raschig rings, pall rings, ladder rings, etc.; the structured packing refers to packing layers formed by arranging substances with certain shapes and structures in a tower according to certain rules, such as net corrugated packing, plate corrugated packing and the like, and the advantages of the two packing materials can be considered by alternately arranging the bulk packing layers and the structured packing layers, so that not only can enough gas-liquid contact area be provided, but also lower pressure drop and higher mass transfer efficiency can be maintained.

Further, the bottom of hollow water distribution dish 4 is equipped with a plurality of first outlet pipes 41 that are the matrix and arrange, can with waste water evenly distributed, makes the packing layer 3 of top can be by make full use of, avoids producing more unused dead angle, and the outer wall of hollow water distribution dish 4 is equipped with four first dead levers 42 of arranging with annular array, and the outer end fixed connection of first dead lever 42 makes the position fixing of hollow water distribution dish 4, and can not hinder the air current to upwards move in the inner wall of tower body 2.

Further, the outer wall fixed connection of water distribution board 5 is in the inner wall of tower body 2, round platform shape recess 50 has been seted up at the top of water distribution board 5, round water catch bowl 51 has been seted up to the bottom of round platform shape recess 50 inner wall, the bottom of water distribution board 5 is equipped with a plurality of second outlet pipes 52 that are the matrix arrangement, can collect the water that the packing layer 3 oozes in round water catch bowl 51, and the even output of a plurality of second outlet pipes 52, also in order to make full use of packing layer 3, and the air that the hollow inlet disk 6 that is located water distribution board 5 below export can upwards flow from a plurality of second outlet pipes 52, can make air and waste water contact again, improve the effect of removing ammonia nitrogen in the waste water.

Further, a plurality of air outlet holes 61 that are the matrix and arrange are offered at the top of hollow inlet disc 6, make the even branch output of air, be favorable to waste water and air fully contact in packing layer 3, the outer wall of hollow inlet disc 6 is equipped with four second dead levers 62 of arranging with annular array, the outer end fixed connection of second dead lever 62 makes the position fixing of hollow inlet disc 6 in the inner wall of tower body 2.

Further, the water seepage hole 63 is formed in the middle of the bottom of the hollow air inlet disc 6, so that waste water cannot be discharged after entering the hollow air inlet disc 6 from the air outlet hole 61, and the waste water entering the hollow air inlet disc 6 can be in contact with inflation.

In the multistage packing structure of the ammonia nitrogen stripping tower of the embodiment, when the multistage packing structure is used, hot air generated by the hot air blower 8 is input into the L-shaped air outlet pipe 9, hot air in the L-shaped air outlet pipe 9 enters into the three air inlet pipes 60 respectively through the three air outlet branch pipes 90, so that hot air can be output from the air outlet holes 61 of the hollow air inlet disk 6, when wastewater enters into the hollow water distribution disk 4 from the water inlet pipe 40, the hot air is output to the uppermost packing layer 3 from the plurality of first water outlet pipes 41 after being uniformly distributed through the hollow water distribution disk 4, the hot air is output upwards from the hollow air inlet disk 6 below the uppermost packing layer 3, the hot air is fully contacted with the wastewater in the uppermost packing layer 3, the wastewater is subjected to primary ammonia nitrogen removal treatment, the wastewater seeped from the uppermost packing layer 3 enters into the water distribution plate 5 above the middle packing layer 3, is output from the plurality of second water outlet pipes 52 to the middle packing layer 3 after being uniformly distributed through the water distribution plate 5, the hot air is output to the middle packing layer 3 in the hollow air inlet disk 6, the hot air is fully contacted with the wastewater in the middle packing layer 3, and the hot air is output from the lowest water inlet pipe 3 to the bottom plate 5 after being fully distributed through the water distribution plate 5, and the hot air is fully removed from the highest water inlet pipe 2 to the bottom layer 3 after the wastewater is completely discharged from the highest water inlet pipe 3 to the bottom layer, and the wastewater is fully contacted with the highest water inlet pipe 1.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a multistage packing structure of ammonia nitrogen stripping tower, includes drainage underframe (1) and air heater (8), air heater (8) are located the right-hand of drainage underframe (1), its characterized in that: the utility model discloses a water-saving type air conditioner, including tower body (2) and water drainage bottom box (1), tower body (2) and water drainage bottom box (1) intercommunication, be equipped with three packing layer (3) that are the equidistance and arrange from top to bottom in tower body (2), the position that just is close to the top in tower body (2) is equipped with defroster (11), the position that just is close to defroster (11) bottom in tower body (2) is equipped with hollow water distribution dish (4), the left end of hollow water distribution dish (4) outer wall is equipped with inlet tube (40), the inner wall to the external world of tower body (2) are passed to the left end of inlet tube (40), the position that just is close to middle part packing layer (3) and below packing layer (3) top in tower body (2) all is equipped with water distribution board (5), the position that just is close to three packing layer (3) bottom in the tower body (2) all is equipped with hollow inlet disc (6), the right-hand member of hollow inlet disc (6) outer wall is equipped with intake pipe (60), the right-hand member of intake pipe (60) runs through the inner wall (2) of tower body (4) outer wall to the outer wall, the outer wall of air-out pipe (9) are connected to the external air pipe (9) of taking shape of being out of the shape, the shape is connected with three outer air pipe (9) and is out of the shape of the top of the air pipe (9), one end of each air outlet branch pipe (90) far away from the L-shaped air outlet pipe (9) is respectively communicated with an air inlet pipe (60) of each hollow air inlet disc (6), and the top end of each tower body (2) is provided with an exhaust pipe (7).

2. The multistage packing structure of an ammonia nitrogen stripping column according to claim 1, characterized in that: the bottom of the outer wall of the drain bottom box (1) is provided with a drain pipe (10), and the drain pipe (10) is provided with a control valve.

3. The multistage packing structure of an ammonia nitrogen stripping column according to claim 1, characterized in that: the packing layer (3) comprises a first structured packing (30), a first random packing (31) is arranged at the top of the first structured packing (30), a second structured packing (32) is arranged at the top of the first random packing (31), and a second random packing (33) is arranged at the top of the second random packing (32).

4. The multistage packing structure of an ammonia nitrogen stripping column according to claim 1, characterized in that: the bottom of hollow water distribution dish (4) is equipped with a plurality of first outlet pipes (41) that are the matrix and arrange, the outer wall of hollow water distribution dish (4) is equipped with four first dead lever (42) of arranging with annular array, the outer end fixed connection of first dead lever (42) is in the inner wall of tower body (2).

5. The multistage packing structure of an ammonia nitrogen stripping column according to claim 1, characterized in that: the outer wall fixed connection of water distribution board (5) is in the inner wall of tower body (2), round platform shape recess (50) have been seted up at the top of water distribution board (5), circular water catch bowl (51) have been seted up to the bottom of round platform shape recess (50) inner wall, the bottom of water distribution board (5) is equipped with a plurality of second outlet pipes (52) that are the matrix and arrange.

6. The multistage packing structure of an ammonia nitrogen stripping column according to claim 1, characterized in that: the top of hollow inlet disc (6) has seted up a plurality of ventholes (61) that are the matrix and arrange, the outer wall of hollow inlet disc (6) is equipped with four second dead levers (62) of arranging with annular array, the outer end fixed connection of second dead lever (62) is in the inner wall of tower body (2).

7. The multistage packing structure of an ammonia nitrogen stripping column according to claim 1, characterized in that: and a water seepage hole (63) is formed in the middle of the bottom of the hollow air inlet disc (6).