CN111908580A - Process and device for adding phosphorus removal agent for domestic sewage - Google Patents
Process and device for adding phosphorus removal agent for domestic sewage Download PDFInfo
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- CN111908580A CN111908580A CN202010666736.8A CN202010666736A CN111908580A CN 111908580 A CN111908580 A CN 111908580A CN 202010666736 A CN202010666736 A CN 202010666736A CN 111908580 A CN111908580 A CN 111908580A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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Abstract
The invention discloses a process and a device for adding a phosphorus removal agent for domestic sewage, relates to the related field of sewage treatment, and aims to solve the problem that in the prior art, after sewage enters a sedimentation tank, the phosphorus removal agent is added, and the sewage cannot be continuously subjected to phosphorus removal treatment because the sewage needs to wait for water inlet time, adding time, mixing and stirring time, reaction time, sedimentation time and drainage time. The adding process comprises the following steps: the method comprises the following steps: the sewage conveying pump pumps out the sewage; step two: the phosphorus removing agent enters a sewage outlet pipe and is mixed with the sewage which advances spirally; step three: closing a water inlet valve on the second dephosphorization pipeline, opening a water inlet valve of the first dephosphorization pipeline, and enabling the sewage mixed with the dephosphorization agent to enter the first dephosphorization pipeline; step four: and (3) introducing the sewage into a sub-sedimentation tank, sedimentating, closing a water inlet valve of the first dephosphorization pipeline, opening a water inlet valve on the second dephosphorization pipeline, waiting for sedimentation of the sewage of the first dephosphorization pipeline, and introducing the sewage into the second dephosphorization pipeline.
Description
Technical Field
The invention relates to the field related to sewage treatment, in particular to a process and a device for adding a phosphorus removal agent for domestic sewage.
Background
The phosphorus removing agent is a compound cationic inorganic polymeric flocculant of polyhydroxy polycomplex taking iron ions as a core, generates strong complexation on phosphate radical with negative charges, and meanwhile, hydrolysis products of the phosphorus removing agent can absorb a considerable amount of phosphorus compounds. The method is mainly used for removing total phosphorus in water bodies such as inorganic phosphorus, organic phosphorus and the like, effectively solving water eutrophication, and is used for treating waste water such as electroplating, circuit boards, chemical industry, domestic sewage and the like. The method can achieve the aim of deep phosphorus removal while performing coagulation and turbidity removal treatment on the urban water source water, thereby reducing the phosphorus content in the treated water to be below a limit value.
Under the condition of removing phosphorus from sewage by adopting a chemical agent-phosphorus removing agent, soluble phosphorus in the sewage can be quickly removed, the phosphorus removing is generally added before the sewage enters a sedimentation tank to ensure that the sewage is further precipitated in the sedimentation tank, but the phosphorus removing agent is added after the sewage enters the sedimentation tank, and the sewage needs to wait for water inlet time, adding time, mixing and stirring time, reaction time, precipitation time and drainage time, so that the phosphorus removing treatment of the sewage cannot be continuously carried out; therefore, the market urgently needs to develop a feeding process and a feeding device of the phosphorus removal agent for domestic sewage to help people solve the existing problems.
Disclosure of Invention
The invention aims to provide a process and a device for adding a phosphorus removal agent for domestic sewage, which are used for solving the problem that the phosphorus removal treatment of the sewage cannot be continuously carried out because the phosphorus removal agent is added after the sewage enters a sedimentation tank and the water inlet time, the adding time, the mixing and stirring time, the reaction time, the sedimentation time and the water drainage time need to be waited.
In order to achieve the purpose, the invention provides the following technical scheme: a main adding structure used in the adding process comprises a sewage conveying pump, a sewage inlet pipe, a sewage outlet pipe, a first self-spiral conveying mechanism, a second self-spiral conveying mechanism, a first phosphorus removing agent conveying pump, a first phosphorus removing agent inlet pipe, a first phosphorus removing agent outlet pipe, a first phosphorus removing pipeline, a second phosphorus removing pipeline, a first connecting pipeline, a first sludge inlet pipe, a first sludge discharge pipe, a first sludge conveying pump, a second connecting pipeline, an intermediate conveying pump, a third self-spiral conveying mechanism, a fourth self-spiral conveying mechanism, a third connecting pipeline, a second phosphorus removing agent outlet pipe, a second phosphorus removing agent inlet pipe, a second phosphorus removing agent conveying pump, a second sludge discharge pipe, a second sludge inlet pipe, a total sedimentation tank, a phosphorus removing sewage discharge pipe and a branch sedimentation tank;
wherein, the adding process comprises the following steps:
the method comprises the following steps: the sewage flowing into the sewage inlet pipe is pumped out from the sewage outlet pipe under the action of the sewage conveying pump, the first self-spiral conveying mechanism provides power for the sewage flowing inside to flow forwards in a spiral mode, and water flow advances in a spiral mode;
step two: the first phosphorus removing agent conveying pump pumps the phosphorus removing agent in the first phosphorus removing agent inlet pipe into the sewage outlet pipe through the first phosphorus removing agent outlet pipe, the phosphorus removing agent and the sewage are mixed through the second self-spiral conveying mechanism, and the sewage mixed with the phosphorus removing agent is provided with power for the forward spiral flowing of the sewage to continuously advance in a spiral manner;
step three: closing a water inlet valve on the second dephosphorization pipeline, opening a water inlet valve of the first dephosphorization pipeline, and enabling the sewage mixed with the dephosphorization agent to enter the first dephosphorization pipeline;
step four: the sewage of the mixed phosphorus removing agent is continuously introduced into the sub-sedimentation tank and is precipitated in the sub-sedimentation tank, when the sewage in the sub-sedimentation tank in the first phosphorus removing pipeline reaches a standard line, a water inlet valve of the first phosphorus removing pipeline is closed, a water inlet valve on the second phosphorus removing pipeline is opened, the sewage in the sub-sedimentation tank of the first phosphorus removing pipeline waits for precipitation, and the continuously introduced sewage of the mixed phosphorus removing agent enters the second phosphorus removing pipeline;
step five: the sewage of the mixed phosphorus removing agent is continuously fed into the sub-sedimentation tank and is precipitated in the sub-sedimentation tank, when the sewage in the sub-sedimentation tank in the second phosphorus removing pipeline is about to reach a standard line, the sewage precipitation in the sub-sedimentation tank in the first phosphorus removing pipeline is finished, the sewage after primary treatment is pumped out through the middle delivery pump, and then the sludge pumped into the first sludge inlet pipe is pumped out from the first sludge discharge pipe through the first sludge delivery pump;
step six: the sewage pumped out by the middle conveying pump in the step five spirally advances by the power which is provided by the third self-spiral conveying mechanism and spirally flows forwards;
step seven: the second phosphorus removing agent conveying pump pumps the phosphorus removing agent in the second phosphorus removing agent inlet pipe into the third connecting pipeline through the second phosphorus removing agent outlet pipe, the phosphorus removing agent and the sewage are mixed with the sewage which advances in a spiral manner, then the phosphorus removing agent and the sewage are further mixed through the fourth self-spiral conveying mechanism, and the sewage mixed with the phosphorus removing agent is provided with power for the forward flowing of the spiral manner, so that the sewage continues to advance in the spiral manner and is introduced into the total sedimentation tank;
step eight: after the primarily treated sewage in the first phosphorus removal pipeline in the step seven enters a main sedimentation tank, the sewage in a sub sedimentation tank in the second phosphorus removal pipeline reaches a standard line, a water inlet valve of the second phosphorus removal pipeline is closed, a water inlet valve of the first phosphorus removal pipeline is opened, and water is fed again for sedimentation;
step nine: and seventhly, feeding the sewage into the main sedimentation tank while precipitating, discharging the sewage subjected to secondary dephosphorization through a dephosphorization sewage discharge pipe, and pumping the sludge pumped into the second sludge inlet pipe through a second sludge discharge pipe by using a second sludge conveying pump.
Preferably, water feeding, precipitation, water draining, sludge discharging and post-treatment steps in the first phosphorus removal pipeline and the second phosphorus removal pipeline are performed alternately.
A sewage inlet pipe is installed at the input end of a sewage delivery pump, a sewage outlet pipe is installed at the output end of the sewage delivery pump, a first self-spiral delivery mechanism and a second self-spiral delivery mechanism are installed on the sewage outlet pipe, a first three-way pipe is installed between the first self-spiral delivery mechanism and the second self-spiral delivery mechanism, the other pipe of the first three-way pipe is connected with a first phosphorus removal agent inlet pipe, a first phosphorus removal agent delivery pump is installed at one end, away from the first three-way pipe, of the first phosphorus removal agent inlet pipe, a first phosphorus removal agent outlet pipe is installed at the output end of the first phosphorus removal agent delivery pump, the other end of the sewage outlet pipe is connected with a first connecting pipe on two pipelines of a first phosphorus removal pipeline and a second phosphorus removal pipeline through a second three-way pipe, and water inlet valves are installed at the beginning sections of the first phosphorus removal pipeline and the second phosphorus removal pipeline, the first dephosphorization pipeline and the second dephosphorization pipeline are respectively provided with a first sludge inlet pipe, a first sludge discharge pipe, a first sludge delivery pump, a second connecting pipeline, an intermediate delivery pump, a third self-screw delivery mechanism, a fourth self-screw delivery mechanism, a third connecting pipeline and a branch sedimentation tank, the branch sedimentation tank is positioned at one end of the first connecting pipeline far away from the second three-way pipe, the output end of the first sludge delivery pump is provided with the first sludge discharge pipe, the input end of the first sludge delivery pump is provided with the first sludge inlet pipe, the first sludge inlet pipe extends to the inside of the branch sedimentation tank, the other side of the branch sedimentation tank is provided with the second connecting pipeline, the mounting position of the second connecting pipeline is higher than that of the first connecting pipeline, the other end of the second connecting pipeline is provided with the intermediate delivery pump, the output end of the intermediate delivery pump is provided with the third connecting pipeline, the third connecting pipeline is provided with a third self-spiral conveying mechanism and a fourth self-spiral conveying mechanism, a third three-way pipe is arranged between the third self-spiral conveying mechanism and the fourth self-spiral conveying mechanism, a second phosphorus removal agent outlet pipe is arranged on another through pipe of the third three-way pipe, one end, away from the third three-way pipe, of the second phosphorus removal agent outlet pipe is provided with a second phosphorus removal agent conveying pump, the input end of the second phosphorus removal agent conveying pump is connected with a second phosphorus removal agent inlet pipe, the other end of the third connecting pipeline is provided with a main sedimentation tank, the main sedimentation tank is internally provided with a second sludge inlet pipe, the other end of the second sludge inlet pipe is provided with a second sludge conveying pump, the output end of the second sludge conveying pump is provided with a second sludge discharge pipe, and the other side of the main sedimentation tank is provided with a phosphorus removal sewage discharge pipe.
Preferably, the first self-spiral conveying mechanism, the second self-spiral conveying mechanism, the third self-spiral conveying mechanism and the fourth self-spiral conveying mechanism are internally provided with a fixed disc, an intermediate shaft, side spiral plates and an intermediate baffle plate, the fixed disc is positioned at two sides of the interiors of the first self-spiral conveying mechanism, the second self-spiral conveying mechanism, the third self-spiral conveying mechanism and the fourth self-spiral conveying mechanism, the fixed disc is fixedly connected with the inner walls of the first self-spiral conveying mechanism, the second self-spiral conveying mechanism, the third self-spiral conveying mechanism and the fourth self-spiral conveying mechanism, the side spiral plates are positioned at the inner side of the fixed disc, the side spiral plates are provided with a plurality of side spiral plates, the plurality of side spiral plates are arranged in a circular array by taking the center of the fixed disc as a circle center, the plurality of side spiral plates are arranged in a spiral manner, the plurality of side spiral plates are fixedly connected with the inner walls of the fixed disc, the intermediate baffle plate, middle baffle and side spiral plate fixed connection, the jackshaft is located between two middle baffles, and middle baffle passes through the bearing rotation with the jackshaft and is connected.
Preferably, the outer side of the intermediate shaft is provided with a plurality of intermediate sleeves, the intermediate sleeves are fixed with the intermediate shaft through key slots, and the outer side of each intermediate sleeve is fixedly connected with a spiral blade.
Preferably, one end of the first phosphorus removal agent inlet pipe, which is far away from the first phosphorus removal agent delivery pump and the second phosphorus removal agent delivery pump, of the second phosphorus removal agent inlet pipe on the first phosphorus removal pipeline and the second phosphorus removal pipeline is fixedly connected with a diluted phosphorus removal agent outlet pipe, the other end of the diluted phosphorus removal agent outlet pipe is connected with a stirring shell, a phosphorus removal sewage branch pipe extends out of the phosphorus removal sewage discharge pipe, the other end of the phosphorus removal sewage branch pipe is connected with a stirring shell, the upper end of the stirring shell is provided with a driving motor, and phosphorus removal agent adding pipes are arranged at the upper end of the stirring shell along two sides of the driving motor.
Preferably, one end of the dephosphorization sewage branch pipe extends to the inside of the stirring shell and is fixedly connected with the mixing disc, the dephosphorization agent adding pipe extends to the inside of the stirring shell and is fixedly connected with the mixing disc, the lower end of the mixing disc is provided with a spray head, the horizontal position of the spray head is staggered with the horizontal position of the dephosphorization agent adding pipe, and the mixing disc and the stirring shell are fixedly connected through an upper connecting column and a side connecting block.
Preferably, the output end of the driving motor is connected with a stirring shaft, a plurality of stirring rods are symmetrically arranged on two sides of the stirring shaft, a plurality of stirring support rods are symmetrically arranged at the upper end and the lower end of each stirring rod, and the stirring support rods are alternately arranged on the two adjacent stirring rods.
Preferably, a vertical plate is arranged on one side inside the total sedimentation tank, the third connecting pipeline extends into a cavity formed by the inner wall of the total sedimentation tank and the vertical plate, a water outlet head is arranged on one side of the third connecting pipeline, a reinforcing side plate is arranged at the position, opposite to the water outlet head, of the inner wall of the total sedimentation tank, a speed reducing salient point is fixedly arranged on the reinforcing side plate, and an arc-shaped part is arranged between the lower end of the reinforcing side plate and the lower bottom plate of the total sedimentation tank.
Preferably, the lower end of the second sludge inlet pipe is provided with a sludge suction disc, and the lower end of the sludge suction disc is provided with a plurality of sludge suction heads.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, three phosphorus removal steps are provided, wherein the phosphorus removal of a first phosphorus removal pipeline and a second phosphorus removal pipeline is performed alternately according to the procedures of sewage inlet, sedimentation and discharge, and finally collected into a total sedimentation tank;
2. in the invention, before each precipitation, a phosphorus removing agent is not simply added, but in a related pipeline of water inlet, the phosphorus removing agent is added when sewage flows, the sewage continues to spirally forward acting force through a spiral conveying mechanism, the sewage is firstly contacted with a side spiral plate after reaching the spiral conveying mechanism, because the side spiral plate is spirally arranged and the influence of high speed of the water flow pumped by the sewage is added, the sewage has a certain spiral flowing trend when passing through a fixed disc, the sewage reaches the middle position of the spiral conveying mechanism along the flowing direction, the spiral blade is continuously beaten by the spirally forward water flow and then provides a rotating power for the spiral blade, an intermediate shaft connected with an intermediate sleeve pipe realizes self-rotation under the action of a bearing connected with the intermediate baffle at two sides, and the spiral blade continuously provides the forward force for the water flow in the rotating process, so the sewage is mixed through the rotation of the spiral blade in the flowing process, the given spiral thrust can continue to rotate under the action of the lost spiral blade, so that the sewage and the phosphorus removing agent are further fully mixed, the sewage in the sub-sedimentation tank or the total sedimentation tank only needs to wait for the sedimentation of the sewage in the sub-sedimentation tank or the total sedimentation tank through the action of the phosphorus removing agent which is fully mixed with the sewage when reaching the sub-sedimentation tank or the total sedimentation tank, and the phosphorus removing agent is added and fully stirred when the sewage flows to the front of the next working procedure, so that the throwing time and the fully stirring time of the phosphorus removing agent after the sewage enters the sedimentation tank are reduced, and the adding efficiency of the phosphorus removing agent is higher;
3. in the invention, the phosphorus removing agent is used as required and is used after being diluted with water, the sewage after phosphorus removal is directly utilized to enter the stirring shell, mixing with the phosphorus removing agent in the mixing disc, when the valve on the phosphorus removing sewage branch pipe is closed, no water enters the stirring shell, under the action of no external force, the dephosphorization agent has no obvious effect after entering the mixing disc, when the dephosphorization agent is needed, the valve on the dephosphorization sewage branch pipe is opened, water enters the mixing disc, the phosphorus removing agent in the mixing disc is premixed under the action of water flow and enters the stirring shell through the spray header, further stirring by a stirring shaft, a stirring rod and a stirring support rod, opening a plurality of upper valves of the phosphorus removing agent inlet pipe to realize the feeding of the phosphorus removing agent, therefore, the phosphorus removing agent can be prepared at present, the diluted phosphorus removing agent can not be stored for too long time, and the problem of failure of the phosphorus removing agent is avoided;
4. in the invention, the sewage led into the main sedimentation tank by the third connecting pipeline does not flow in through the lower end of the third connecting pipeline, but flows in through the water outlet head arranged on the side surface, and the water inlet is decelerated by the deceleration salient points of the reinforced side plate (the deceleration is realized by increasing the strength of the lower flow path, compared with the deceleration realized by the direct flow of gravity, the deceleration speed is reduced), so that the sediment is prevented from being disturbed in the water inlet process, the sewage flows in along the arc-shaped part of the reinforced side plate, and the disturbance to the water flow is reduced as much as possible;
5. in the invention, the stirring rods are symmetrically arranged at two sides of the stirring shaft, the stirring support rods are also symmetrically arranged at two ends of the stirring rod, but the stirring support rods on the upper stirring rod and the lower stirring rod are staggered from side to side, so that the stirring of water flow on the same vertical plane is avoided, and the dilution stirring efficiency of the phosphorus removing agent is improved.
Drawings
FIG. 1 is a front view of a process and a device for adding a phosphorus removal agent for domestic sewage according to the present invention;
FIG. 2 is a first self-spiral delivery mechanism of the present invention;
FIG. 3 is a schematic view of the connection structure of the middle sleeve and the spiral vane of the present invention;
FIG. 4 is a side view of the holding pan of the present invention;
FIG. 5 is an internal structural view of a general settling tank of the present invention;
FIG. 6 is an internal structural view of the agitator housing of the present invention;
fig. 7 is a schematic structural view of a hybrid disc of the present invention.
In the figure: 1. a sewage delivery pump; 2. a sewage inlet pipe; 3. a sewage outlet pipe; 4. a first self-spiral conveying mechanism; 5. a second self-spiral conveying mechanism; 6. a first phosphorus removal agent delivery pump; 7. a first phosphorus removal agent inlet pipe; 8. a first dephosphorizing agent outlet pipe; 9. a first phosphorus removal line; 10. a second phosphorus removal line; 11. a first connecting pipe; 12. a first sludge inlet pipe; 13. a first sludge drain pipe; 14. a first sludge transfer pump; 15. a second connecting pipe; 16. an intermediate transfer pump; 17. a third self-spiral conveying mechanism; 18. a fourth self-spiral conveying mechanism; 19. a third connecting pipe; 20. a second phosphorus removal agent outlet pipe; 21. a second phosphorus removal agent inlet pipe; 22. a second phosphorus removal agent delivery pump; 23. a second sludge transfer pump; 24. a second sludge drain pipe; 25. a second sludge inlet pipe; 26. a total sedimentation tank; 27. a dephosphorization sewage discharge pipe; 28. a dephosphorization sewage branch pipe; 29. fixing the disc; 30. an intermediate shaft; 31. an intermediate sleeve; 32. helical leaves; 33. a side spiral plate; 34. an intermediate baffle; 35. reinforcing the side plate; 36. a deceleration bump; 37. a water outlet head; 38. a vertical plate; 39. an arc-shaped portion; 40. a mud sucking disc; 41. a mud suction head; 42. a drive motor; 43. stirring the shell; 44. a phosphorus removal agent addition pipe; 45. a mixing tray; 46. a shower head; 47. a stirring shaft; 48. a stirring rod; 49. stirring the supporting rod; 50. a diluted phosphorus removal agent outlet pipe; 51. an upper connecting column; 52. a side connecting block; 53. and (4) separating a sedimentation tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-7, an embodiment of the present invention is shown: a main adding structure used in the adding process comprises a sewage conveying pump 1, a sewage inlet pipe 2, a sewage outlet pipe 3, a first self-spiral conveying mechanism 4, a second self-spiral conveying mechanism 5, a first phosphorus removing agent conveying pump 6, a first phosphorus removing agent inlet pipe 7, a first phosphorus removing agent outlet pipe 8, a first phosphorus removing pipeline 9, a second phosphorus removing pipeline 10, a first connecting pipeline 11, a first sludge inlet pipe 12, a first sludge discharge pipe 13 and a first sludge conveying pump 14, a second connecting pipeline 15, an intermediate delivery pump 16, a third self-spiral delivery mechanism 17, a fourth self-spiral delivery mechanism 18, a third connecting pipeline 19, a second phosphorus removal agent outlet pipe 20, a second phosphorus removal agent inlet pipe 21, a second phosphorus removal agent delivery pump 22, a second sludge delivery pump 23, a second sludge discharge pipe 24, a second sludge inlet pipe 25, a total sedimentation tank 26, a phosphorus removal sewage discharge pipe 27 and a sub-sedimentation tank 53;
wherein, the adding process comprises the following steps:
the method comprises the following steps: the sewage flowing into the sewage inlet pipe 2 is pumped out from the sewage outlet pipe 3 under the action of the sewage conveying pump 1, the first self-spiral conveying mechanism 4 gives the sewage flowing inside a spiral forward flowing power, and the water flow spirally advances;
step two: the first phosphorus removing agent delivery pump 6 pumps the phosphorus removing agent in the first phosphorus removing agent inlet pipe 7 into the sewage outlet pipe 3 through the first phosphorus removing agent outlet pipe 8, the phosphorus removing agent and the sewage are mixed through the second self-spiral delivery mechanism 5, and the sewage mixed with the phosphorus removing agent is further mixed with the sewage and is provided with power for the forward flowing of a spiral to enable the sewage to continue to advance in a spiral manner;
step three: closing a water inlet valve on the second phosphorus removal pipeline 10, opening a water inlet valve of the first phosphorus removal pipeline 9, and enabling the sewage mixed with the phosphorus removal agent to enter the first phosphorus removal pipeline 9;
step four: the sewage of the mixed phosphorus removing agent is continuously fed into the sub-sedimentation tank 53 and is precipitated in the sub-sedimentation tank 53, when the sewage in the sub-sedimentation tank 53 in the first phosphorus removing pipeline 9 reaches a standard line, a water inlet valve of the first phosphorus removing pipeline 9 is closed, a water inlet valve on the second phosphorus removing pipeline 10 is opened, the sewage in the sub-sedimentation tank 53 of the first phosphorus removing pipeline 9 waits for sedimentation, and the sewage of the continuously fed mixed phosphorus removing agent enters the second phosphorus removing pipeline 10;
step five: the sewage of the mixed phosphorus removing agent is continuously fed into the sub-sedimentation tank 53 and is sedimentated in the sub-sedimentation tank 53, when the sewage in the sub-sedimentation tank 53 in the second phosphorus removing pipeline 10 is about to reach a standard line, the sewage in the sub-sedimentation tank 53 in the first phosphorus removing pipeline 9 is sedimentated, the sewage after primary treatment is pumped out by the intermediate transfer pump 16, and then the sludge pumped in the first sludge inlet pipe 12 is pumped out from the first sludge discharge pipe 13 by the first sludge transfer pump 14;
step six: in the fifth step, the sewage pumped out by the intermediate delivery pump 16 spirally advances by the power which is given by the third self-spiral delivery mechanism 17 and spirally flows forwards;
step seven: the second phosphorus removing agent delivery pump 22 pumps the phosphorus removing agent in the second phosphorus removing agent inlet pipe 21 into the third connecting pipeline 19 through the second phosphorus removing agent outlet pipe 20, the phosphorus removing agent and the sewage are mixed through the spiral advancing sewage, then the phosphorus removing agent and the sewage are further mixed through the fourth self-spiral delivery mechanism 18, and the sewage mixed with the phosphorus removing agent is provided with a spiral advancing power to continue to advance spirally and is introduced into the total sedimentation tank 26;
step eight: after the primarily treated sewage in the first phosphorus removal pipeline 9 in the step seven enters the main sedimentation tank 26, the sewage in the sub sedimentation tank 53 in the second phosphorus removal pipeline 10 reaches a standard line, the water inlet valve of the second phosphorus removal pipeline 10 is closed, the water inlet valve of the first phosphorus removal pipeline 9 is opened, and water is fed again for sedimentation;
step nine: and step seven, the sewage entering the main sedimentation tank 26 is subjected to water inlet and sedimentation, the sewage subjected to secondary dephosphorization is discharged through the dephosphorization sewage discharge pipe 27, and the second sludge transfer pump 23 pumps the sludge pumped into the second sludge inlet pipe 25 out of the second sludge discharge pipe 24.
Further, the water feeding, the precipitation, the water discharging, the sludge discharging and the post-treatment steps in the first phosphorus removal pipeline 9 and the second phosphorus removal pipeline 10 are performed alternately.
A sewage inlet pipe 2 is installed at the input end of a sewage delivery pump 1, a sewage outlet pipe 3 is installed at the output end of the sewage delivery pump 1, a first self-spiral delivery mechanism 4 and a second self-spiral delivery mechanism 5 are installed on the sewage outlet pipe 3, a first three-way pipe is installed between the first self-spiral delivery mechanism 4 and the second self-spiral delivery mechanism 5, the other pipe of the first three-way pipe is connected with a first phosphorus removal agent inlet pipe 7, a first phosphorus removal agent delivery pump 6 is installed at one end, away from the first three-way pipe, of the first phosphorus removal agent inlet pipe 7, a first phosphorus removal agent outlet pipe 8 is installed at the output end of the first phosphorus removal agent delivery pump 6, the other end of the sewage outlet pipe 3 is connected with a first connecting pipeline 11 on two pipelines, namely a first phosphorus removal pipeline 9 and a second phosphorus removal pipeline 10, and water inlet valves are installed at the beginning sections of the first phosphorus removal pipeline 9 and the second phosphorus removal pipeline 10, the first dephosphorization pipeline 9 and the second dephosphorization pipeline 10 are respectively provided with a first sludge inlet pipe 12, a first sludge drain pipe 13, a first sludge delivery pump 14, a second connecting pipeline 15, an intermediate delivery pump 16, a third self-spiral delivery mechanism 17, a fourth self-spiral delivery mechanism 18, a third connecting pipeline 19 and a sub-sedimentation tank 53, the sub-sedimentation tank 53 is positioned at one end of the first connecting pipeline 11 far away from the second three-way pipe, the output end of the first sludge delivery pump 14 is provided with the first sludge drain pipe 13, the input end of the first sludge delivery pump 14 is provided with the first sludge inlet pipe 12, the first sludge inlet pipe 12 extends to the inside of the sub-sedimentation tank 53, the other side of the sub-sedimentation tank 53 is provided with the second connecting pipeline 15, the mounting position of the second connecting pipeline 15 is higher than that of the first connecting pipeline 11, the other end of the second connecting pipeline 15 is provided with the intermediate delivery pump 16, the output end of the intermediate delivery pump 16 is provided with the third connecting pipeline 19, a third self-spiral conveying mechanism 17 and a fourth self-spiral conveying mechanism 18 are installed on a third connecting pipeline 19, a third three-way pipe is installed between the third self-spiral conveying mechanism 17 and the fourth self-spiral conveying mechanism 18, a second phosphorus removing agent outlet pipe 20 is installed on the other through pipe of the third three-way pipe, a second phosphorus removing agent conveying pump 22 is installed at one end, away from the third three-way pipe, of the second phosphorus removing agent outlet pipe 20, a second phosphorus removing agent inlet pipe 21 is connected to the input end of the second phosphorus removing agent conveying pump 22, a main sedimentation tank 26 is installed at the other end of the third connecting pipeline 19, a second sludge inlet pipe 25 is installed inside the main sedimentation tank 26, a second sludge conveying pump 23 is installed at the other end of the second sludge inlet pipe 25, a second sludge discharge pipe 24 is installed at the output end of the second sludge conveying pump 23, and a phosphorus removing sewage discharge pipe 27 is installed at the other side of the.
Furthermore, the fixed disks 29, the intermediate shafts 30, the side spiral plates 33 and the intermediate baffle plates 34 are arranged in the first self-spiral conveying mechanism 4, the second self-spiral conveying mechanism 5, the third self-spiral conveying mechanism 17 and the fourth self-spiral conveying mechanism 18, the fixed disks 29 are positioned at two sides in the first self-spiral conveying mechanism 4, the second self-spiral conveying mechanism 5, the third self-spiral conveying mechanism 17 and the fourth self-spiral conveying mechanism 18, the fixed disks 29 are fixedly connected with the inner walls of the first self-spiral conveying mechanism 4, the second self-spiral conveying mechanism 5, the third self-spiral conveying mechanism 17 and the fourth self-spiral conveying mechanism 18, the side spiral plates 33 are positioned at the inner side of the fixed disks 29, the side spiral plates 33 are provided with a plurality, the side spiral plates 33 are spirally arranged by taking the center of the fixed disks 29 as a circle center, the side spiral plates 33 are fixedly connected with the inner walls of the fixed disks 29, the middle baffle plate 34 is positioned in the middle of the side spiral plates 33, the middle baffle plate 34 is fixedly connected with the side spiral plates 33, the middle shaft 30 is positioned in the middle of the two middle baffle plates 34, the middle baffle plate 34 is rotatably connected with the middle shaft 30 through a bearing, sewage reaches the spiral conveying mechanism and then is firstly contacted with the side spiral plates 33, due to the spiral arrangement of the side spiral plates 33 and the influence of the high speed of water flow sent by the sewage conveying pump 1, the sewage has a certain spiral flowing trend when passing through the fixed disc 29, the sewage reaches the middle position of the first spiral conveying mechanism 4 along the flowing direction, the spiral blades 32 are continuously beaten by the spirally advancing water flow and then provide a rotating power for the spiral blades 32, the middle shaft 30 connected with the middle sleeve 31 realizes the self-rotation under the action of the bearings connected with the middle baffle plates 34 at two sides, and the spiral blades 32 continue to provide the forward force for the water flow in the rotating process, thus mixing by the rotation of the spiral blades 32 during the sewage flow and imparting spiral thrust to continue rotating without the spiral blades.
Further, a plurality of intermediate sleeves 31 are provided on the outer side of the intermediate shaft 30, the intermediate sleeves 31 and the intermediate shaft 30 are fixed by key grooves, and spiral blades 32 are fixedly connected to the outer side of the intermediate sleeves 31.
Further, one end of the second phosphorus removal agent inlet pipe 21 on the first phosphorus removal agent inlet pipe 7, the first phosphorus removal pipeline 9 and the second phosphorus removal pipeline 10, which is far away from the first phosphorus removal agent delivery pump 6 and the second phosphorus removal agent delivery pump 22, is fixedly connected with a diluted phosphorus removal agent outlet pipe 50, the other end of the diluted phosphorus removal agent outlet pipe 50 is connected with a stirring shell 43, a phosphorus removal sewage branch pipe 28 extends from the phosphorus removal sewage outlet pipe 27, the other end of the phosphorus removal sewage branch pipe 28 is connected with the stirring shell 43, the upper end of the stirring shell 43 is provided with a driving motor 42, and the upper end of the stirring shell 43 is provided with phosphorus removal agent adding pipes 44 along two sides of the driving.
Further, one end of the dephosphorization sewage branch pipe 28 extends to the inside of the stirring shell 43 and is fixedly connected with the mixing disc 45, the dephosphorization agent adding pipe 44 extends to the inside of the stirring shell 43 and is fixedly connected with the mixing disc 45, the lower end of the mixing disc 45 is provided with a spray header 46, the horizontal position of the spray header 46 is staggered with the horizontal position of the dephosphorization agent adding pipe 44, the dephosphorization agent entering the dephosphorization agent adding pipe 44 is prevented from directly entering the spray header 46, the spraying is downward, and the mixing disc 45 and the stirring shell 43 are fixedly connected through an upper connecting column 51 and a side connecting block 52.
Further, the output end of the driving motor 42 is connected with a stirring shaft 47, a plurality of stirring rods 48 are symmetrically arranged on two sides of the stirring shaft 47, a plurality of stirring support rods 49 are symmetrically arranged at the upper end and the lower end of each stirring rod 48, and the stirring support rods 49 are alternately arranged on the two adjacent stirring rods 48 up and down, so that sufficient stirring is carried out, and the stirring time is greatly shortened under the same feeding condition.
Furthermore, a vertical plate 38 is arranged on one side inside the main sedimentation tank 26, the third connecting pipe 19 extends into a cavity formed by the inner wall of the main sedimentation tank 26 and the vertical plate 38, a water outlet head 37 is arranged on one side of the third connecting pipe 19, a reinforcing side plate 35 is arranged at a position opposite to the water outlet head 37 on the inner wall of the main sedimentation tank 26, a speed reducing salient point 36 is fixedly arranged on the reinforcing side plate 35, an arc-shaped part 39 is arranged between the lower end of the reinforcing side plate 35 and the lower bottom plate of the main sedimentation tank 26, the inflow water is reduced by the speed reducing salient point 36 of the reinforcing side plate 35 (the speed is reduced by increasing a down flow path compared with the speed reduced by the gravity direct flow-down), the sediment is prevented from being disturbed in the water inflow process, the inflow is carried out along the arc-shaped part 39 of the reinforcing side plate 35, because the primary phosphorus removal is carried out in the sub-sedimentation tank 53, the phosphorus removal effect can be ensured even if water is fed into the subsequent main sedimentation tank 26 while sedimentation is carried out. The inner structure of the sub-settling tank 53 is substantially the same as that of the overall settling tank 26.
Further, a sludge suction disc 40 is provided at the lower end of the second sludge inlet pipe 25, and a plurality of sludge suction heads 41 are provided at the lower end of the sludge suction disc 40 to remove sludge after water is drained.
Whether the settling time, the drainage time, the subsequent treatment time and the water inlet time brought by the internal capacity of the sub-settling tank 53 in a single line are equal or not needs to be considered, so that the capacity of the single sub-settling tank 53 is adjusted, whether a third phosphorus removal pipeline is added for alternate settling or not is judged, and the reconstruction and the selective arrangement can be performed according to the original equipment conditions of a factory.
The working principle is as follows: when the sewage treatment device is used, sewage flowing into the sewage inlet pipe 2 is pumped out from the sewage outlet pipe 3 under the action of the sewage conveying pump 1, the first spiral conveying mechanism 4 provides power for the sewage flowing inside to flow forwards in a spiral mode, the water flow advances in a spiral mode, the sewage reaches the first spiral conveying mechanism 4 and then contacts the side spiral plates 33 at first, due to the spiral arrangement of the side spiral plates 33 and the influence of the high speed of the water flow sent by the sewage conveying pump 1, the sewage has a certain spiral flowing trend when passing through the fixed disc 29, the sewage reaches the middle position of the first spiral conveying mechanism 4 along the flowing direction, the spiral blades 32 are sequentially flapped by the spirally advancing water flow and provide power for the spiral blades 32 to rotate, the middle shaft 30 connected with the middle sleeve 31 realizes self-rotation under the action of the bearings connected with the middle baffles 34 at two sides, and the spiral blades 32 continue to provide forward force for the water flow in the rotating process, therefore, the sewage is mixed by the rotation of the spiral blades 32 in the flowing process of the sewage, and the given spiral thrust can continue to rotate under the condition of losing the action of the spiral blades; the first phosphorus removing agent delivery pump 6 pumps the phosphorus removing agent in the first phosphorus removing agent inlet pipe 7 into the sewage outlet pipe 3 through the first phosphorus removing agent outlet pipe 8, the phosphorus removing agent and the sewage are mixed through the second self-spiral delivery mechanism 5, and the sewage mixed with the phosphorus removing agent is further mixed with the sewage and is provided with power for the forward flowing of a spiral to enable the sewage to continue to advance in a spiral manner; closing a water inlet valve on the second phosphorus removal pipeline 10, opening a water inlet valve of the first phosphorus removal pipeline 9, and enabling the sewage mixed with the phosphorus removal agent to enter the first phosphorus removal pipeline 9; the sewage of the mixed phosphorus removing agent is continuously fed into the sub-sedimentation tank 53 and is precipitated in the sub-sedimentation tank 53, when the sewage in the sub-sedimentation tank 53 in the first phosphorus removing pipeline 9 reaches a standard line, a water inlet valve of the first phosphorus removing pipeline 9 is closed, a water inlet valve on the second phosphorus removing pipeline 10 is opened, the sewage in the sub-sedimentation tank 53 of the first phosphorus removing pipeline 9 waits for sedimentation, and the sewage of the continuously fed mixed phosphorus removing agent enters the second phosphorus removing pipeline 10; the sewage of the mixed phosphorus removing agent is continuously fed into the sub-sedimentation tank 53 and is sedimentated in the sub-sedimentation tank 53, when the sewage in the sub-sedimentation tank 53 in the second phosphorus removing pipeline 10 is about to reach a standard line, the sewage in the sub-sedimentation tank 53 in the first phosphorus removing pipeline 9 is sedimentated, the sewage after primary treatment is pumped out by the intermediate transfer pump 16, and then the sludge pumped in the first sludge inlet pipe 12 is pumped out from the first sludge discharge pipe 13 by the first sludge transfer pump 14; the sewage pumped out by the intermediate delivery pump 16 spirally advances by the power of the spiral forward flow given by the third self-spiral delivery mechanism 17; the second phosphorus removing agent delivery pump 22 pumps the phosphorus removing agent in the second phosphorus removing agent inlet pipe 21 into the third connecting pipeline 19 through the second phosphorus removing agent outlet pipe 20, the phosphorus removing agent and the sewage are mixed through the spiral advancing sewage, then the phosphorus removing agent and the sewage are further mixed through the fourth self-spiral delivery mechanism 18, and the sewage mixed with the phosphorus removing agent is provided with a spiral advancing power to continue to advance spirally and is introduced into the total sedimentation tank 26; after the primarily treated sewage in the first phosphorus removal pipeline 9 enters the main sedimentation tank 26, the sewage in the sub sedimentation tank 53 in the second phosphorus removal pipeline 10 reaches a standard line, the water inlet valve of the second phosphorus removal pipeline 10 is closed, the water inlet valve of the first phosphorus removal pipeline 9 is opened, and water is fed again for sedimentation; the sewage entering the main sedimentation tank 26 is sprayed out through the water outlet head 37, the sprayed water flow is decelerated through a path formed by the deceleration salient points 36 on the reinforced side plate 35, the entering water flow flows down at a slow speed, the sewage flows into a main sedimentation area inside the main sedimentation tank 26 through the arc-shaped part 39 and the vertical plate 38, sedimentation is carried out while water inflow, the sewage after secondary dephosphorization is discharged through the dephosphorization sewage discharge pipe 27, and the sludge pumped into the second sludge inlet pipe 25 is pumped out from the second sludge discharge pipe 24 by the second sludge conveying pump 23. The sewage treated in the dephosphorization sewage discharge pipe 27 is led out through the dephosphorization sewage branch pipe 28 and is led into the stirring shell 43 to be mixed with the dephosphorization agent led in from the dephosphorization agent adding pipe 44 in the mixing disc 45 and is uniformly sprayed out through the spray header 46, the driving motor 42 drives the stirring shaft 47 to rotate and stir, the diluted dephosphorization agent is led into the first dephosphorization agent inlet pipe 7 and the second dephosphorization agent inlet pipe 21 through the diluted dephosphorization agent outlet pipe 50, and the dephosphorization agent is led in the first dephosphorization agent inlet pipe 7 and the second dephosphorization agent inlet pipe 21 through the control valve, so as to carry out dephosphorization.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A process for adding a phosphorus removing agent for domestic sewage is characterized by comprising the following steps: the main adding structure used in the adding process comprises a sewage conveying pump (1), a sewage inlet pipe (2), a sewage outlet pipe (3), a first self-spiral conveying mechanism (4), a second self-spiral conveying mechanism (5), a first phosphorus removing agent conveying pump (6), a first phosphorus removing agent inlet pipe (7), a first phosphorus removing agent outlet pipe (8), a first phosphorus removing pipeline (9), a second phosphorus removing pipeline (10), a first connecting pipeline (11), a first sludge inlet pipe (12), a first sludge discharge pipe (13), a first sludge conveying pump (14), a second connecting pipeline (15), a middle conveying pump (16), a third self-spiral conveying mechanism (17), a fourth self-spiral conveying mechanism (18), a third connecting pipeline (19), a second phosphorus removing agent outlet pipe (20), a second phosphorus removing agent inlet pipe (21), a second phosphorus removing agent conveying pump (22), a second sludge conveying pump (23), A second sludge discharge pipe (24), a second sludge inlet pipe (25), a total sedimentation tank (26), a dephosphorization sewage discharge pipe (27) and a sub-sedimentation tank (53);
wherein, the adding process comprises the following steps:
the method comprises the following steps: the sewage flowing into the sewage inlet pipe (2) is pumped out from the sewage outlet pipe (3) under the action of the sewage conveying pump (1), the first self-spiral conveying mechanism (4) gives the sewage flowing inside a spiral forward flowing power, and the water flow spirally advances;
step two: the first phosphorus removing agent delivery pump (6) pumps the phosphorus removing agent in the first phosphorus removing agent inlet pipe (7) into the sewage outlet pipe (3) through the first phosphorus removing agent outlet pipe (8), the phosphorus removing agent is mixed with the sewage which advances spirally, then the phosphorus removing agent and the sewage are further mixed through the second self-spiral delivery mechanism (5), and the sewage mixed with the phosphorus removing agent is provided with power for the forward flowing of the spiral to continue to advance spirally;
step three: closing a water inlet valve on the second dephosphorization pipeline (10), opening a water inlet valve of the first dephosphorization pipeline (9), and enabling the sewage mixed with the dephosphorization agent to enter the first dephosphorization pipeline (9);
step four: the sewage of the mixed phosphorus removing agent is continuously introduced into the sub-sedimentation tank (53) and is precipitated in the sub-sedimentation tank (53), when the sewage in the sub-sedimentation tank (53) in the first phosphorus removing pipeline (9) reaches a standard line, a water inlet valve of the first phosphorus removing pipeline (9) is closed, a water inlet valve on the second phosphorus removing pipeline (10) is opened, the sewage in the sub-sedimentation tank (53) of the first phosphorus removing pipeline (9) waits for precipitation, and the continuously introduced sewage of the mixed phosphorus removing agent enters the second phosphorus removing pipeline (10);
step five: sewage of the mixed phosphorus removing agent is continuously fed into the sub-sedimentation tank (53) and is precipitated in the sub-sedimentation tank (53), when the sewage in the sub-sedimentation tank (53) in the second phosphorus removing pipeline (10) is about to reach a standard line, the sewage in the sub-sedimentation tank (53) in the first phosphorus removing pipeline (9) is completely precipitated, the sewage after primary treatment is pumped out through the intermediate transfer pump (16), and then the sludge pumped into the first sludge inlet pipe (12) is pumped out from the first sludge discharge pipe (13) through the first sludge transfer pump (14);
step six: in the fifth step, the sewage pumped out by the intermediate delivery pump (16) spirally advances by the power which is provided by the third self-spiral delivery mechanism (17) and spirally flows forward;
step seven: the phosphorus removing agent in the second phosphorus removing agent inlet pipe (21) is pumped into the third connecting pipeline (19) through the second phosphorus removing agent outlet pipe (20) by the second phosphorus removing agent conveying pump (22) and is mixed with the sewage which advances spirally, then the phosphorus removing agent and the sewage are further mixed through the fourth self-spiral conveying mechanism (18), and the sewage mixed with the phosphorus removing agent is provided with power for the forward flow of the spiral to enable the sewage to continue to advance spirally and is introduced into the main sedimentation tank (26);
step eight: after the sewage after the primary treatment in the first phosphorus removal pipeline (9) in the step seven enters the main sedimentation tank (26), the sewage in the sub sedimentation tank (53) in the second phosphorus removal pipeline (10) reaches a standard line, a water inlet valve of the second phosphorus removal pipeline (10) is closed, a water inlet valve of the first phosphorus removal pipeline (9) is opened, and water is fed again for sedimentation;
step nine: and seventhly, the sewage entering the main sedimentation tank (26) is subjected to water inlet and sedimentation, the sewage subjected to secondary dephosphorization is discharged through a dephosphorization sewage discharge pipe (27), and the sludge pumped into the second sludge inlet pipe (25) is pumped out from the second sludge discharge pipe (24) by the second sludge conveying pump (23).
2. The adding process of the phosphorus removing agent for domestic sewage according to claim 1, wherein the adding process comprises the following steps: and water inlet, sedimentation, water drainage, sludge discharge and post-treatment steps in the first phosphorus removal pipeline (9) and the second phosphorus removal pipeline (10) are alternately carried out.
3. An adding device of a phosphorus removing agent for domestic sewage, which is based on the adding structure used in the adding process of the phosphorus removing agent for domestic sewage of claim 1, and is characterized in that: the sewage treatment device is characterized in that a sewage inlet pipe (2) is installed at the input end of the sewage delivery pump (1), a sewage outlet pipe (3) is installed at the output end of the sewage delivery pump (1), a first self-spiral conveying mechanism (4) and a second self-spiral conveying mechanism (5) are installed on the sewage outlet pipe (3), a first three-way pipe is installed between the first self-spiral conveying mechanism (4) and the second self-spiral conveying mechanism (5), a first phosphorus removing agent inlet pipe (7) is connected to the other pipe of the first three-way pipe, a first phosphorus removing agent delivery pump (6) is installed at one end, away from the first three-way pipe, of the first phosphorus removing agent inlet pipe (7), a first phosphorus removing agent outlet pipe (8) is installed at the output end of the first phosphorus removing agent delivery pump (6), and a first connecting pipeline (11) on two pipelines, namely a first phosphorus removing pipeline (9) and a second phosphorus removing pipeline (10), is connected to the other end of the sewage outlet pipe (3) through, and the first dephosphorization pipeline (9) and the second dephosphorization pipeline (10) are both provided with a water inlet valve at the beginning, the first dephosphorization pipeline (9) and the second dephosphorization pipeline (10) are respectively provided with a first sludge inlet pipe (12), a first sludge drain pipe (13), a first sludge delivery pump (14), a second connecting pipe (15), a middle delivery pump (16), a third self-spiral delivery mechanism (17), a fourth self-spiral delivery mechanism (18), a third connecting pipe (19) and a sub-sedimentation tank (53), the sub-sedimentation tank (53) is positioned at one end of the first connecting pipe (11) far away from the second three-way pipe, the output end of the first sludge delivery pump (14) is provided with the first sludge drain pipe (13), the input end of the first sludge delivery pump (14) is provided with the first sludge inlet pipe (12), and the first sludge inlet pipe (12) extends to the interior of the sub-sedimentation tank (53), a second connecting pipeline (15) is installed on the other side of the sub-sedimentation tank (53), the installation position of the second connecting pipeline (15) is higher than that of the first connecting pipeline (11), an intermediate conveying pump (16) is installed at the other end of the second connecting pipeline (15), a third connecting pipeline (19) is installed at the output end of the intermediate conveying pump (16), a third self-spiral conveying mechanism (17) and a fourth self-spiral conveying mechanism (18) are installed on the third connecting pipeline (19), a third three-way pipe is installed between the third self-spiral conveying mechanism (17) and the fourth self-spiral conveying mechanism (18), a second phosphorus removing agent outlet pipe (20) is installed on another through pipe of the third three-way pipe, a second phosphorus removing agent conveying pump (22) is installed at one end, far away from the third three-way pipe, of the second phosphorus removing agent outlet pipe (20), and the input end of the second phosphorus removing agent conveying pump (22) is connected with a second phosphorus removing agent inlet pipe (21), total sedimentation tank (26) are installed to the other end of third connecting tube (19), the internally mounted of total sedimentation tank (26) has second mud to advance pipe (25), second mud advances the other end of pipe (25) and installs second sludge transfer pump (23), second mud calandria (24) are installed to the output of second sludge transfer pump (23), dephosphorization sewage discharge pipe (27) are installed to the opposite side of total sedimentation tank (26).
4. The adding device of the phosphorus removal agent for domestic sewage according to claim 3, wherein: the first self-spiral conveying mechanism (4), the second self-spiral conveying mechanism (5), the third self-spiral conveying mechanism (17) and the fourth self-spiral conveying mechanism (18) are internally provided with fixed disks (29), intermediate shafts (30), side spiral plates (33) and intermediate baffle plates (34), the fixed disks (29) are positioned at two sides of the interiors of the first self-spiral conveying mechanism (4), the second self-spiral conveying mechanism (5), the third self-spiral conveying mechanism (17) and the fourth self-spiral conveying mechanism (18), the fixed disks (29) are fixedly connected with the inner walls of the first self-spiral conveying mechanism (4), the second self-spiral conveying mechanism (5), the third self-spiral conveying mechanism (17) and the fourth self-spiral conveying mechanism (18), the side spiral plates (33) are positioned at the inner side of the fixed disks (29), the side spiral plates (33) are provided with a plurality, and the plurality of side spiral plates (33) are arranged in an annular array by taking the center of the fixed disks (29) as a circle center, a plurality of side spiral board (33) spiral sets up, a plurality of side spiral board (33) and the inner wall fixed connection of fixed disk (29), and middle baffle (34) are located the centre of a plurality of side spiral board (33), and middle baffle (34) and side spiral board (33) fixed connection, jackshaft (30) are located two middle baffle (34) in the middle of, and middle baffle (34) are passed through the bearing rotation with jackshaft (30) and are connected.
5. The adding device of the phosphorus removal agent for domestic sewage according to claim 4, wherein: the outer side of the intermediate shaft (30) is provided with a plurality of intermediate sleeves (31), the intermediate sleeves (31) are fixed with the intermediate shaft (30) through key grooves, and the outer side of each intermediate sleeve (31) is fixedly connected with a spiral blade (32).
6. The adding device of the phosphorus removal agent for domestic sewage according to claim 3, wherein: the phosphorus removal device is characterized in that the second phosphorus removal agent inlet pipe (21) on the first phosphorus removal agent inlet pipe (7) and the first phosphorus removal pipeline (9) and the second phosphorus removal pipeline (10) is fixedly connected with a diluted phosphorus removal agent outlet pipe (50), the other end of the diluted phosphorus removal agent outlet pipe (50) is connected with a stirring shell (43), a phosphorus removal sewage branch pipe (28) extends from a phosphorus removal sewage discharge pipe (27), the other end of the phosphorus removal sewage branch pipe (28) is connected with the stirring shell (43), a driving motor (42) is installed at the upper end of the stirring shell (43), and phosphorus removal agent adding pipes (44) are installed at the upper end of the stirring shell (43) along the two sides of the driving motor (42).
7. The adding device of the phosphorus removal agent for domestic sewage according to claim 6, wherein: one end of the dephosphorization sewage branch pipe (28) extends to the inside of the stirring shell (43) and is fixedly connected with the mixing disc (45), the dephosphorization agent adding pipe (44) extends to the inside of the stirring shell (43) and is fixedly connected with the mixing disc (45), the lower end of the mixing disc (45) is provided with a spray header (46), the horizontal position of the spray header (46) is staggered with the horizontal position of the dephosphorization agent adding pipe (44), and the mixing disc (45) and the stirring shell (43) are fixedly connected with an upper connecting column (51) and a side connecting block (52).
8. The adding device of the phosphorus removal agent for domestic sewage according to claim 6, wherein: the output of driving motor (42) is connected with (mixing) shaft (47), a plurality of puddlers (48) are installed to the bilateral symmetry of (mixing) shaft (47), a plurality of stirring branch (49) are installed to the upper and lower both ends symmetry of puddler (48), and stirring branch (49) set up in turn on two adjacent puddlers (48) from top to bottom.
9. The adding device of the phosphorus removal agent for domestic sewage according to claim 3, wherein: a vertical plate (38) is arranged on one side inside the main sedimentation tank (26), the third connecting pipeline (19) extends into a cavity formed by the inner wall of the main sedimentation tank (26) and the vertical plate (38), a water outlet head (37) is arranged on one side of the third connecting pipeline (19), a reinforcing side plate (35) is arranged at the position, opposite to the water outlet head (37), of the inner wall of the main sedimentation tank (26), a speed reduction salient point (36) is fixedly arranged on the reinforcing side plate (35), and an arc-shaped portion (39) is arranged between the lower end of the reinforcing side plate (35) and the lower bottom plate of the main sedimentation tank (26).
10. The adding device of the phosphorus removal agent for domestic sewage according to claim 3, wherein: the lower end of the second sludge inlet pipe (25) is provided with a sludge suction disc (40), and the lower end of the sludge suction disc (40) is provided with a plurality of sludge suction heads (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010666736.8A CN111908580A (en) | 2020-07-13 | 2020-07-13 | Process and device for adding phosphorus removal agent for domestic sewage |
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|---|---|---|---|
| CN202010666736.8A CN111908580A (en) | 2020-07-13 | 2020-07-13 | Process and device for adding phosphorus removal agent for domestic sewage |
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| CN111908580A true CN111908580A (en) | 2020-11-10 |
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| CN202010666736.8A Pending CN111908580A (en) | 2020-07-13 | 2020-07-13 | Process and device for adding phosphorus removal agent for domestic sewage |
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Application publication date: 20201110 |