CN220056495U - Medium-sized stirring type baffle coagulating sedimentation tank - Google Patents

Medium-sized stirring type baffle coagulating sedimentation tank Download PDF

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Publication number
CN220056495U
CN220056495U CN202320835363.1U CN202320835363U CN220056495U CN 220056495 U CN220056495 U CN 220056495U CN 202320835363 U CN202320835363 U CN 202320835363U CN 220056495 U CN220056495 U CN 220056495U
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sedimentation tank
partition wall
lattice
overturning
room
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CN202320835363.1U
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罗瑞
李军涛
高天雷
崔宁利
景乔
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Huating Coal Industry Group Co ltd
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Huating Coal Industry Group Co ltd
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Abstract

The utility model relates to a medium-sized flip-type baffle coagulating sedimentation tank, which comprises: a sedimentation tank housing and a partition wall unit; the sedimentation tank shell is a box-type structure body; the partition wall unit is arranged in the sedimentation tank body and used for dividing the sedimentation tank body into a plurality of continuous communicated space lattices; the communication ports on the partition walls of the space grids are arranged vertically in a staggered mode, so that sewage can vertically tumble and flow through the plurality of continuous communicated space grids, and the sewage is discharged into the inclined tube sedimentation tank for further treatment. The coagulating sedimentation tank provided by the utility model not only saves civil engineering construction, but also saves mechanical stirring equipment; because the fluid is adopted to turn up and down, the medicine and the water are mixed more fully, a pipeline mixer and other reaction devices are not needed, the alum flocs formed when the water flow reaches the fourth grid of the coagulation tank are larger, and the alum flocs are easier to settle in the inclined tube sedimentation tank.

Description

Medium-sized stirring type baffle coagulating sedimentation tank
Technical Field
The utility model belongs to the technical field of water treatment coagulating sedimentation tanks, and particularly relates to a medium-sized flip type baffle coagulating sedimentation tank.
Background
The effluent of the sewage treatment device firstly enters an adjusting tank (V=921 m < 3 >) of a sewage recycling device, a Roots blower is arranged as an air stirring device in the tank, so that the incoming water is fully and uniformly mixed, the water quality and the water quantity are adjusted, then the incoming water is conveyed to an oxidation tank by an adjusting tank lifting pump (three pumps are 2 for 1), hydrogen peroxide, ferrous sulfate and sulfuric acid are added at the inlet of the oxidation tank, COD is further removed, the effluent of the oxidation tank gravity flows to a coagulation tank, PAC, PAM, liquid alkali and lime milk are added according to the quantity of calcium ions in the water at the inlet of the coagulation tank. The effluent of the coagulation tank enters a chute sedimentation tank to further remove suspended matters, partial silicate and the like in the water, the turbidity requirement of the effluent of the chute tank is less than 5NTU, sulfuric acid is added at a water distribution tank of the chute tank to ensure that the PH of the effluent of the chute tank is between 7.0 and 8.0, the effluent of the chute tank enters an intermediate tank 1 (V=614 m < 3 >), the intermediate tank 1 is lifted by a pump (three pumps, 2 pumps are provided for 1) to be sent into a multi-medium filter (9 pumps), the suspended matters in the water are further removed, the turbidity of the effluent of the multi-medium filter is less than 3NTU, the effluent enters a self-cleaning filter, the filtration precision is 100 mu m, the filtration precision of the large-flux filter is 75 mu m, the effluent of the large-flux filter enters an ultrafiltration device, and the turbidity requirement of the ultrafiltration effluent is less than 0.5NTU. The design water inflow of the coagulation pool is 250m 3 And/h, the problems of short hydraulic retention time, high water flow speed, insufficient coagulation reaction with the medicament and the like occur in daily operation, flocculation or sludge floating in the inclined tube sedimentation tank is easy to occur, and the water suspension of the effluent is increased and enters the subsequent filter and ultrafiltration membrane treatment equipmentThe visual display is that the water inlet and outlet pressure difference is increased, the water yield is rapidly reduced, and the operation period is shortened. In actual operation, the water treatment quantity is less than 200m 3 And/h, as shown in the schematic diagram of the inflow and outflow water flow of the coagulation inclined tube sedimentation tank in figure 1. The original design of the coagulation tank is 6.1 m long, 2.3 m wide and 6m deep, two partition walls are arranged, the distance between the partition walls is about 2 m, the distance between the partition walls and the edge of the tank body is 0.7 m, and sewage entering the coagulation tank flows horizontally in a curved string shape, as shown in the schematic diagram of the original design water flow direction of the coagulation tank in fig. 2.
Disclosure of Invention
First, the technical problem to be solved
Aiming at the existing technical problems, the utility model provides a medium-sized tumbling-type baffle coagulating sedimentation tank, which solves the problems of short hydraulic retention time, high water flow speed, insufficient coagulating reaction and the like in daily operation of the existing coagulating tank, and causes the situation that floc alum or sludge floats upwards easily in the inclined tube sedimentation tank.
(II) technical scheme
In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:
a medium-sized flip-type baffle coagulation sedimentation tank, comprising: a sedimentation tank housing and a partition wall unit;
the sedimentation tank shell is a box-type structure body;
the partition wall unit is arranged in the sedimentation tank body and used for dividing the sedimentation tank body into a plurality of continuous communicated space lattices;
the communication ports on the partition walls of the space grids are arranged vertically in a staggered mode, so that sewage can vertically tumble and flow through the plurality of continuous communicated space grids, and the sewage is discharged into the inclined tube sedimentation tank for further treatment.
Preferably, the partition wall unit includes: a first partition wall, a second partition wall, and a third partition wall;
the first partition wall and the second partition wall are fixedly arranged in the sedimentation tank shell side by side and are used for dividing the interior of the sedimentation tank shell into a first turnup lattice room, a second turnup lattice room and a third turnup lattice room;
the third partition wall is arranged in the third overturning lattice and is used for dividing the third overturning lattice into a fourth overturning lattice and a fifth overturning lattice.
Preferably, the first turnup lattice room, the second turnup lattice room, the fourth turnup lattice room and the fifth turnup lattice room are communicated in sequence;
the first overturning lattice room, the second overturning lattice room, the fourth overturning lattice room and the fifth overturning lattice room are arranged in a vertically staggered mode through communication ports, and sewage can vertically overturn and flow through the plurality of continuous communicated space lattices.
Preferably, the bottoms of the first turnup lattice, the second turnup lattice, the fourth turnup lattice and the fifth turnup lattice are all connected with mud pipes.
Preferably, the mud discharging pipes are all connected with a mud discharging main pipe;
the mud discharging main pipe is connected with a pipeline mixer;
the pipeline mixer can add the anionic polyacrylamide to the sludge in the sludge discharge main pipe.
Preferably, a sewage inlet is arranged on the top of the sedimentation tank shell where the first turnup room is located, so as to inject sewage to be treated into the first turnup room in the sedimentation tank shell.
Preferably, a water outlet is arranged on the top of the sedimentation tank shell in the fifth turnup room, so as to discharge sewage after the turnup treatment into the inclined tube sedimentation tank.
Preferably, a dosing port is arranged on the top of the sedimentation tank shell in the second turnup room, so as to add anionic polyacrylamide into the second turnup room.
Preferably, the first partition wall, the second partition wall and the third partition wall are all made of steel plates with the thickness of 10 mm;
the bottom of the first partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter;
the top of the second partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter;
the bottom of the third partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter.
(III) beneficial effects
The beneficial effects of the utility model are as follows:
the utility model utilizes the original coagulation pool body to save civil engineering construction and mechanical stirring equipment; because the fluid is adopted to turn up and down, the medicine and the water are mixed more fully, a pipeline mixer and other reaction equipment are not needed, the alum flocs formed when the water flow reaches the fourth grid of the coagulation tank are larger, and the alum flocs are easier to settle in the inclined tube sedimentation tank; the water treatment quantity is changed from 200m 3 Increase/h to 400m 3 And the water quality of the effluent can still be kept better during/h, the water quality change of the wastewater in the coal chemical industry can be better adapted, and the transformation effect is obvious.
Drawings
Fig. 1: a water inflow and outflow flow diagram of a coagulating sedimentation tank in the background technology;
fig. 2: a water flow direction schematic diagram is designed for the original coagulation pool in the background technology;
fig. 3: the baffle structure schematic diagram of the medium-sized flip baffle coagulating sedimentation tank is provided by the utility model;
fig. 4: the utility model provides a water flow direction schematic diagram of a medium-sized flip-type baffle plate coagulating sedimentation tank.
[ reference numerals description ]
1: a first flipping compartment; 2: a second turnup compartment; 3: fourth turnup room; 4: fifth turnup room;
Detailed Description
The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.
Example 1
As shown in fig. 3 and 4: the embodiment discloses a medium-sized roll-over type baffle coagulating sedimentation tank, includes: sedimentation tank casing and partition wall unit. The sedimentation tank shell is a box-type structure body; the partition wall unit is arranged in the sedimentation tank body and used for dividing the sedimentation tank body into a plurality of continuous communicated space lattices; the communication ports on the partition walls of the space grids are arranged vertically in a staggered mode, so that sewage can vertically tumble and flow through the plurality of continuous communicated space grids, and the sewage is discharged into the inclined tube sedimentation tank for further treatment.
The partition wall unit in this embodiment includes: a first partition wall, a second partition wall, and a third partition wall; the first partition wall and the second partition wall are fixedly arranged in the sedimentation tank shell side by side and are used for dividing the interior of the sedimentation tank shell into a first rollover lattice room 1, a second rollover lattice room 2 and a third rollover lattice room. The third partition wall is arranged in the third rollover lattice and is used for dividing the third rollover lattice into a fourth rollover lattice 3 and a fifth rollover lattice 4.
In this embodiment, the first lifting lattice room 1, the second lifting lattice room 2, the fourth lifting lattice room 3 and the fifth lifting lattice room 4 are sequentially connected; the communication ports between the first lifting lattice room 1, the second lifting lattice room 2, the fourth lifting lattice room 3 and the fifth lifting lattice room 4 are arranged in a vertically staggered mode, and are used for enabling sewage to vertically lift and flow through the plurality of continuous and communicated space lattices.
In this embodiment, the bottoms of the first lifting lattice 1, the second lifting lattice 2, the fourth lifting lattice 3 and the fifth lifting lattice 4 are all connected with a mud pipe.
In the embodiment, the mud discharging pipes are all connected with a mud discharging main pipe; the mud discharging main pipe is connected with a pipeline mixer; the pipeline mixer can add the anionic polyacrylamide to the sludge in the sludge discharge main pipe.
In this embodiment, a sewage inlet is provided on the top of the sedimentation tank housing where the first turnup compartment 1 is located, so as to inject sewage to be treated into the first turnup compartment 1 in the sedimentation tank housing.
In this embodiment, a water outlet is provided on the top of the sedimentation tank housing of the fifth turnup compartment 4, so as to drain the sewage after the turnup treatment into the inclined tube sedimentation tank.
In this embodiment, a dosing port is provided on the top of the sedimentation tank housing of the second turnup compartment 2, so as to add anionic polyacrylamide into the second turnup compartment 2.
In this embodiment, the first partition wall, the second partition wall and the third partition wall are all made of steel plates with thickness of 10 mm; the bottom of the first partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter; the top of the second partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter; the bottom of the third partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter.
Example two
In this embodiment, a medium-sized flip-type baffle coagulation sedimentation tank is provided, as shown in fig. 3, and includes a first, a second and a third partition walls. The partition board is made of a steel plate with the thickness of 10mm, the bottom of the first partition board of the coagulation tank is provided with a port with the height of 1 meter and the width of 0.7 meter, and the upper part of the first partition board is completely blocked; the lower part of the second partition wall is fully plugged, and the top is provided with a port with the height of 1 meter and the width of 0.7 meter; a third partition wall is arranged at the water outlet of the coagulation pool, a port with the height of 1 meter and the width of 0.7 meter is reserved at the bottom, and the upper part is completely blocked.
According to the medium-sized flip-type baffle coagulating sedimentation tank provided by the embodiment, as shown in fig. 4, the original curvy-type flowing coagulating tank is changed into a vertical flip-type flowing coagulating tank, the flow direction of water flow is changed, the path is prolonged, so that the hydraulic retention time is increased, the water flow speed is slowed down, the coagulating reaction is more complete, and the better effluent quality is obtained.
According to the medium-sized turnup type baffle coagulating sedimentation tank provided by the embodiment, aluminum chloride is added to a water inlet of a first turnup compartment 1 of the coagulating tank, as shown in fig. 4, water flows vertically downwards in the first turnup compartment 1 of the coagulating tank to enter a second turnup compartment 2, water flows vertically upwards in the second turnup compartment 2 to enter a fourth turnup compartment 3, meanwhile, anionic polyacrylamide is added to the second turnup compartment 2, water flows vertically downwards in the fourth turnup compartment 3 to enter a fifth turnup compartment 4, and water flows into the inclined tube sedimentation tank through a water outlet.
The middle-sized stirring type baffle coagulating sedimentation tank provided in the embodiment has the advantages that the original mud discharging pipe and the original mud discharging mode at the bottom of the coagulating sedimentation tank are unchanged. The pipeline mixer is added on the sludge discharging main pipe, the anionic polyacrylamide is added in the pipeline mixer, the anionic polyacrylamide is added in the dosing port of the pipeline mixer when the sludge is discharged each time in the coagulating sedimentation tank, a large amount of supernatant can be formed in the sludge tank, and the volume of the sludge tank can be effectively saved after the supernatant is returned to the system. Meanwhile, the concentrated sludge is easier to be dehydrated by a filter press.
Example III
Two partition walls originally designed in the coagulation tank are modified, and the dosing point is modified, so that the added flocculating agent enters a channel between the upper and lower turnups through water flow which is fully mixed, the relative movement and mutual collision of particles in the water flow are increased in the coagulation tank, the utilization rate of input energy and the volume utilization rate are effectively improved, the flocculation time is shortened, the sedimentation performance of flocculating bodies is improved, and the flocculation effect is achieved.
And a pipeline mixer and a PAM flocculant dosing point are added on a sludge discharge pipeline of the inclined tube sedimentation tank, discharged sludge is concentrated, supernatant of the sludge tank is returned to the coagulation tank, and concentrated sludge is conveyed into a plate-and-frame filter press through a sludge screw pump, so that researches are carried out on the aspects of improving the sludge filter pressing efficiency and the like. The method comprises the steps of preparing solutions of anionic PAM and cationic PAM according to the concentration of 1 per mill, taking 200ml of sludge sample discharged from a tube sedimentation tank in two beakers, respectively adding 1ml of the anionic PAM and the cationic PAM, adding the PAM solution, stirring for 30 seconds, precipitating for 5 minutes, adding more than 4ml of the solution, wherein the sludge has obvious muddy water dividing line, the volume of floccule particles becomes large after the sludge is settled, and the settling effect is best when the solution is added to 6ml, and is better than that of the cationic PAM. Anionic PAM with the concentration of 1 per mill is added into a sludge sample discharged from a 200ml inclined tube sedimentation tank, and the optimal dosage is 6ml.
By adopting the principle of the vertical flow tumbling coagulation tank, the original design of the curved horizontal flow coagulation tank of the sewage recycling device is changed into the vertical flow tumbling coagulation tank, the curved horizontal flow direction is changed into the combined flow direction of the vertical tumbling flow and the horizontal flow, and the path of water flow is prolonged by at least 20 meters, so that the hydraulic retention time is increased, the water flow speed is reduced, and the coagulation reaction is more complete. Manufacturing a coagulation tank partition plate by adopting a steel plate with the thickness of 10mm, leaving a port with the height of 1 meter and the width of 0.7 meter at the bottom of a first partition wall of the coagulation tank, and completely plugging the upper part of the first partition wall to enable water flow entering the coagulation tank to enter a second partition wall from the bottom of the first partition wall; the lower part of the second partition wall is fully plugged, and the top is provided with a port with the height of 1 meter and the width of 0.7 meter, so that water flow entering the second partition wall flows out from the top. The concrete situation is shown in a schematic diagram of the baffle plate of the coagulating sedimentation tank after the modification of the figure 3.
The original mud discharging pipe and the original mud discharging mode at the bottom of the coagulation pool are unchanged. The pipeline mixer is added on the sludge discharging main pipe, the anionic polyacrylamide is added in the pipeline mixer, the anionic polyacrylamide is added in the dosing port of the pipeline mixer when the sludge is discharged each time in the coagulating sedimentation tank, a large amount of supernatant can be formed in the sludge tank, and the volume of the sludge tank can be effectively saved after the supernatant is returned to the system. Meanwhile, the concentrated sludge is easier to be dehydrated by a filter press.
For example: the average value of the turbidity of the effluent of the inclined tube sedimentation tank before transformation is 4.47NTU, the qualification rate of the effluent of the inclined tube sedimentation tank is less than 5NTU and is 69.62%, the average value of the turbidity of the effluent of the inclined tube sedimentation tank after transformation is 2.67NTU, and the qualification rate of the effluent of the inclined tube sedimentation tank is less than 5NTU and is 96.5%. The turbidity of the effluent of the pretreatment system of the sewage recycling device stably reaches less than 5NTU for a long time, and is controlled within 3NTU, so that the replacement frequency and consumption of a large-flux filter element are reduced, the consumption is reduced by more than 20% in a comparable way, and the normal operation of the subsequent ultrafiltration and reverse osmosis membrane systems is ensured.
The operation period of the inclined tube sedimentation tank is short due to the reasons of floating sludge, high turbidity of effluent and the like before technical transformation, and the water treatment amount of the single inclined tube sedimentation tank is about 150-200m 3 Per hour, the PAC consumption of the coagulant in the single-set coagulation inclined tube sedimentation tank is 0.13kg/t sewage, and the water treatment amount of the single-set coagulation inclined tube sedimentation tank after transformation is about 250-300m 3 And/h, the PAC consumption of the coagulant is 0.07kg/t of sewage, so that the medicament is saved, and the water treatment amount is increased.
Therefore, the middle-sized flip-type baffle plate coagulating sedimentation tank provided in the embodiment utilizes the original coagulating tank body to save civil engineering construction and simultaneously saves mechanical stirring equipment; because the fluid is adopted to turn up and down, the medicine and the water are mixed more fully without pipeline mixingThe alum flocs formed when water flows to the water outlet of the coagulation tank are larger in reaction equipment such as a reactor and the like, and are easier to settle in the inclined tube sedimentation tank; the sludge discharge amount of the coagulation inclined tube sedimentation tank meets the system operation, ensures the long-period operation of the inclined tube sedimentation tank, and avoids the condition of flocs or sludge floating. The water treatment quantity is changed from 200m 3 Increase/h to 400m 3 And the water quality of the effluent can still be kept better during/h, the water quality change of the wastewater can be better adapted, and the transformation effect is obvious.
The technical principles of the present utility model have been described above in connection with specific embodiments, which are provided for the purpose of explaining the principles of the present utility model and are not to be construed as limiting the scope of the present utility model in any way. Other embodiments of the utility model will be apparent to those skilled in the art from consideration of this specification without undue burden.

Claims (9)

1. A medium-sized flip-type baffle coagulating sedimentation tank is characterized in that,
comprising the following steps: a sedimentation tank housing and a partition wall unit;
the sedimentation tank shell is a box-type structure body;
the partition wall unit is arranged in the sedimentation tank body and used for dividing the sedimentation tank body into a plurality of continuous communicated space lattices;
the communication ports on the partition walls of the space grids are arranged vertically in a staggered mode, so that sewage can vertically tumble and flow through the plurality of continuous communicated space grids, and the sewage is discharged into the inclined tube sedimentation tank for further treatment.
2. The sedimentation tank of claim 1, wherein the sedimentation tank is a sedimentation tank,
the partition wall unit includes: a first partition wall, a second partition wall, and a third partition wall;
the first partition wall and the second partition wall are fixedly arranged in the sedimentation tank shell side by side and are used for dividing the interior of the sedimentation tank shell into a first turnup lattice room, a second turnup lattice room and a third turnup lattice room;
the third partition wall is arranged in the third overturning lattice and is used for dividing the third overturning lattice into a fourth overturning lattice and a fifth overturning lattice.
3. A sedimentation tank as claimed in claim 2, characterized in that,
the first overturning lattice room, the second overturning lattice room, the fourth overturning lattice room and the fifth overturning lattice room are sequentially communicated;
the first overturning lattice room, the second overturning lattice room, the fourth overturning lattice room and the fifth overturning lattice room are arranged in a vertically staggered mode through communication ports, and sewage can vertically overturn and flow through the plurality of continuous communicated space lattices.
4. A sedimentation tank as claimed in claim 3, characterized in that,
and the bottoms of the first overturning lattice, the second overturning lattice, the fourth overturning lattice and the fifth overturning lattice are all connected with mud pipes.
5. The sedimentation tank of claim 4, wherein the sedimentation tank is a sedimentation tank,
the mud discharging pipes are connected with a mud discharging main pipe;
the mud discharging main pipe is connected with a pipeline mixer;
the pipeline mixer can add the anionic polyacrylamide to the sludge in the sludge discharge main pipe.
6. A sedimentation tank as claimed in claim 3, characterized in that,
the top of the sedimentation tank shell where the first turnup room is located is provided with a sewage inlet for injecting sewage to be treated into the first turnup room in the sedimentation tank shell.
7. A sedimentation tank as claimed in claim 3, characterized in that,
and a water outlet is arranged on the top of the sedimentation tank shell in the fifth turning room and is used for discharging the sewage subjected to the turning treatment into the inclined tube sedimentation tank.
8. The sedimentation tank of claim 7, wherein the sedimentation tank is a sedimentation tank,
and a dosing port is arranged on the top of the sedimentation tank shell in the second turnup room and used for adding anionic polyacrylamide into the second turnup room.
9. A sedimentation tank as claimed in claim 2, characterized in that,
the first partition wall, the second partition wall and the third partition wall are all made of steel plates with the thickness of 10 mm;
the bottom of the first partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter;
the top of the second partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter;
the bottom of the third partition wall is provided with a through hole with the height of 1 meter and the width of 0.7 meter.
CN202320835363.1U 2023-04-14 2023-04-14 Medium-sized stirring type baffle coagulating sedimentation tank Active CN220056495U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320835363.1U CN220056495U (en) 2023-04-14 2023-04-14 Medium-sized stirring type baffle coagulating sedimentation tank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320835363.1U CN220056495U (en) 2023-04-14 2023-04-14 Medium-sized stirring type baffle coagulating sedimentation tank

Publications (1)

Publication Number Publication Date
CN220056495U true CN220056495U (en) 2023-11-21

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Application Number Title Priority Date Filing Date
CN202320835363.1U Active CN220056495U (en) 2023-04-14 2023-04-14 Medium-sized stirring type baffle coagulating sedimentation tank

Country Status (1)

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