CN113181686A - Mechanical stirring clarification tank for wastewater treatment - Google Patents
Mechanical stirring clarification tank for wastewater treatment Download PDFInfo
- Publication number
- CN113181686A CN113181686A CN202110583642.9A CN202110583642A CN113181686A CN 113181686 A CN113181686 A CN 113181686A CN 202110583642 A CN202110583642 A CN 202110583642A CN 113181686 A CN113181686 A CN 113181686A
- Authority
- CN
- China
- Prior art keywords
- tank
- rotating shaft
- reaction tank
- sedimentation
- zone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 20
- 238000005352 clarification Methods 0.000 title claims abstract description 19
- 238000010907 mechanical stirring Methods 0.000 title claims abstract description 16
- 238000004062 sedimentation Methods 0.000 claims abstract description 74
- 238000006243 chemical reaction Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005189 flocculation Methods 0.000 claims abstract description 34
- 238000002156 mixing Methods 0.000 claims abstract description 34
- 230000016615 flocculation Effects 0.000 claims abstract description 32
- 239000000701 coagulant Substances 0.000 claims abstract description 12
- 238000010992 reflux Methods 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 8
- 230000014759 maintenance of location Effects 0.000 claims description 8
- 238000013019 agitation Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 abstract description 8
- 239000010865 sewage Substances 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 59
- 229940037003 alum Drugs 0.000 description 18
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920000867 polyelectrolyte Polymers 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010408 sweeping Methods 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
- B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/28—Mechanical auxiliary equipment for acceleration of sedimentation, e.g. by vibrators or the like
- B01D21/286—Means for gentle agitation for enhancing flocculation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and particularly relates to a mechanical stirring clarification tank for wastewater treatment, which comprises a reaction tank, wherein a plurality of first partition plates and second partition plates which are linearly arranged are fixedly arranged in the reaction tank, the first partition plates and the second partition plates are arranged at intervals and divide the reaction tank into a coagulant mixing tank, a magnetic medium mixing tank, a flocculation tank, a flow pushing area and a sedimentation tank which are sequentially communicated, a transverse plate is fixedly arranged at the top of the reaction tank, a first rotating shaft, a second rotating shaft, a third rotating shaft and a fourth rotating shaft are respectively and rotatably arranged in the coagulant mixing tank, the magnetic medium mixing tank, the flocculation tank and the sedimentation tank, the bottom ends of the first rotating shaft, the second rotating shaft and the third rotating shaft are respectively and rotatably provided with a paddle, and a plurality of motors which are linearly arranged are fixedly arranged at the top of the transverse plate. The invention has the advantages of simple flow, stable operation, high automation degree, convenient operation, small occupied area, environmental protection and water resource saving.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a mechanical stirring clarification tank for wastewater treatment.
Background
The clarification tank is a widely applied technology in the field of water treatment, and is a structure which is separated from clear water quickly mainly by mutual contact and adsorption of sludge accumulated in the sedimentation tank and magazine particles in water. The device is divided into a mechanical stirring clarification tank, a hydraulic circulating stirring tank, a pulse clarification tank, a suspension clarification tank and the like according to the principle.
Through retrieval, the novel high-density clarification tank disclosed by the grant publication number CN205461163U provides the defects of small ascending flow rate, large tank body area, large occupied area, low sludge concentration and the like of the existing clarification tank, through a wastewater inlet, a coagulation tank, a flocculation tank, a contact tank, a sedimentation tank, a water outlet and a hydraulic cyclone which are connected in sequence, wherein the wastewater inlet is connected with the coagulation tank, the water outlet is connected with the water outlet tank, the coagulation tank contains a coagulation stirrer, the flocculation tank contains a flocculation stirrer, the contact tank contains a contact stirrer, the sedimentation tank comprises a mud scraper, the micro-sand flow discharged by the overflow of the hydrocyclone is separated, and a part of the mixture enters the contact tank through gravity, so that the sedimentation tank has the advantages of large surface hydraulic load, good flocculation effect, high sludge concentration, capability of effectively reducing the occupied area, improvement on the quality of effluent water and the like.
However, the above-mentioned clarification tank has disadvantages such as a small upward flow velocity, a large tank area, a large floor area, and a low sludge concentration.
Therefore, we have proposed a mechanical agitation clarifier for wastewater treatment to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a mechanical stirring clarification tank for wastewater treatment.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a mechanical stirring clarification tank for waste water treatment, includes the reaction tank, fixed mounting has a plurality of first baffles and the second baffle that are linear arrangement in the reaction tank, and a plurality of first baffles and second baffle interval arrangement and cut apart into coagulant mixing tank, magnetic medium mixing tank, flocculation basin, plug flow district and the sedimentation tank that communicate in proper order with the reaction tank, the top fixed mounting of reaction tank has the diaphragm, rotate respectively in coagulant mixing tank, magnetic medium mixing tank, flocculation basin and the sedimentation tank and install first pivot, second pivot, third pivot and fourth pivot, the paddle is all installed in the bottom of first pivot, second pivot and third pivot to the rotation, the top fixed mounting of diaphragm has a plurality of motors that are linear arrangement, the top of first pivot, second pivot, third pivot and fourth pivot all runs through the diaphragm and is in the same place with the output shaft fixed connection of corresponding motor, the bottom fixed mounting of fourth pivot has the scraper blade, the bottom of scraper blade and the bottom inner wall sliding connection of sedimentation tank, fixed mounting has ramp group and water catch bowl in the sedimentation tank, the water catch bowl is in ramp group's top, one side fixed mounting that the reaction tank is close to the sedimentation tank has the clear water groove, the top of clear water groove and the top parallel and level of sedimentation tank, it is equipped with the draft tube to rotate the cover in the third pivot, the top of draft tube and the bottom fixed connection of diaphragm are in the same place, magnetic medium mixes pond and draft tube and is linked together through the third pipe, the exit end of third pipe is under the third pivot, the third pipe runs through the reaction tank and is in the same place with reaction tank fixed connection.
Preferably, the speed gradient of the first rotating shaft is 300s < -1 > to 1000s < -1 >, the hydraulic retention time is 0.5min to 3min, the speed gradient of the second rotating shaft is 100s < -1 > to 500s < -1 >, and the hydraulic retention time is 1.5min to 3 min.
Preferably, the draft tube comprises an upper straight tube body, three turbulent flow plates and a lower conical tube body, two vertical rods are fixedly mounted at the top of the upper straight tube body, the top ends of the two vertical rods are fixedly connected with the bottom of the transverse plate, a through hole is formed in the inner wall of the top of the upper straight tube body, a third rotating shaft penetrates through the through hole and is rotatably connected with the inner wall of the through hole, the top end of the lower conical tube body is fixedly connected with the bottom end of the upper straight tube body, a plurality of turbulent flow holes which are annularly arranged are formed in the inner wall of the draft tube body, and the three turbulent flow plates are circularly arranged and are fixedly connected with the inner wall of the upper straight tube body.
Preferably, the inclined plate group comprises two rectangular strips and a plurality of rectangular plates, the rectangular plates are all located between the two rectangular strips, the rectangular plates are all arranged in an inclined mode, the rectangular plates are all linearly arranged, and two ends of the rectangular plates are fixedly connected with one side, close to the two rectangular strips, of the two ends of the rectangular plates respectively.
Preferably, the bottom of reaction tank is equipped with magnetic medium sludge reflux unit, magnetic medium sludge reflux unit includes the backwash pump, be equipped with inlet and liquid outlet on the backwash pump, the inlet and the liquid outlet of backwash pump fixed mounting respectively have first pipe and second pipe, first pipe and second pipe all run through the reaction tank and extend to respectively in sedimentation tank and the magnetic medium mixing tank.
Preferably, the bottom of the sedimentation tank is fixedly provided with a thrust zone, and the thrust zone penetrates through the reaction tank and is fixedly connected with the reaction tank.
Preferably, the sedimentation tank comprises a pre-sedimentation area and a sedimentation area, the pre-sedimentation area is positioned between the sedimentation area and the thrust area, the inlet of the thrust area is positioned at the lower part of the side wall close to the magnetic medium mixing tank, and the outlet of the thrust area is positioned at the upper part of the side wall close to the pre-sedimentation area.
Compared with the prior art, the invention has the beneficial effects that:
1. the raw water pre-coagulated by the coagulant mixing tank is introduced into the flocculation tank, the corresponding paddle is used for uniformly mixing water flow in the reaction tank and providing required dynamic energy for flocculation and polyelectrolyte distribution, the plug-flow flocculation tank is used for generating particle-sweeping flocculation to obtain larger floccules and achieve rapid sedimentation in the sedimentation zone, so that the whole flocculation tank can obtain a large amount of high-density and homogeneous alum flocs to meet the requirement of initial design, and the speed of the sedimentation zone is much higher than that of other systems to obtain the high-density alum flocs;
2. alum blossom enters into the sedimentation tank from the flocculation basin at a slow speed, can avoid damaging alum blossom or producing the swirl like this, make a large amount of suspended solid particles at this district uniform deposition certainly, alum blossom is assembled into mud and is concentrated in the sedimentation tank lower part, and the sedimentation tank divide into two-layer in preliminary sedimentation zone and sedimentation zone: the pre-settling zone is positioned at the upper part of the flow pushing zone, the settling zone is positioned below the flow pushing zone, the settling zone is used for concentrating recycled sludge, the residence time of the sludge on the layer is several hours, then the sludge is discharged into the flow pushing zone, the sludge inlet at the upper part of the flow pushing zone is larger, part of the concentrated sludge is discharged from the flow pushing zone and circulates to the inlet of the reaction tank, the lower layer of the flow pushing zone is a place for generating a large amount of concentrated sludge, the concentration of the concentrated sludge is at least 20g/L, the sludge concentration zone is provided with an ultrasonic sludge level control switch for controlling the operation of the sludge pump, ensuring that the concentrated sludge layer is in a controlled range and ensuring the normal operation of the concentration tank. Pumping out residual sludge from the bottom of the sedimentation tank by using a reflux pump, and conveying the residual sludge into a magnetic medium mixing tank for flocculation again;
3. the sedimentation tank settles the residual alum blossom and carries out hydraulic distribution through the inclined plate group fixed on the lower side of the water collecting tank, and the rectangular plates are divided into independent groups to improve the uniform distribution of water flow. It is not necessary to use any preferential channels, so that the reaction precipitation can be carried out in an optimal state. The clarified water is recovered from a water collection tank, the flocculates are accumulated in the lower part of the sedimentation tank, the formed sludge is also concentrated in the area, the sludge is collected by a scraper and circulated to the inlet of the reaction tank, and the residual sludge is discharged.
Drawings
FIG. 1 is a schematic perspective view of a mechanical stirring clarifier for wastewater treatment according to the present invention;
FIG. 2 is a schematic sectional view of a mechanical stirring clarifier for wastewater treatment according to the present invention;
FIG. 3 is a schematic perspective sectional view of a draft tube in a mechanical stirring clarifier for wastewater treatment according to the present invention;
FIG. 4 is a schematic perspective view of a swash plate assembly in a mechanical mixer clarifier for wastewater treatment according to the present invention;
fig. 5 is a schematic perspective view of a paddle in a mechanical stirring clarifier for wastewater treatment according to the present invention.
In the figure: 1. a reaction tank; 2. a first separator; 3. a second separator; 4. a coagulant mixing tank; 5. a magnetic medium mixing tank; 6. a flocculation tank; 7. a sedimentation tank; 8. a transverse plate; 9. a first rotating shaft; 10. a second rotating shaft; 11. a third rotating shaft; 12. a paddle; 13. a draft tube; 1301. an upper straight cylinder body; 1302. a lower conical cylinder; 1303. a turbulent flow plate; 1304. a turbulence hole; 14. a third conduit; 15. a motor; 16. a squeegee; 17. a swash plate group; 1701. a rectangular strip; 1702. a rectangular plate; 18. a water collection tank; 19. a clear water tank; 20. a plug flow area; 21. a magnetic medium sludge reflux device; 22. and a fourth rotating shaft.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present embodiment provides a mechanical stirring clarification tank for wastewater treatment, which comprises a reaction tank 1, wherein a plurality of first partition plates 2 and second partition plates 3 arranged in a linear manner are fixedly installed in the reaction tank 1, the plurality of first partition plates 2 and second partition plates 3 are arranged at intervals and divide the reaction tank 1 into a coagulant mixing tank 4, a magnetic medium mixing tank 5, a flocculation tank 6, a plug flow zone 20 and a sedimentation tank 7 which are sequentially communicated, a horizontal plate 8 is fixedly installed at the top of the reaction tank 1, a first rotating shaft 9, a second rotating shaft 10, a third rotating shaft 11 and a fourth rotating shaft 22 are respectively rotatably installed in the coagulant mixing tank 4, the magnetic medium mixing tank 5, the flocculation tank 6 and the sedimentation tank 7, a paddle 12 is rotatably installed at the bottom ends of the first rotating shaft 9, the second rotating shaft 10 and the third rotating shaft 11, a plurality of motors 15 arranged in a linear manner are fixedly installed at the top of the horizontal plate 8, a first rotating shaft 9, a second rotating shaft 10, the top of third pivot 11 and fourth pivot 22 all runs through diaphragm 8 and is in the same place with the output shaft fixed connection of the motor 15 that corresponds, the bottom fixed mounting of fourth pivot 22 has scraper blade 16, the bottom of scraper blade 16 and the bottom inner wall sliding connection of sedimentation tank 7, fixed mounting has ramp group 17 and water catch bowl 18 in the sedimentation tank 7, water catch bowl 18 is in the top of ramp group 17, one side fixed mounting that reaction tank 1 is close to sedimentation tank 7 has clear water groove 19, the top of clear water groove 19 and the top parallel and level of sedimentation tank 7, it is equipped with draft tube 13 to rotate the cover on the third pivot 11, the top of draft tube 13 and the bottom fixed connection of diaphragm 8 are in the same place, magnetic medium mixing tank 5 and draft tube 13 are linked together through third pipe 14, the exit end of third pipe 14 is under third pivot 11, third pipe 14 runs through reaction tank 1 and is in the same place with reaction tank 1 fixed connection.
When the device works, raw water which is pre-coagulated by the coagulant mixing tank 4 is introduced into the flocculation tank 6, the corresponding paddle 12 is used for uniformly mixing water flow in the reaction tank 1 and providing required kinetic energy for flocculation and polyelectrolyte distribution, and the plug-flow flocculation tank 6 is used for generating particle-sweeping flocculation so as to obtain larger floccules and achieve rapid sedimentation in a sedimentation zone. Therefore, a large amount of high-density and homogeneous alum flocs can be obtained from the whole flocculation tank 6 to meet the requirements of the original design. The speed of the settling zone should be much faster than the speed of other systems to obtain high density alum; alum blossom enters the sedimentation tank 7 from the flocculation tank 6 slowly, so that the alum blossom can be prevented from being damaged or generating vortex, a large amount of suspended solid particles are ensured to be uniformly deposited in the area, the alum blossom is converged into sludge and concentrated at the lower part of the sedimentation tank 7, and the sedimentation tank 7 is divided into two layers of a pre-sedimentation area and a sedimentation area: the pre-settling zone is positioned at the upper part of the flow pushing zone 20, the settling zone is positioned below the flow pushing zone 20, the settling zone is used for concentrating recycled sludge, the retention time of the sludge on the layer is several hours, then the sludge is discharged into the flow pushing zone 20, the sludge inlet at the upper part of the flow pushing zone 20 is larger, part of the concentrated sludge is discharged from the flow pushing zone 20 and circulates to the inlet of the reaction tank 1, the lower layer of the flow pushing zone is a place for generating a large amount of concentrated sludge, the concentration of the concentrated sludge is at least 20g/L (gram to liter) of a clarification process, and the sludge concentration zone is provided with an ultrasonic sludge level control switch and is used for controlling the operation of a sludge pump, ensuring that the concentrated sludge layer is in a controlled range and ensuring the normal operation of the concentration tank. Pumping out residual sludge from the bottom of the sedimentation tank 7 by using a reflux pump, and conveying the residual sludge into the magnetic medium mixing tank 5 for re-flocculation; the sedimentation basin 7 settles the remaining alum flocs and distributes them hydraulically by means of inclined plate groups 17 fixed to the lower side of the water collection tank 18, and these rectangular plates 1702 are divided into separate groups to improve the uniform distribution of the water flow. It is not necessary to use any preferential channels, so that the reaction precipitation can be carried out in an optimal state. The clarified water is recovered by a collecting tank 18, the flocculates are deposited in the lower part of the sedimentation tank 7, the sludge formed is concentrated in this part, the sludge is collected by the scraper 16 and recycled to the inlet of the reaction tank 1, the excess sludge is discharged
As an embodiment of the invention, the velocity gradient of the first rotating shaft 9 is 300s < -1 > to 1000s < -1 >, the hydraulic retention time is 0.5min to 3min, the velocity gradient of the second rotating shaft 10 is 100s < -1 > to 500s < -1 >, and the hydraulic retention time is 1.5min to 3 min.
As an embodiment of the invention, the guide cylinder 13 comprises an upper straight cylinder 1301, three turbulent flow plates 1303 and a lower conical cylinder 1302, two vertical rods are fixedly mounted at the top of the upper straight cylinder 1301, the top ends of the two vertical rods are fixedly connected with the bottom of the transverse plate 8, a through hole is formed in the inner wall of the top of the upper straight cylinder 1301, a third rotating shaft 11 penetrates through the through hole and is rotatably connected with the inner wall of the through hole, the top end of the lower conical cylinder 1302 is fixedly connected with the bottom end of the upper straight cylinder 1301, a plurality of turbulent flow holes 1304 arranged in a ring shape are formed in the inner wall of the guide cylinder 13, and the three turbulent flow plates 1303 are circularly arranged and are fixedly connected with the inner wall of the upper straight cylinder 1301.
As an embodiment of the present invention, the inclined plate group 17 includes two rectangular bars 1701 and a plurality of rectangular plates 1702, the plurality of rectangular plates 1702 are each located between the two rectangular bars 1701, the plurality of rectangular plates 1702 are each disposed in an inclined manner, the plurality of rectangular plates 1702 are each arranged linearly, and both ends of the plurality of rectangular plates 1702 are respectively fixedly connected to a side where the two rectangular bars 1701 are close to each other.
As an implementation mode of the invention, the magnetic medium sludge reflux device 21 is arranged at the bottom of the reaction tank 1, the magnetic medium sludge reflux device 21 comprises a reflux pump, a liquid inlet and a liquid outlet are arranged on the reflux pump, a first conduit and a second conduit are respectively and fixedly arranged on the liquid inlet and the liquid outlet of the reflux pump, and both the first conduit and the second conduit penetrate through the reaction tank 1 and respectively extend into the sedimentation tank 7 and the magnetic medium mixing tank 5.
As an embodiment of the invention, the bottom of the sedimentation tank 7 is fixedly provided with a thrust zone 20, and the thrust zone 20 penetrates through the reaction tank 1 and is fixedly connected with the reaction tank 1.
As an embodiment of the invention, the sedimentation tank 7 comprises a pre-sedimentation zone and a sedimentation zone, the pre-sedimentation zone is positioned between the sedimentation zone and the plug flow zone 20, the inlet of the plug flow zone 20 is positioned at the lower part of the side wall close to the magnetic medium mixing tank 5, and the outlet of the plug flow zone 20 is positioned at the upper part of the side wall close to the pre-sedimentation zone.
In this embodiment, the raw water pre-coagulated by the coagulant mixing tank 4 is introduced into the flocculation tank 6, the corresponding paddle 12 is used to uniformly mix the water flow in the reaction tank 1 and provide the required kinetic energy for flocculation and polyelectrolyte distribution, and the push-flow flocculation tank 6 is used to generate particle-sweeping flocculation to obtain larger floccules and achieve rapid sedimentation in the sedimentation zone. Therefore, a large amount of high-density and homogeneous alum flocs can be obtained from the whole flocculation tank 6 to meet the requirements of the original design. The speed of the settling zone should be much faster than the speed of other systems to obtain high density alum;
alum blossom enters the sedimentation tank 7 from the flocculation tank 6 slowly, so that the alum blossom can be prevented from being damaged or generating vortex, a large amount of suspended solid particles are ensured to be uniformly deposited in the area, the alum blossom is converged into sludge and concentrated at the lower part of the sedimentation tank 7, and the sedimentation tank 7 is divided into two layers of a pre-sedimentation area and a sedimentation area: the pre-settling zone is positioned at the upper part of the flow pushing zone 20, the settling zone is positioned below the flow pushing zone 20, the settling zone is used for concentrating recycled sludge, the retention time of the sludge on the layer is several hours, then the sludge is discharged into the flow pushing zone 20, the sludge inlet at the upper part of the flow pushing zone 20 is larger, part of the concentrated sludge is discharged from the flow pushing zone 20 and circulates to the inlet of the reaction tank 1, the lower layer of the flow pushing zone is a place for generating a large amount of concentrated sludge, the concentration of the concentrated sludge is at least 20g/L, and the sludge concentration zone is provided with an ultrasonic sludge level control switch and is used for controlling the operation of a sludge pump, ensuring that the concentrated sludge layer is in a controlled range and ensuring the normal operation of the concentration tank. Pumping out residual sludge from the bottom of the sedimentation tank 7 by using a reflux pump, and conveying the residual sludge into the magnetic medium mixing tank 5 for re-flocculation;
the sedimentation basin 7 settles the remaining alum flocs and distributes them hydraulically by means of inclined plate groups 17 fixed to the lower side of the water collection tank 18, and these rectangular plates 1702 are divided into separate groups to improve the uniform distribution of the water flow. It is not necessary to use any preferential channels, so that the reaction precipitation can be carried out in an optimal state. The clarified water is recovered by a collection sump 18, the flocs are deposited in the lower part of the sedimentation basin 7, the sludge formed is also concentrated in this part, the sludge is collected by the scraper 16 and recycled to the inlet of the reaction basin 1, and the excess sludge is discharged.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The utility model provides a mechanical stirring clarification tank for waste water treatment, includes reaction tank (1), its characterized in that, fixed mounting has a plurality of first baffle (2) and the second baffle (3) that are linear arrangement in reaction tank (1), and a plurality of first baffle (2) and second baffle (3) interval arrangement and cut apart into coagulant mixing tank (4), magnetic medium mixing tank (5), flocculation basin (6), plug flow district (20) and sedimentation tank (7) that communicate in proper order with reaction tank (1), the top fixed mounting of reaction tank (1) has diaphragm (8), rotate respectively in coagulant mixing tank (4), magnetic medium mixing tank (5), flocculation basin (6) and sedimentation tank (7) and install first pivot (9), second pivot (10), third pivot (11) and fourth pivot (22), the bottom paddle of first pivot (9), second pivot (10) and third pivot (11) all rotates and installs (12), the top of the transverse plate (8) is fixedly provided with a plurality of motors (15) which are linearly arranged, the top ends of the first rotating shaft (9), the second rotating shaft (10), the third rotating shaft (11) and the fourth rotating shaft (22) all penetrate through the transverse plate (8) and are fixedly connected with output shafts of the corresponding motors (15), the bottom end of the fourth rotating shaft (22) is fixedly provided with a scraper (16), the bottom of the scraper (16) is slidably connected with the inner wall of the bottom of the sedimentation tank (7), an inclined plate group (17) and a water collection tank (18) are fixedly arranged in the sedimentation tank (7), the water collection tank (18) is positioned above the inclined plate group (17), one side of the reaction tank (1) close to the sedimentation tank (7) is fixedly provided with a clear water tank (19), the top of the clear water tank (19) is flush with the top of the sedimentation tank (7), and a guide cylinder (13) is rotatably sleeved on the third rotating shaft (11), the top of the guide shell (13) is fixedly connected with the bottom of the transverse plate (8), the magnetic medium mixing tank (5) is communicated with the guide shell (13) through a third conduit (14), the outlet end of the third conduit (14) is positioned under a third rotating shaft (11), and the third conduit (14) penetrates through the reaction tank (1) and is fixedly connected with the reaction tank (1).
2. The mechanical stirring clarification tank for wastewater treatment according to claim 1, characterized in that the velocity gradient of the first rotating shaft (9) is 300s "1 to 1000 s" 1, the hydraulic retention time is 0.5min to 3min, the velocity gradient of the second rotating shaft (10) is 100s "1 to 500 s" 1, and the hydraulic retention time is 1.5min to 3 min.
3. The mechanical agitation clarifier for wastewater treatment according to claim 1, the guide shell (13) comprises an upper straight cylinder body (1301), three turbulent plates (1303) and a lower conical cylinder body (1302), the top of the upper straight cylinder body (1301) is fixedly provided with two vertical rods, the top ends of the two vertical rods are fixedly connected with the bottom of the transverse plate (8), a through hole is arranged on the inner wall of the top part of the upper straight cylinder body (1301), the third rotating shaft (11) penetrates through the through hole and is rotationally connected with the inner wall of the through hole, the top end of the lower conical cylinder body (1302) is fixedly connected with the bottom end of the upper straight cylinder body (1301), the inner wall of the guide shell (13) is provided with a plurality of turbulence holes (1304) which are annularly arranged, and the three turbulence plates (1303) are circularly arranged and fixedly connected with the inner wall of the upper straight cylinder body (1301).
4. A mechanical mixer settler for wastewater treatment according to claim 1, characterized in that said inclined plate group (17) comprises two rectangular bars (1701) and a plurality of rectangular plates (1702), each of said plurality of rectangular plates (1702) is located between said two rectangular bars (1701), each of said plurality of rectangular plates (1702) is disposed in an inclined manner, each of said plurality of rectangular plates (1702) is linearly arranged, and both ends of each of said plurality of rectangular plates (1702) are fixedly connected to the side of said two rectangular bars (1701) adjacent to each other.
5. The mechanical stirring clarification tank for wastewater treatment according to claim 1, characterized in that, the bottom of reaction tank (1) is equipped with magnetic medium mud reflux unit (21), magnetic medium mud reflux unit (21) includes the backwash pump, be equipped with inlet and liquid outlet on the backwash pump, the inlet and the liquid outlet of backwash pump fixed mounting respectively have first pipe and second pipe, first pipe and second pipe all run through reaction tank (1) and extend to respectively in sedimentation tank (7) and the magnetic medium mixing tank (5).
6. A mechanical stirring clarification tank for wastewater treatment according to claim 1, characterized in that the bottom of the sedimentation tank (7) is fixedly provided with a thrust zone (20), and the thrust zone (20) penetrates through the reaction tank (1) and is fixedly connected with the reaction tank (1).
7. A mechanical agitation clarifier for wastewater treatment according to claim 1, wherein the clarifier (7) comprises a pre-settling zone and a settling zone, the pre-settling zone is located between the settling zone and the thrust zone (20), the inlet of the thrust zone (20) is located near the lower portion of the sidewall of the magnetic medium mixing tank (5), and the outlet of the thrust zone (20) is located near the upper portion of the sidewall of the pre-settling zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110583642.9A CN113181686A (en) | 2021-05-27 | 2021-05-27 | Mechanical stirring clarification tank for wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110583642.9A CN113181686A (en) | 2021-05-27 | 2021-05-27 | Mechanical stirring clarification tank for wastewater treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113181686A true CN113181686A (en) | 2021-07-30 |
Family
ID=76985368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110583642.9A Pending CN113181686A (en) | 2021-05-27 | 2021-05-27 | Mechanical stirring clarification tank for wastewater treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113181686A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790064A (en) * | 2022-05-27 | 2022-07-26 | 杭州钰龙环境科技有限公司 | Raw water manganese and iron removal treatment system and working method thereof |
| CN116425291A (en) * | 2023-06-08 | 2023-07-14 | 四川发展环境科学技术研究院有限公司 | Intensive tap water treatment process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050115907A1 (en) * | 2002-03-19 | 2005-06-02 | Taylor David J.B. | Dual zone feedwell for a thickener |
| CN101874943A (en) * | 2009-04-30 | 2010-11-03 | 得利满水处理系统(北京)有限公司 | High-density clarifying tank |
| CN102659227A (en) * | 2012-05-03 | 2012-09-12 | 绍兴市制水有限公司曹娥江分公司 | Middle-set type high density sediment water purification tank and purification technology thereof |
| CN111170546A (en) * | 2020-01-13 | 2020-05-19 | 蓝深集团股份有限公司 | High-density clarification tank |
-
2021
- 2021-05-27 CN CN202110583642.9A patent/CN113181686A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050115907A1 (en) * | 2002-03-19 | 2005-06-02 | Taylor David J.B. | Dual zone feedwell for a thickener |
| CN101874943A (en) * | 2009-04-30 | 2010-11-03 | 得利满水处理系统(北京)有限公司 | High-density clarifying tank |
| CN102659227A (en) * | 2012-05-03 | 2012-09-12 | 绍兴市制水有限公司曹娥江分公司 | Middle-set type high density sediment water purification tank and purification technology thereof |
| CN111170546A (en) * | 2020-01-13 | 2020-05-19 | 蓝深集团股份有限公司 | High-density clarification tank |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114790064A (en) * | 2022-05-27 | 2022-07-26 | 杭州钰龙环境科技有限公司 | Raw water manganese and iron removal treatment system and working method thereof |
| CN114790064B (en) * | 2022-05-27 | 2024-02-02 | 杭州钰龙环境科技有限公司 | Raw water manganese and iron removal treatment system and working method thereof |
| CN116425291A (en) * | 2023-06-08 | 2023-07-14 | 四川发展环境科学技术研究院有限公司 | Intensive tap water treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205774033U (en) | A kind of compound efficient depositing reservoir | |
| CN102659227B (en) | Middle-set type high density sediment water purification tank and purification technology thereof | |
| EP2508483B1 (en) | Waste water treatment equipment | |
| CN113181686A (en) | Mechanical stirring clarification tank for wastewater treatment | |
| KR101701253B1 (en) | A Circular Sludge Collector Using Rapid Coagulation and Sedimentation | |
| CN211025241U (en) | High density precipitation equipment | |
| CN108328786B (en) | Water treatment device and water treatment method | |
| CN101874943A (en) | High-density clarifying tank | |
| CN201309852Y (en) | Sewage purification precipitator | |
| CN210313791U (en) | Flocculation sedimentation tank device for industrial sewage treatment | |
| CN209098440U (en) | A kind of small-sized integrated countryside sewage treatment equipment of double iris types | |
| CN101530681A (en) | Seawater clarifier turbulence construction and clarifier thereof | |
| CN109293079B (en) | Low-energy-consumption aeration circulation clarification tank | |
| CN216639117U (en) | Floc reflocculation suspension filter equipment | |
| CN115608009A (en) | Assembled secondary sedimentation tank and sewage treatment equipment | |
| CN107149798A (en) | Efficient hydrodynamic clarifies clarifier | |
| CN102849834A (en) | Chemical reaction-precipitation integrated treatment method and chemical reaction-precipitation integrated treatment device | |
| CN202961995U (en) | Hydraulic jet clarifier realizing automatic adjustment | |
| KR960014040B1 (en) | Clarifier installed in the aeration tank for wastewater treatment | |
| CN219603336U (en) | High-efficient sedimentation tank system of sewage treatment | |
| CN103861334A (en) | Hydraulic jet clarifier realizing automatic adjustment | |
| CN2331404Y (en) | Equipment for realizing reaction, preformed precipitate and precipitate technology of wate treatment | |
| CN205007660U (en) | A top is circle pipe chute mechanical stirring clarification membrane down for advanced waste treatment | |
| CN203625097U (en) | Efficient clarification tank | |
| CN211972079U (en) | Hydrolysis acidification reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210730 |
|
| RJ01 | Rejection of invention patent application after publication |