CN220078751U - Wastewater multistage treatment device for desulfurization and denitrification - Google Patents

Abstract

The utility model relates to the technical field of wastewater treatment and discloses a wastewater multistage treatment device for desulfurization and denitrification, which comprises a first box body and a second box body, wherein a neutralization storage box is fixedly connected to the upper part of one side of the first box body, a first discharging pipe is fixedly connected to one side of the neutralization storage box, one end of the first discharging pipe penetrates through the first box body to the inside, a liquid level sensor is fixedly arranged in the middle part of one side of the first box body, which is close to the neutralization storage box, a first stirring shaft is rotatably connected to the lower part between the inner walls of two sides of the first box body, and a water pump is fixedly arranged at the lower part of one side of the first box body, which is far away from the liquid level sensor. According to the utility model, under the multistage treatment of the wastewater by the first box body and the second box body, the harmful substances can be effectively subjected to precipitation treatment on the wastewater for desulfurization and denitrification, and the precipitate can be automatically salvaged, so that the wastewater can be conveniently cleaned.

Description

Wastewater multistage treatment device for desulfurization and denitrification

Technical Field

The utility model relates to the technical field of wastewater treatment, in particular to a wastewater multistage treatment device for desulfurization and denitrification.

Background

Desulfurization and denitrification are one of the important technical measures for preventing and treating atmospheric pollution, a large amount of clean water is needed to be used in desulfurization and denitrification, and the clean water becomes sewage and wastewater to reflow again after the flue gas and the like are washed, so that the wastewater can be discharged after being treated.

The existing treatment device is not provided with an automatic stirring and mixing mechanism generally, and further when relevant treatment additives are put into, rapid mixing reaction cannot be carried out between the treatment device and wastewater, so that the treatment efficiency is lower, meanwhile, sediment generated during the reaction of the relevant treatment additives and the wastewater cannot be automatically fished up, and thus, the operation personnel cannot conveniently carry out relevant collection treatment, and the use is inconvenient.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a wastewater multistage treatment device for desulfurization and denitrification, which is used for rapidly mixing wastewater and related treatment additives under the multistage treatment of the wastewater by a first box body and a second box body, effectively carrying out harmful substance precipitation treatment on the wastewater for desulfurization and denitrification, automatically salvaging precipitates, and further carrying out cleaning treatment on the wastewater, thereby effectively avoiding the damage to the ecological environment when the wastewater is discharged.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a desulfurization and denitrification is with waste water multistage processing apparatus, includes first box and second box, one side of first box is by upper portion fixedly connected with neutralization storage box, one side of neutralization storage box is fixedly connected with first discharging pipe, one end of first discharging pipe runs through first box to inside, first box is close to neutralization storage box's one side middle part fixedly provided with liquid level sensor, the lower part rotation is connected with first (mixing) shaft between the both sides inner wall of first box, one side that first box kept away from liquid level sensor is fixedly provided with the water pump lower part, fixedly connected with water sucking pipe between water pump and the first box;

the water pump is fixedly connected with a drain pipe between the water pump and the second box body, a fixed cover plate is movably arranged at the upper part of the inside of the second box body, a second stirring shaft is rotatably connected at the center of the lower end of the fixed cover plate, a second connecting rod is fixedly connected at the front and rear parts of the lower end of the fixed cover plate, the lower ends of the two second connecting rods are fixedly connected with a filtering frame, a first sedimentation storage box and a second sedimentation storage box are respectively and fixedly connected at two sides of the upper end of the fixed cover plate, a second discharging pipe and a third discharging pipe are respectively and fixedly connected at the lower ends of the first sedimentation storage box and the second sedimentation storage box, the second discharging pipe and the third discharging pipe penetrate through the fixed cover plate to the inside of the second box body, and flow control valves are respectively and fixedly arranged on the outer walls of the first discharging pipe, the second discharging pipe and the third discharging pipe;

through above-mentioned technical scheme, through opening the flow control valve on the first discharging pipe, make the lime cream solution that neutralizes in the storage box throw into first box, rotate through first (mixing) shaft, and then make first (mixing) shaft can carry out intensive mixing to waste water and lime cream solution in the first box, make most heavy metal ion generate indissolvable hydroxide sediment in alkaline environment, through starting the water pump, waste water in the first box is carried to the second box through water suction pipe and drain pipe and cooperation filter screen cover, through opening the flow control valve on the second discharging pipe earlier, throw into the second box with the organic sulfide in the first sediment storage box, can carry out intensive mixing to waste water and organic sulfide in the second box through the rotation of second (mixing) shaft, open on the third discharging pipe again after a period, throw into the coagulant in the second sediment storage box into the second box, make the harmful substance in the waste water in the second box form the sediment.

Further, the two sides of the upper end of the first box body are fixedly provided with placing grooves, a filter plate is arranged between the two placing grooves, fixing holes are fixedly formed in the positions, close to four corners, of the upper end of the filter plate, fixing grooves are fixedly formed in the positions, close to the front and the rear, of the inner walls of the lower ends of the two placing grooves, a plurality of fixing holes and the fixing grooves are correspondingly arranged, fixing blocks are arranged in the fixing grooves in a clamping mode, the fixing blocks are arranged in the corresponding fixing holes in a clamping mode, the upper ends of the fixing blocks are fixedly connected with clamping covers, a water inlet pipe is arranged at the center of the upper end of each clamping cover, a water pipe is fixedly connected with a water conveying pipe through a flange, an electromagnetic valve is arranged on the outer wall of each water conveying pipe, and the liquid level sensor is electrically connected with the electromagnetic valve;

through above-mentioned technical scheme, through being equipped with filter and card lid on first box, and be equipped with inlet tube and raceway on the card lid, and then when using the device, can be by carrying waste water to first box through inlet tube and raceway, and can carry out preliminary filtration through the filter in input process preferentially, through being equipped with the solenoid valve on the raceway, and with level sensor and solenoid valve electric connection, and then can control the closed raceway of solenoid valve when waste water in the first box reaches certain water level, so that carry out the component and to handling, inlet tube and raceway pass through flange joint simultaneously, and then can separate and dismantle, so that take off the card lid from first box, thereby can clear up filter and first box inside.

Further, lifting grooves and positioning grooves are respectively and fixedly formed in the middle of the front end and the rear end of the second box body, lifting screw rods are rotatably connected between the upper inner wall and the lower inner wall of the lifting grooves, positioning rods are fixedly connected between the upper inner wall and the lower inner wall of the positioning grooves, lifting sliding blocks are sleeved on the outer wall threads of the lifting screw rods, positioning sliding blocks are sleeved on the outer wall of the positioning rods in a sliding manner, first connecting rods are fixedly connected to the upper ends of the lifting sliding blocks and the upper ends of the positioning sliding blocks, connecting blocks are fixedly connected to the upper ends of the two first connecting rods, and the two connecting blocks are fixedly connected with a fixed cover plate;

through above-mentioned technical scheme, rotate through the lift lead screw, and then can drive the lift slider and go up and down to remove, further drive corresponding head rod through lift slider and location slider and remove to drive fixed apron through head rod and connecting block and go up and down to remove.

Further, a third motor is fixedly arranged at the position, close to the lower part, of the front end of the second box body, a transmission groove is fixedly formed at the position, close to the lower part, of the front end of the second box body, the inner wall of the front end of the transmission groove is rotationally connected with a transmission shaft, the output end of the third motor penetrates through the second box body and is fixedly connected with the transmission shaft, a transmission bevel gear is fixedly sleeved on the outer wall of the transmission shaft, a driven shaft is rotationally connected between the upper inner wall and the lower inner wall of the transmission groove, a driven bevel gear is fixedly sleeved on the outer wall of the driven shaft, the driven bevel gear is meshed with the transmission bevel gear, and the upper end of the driven shaft penetrates through the second box body and is fixedly connected with a lifting screw rod;

through above-mentioned technical scheme, can drive the transmission shaft through starting the third motor and rotate, and then drive transmission bevel gear and rotate, because transmission bevel gear and driven bevel gear meshing to make driven bevel gear rotate, further drive the driven shaft and rotate, make the lift lead screw rotate through the driven shaft.

Further, a filter screen cover is fixedly connected to one side, far away from the liquid level sensor, of the inner wall of the lower end of the first box body, and one end of the water suction pipe penetrates through the first box body and is arranged in the filter screen cover;

through above-mentioned technical scheme, through being equipped with the screen panel to with the one end setting of water suction pipe in the screen panel, can prevent that first box from can not blockking up the water suction pipe when handling waste water the precipitate that produces, and then also can not carry in the second box.

Further, a second motor is fixedly arranged at the center of the upper end of the fixed cover plate, and the output end of the second motor penetrates through the fixed cover plate and is fixedly connected with a second stirring shaft;

through above-mentioned technical scheme, can drive the rotation of second (mixing) shaft through starting the second motor, and then make the second (mixing) shaft can carry out intensive mixing to waste water and additive in the second box.

Further, a first motor is fixedly arranged at the lower part of one side of the first box body, which is close to the liquid level sensor, and the output end of the first motor penetrates through the first box body and is fixedly connected with the first stirring shaft;

through above-mentioned technical scheme, can drive first (mixing) shaft through starting first motor and rotate, and then make first (mixing) shaft can carry out intensive mixing to waste water and additive in the first box.

Further, a filter screen is arranged at the lower part of the inner wall of one side of the second box body far away from the first box body, a water outlet pipe is fixedly connected to the position, close to the filter screen, of one side of the second box body far away from the first box body, and a valve is fixedly arranged on the outer wall of the water outlet pipe;

through above-mentioned technical scheme, through being equipped with the filter screen, can prevent that the precipitate in the second box from entering into the outlet pipe in, through being equipped with the valve on the outlet pipe to the closure of outlet pipe is controlled through the switch valve.

The utility model has the following beneficial effects:

1. according to the wastewater multistage treatment device for desulfurization and denitrification, disclosed by the utility model, the flow control valve on the first discharging pipe is opened, so that lime milk solution in the neutralization storage box is put into the first box body, the first stirring shaft can be driven to rotate by starting the first motor, so that the first stirring shaft can fully mix wastewater and lime milk solution in the first box body, most heavy metal ions generate indissolvable hydroxide precipitation in an alkaline environment, and meanwhile, the water inlet pipe and the water delivery pipe are connected through the flange, and further separation and disassembly can be performed, so that the clamping cover can be conveniently taken down from the first box body, and the filter plate and the interior of the first box body can be cleaned.

2. According to the wastewater multistage treatment device for desulfurization and denitrification, disclosed by the utility model, the wastewater in the first box body is conveyed into the second box body through the water suction pipe and the water discharge pipe in cooperation with the filter screen cover, at the moment, the flow control valve on the second discharge pipe is firstly opened, the organic sulfide in the first precipitation storage box is put into the second box body, meanwhile, the second motor is started to drive the second stirring shaft to rotate, so that the second stirring shaft can fully mix the wastewater in the second box body with the organic sulfide, the third discharge pipe is opened after a period of time, the coagulant in the second precipitation storage box is put into the second box body, so that harmful substances in the wastewater in the second box body form precipitation, and the wastewater for desulfurization and denitrification can be effectively subjected to cleaning treatment under the multistage treatment of the wastewater through the first box body and the second box body, and the ecological environment can be effectively prevented from being damaged when the wastewater is discharged.

3. According to the wastewater multistage treatment device for desulfurization and denitrification, the transmission shaft can be driven to rotate by starting the third motor, so that the transmission bevel gear is driven to rotate, the driven bevel gear is meshed with the driven bevel gear, the driven shaft is further driven to rotate, the lifting screw rod is driven to rotate through the driven shaft, the lifting slide block can be driven to lift through the rotation of the lifting screw rod, the corresponding first connecting rod is further driven to move through the lifting slide block and the positioning slide block, the fixed cover plate is driven to lift through the first connecting rod and the connecting block, the filter frame is finally lifted through the fixed cover plate and the second connecting rod, and sediment in the second box body is fished to be convenient to collect.

Drawings

FIG. 1 is a schematic front sectional view of a multi-stage treatment device for desulfurization and denitrification wastewater;

FIG. 2 is an enlarged schematic view of the structure shown at A in FIG. 1;

FIG. 3 is a schematic diagram showing a first tank of the desulfurization and denitrification wastewater multistage treatment device according to the present utility model;

FIG. 4 is a schematic side sectional view of a second tank of the wastewater multistage treatment device for desulfurization and denitrification provided by the utility model;

fig. 5 is a schematic diagram of a partial axial side of a multi-stage treatment device for desulfurization and denitrification wastewater.

Legend description:

1. a first case; 2. a placement groove; 3. a filter plate; 4. a fixing hole; 5. a fixing groove; 6. a fixed block; 7. a clamping cover; 8. a water inlet pipe; 9. a flange; 10. a water pipe; 11. an electromagnetic valve; 12. neutralizing the storage box; 13. a first discharge pipe; 14. a flow control valve; 15. a liquid level sensor; 16. a first motor; 17. a first stirring shaft; 18. a screen cover; 19. a water pump; 20. a water suction pipe; 21. a second case; 22. a drain pipe; 23. a lifting groove; 24. a positioning groove; 25. lifting the screw rod; 26. a positioning rod; 27. a lifting slide block; 28. positioning a sliding block; 29. a first connecting rod; 30. a connecting block; 31. fixing the cover plate; 32. a second stirring shaft; 33. a second connecting rod; 34. a filter frame; 35. a second motor; 36. a third motor; 37. a transmission groove; 38. a transmission shaft; 39. a drive bevel gear; 40. a driven shaft; 41. a driven bevel gear; 42. a first sedimentation magazine; 43. a second sedimentation storage box; 44. a second discharge pipe; 45. a third discharge pipe; 46. a filter screen; 47. a water outlet pipe; 48. and (3) a valve.

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.

Referring to fig. 1-5, one embodiment provided by the present utility model is: the utility model provides a desulfurization and denitrification is with waste water multistage processing apparatus, including first box 1 and second box 21, one side of first box 1 is by the department fixedly connected with neutralization storage box 12, one side of neutralization storage box 12 is fixedly connected with first discharging pipe 13, one end of first discharging pipe 13 runs through first box 1 to inside, first box 1 is close to the side middle part of neutralization storage box 12 fixedly to be provided with liquid level sensor 15, be connected with first (mixing) shaft 17 by the department rotation down between the both sides inner wall of first box 1, one side of first box 1 keeps away from liquid level sensor 15 is fixedly provided with water pump 19 by the department down, fixedly connected with water absorption pipe 20 between water pump 19 and the first box 1;

the water pump 19 is fixedly connected with the drain pipe 22 between the second box 21, the inside of second box 21 is provided with fixed apron 31 by the department activity of upper portion, fixed apron 31's lower extreme center department rotates and is connected with second (mixing) shaft 32, fixed apron 31's lower extreme is all fixedly connected with second connecting rod 33 by the front and back department, the lower extreme fixedly connected with filter frame 34 of two second connecting rods 33, fixed apron 31's upper end both sides are first sediment storage box 42 and second sediment storage box 43 respectively, first sediment storage box 42 and second sediment storage box 43's lower extreme is second discharging pipe 44 and third discharging pipe 45 respectively fixedly connected with, second discharging pipe 44 and third discharging pipe 45 all run through fixed apron 31 to the inside of second box 21, first discharging pipe 13, second discharging pipe 44 and third discharging pipe 45's outer wall all fixedly are provided with flow control valve 14.

The two sides of the upper end of the first box body 1 are fixedly provided with the placing grooves 2, the filter plates 3 are arranged between the two placing grooves 2, the upper ends of the filter plates 3 are fixedly provided with the fixing holes 4 near four corners, the lower end inner walls of the two placing grooves 2 are fixedly provided with the fixing grooves 5 near the front and back, the fixing holes 4 and the fixing grooves 5 are correspondingly arranged, the inside of the fixing grooves 5 is clamped with the fixing blocks 6, the fixing blocks 6 are correspondingly clamped in the fixing holes 4, the upper ends of the fixing blocks 6 are fixedly connected with the clamping covers 7, the center of the upper ends of the clamping covers 7 is provided with the water inlet pipes 8, the water inlet pipes 8 are fixedly connected with the water delivery pipes 10 through the flanges 9, the outer walls of the water delivery pipes 10 are provided with the electromagnetic valves 11, the liquid level sensors 15 are electrically connected with the electromagnetic valves 11, the water inlet pipes 8 and the water delivery pipes 10 are arranged on the clamping covers 7 through the filter plates 3 and the clamping covers 7 arranged on the first box body 1, when the device is used, waste water can be conveyed into the first box body 1 through the water inlet pipe 8 and the water conveying pipe 10, and preliminary filtration can be carried out through the filter plate 3 preferentially in the input process, the electromagnetic valve 11 is arranged on the water conveying pipe 10, the liquid level sensor 15 is electrically connected with the electromagnetic valve 11, when the waste water in the first box body 1 reaches a certain water level, the electromagnetic valve 11 can be controlled to close the water conveying pipe 10 so as to carry out component aiming treatment, meanwhile, the water inlet pipe 8 and the water conveying pipe 10 are connected through the flange 9, separation and disassembly can be carried out so as to remove the clamping cover 7 from the first box body 1, the filter plate 3 and the inside of the first box body 1 can be cleaned, the lifting groove 23 and the positioning groove 24 are respectively fixedly arranged in the middle parts of the front end and the rear end of the second box body 21, the lifting screw rod 25 is rotatably connected between the upper inner wall and the lower inner wall of the lifting groove 23, a positioning rod 26 is fixedly connected between the upper inner wall and the lower inner wall of the positioning groove 24, a lifting slide block 27 is sleeved on the outer wall of the lifting screw rod 25 in a threaded manner, a positioning slide block 28 is sleeved on the outer wall of the positioning rod 26 in a sliding manner, first connecting rods 29 are fixedly connected to the upper ends of the lifting slide block 27 and the positioning slide block 28, connecting rods 30 are fixedly connected to the upper ends of the two first connecting rods 29, the two connecting rods 30 are fixedly connected with a fixed cover plate 31, the lifting screw rod 25 rotates to drive the lifting slide block 27 to lift and move, the corresponding first connecting rods 29 are further driven to move through the lifting slide block 27 and the positioning slide block 28, the fixed cover plate 31 is driven to lift and move through the first connecting rods 29 and the connecting rods 30, a third motor 36 is fixedly arranged at the position near the lower part of the front end of the second box 21, a transmission groove 37 is fixedly arranged at the position near the lower part inside the front end of the second box 21, the front end inner wall of the transmission groove 37 is rotationally connected with a transmission shaft 38, the output end of the third motor 36 penetrates through the second box body 21 and is fixedly connected with the transmission shaft 38, the outer wall of the transmission shaft 38 is fixedly sleeved with a transmission bevel gear 39, a driven shaft 40 is rotationally connected between the upper inner wall and the lower inner wall of the transmission groove 37, the outer wall of the driven shaft 40 is fixedly sleeved with a driven bevel gear 41, the driven bevel gear 41 is meshed with the transmission bevel gear 39, the upper end of the driven shaft 40 penetrates through the second box body 21 and is fixedly connected with the lifting screw rod 25, the transmission shaft 38 can be driven to rotate by starting the third motor 36, the transmission bevel gear 39 is driven to rotate, the driven bevel gear 41 is meshed with the driven bevel gear 39, the driven bevel gear 41 is further driven to rotate, the lifting screw rod 25 is driven to rotate by the driven shaft 40, one side, far away from the liquid level sensor 15, of the lower end inner wall of the first box body 1 is fixedly connected with a filter screen cover 18, one end of the water suction pipe 20 penetrates through the first box body 1 and is arranged in the filter screen cover 18, the filter screen cover 18 is arranged, one end of the water suction pipe 20 is arranged in the filter screen cover 18, sediment generated when the first box body 1 is used for treating wastewater can be prevented from blocking the water suction pipe 20 and further cannot be conveyed into the second box body 21, a second motor 35 is fixedly arranged at the center of the upper end of the fixed cover plate 31, the output end of the second motor 35 penetrates through the fixed cover plate 31 and is fixedly connected with the second stirring shaft 32, the second stirring shaft 32 can be driven to rotate by starting the second motor 35, further, the second stirring shaft 32 can be used for fully mixing wastewater and additives in the second box body 21, the first motor 16 is fixedly arranged at the position, which is close to one side of the liquid level sensor 15, of the first box body 1, the output of first motor 16 runs through first box 1 and with first (mixing) shaft 17 fixed connection, can drive first (mixing) shaft 17 rotation through starting first motor 16, and then make first (mixing) shaft 17 can carry out intensive mixing to waste water and additive in the first box 1, second box 21 is kept away from one side inner wall of first box 1 and is provided with filter screen 46 near lower department, one side that second box 21 kept away from first box 1 is close to filter screen 46 department fixedly connected with outlet pipe 47, the outer wall of outlet pipe 47 is fixedly provided with valve 48, through being equipped with filter screen 46, can prevent that the precipitate in the second box 21 from entering into outlet pipe 47 in, through being equipped with valve 48 on outlet pipe 47, so that the closure of outlet pipe 47 is controlled via switch valve 48.

Working principle: when the device is used, waste water can be conveyed into the first box body 1 through the water inlet pipe 8 and the water conveying pipe 10, preliminary filtration can be carried out through the filter plate 3 preferentially in the input process, the electromagnetic valve 11 is arranged on the water conveying pipe 10, the liquid level sensor 15 is electrically connected with the electromagnetic valve 11, further, when the waste water in the first box body 1 reaches a certain water level, the electromagnetic valve 11 can be controlled to close the water conveying pipe 10 so as to carry out component aiming treatment, for the waste water in the first box body 1, the lime milk solution in the neutralization storage box 12 is put into the first box body 1 by opening the flow control valve 14 on the first discharge pipe 13, the first stirring shaft 17 can be driven to rotate by starting the first motor 16 at the moment, and the first stirring shaft 17 can be used for fully mixing the waste water in the first box body 1 with the lime milk solution, the method has the advantages that most heavy metal ions generate indissolvable hydroxide precipitates in alkaline environment, meanwhile, the water inlet pipe 8 and the water delivery pipe 10 are connected through the flange 9, and then separation and disassembly can be carried out, so that the clamping cover 7 can be conveniently removed from the first box body 1, the filter plate 3 and the inside of the first box body 1 can be cleaned, the water pump 19 is started after a certain period of time, the waste water in the first box body 1 is conveyed into the second box body 21 through the water suction pipe 20 and the water discharge pipe 22 and the filter screen cover 18, at the moment, the flow control valve 14 on the second discharge pipe 44 is firstly opened, the organic sulfide in the first precipitation storage box 42 is put into the second box body 21, the second motor 35 is started to drive the second stirring shaft 32 to rotate, the second stirring shaft 32 can fully mix the waste water and the organic sulfide in the second box body 21, the third discharge pipe 45 is opened after a certain period of time, the coagulant in the second precipitation storage box 43 is put into the second box body 21, harmful substances in the wastewater in the second box body 21 form precipitates, the transmission shaft 38 can be driven to rotate by starting the third motor 36, the transmission bevel gear 39 is driven to rotate, the driven bevel gear 41 is meshed with the driven bevel gear 41, the driven shaft 40 is further driven to rotate, the lifting screw rod 25 is driven to rotate through the driven shaft 40, the lifting screw rod 25 is driven to rotate, the lifting slide block 27 can be driven to lift through the rotation of the lifting screw rod 25, the corresponding first connecting rod 29 is driven to move through the lifting slide block 27 and the positioning slide block 28, the fixed cover plate 31 is driven to lift through the first connecting rod 29 and the connecting block 30, the filtering frame 34 is lifted through the fixed cover plate 31 and the second connecting rod 33 finally, the precipitates in the second box body 21 are fished to be convenient for collecting, and finally the water liquid treated in the second box body 21 can be discharged through the water outlet pipe 47 by opening the valve 48.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. The utility model provides a desulfurization and denitrification is with waste water multistage processing apparatus, includes first box (1) and second box (21), its characterized in that: a neutralization storage box (12) is fixedly connected to one side of the first box body (1) close to the upper part, a first discharging pipe (13) is fixedly connected to one side of the neutralization storage box (12), one end of the first discharging pipe (13) penetrates through the first box body (1) to the inside, a liquid level sensor (15) is fixedly arranged in the middle of one side of the first box body (1) close to the neutralization storage box (12), a first stirring shaft (17) is rotatably connected to the lower part between the inner walls of two sides of the first box body (1), a water pump (19) is fixedly arranged at the lower part of one side of the first box body (1) far away from the liquid level sensor (15), and a water suction pipe (20) is fixedly connected between the water pump (19) and the first box body (1);

fixedly connected with drain pipe (22) between water pump (19) and second box (21), the inside of second box (21) is leaned on the department activity and is provided with fixed apron (31), the lower extreme center department rotation of fixed apron (31) is connected with second (mixing) shaft (32), the lower extreme of fixed apron (31) is leaned on the equal fixedly connected with second connecting rod (33) of department around, two the lower extreme fixedly connected with filter frame (34) of second connecting rod (33), the upper end both sides of fixed apron (31) are fixedly connected with first sediment storage box (42) and second sediment storage box (43) respectively, the lower extreme of first sediment storage box (42) and second sediment storage box (43) is fixedly connected with second discharging pipe (44) and third discharging pipe (45) respectively, second discharging pipe (44) and third discharging pipe (45) all run through fixed apron (31) to inside second box (21), first discharging pipe (13), second discharging pipe (44) and third discharging pipe (45) are provided with discharging valve (14) fixed flow control.

2. The multistage desulfurization and denitrification wastewater treatment device according to claim 1, wherein: the utility model discloses a liquid level sensor, including first box (1), fixed slot (2) have all been fixedly seted up to upper end both sides of first box (1), two be provided with filter (3) between standing groove (2), the upper end of filter (3) is close to four corners department and all is fixedly seted up fixed slot (5) have all been fixed to lower extreme inner wall of standing groove (2) by front and back department, a plurality of fixed slot (4) and fixed slot (5) correspond the setting, a plurality of equal block in inside of fixed slot (5) is provided with fixed block (6), a plurality of fixed block (6) all correspond the block setting in fixed slot (4), a plurality of the upper end fixedly connected with clamping lid (7) of fixed block (6), the upper end center department of clamping lid (7) is provided with inlet tube (8), inlet tube (8) are through flange (9) fixedly connected with raceway (10), the outer wall of raceway (10) is provided with solenoid valve (11), liquid level sensor (15) and solenoid valve (11) electric connection.

3. The multistage desulfurization and denitrification wastewater treatment device according to claim 1, wherein: lifting groove (23) and constant head tank (24) have been seted up to the front and back end middle part of second box (21) respectively fixedly, rotate between the upper and lower inner wall of lifting groove (23) and be connected with lift lead screw (25), fixedly connected with locating lever (26) between the upper and lower inner wall of constant head tank (24), lifting slide block (27) have been cup jointed to the outer wall screw thread of lift lead screw (25), locating slide block (28) have been cup jointed in the outer wall sliding of locating lever (26), the equal fixedly connected with head rod (29) of the upper end of lifting slide block (27) and locating slide block (28), two equal fixedly connected with connecting block (30) of the upper end of head rod (29), two connecting block (30) all with fixed cover plate (31) fixed connection.

4. The multistage desulfurization and denitrification wastewater treatment device according to claim 1, wherein: the utility model discloses a motor structure, including second box (21), driven shaft (40) is fixed to be provided with in front end of second box (21) near the department down, the inside department of leaning on of front end of second box (21) is fixed to have seted up transmission groove (37), the front end inner wall rotation of transmission groove (37) is connected with transmission shaft (38), the output of third motor (36) runs through second box (21) and with transmission shaft (38) fixed connection, the outer wall of transmission shaft (38) is fixed to have cup jointed transmission bevel gear (39), rotate between the upper and lower inner wall of transmission groove (37) and be connected with driven shaft (40), driven bevel gear (41) has been fixedly cup jointed to driven bevel gear (41) and transmission bevel gear (39) meshing, the upper end of driven shaft (40) runs through second box (21) and with lift lead screw (25) fixed connection.

5. The multistage desulfurization and denitrification wastewater treatment device according to claim 1, wherein: one side of the inner wall of the lower end of the first box body (1) far away from the liquid level sensor (15) is fixedly connected with a filter screen cover (18), and one end of the water suction pipe (20) penetrates through the first box body (1) and is arranged in the filter screen cover (18).

6. The multistage desulfurization and denitrification wastewater treatment device according to claim 1, wherein: the upper end center of the fixed cover plate (31) is fixedly provided with a second motor (35), and the output end of the second motor (35) penetrates through the fixed cover plate (31) and is fixedly connected with the second stirring shaft (32).

7. The multistage desulfurization and denitrification wastewater treatment device according to claim 1, wherein: a first motor (16) is fixedly arranged at the lower part of one side, close to the liquid level sensor (15), of the first box body (1), and the output end of the first motor (16) penetrates through the first box body (1) and is fixedly connected with a first stirring shaft (17).

8. The multistage desulfurization and denitrification wastewater treatment device according to claim 1, wherein: the filter screen (46) is arranged at the lower part of the inner wall of one side, far away from the first box body (1), of the second box body (21), the water outlet pipe (47) is fixedly connected to the position, close to the filter screen (46), of one side, far away from the first box body (1), of the second box body (21), and a valve (48) is fixedly arranged on the outer wall of the water outlet pipe (47).