CN210683570U - High-efficient flocculation device and sludge dewatering processing system - Google Patents
High-efficient flocculation device and sludge dewatering processing system Download PDFInfo
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- CN210683570U CN210683570U CN201920869771.2U CN201920869771U CN210683570U CN 210683570 U CN210683570 U CN 210683570U CN 201920869771 U CN201920869771 U CN 201920869771U CN 210683570 U CN210683570 U CN 210683570U
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Abstract
The utility model discloses a high-efficient flocculation device and sludge dewatering processing system. The high-efficient flocculation device includes: the efficient flocculation mixing main body, the dry powder feeding system and the bottom supporting structure; the efficient flocculation mixing main body is a box body structure consisting of a plurality of box bodies including a mud medicine mixing box and a flocculation mixing tank; the mud inlet and the mud outlet are arranged at the upper part; stirring devices are arranged in the mud medicine mixing box and the flocculation mixing tank; the flow direction of the fluid in the mud medicine mixing box is upward, downward and upward; the flow direction of the fluid in the flocculation mixing tank is downward inlet and upward outlet; the box body structure is arranged on the bottom supporting structure; the dry powder feeding system is connected with a medicine feeding port on the box body. The sludge dewatering treatment system comprises the high-efficiency flocculation device and a screw stacking machine. This high-efficient flocculation device combines charge device and flocculation mixing tank to be in the same place, can replace flocculation mixing tank, charge device and the dosing pump of original spiral shell machine front end that folds, improves whole equipment productivity, practices thrift the clear water, and is small, and the saving equipment takes up an area of the space, reduces the blowdown.
Description
Technical Field
The utility model belongs to the technical field of the deep dehydration of mud, a high-efficient flocculation device and sludge dewatering processing system is related to.
Background
The sludge of the urban sewage plant is a byproduct of sewage treatment, and the sludge yield is increasing along with the continuous improvement of sewage treatment capacity and discharge standard. The water content of sludge of a sewage plant, also called municipal sludge or excess sludge, is generally between 98.0 and 99.9 percent, and the organic matter content of the absolutely dry sludge is 25 to 60 percent. Generally, agents such as PAM and the like are added, flocculation mixing treatment is carried out, then dehydration treatment is carried out by a stacked screw type sludge dehydrator, and the subsequent further utilization and treatment of the sludge cake can be carried out after the water content of the sludge cake is reduced to about 80%.
The existing sludge dewatering treatment system generally comprises a feeding system, a dosing system and a dewatering system which are connected in sequence as shown in fig. 7; the feeding system comprises a sludge tank and a feeding pump; the dosing system comprises a dosing device and a dosing pump; the dewatering system comprises a sludge flocculation mixing tank and a screw-stacking type sludge dewatering machine (a screw-stacking machine for short); the working process is as follows: sludge is pumped into a sludge flocculation mixing tank from a sludge pool through a feed pump, a PAM medicament is pumped into the sludge flocculation mixing tank through a medicament adding device and a medicament adding pump, sludge and the medicament are subjected to flocculation mixing reaction in the sludge flocculation mixing tank, enter a screw stacking machine for dehydration, and are transported outside a mud cake after the screw stacking machine is dehydrated. The existing sludge dewatering treatment system generally needs to be respectively provided with a dosing device, a sludge flocculation mixing tank and other auxiliary devices at the front end of the screw stacking machine, and occupies a larger space.
The existing dewatering system of the screw stacking machine only comprises the screw stacking machine and a sludge flocculation mixing tank, and does not contain a dosing system; in the actual working process, a PAM medicament is added by matching with a medicament adding device, and a medicament adding pump is used for conveying the liquid medicament to a flocculation mixing tank to operate; the dosing device is that 0.3 percent of medicament is added with 99.7 percent of clear water according to the proportion, the medicament is firstly conditioned and uniformly mixed in the dosing device, then the medicament liquid is conveyed into a flocculation mixing tank by a dosing pump, and the medicament liquid is mixed with muddy water and is flocculated in the flocculation mixing tank. The existing medicine adding device has the following defects: the clean water source is consumed, and clean water is required to be provided in proportion; the occupied area is large, and a dosing pump is needed.
The traditional sludge flocculation mixing tank is mainly used for separating mud and medicament before adding medicaments for mixing, namely, before mixing, the medicaments need to be dissolved in a medicament adding device in advance, conditioned and uniformly mixed, and then added into the sludge flocculation mixing tank to be subjected to flocculation mixing with sludge. This results in a reduction in the capacity of the overall equipment, a reduction in the efficiency of use of the equipment, and a reduction in the utilization of space.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, provides one kind and combines charge device and sludge flocculation mixing tank together, can replace the former preceding charge device of the spiral shell machine of folding and sludge flocculation mixing tank, improves the high-efficient flocculation device and the sludge dewatering processing system of whole equipment productivity.
The utility model aims at realizing through the following technical scheme:
the utility model relates to a high-efficient flocculation device, it includes: the efficient flocculation mixing main body, the dry powder feeding system and the bottom supporting structure; the efficient flocculation mixing main body is a box structure consisting of a plurality of boxes which are connected together and comprise a mud medicine mixing box and a flocculation mixing tank; the upper part of one side of the box body structure is provided with a mud inlet, and the upper part of the other side of the box body structure is provided with a mud outlet; the plurality of box bodies at least comprise two box bodies, namely at least one mud medicine mixing box and one flocculation mixing tank which are connected in sequence; a mud medicine mixing and stirring device is arranged in the mud medicine mixing box; a flocculation mixing and stirring device is arranged in the flocculation mixing tank; the upper part of the mud-medicine mixing box is provided with a mud inlet, the lower part of the mud-medicine mixing box is provided with a mud outlet, and the flow direction of fluid (namely mud) in the mud-medicine mixing box is upward inlet and downward outlet; the lower part of the flocculation mixing tank is provided with a sludge inlet which is communicated with a sludge outlet at the lower part of the mud medicine mixing box, the upper part of the flocculation mixing tank is provided with a sludge outlet, and the flow direction of fluid (namely sludge) in the flocculation mixing tank is downward inlet and upward outlet; the efficient flocculation mixing main box body structure is fixed on the bottom supporting structure; and a medicine adding port is arranged on the first box body, namely the mud-medicine mixing box, and the dry powder adding system is connected with the medicine adding port.
Further, the dry powder feeding system comprises a medicine feeding motor, a dry powder feeding hopper and a conveying screw rod; the dry powder feeding hopper is arranged on the high-efficiency flocculation mixing main body box body structure; the tail end of the conveying screw is arranged above the dosing port; the front end of the conveying screw is connected with a dosing motor and is driven by the dosing motor to convey the dry powder in the dry powder dosing hopper to a dosing port.
Furthermore, the plurality of box bodies comprise more than three box bodies, namely more than two mud medicine mixing boxes and a flocculation mixing tank which are connected in sequence, namely a primary mud medicine mixing box, a curing mud medicine mixing box, … … and a flocculation mixing tank which are connected in sequence; a flow guide cavity is arranged between every two mud medicine mixing boxes, a mud outlet at the lower part of the previous mud medicine mixing box is communicated with the flow guide cavity, and a mud inlet at the upper part of the next mud medicine mixing box is communicated with the flow guide cavity; namely, a flow guide cavity is arranged between the primary slurry-medicine mixing box and the curing slurry-medicine mixing box, a slurry outlet at the lower part of the primary slurry-medicine mixing box is communicated with the flow guide cavity, and a slurry inlet at the upper part of the curing slurry-medicine mixing box is communicated with the flow guide cavity; … …, and so on.
Furthermore, a flow guide cavity is also arranged between the mud medicine mixing box and the flocculation mixing tank; the mud outlet and the diversion chamber of mud medicine mixing box lower part communicate, and the mud inlet and the diversion chamber of flocculation mixing tank lower part communicate.
Further, the mud-medicine mixing and stirring device comprises a mud-medicine mixing and stirring motor, a connecting flange, a mud-medicine mixing and stirring shaft and a mud-medicine mixing and stirring blade which are sequentially connected; the mud-medicine mixing and stirring blade adopts an inclined-blade type stirring blade, and the rotating speed is 120-150 RPM; the mud medicine mixing motor is a variable frequency motor and has a speed regulation function.
Further, the flocculation mixing and stirring device comprises a flocculation mixing and stirring motor, a flocculation mixing and stirring shaft and a flocculation mixing and stirring blade which are connected in sequence; the flocculation mixing stirring paddle adopts a straight plate type or large-area inclined blade type stirring paddle, and the rotating speed is 20-40 RPM; the flocculation mixing stirring motor is a variable frequency motor and has a speed regulation function.
Furthermore, the bottom of the efficient flocculation device is provided with an emptying system, namely, the bottoms of the mud-drug mixing box and the flocculation mixing tank are provided with drain valves which are connected with drain pipes; when the equipment stops running, the sludge and the liquid medicine in the equipment can be emptied in time.
Further, the plurality of boxes (including the slurry mixing box and the flocculation mixing tank) can be round boxes or square boxes, or other shapes.
The utility model discloses a high-efficient flocculation device's theory of operation:
the sludge is conveyed into a mud-medicine mixing box body through a sludge pump, meanwhile, the agent is added into the mud-medicine mixing box body through a dry powder adding system, and the sludge and the agent are mixed and conditioned uniformly in the mud-medicine mixing box body and then enter a flocculation mixing tank for mixing and flocculation; the rotating speeds of blades of the stirring paddles in the mud and medicine mixing box body and the flocculation mixing tank are adjustable, and the flocculation effect can be effectively improved by adjusting the rotating speeds; an emptying device is arranged at the bottom of the flocculation mixing tank.
Stirring the sludge and the liquid medicine in a sludge and medicine mixing box to fully mix and condition the sludge and the liquid medicine; the stirring paddle adopts an inclined blade type, which is beneficial to fully mixing and quickly dissolving mud drugs; the stirring paddle controls the rotating speed to be 120RPM to 150RPM by a variable frequency motor; the sludge and the liquid medicine are in an up-in and down-out mode in the sludge and medicine mixing box to prolong the mixing time of the sludge and the liquid medicine.
The mud medicine mixing box can be composed of a single box body and a stirring device, and also can be composed of two (or more) box bodies and two (or more) stirring devices, and the plurality of box bodies can enable mud medicines to be mixed more fully; for example, by two boxes and two agitating unit constitutions, muddy water and liquid medicine get into preliminary mud medicine mixing box simultaneously, and mud medicine gets into curing mud medicine mixing box after preliminary mud medicine mixes, and mud medicine further mixes (and the curing reaction) in curing mud medicine mixing box and gets into the flocculation mixing tank after.
The sludge and the liquid medicine are stirred in a flocculation mixing tank to fully mix and flocculate the sludge and the liquid medicine and prevent sludge from settling; the stirring paddle adopts a straight plate type stirring paddle or a large-area inclined blade type stirring paddle, which is beneficial to flocculation; the stirring paddle controls the rotating speed to be 20RPM to 40RPM by the variable frequency motor, and can effectively improve the mixing effect of muddy water and a medicament and effectively improve the flocculation effect by adjusting the rotating speed; the flocculation time of the sludge and the liquid medicine is prolonged in a mode of downward feeding and upward discharging in the flocculation mixing tank; forming an ideal floc, and then entering a screw stacking machine for sludge-water separation.
A dry powder adding system: the dosage can be adjusted according to the water content, the components and the treatment capacity of the sludge; improve the flocculation effect and reduce the cost.
The utility model relates to a sludge dewatering treatment system adopting the high-efficiency flocculation device, which comprises a feeding system and a dewatering system which are connected in sequence; the feeding system comprises a sludge tank and a feeding pump; the dewatering system comprises the efficient flocculation device and a screw-stacking type sludge dewatering machine (screw-stacking machine); the inlet of the feed pump is connected with a sludge tank; the outlet of the feeding pump is connected with the sludge inlet of the high-efficiency flocculation device; the sludge outlet of the high-efficiency flocculation device is connected with the sludge inlet of the screw stacking machine. The working process is as follows: sludge in a sewage plant is pumped into the high-efficiency flocculation device from a sludge tank through a feed pump, the sludge and the medicament are subjected to flocculation mixing reaction in the high-efficiency flocculation device, then the sludge and the medicament enter a screw stacking machine for dehydration, and mud cakes dehydrated by the screw stacking machine are transported outwards.
The water content of the residual sludge of the sewage plant is generally between 98.0 and 99.9 percent, and the organic matter content of the oven-dried sludge is 25 to 60 percent; after the efficient flocculation device is used for flocculation mixing treatment and the stacked spiral sludge dewatering machine is used for dewatering, the water content of the sludge cake can be reduced to below 85% (controlled between 80% and 85%).
The utility model has the advantages that:
the utility model discloses a high-efficient flocculation device, the technical problem who solves is: can directly throw in the sewage and add medicament (PAM dry powder), dissolve that the flocculation is all accomplished in high-efficient flocculation device, does not need clean water source, takes up an area of fewly, and the equipment energy consumption reduces, has improved the productivity of whole equipment.
The utility model discloses a high-efficient flocculation device combines charge device and sludge flocculation mixing tank together, can replace original sludge flocculation mixing tank, charge device and the dosing pump of folding spiral shell formula sludge dewaterer (folding spiral shell machine) front end, improves the productivity of whole equipment, practices thrift the clear water, and is small, and saving equipment takes up an area of the space, reduces the blowdown.
In the traditional sludge flocculation mixing tank, before adding a medicament, the medicament needs to be dissolved, conditioned and uniformly mixed in advance in a medicament adding device and then added. Adopt the utility model discloses a high-efficient flocculating device can directly throw into the medicament dry powder, can improve whole equipment's productivity effectively, improve equipment's availability factor, improves the space utilization, and does not need the water source, takes up an area of fewly, and the energy consumption is few.
The utility model discloses a high-efficient flocculation device has following advantage:
1. the sludge treatment efficiency is high, the equipment use efficiency is high, and the space utilization rate is high.
2. Because clear water is not needed, the problem of water source is solved, and pollution discharge is reduced.
3. Because no clear water is used for dilution, the efficiency of sludge dewatering is improved, the productivity is improved, and the cost is reduced.
4. Saves a dosing pump, a stirring speed reducer and a mixing tank, and effectively reduces the occupied area, the energy consumption, the cost and the like.
5. The medicament is convenient to add.
6. The influence on the environment is small.
Drawings
FIG. 1 is a schematic view of the high efficiency flocculation apparatus of the present invention;
FIG. 2 is a schematic view (front view) showing the flow direction of sludge in the efficient flocculation apparatus of the present invention;
FIG. 3 is a schematic view (plan view) of the direction of flow of sludge in the efficient flocculation apparatus of the present invention;
FIG. 4 is a schematic structural view of a dry powder adding system of the present invention;
FIG. 5 is a schematic structural view of a flocculation mixing and stirring device of the present invention;
FIG. 6 is a schematic structural view of the mud-medicine mixing and stirring device of the present invention;
FIG. 7 is a schematic view showing the construction of a conventional sludge dewatering system;
FIG. 8 is a schematic structural view of the sludge dewatering treatment system of the present invention.
In the figure: 1. a flocculation mixing tank; 2. a flocculation mixing and stirring device; 3. curing the mud medicine mixing box; 4. a mud-medicine mixing and stirring device; 5. a dry powder dosing system; 6. a mud-medicine mixing and stirring device; 7. a preliminary slurry-medicine mixing box; 8. a bottom support structure; 9. a blow-off pipe; 10. a flow guide cavity; 11. a dosing motor; 12. feeding dry powder into a hopper; 13. a fan blade; 14. an observation window; 15, conveying screw; 16. a flocculation mixing stirring motor; 17. a flocculation mixing stirring shaft; 18. a flocculation mixing stirring paddle; 19, a mud medicine mixing and stirring motor; 20. a connecting flange; 21. a mud medicine mixing stirring shaft; 22. a mud medicine mixing and stirring blade; 23, a diversion cavity; 24. and a medicine adding port.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples. However, the present invention is not limited to the embodiments.
Example 1
As shown in fig. 1, fig. 2 and fig. 3, the utility model relates to a high-efficiency flocculation device, which mainly comprises the following three parts: the efficient flocculation mixing main body, the dry powder feeding system 5 and the bottom supporting mechanism 8; the efficient flocculation mixing main body is a box structure consisting of a plurality of boxes which are connected together and comprise a mud medicine mixing box and a flocculation mixing tank; the upper part of one side of the box body structure is provided with a mud inlet, and the upper part of the other side of the box body structure is provided with a mud outlet; the plurality of box bodies comprise three box bodies, namely a primary slurry and medicine mixing box 7, a curing slurry and medicine mixing box 3 and a flocculation mixing tank 1 which are connected in sequence; a mud-medicine mixing and stirring device 6 is arranged in the preliminary mud-medicine mixing box 7; a mud and medicine mixing and stirring device 4 is arranged in the curing mud and medicine mixing box 3; a flocculation mixing and stirring device 2 is arranged in the flocculation mixing tank 1; the mud-medicine mixing box (comprising a primary mud-medicine mixing box 7 and a curing mud-medicine mixing box 3) is provided with a mud inlet at the upper part and a mud outlet at the lower part, and the flow direction of fluid (namely mud) in the mud-medicine mixing box is upward inlet and downward outlet; the lower part of the flocculation mixing tank is provided with a sludge inlet which is communicated with a sludge outlet at the lower part of the curing mud medicine mixing box 3, the upper part of the flocculation mixing tank 1 is provided with a sludge outlet, and the flow direction of fluid (namely sludge) in the flocculation mixing tank 1 is downward inlet and upward outlet; the high-efficiency flocculation mixing main box body structure is fixed on the bottom supporting structure 8.
As shown in fig. 2 and 3, a flow guide cavity 10 is arranged between the mud medicine mixing boxes, that is, a flow guide cavity 10 is arranged between the preliminary mud medicine mixing box 7 and the curing mud medicine mixing box 3, a mud outlet at the lower part of the preliminary mud medicine mixing box 7 is communicated with the flow guide cavity 10, and a mud inlet at the upper part of the curing mud medicine mixing box 3 is communicated with the flow guide cavity 10; that is, the primary slurry mixing tank 7 is communicated with the curing slurry mixing tank 3 through the diversion cavity 10.
As shown in fig. 2 and 3, in the present embodiment, three tank bodies, namely, the preliminary slurry-chemical mixing tank 7, the curing slurry-chemical mixing tank 3, and the flocculation mixing tank 1 are all circular tank bodies; a flow guide cavity 24 is also arranged between the curing mud medicine mixing box 3 and the flocculation mixing tank 1; a sludge outlet at the lower part of the curing slurry-drug mixing box 3 is communicated with the flow guide cavity 24, and a sludge inlet at the lower part of the flocculation mixing tank 1 is communicated with the flow guide cavity 24; that is, the curing mud medicine mixing box 3 is communicated with the flocculation mixing tank 1 through the diversion cavity 24.
As shown in fig. 1 and 4, the dry powder adding system 5 comprises a medicine adding motor 11, a dry powder adding hopper 12 and a conveying screw 15; the dry powder feeding hopper 12 is arranged on the high-efficiency flocculation mixing main body box body structure, and an observation window 14 is arranged on the dry powder feeding hopper; a medicine adding opening 24 is arranged on the first box body, namely the primary mud medicine mixing box 7; the tail end of the conveying screw rod 15 is arranged above the dosing port 24; the front end of the conveying screw 15 is connected with the dosing motor 11 and driven by the dosing motor 11, and dry powder in the dry powder dosing hopper 12 is conveyed to the dosing port 24 through a fan blade 13 arranged on the conveying screw 15.
As shown in fig. 5, the flocculation mixing and stirring device 2 comprises a flocculation mixing and stirring motor 16, a flocculation mixing and stirring shaft 17 and a flocculation mixing and stirring blade 18 which are connected in sequence; the flocculation mixing stirring paddle 18 adopts a straight-plate stirring paddle, and the rotating speed is 20-40 RPM; the flocculation mixing and stirring motor 16 is a variable frequency motor and has a speed regulation function.
As shown in fig. 6, the mud medicine mixing and stirring device 6 and the mud medicine mixing and stirring device 4 comprise a mud medicine mixing and stirring motor 19, a connecting flange 20, a mud medicine mixing and stirring shaft 21 and a mud medicine mixing and stirring blade 22 which are connected in sequence; the mud-medicine mixing and stirring blade 22 adopts an inclined-blade type stirring blade, and the rotating speed is 120-150 RPM; the mud medicine mixing motor 19 is a variable frequency motor and has a speed regulation function.
As shown in figure 1, the bottom of the high-efficiency flocculation device is provided with an emptying device, namely, the bottoms of the primary slurry-medicine mixing box 7, the curing slurry-medicine mixing box 3 and the flocculation mixing tank 1 are provided with drain valves which are connected with a drain pipe 9; when the equipment stops running, the sludge and the liquid medicine in the equipment can be emptied in time.
This high-efficient flocculation mixing main part of high-efficient flocculation device is by the mixed stirring rake in a plurality of boxes and the box (preliminary mud medicine mixing box 7 and mud medicine mixing stirring device 6 promptly, curing mud medicine mixing box 3 and mud medicine mixing stirring device 4, flocculation mixing tank 1 and flocculation mixing stirring device 2) and the water conservancy diversion chamber between the box constitute, and the mode that mud medicine mixing tank adopted the last mode of advancing down, the mode of advancing up-out under adopting in the flocculation mixing tank can effectively improve the mixed effect of flocculation.
The working principle of the high-efficiency flocculation device is as follows:
sludge is carried to 7 boxes of preliminary mud medicine mixing box through sludge pump (charge pump), simultaneously, dry powder dosing system 5 begins to add the medicine, mud and medicament are behind preliminary misce bene in 7 boxes of preliminary mud medicine mixing box, enter into and carry out curing reaction in 3 boxes of curing mud medicine mixing box, then carry out flocculation reaction in getting into flocculation mixing tank 1, wherein, agitating unit's in mud medicine mixing box and the flocculation mixing tank blade rotation rate is adjustable, through the rotation rate of adjusting stirring vane, can effectively improve the flocculation effect.
Stirring the sludge and the liquid medicine in a sludge and medicine mixing box to fully mix and condition the sludge and the liquid medicine; the stirring paddle adopts an inclined blade type, which is beneficial to fully mixing and quickly dissolving mud drugs; the stirring paddle controls the rotating speed to be 120RPM to 150RPM by a variable frequency motor; the sludge and the liquid medicine are in an up-in and down-out mode in the sludge and medicine mixing box to prolong the mixing time of the sludge and the liquid medicine.
The mud medicine mixing box comprises two box bodies and two stirring devices, and the plurality of box bodies can enable mud medicines to be mixed more fully; muddy water and liquid medicine enter the preliminary mud medicine mixing box simultaneously, mud medicine enters the curing mud medicine mixing box after preliminary mud medicine is mixed, and mud medicine enters the flocculation mixing tank after being further mixed (and cured) in the curing mud medicine mixing box.
The sludge and the liquid medicine are stirred in a flocculation mixing tank to fully mix and flocculate the sludge and the liquid medicine and prevent sludge from settling; the stirring paddle adopts a straight plate type stirring paddle or a large-area inclined blade type stirring paddle, which is beneficial to flocculation; the stirring paddle controls the rotating speed to be 20RPM to 40RPM by the variable frequency motor, and can effectively improve the mixing effect of muddy water and a medicament and effectively improve the flocculation effect by adjusting the rotating speed; the sludge and the liquid medicine are fed into the flocculation mixing tank from bottom to top to prolong the flocculation time of the sludge and the liquid medicine, form an ideal floc, and then enter the screw stacking machine for sludge-water separation.
A dry powder adding system: the dosage can be adjusted according to the water content, the components and the treatment capacity of the sludge; improve the flocculation effect and reduce the cost.
Example 2
The sludge dewatering treatment system adopting the efficient flocculation device of the utility model comprises a feeding system and a dewatering system which are connected in sequence as shown in figure 8; the feeding system comprises a sludge tank and a feeding pump; the dewatering system comprises the high-efficiency flocculation device and a screw-stacking type sludge dewatering machine (screw-stacking machine) in the embodiment 1; the inlet of the feed pump is connected with a sludge tank; the outlet of the feeding pump is connected with the sludge inlet of the high-efficiency flocculation device; and a sludge outlet of the high-efficiency flocculation device is connected with a sludge inlet of the screw stacking machine.
The working process is as follows: sludge in a sewage plant is pumped into the high-efficiency flocculation device from a sludge tank through a feed pump, the sludge and the medicament are subjected to flocculation mixing reaction in the high-efficiency flocculation device, then the sludge and the medicament enter a screw stacking machine for dehydration, and mud cakes dehydrated by the screw stacking machine are transported outwards.
The working principle is as follows:
sludge in a sludge pool of a sewage plant is conveyed to a primary mud-drug mixing box 7 of the high-efficiency flocculation device through a feed pump of a feed system, meanwhile, a dry powder feeding system 5 starts to feed the sludge, the sludge and the drug are primarily mixed uniformly in the primary mud-drug mixing box 7, then the sludge and the drug enter a curing mud-drug mixing box 3 to undergo a curing reaction, and then the sludge and the drug enter a flocculation mixing tank 1 to undergo a flocculation reaction, wherein the rotating speeds of blades of stirring devices in the mud-drug mixing box and the flocculation mixing tank are adjustable, and the flocculation effect can be effectively improved by adjusting the rotating speed of stirring blades; then, the sludge after the flocculation mixing reaction is finished comes out from a sludge outlet at the bottom of the flocculation mixing tank 1 and enters a screw stacking machine for dehydration; and finally, transporting the mud cakes dehydrated by the screw stacking machine.
The water content of the residual sludge in the sludge pool of the sewage plant is generally between 98.0 and 99.9 percent, and the organic matter content of the absolutely dry sludge is 25 to 60 percent; after the efficient flocculation device is used for flocculation mixing treatment and the stacked spiral sludge dewatering machine is used for dewatering, the water content of the sludge cake can be reduced to below 85% (controlled between 80% and 85%).
Example 3
As shown in fig. 1, the utility model relates to a high-efficiency flocculation device, which comprises a high-efficiency flocculation mixing main body, a dry powder feeding system 5 and a bottom supporting mechanism 8; the efficient flocculation mixing main body is a box structure consisting of a plurality of boxes which are connected together and comprise a mud medicine mixing box and a flocculation mixing tank; the upper part of one side of the box body structure is provided with a mud inlet, and the upper part of the other side of the box body structure is provided with a mud outlet; the plurality of box bodies comprise three box bodies, namely a primary slurry and medicine mixing box 7, a curing slurry and medicine mixing box 3 and a flocculation mixing tank 1 which are connected in sequence; a mud-medicine mixing and stirring device 6 is arranged in the preliminary mud-medicine mixing box 7; a mud and medicine mixing and stirring device 4 is arranged in the curing mud and medicine mixing box 3; a flocculation mixing and stirring device 2 is arranged in the flocculation mixing tank 1; the mud-medicine mixing box (comprising a primary mud-medicine mixing box 7 and a curing mud-medicine mixing box 3) is provided with a mud inlet at the upper part and a mud outlet at the lower part, and the flow direction of fluid (namely mud) in the mud-medicine mixing box is upward inlet and downward outlet; the lower part of the flocculation mixing tank is provided with a sludge inlet which is communicated with a sludge outlet at the lower part of the curing mud medicine mixing box 3, the upper part of the flocculation mixing tank 1 is provided with a sludge outlet, and the flow direction of fluid (namely sludge) in the flocculation mixing tank 1 is downward inlet and upward outlet; the high-efficiency flocculation mixing main box body structure is fixed on the bottom supporting structure 8; a medicine adding opening 24 is arranged on the first box body, namely the primary mud medicine mixing box 7; the dry powder adding system 5 comprises a medicine adding motor 11, a dry powder adding hopper 12 and a conveying screw 15; the dry powder feeding hopper 12 is arranged on the high-efficiency flocculation mixing main body box body structure, and an observation window 14 is arranged on the dry powder feeding hopper; the tail end of the conveying screw rod 15 is arranged above the dosing port 24; the front end of the conveying screw 15 is connected with the dosing motor 11 and driven by the dosing motor 11, and dry powder in the dry powder dosing hopper 12 is conveyed to the dosing port 24 through a fan blade 13 arranged on the conveying screw 15.
Be equipped with water conservancy diversion chamber 10 between each mud medicine mixing box, promptly, be equipped with water conservancy diversion chamber 10 between preliminary mud medicine mixing box 7 and the curing mud medicine mixing box 3, the mud mouth and the water conservancy diversion chamber 10 intercommunication of the play mud mouth of 7 lower parts of preliminary mud medicine mixing box, the mud mouth and the water conservancy diversion chamber 10 intercommunication of advancing on 3 upper portions of curing mud medicine mixing box.
In the embodiment, the three box bodies, namely the primary slurry and medicine mixing box 7, the curing slurry and medicine mixing box 3 and the flocculation mixing tank 1 are square box bodies; do not establish the water conservancy diversion chamber between curing mud medicine mixing box 3 and flocculation mixing tank 1, the play mud mouth of 3 lower parts of curing mud medicine mixing box is exactly the mud mouth that advances of 1 lower part of flocculation mixing tank, that is to say, curing mud medicine mixing box 3 is direct intercommunication with flocculation mixing tank 1.
Claims (9)
1. A high-efficiency flocculation device is characterized by comprising: the efficient flocculation mixing main body, the dry powder feeding system and the bottom supporting structure; the high-efficiency flocculation mixing main body is a box body structure consisting of a plurality of box bodies which are connected together; the upper part of one side of the box body structure is provided with a mud inlet, and the upper part of the other side of the box body structure is provided with a mud outlet; the plurality of box bodies at least comprise two box bodies, namely at least one mud medicine mixing box and one flocculation mixing tank which are connected in sequence; a mud medicine mixing and stirring device is arranged in the mud medicine mixing box; a flocculation mixing and stirring device is arranged in the flocculation mixing tank; the upper part of the mud-medicine mixing box is provided with a mud inlet, the lower part of the mud-medicine mixing box is provided with a mud outlet, and the flow direction of fluid, namely mud in the mud-medicine mixing box is upward inlet and downward outlet; the lower part of the flocculation mixing tank is provided with a sludge inlet which is communicated with a sludge outlet at the lower part of the mud medicine mixing box, the upper part of the flocculation mixing tank is provided with a sludge outlet, and the fluid in the flocculation mixing tank, namely the sludge, flows downwards and upwards; the efficient flocculation mixing main box body structure is fixed on the bottom supporting structure; and a medicine adding port is arranged on the first box body, namely the mud-medicine mixing box, and the dry powder adding system is connected with the medicine adding port.
2. The efficient flocculation apparatus of claim 1, wherein the dry powder dosing system comprises a dosing motor, a dry powder dosing hopper, and a conveying screw; the dry powder feeding hopper is arranged on the high-efficiency flocculation mixing main body box body structure; the tail end of the conveying screw is arranged above the dosing port; the front end of the conveying screw is connected with a dosing motor and is driven by the dosing motor to convey the dry powder in the dry powder dosing hopper to a dosing port.
3. A high efficiency flocculation apparatus as claimed in claim 1 or 2, wherein said plurality of tanks comprises more than three tanks, i.e. more than two slurry-drug mixing tanks and one flocculation mixing tank connected in series; be equipped with the water conservancy diversion chamber between each mud medicine mixing box, the mud mouth and the water conservancy diversion chamber intercommunication of the play mud mouth of preceding mud medicine mixing box lower part, the mud mouth and the water conservancy diversion chamber intercommunication of the last mud medicine mixing box upper portion.
4. A high efficiency flocculation apparatus as claimed in claim 3, wherein a flow guide chamber is also provided between the sludge-chemical mixing tank and the flocculation mixing tank; the mud outlet and the diversion chamber of mud medicine mixing box lower part communicate, and the mud inlet and the diversion chamber of flocculation mixing tank lower part communicate.
5. A high-efficiency flocculation device as claimed in claim 1 or 2, wherein the mud-drug mixing and stirring device comprises a mud-drug mixing and stirring motor, a connecting flange, a mud-drug mixing and stirring shaft and a mud-drug mixing and stirring blade which are connected in sequence; the mud-medicine mixing and stirring blade adopts an inclined-blade type stirring blade, and the rotating speed is 120-150 RPM; the mud medicine mixing motor is a variable frequency motor and has a speed regulation function.
6. A high-efficiency flocculation device as claimed in claim 1 or 2, wherein the flocculation mixing stirring device comprises a flocculation mixing stirring motor, a flocculation mixing stirring shaft and a flocculation mixing stirring paddle which are connected in sequence; the flocculation mixing stirring paddle adopts a straight plate type or large-area inclined blade type stirring paddle, and the rotating speed is 20-40 RPM; the flocculation mixing stirring motor is a variable frequency motor and has a speed regulation function.
7. A high efficiency flocculation apparatus as claimed in claim 1 or 2, wherein an emptying system is provided at the bottom of the high efficiency flocculation apparatus, i.e. a drain valve is provided at the bottom of each of the sludge-chemical mixing tank and the flocculation mixing tank, and is connected with a drain pipe.
8. A highly efficient flocculation apparatus as claimed in claim 1 or 2 wherein said plurality of tanks are circular tanks or square tanks.
9. A sludge dewatering treatment system using the high efficiency flocculation apparatus of any of claims 1 to 8, comprising a feed system and a dewatering system connected in series; the feeding system comprises a sludge tank and a feeding pump; the dewatering system comprises the high-efficiency flocculation device and a screw-stacking type sludge dewatering machine, namely a screw-stacking machine; the inlet of the feed pump is connected with a sludge tank; the outlet of the feeding pump is connected with the sludge inlet of the high-efficiency flocculation device; and a sludge outlet of the high-efficiency flocculation device is connected with a sludge inlet of the screw stacking machine.
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| CN110066094A (en) * | 2019-06-11 | 2019-07-30 | 上海同臣环保有限公司 | A kind of efficient flocculating device and sludge dewatering treatment system |
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