CN117088589A - Sludge drying pretreatment device and method - Google Patents
Sludge drying pretreatment device and method Download PDFInfo
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- CN117088589A CN117088589A CN202311171235.2A CN202311171235A CN117088589A CN 117088589 A CN117088589 A CN 117088589A CN 202311171235 A CN202311171235 A CN 202311171235A CN 117088589 A CN117088589 A CN 117088589A
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- 239000010802 sludge Substances 0.000 title claims abstract description 316
- 238000001035 drying Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000010865 sewage Substances 0.000 claims abstract description 133
- 238000004062 sedimentation Methods 0.000 claims abstract description 116
- 238000000926 separation method Methods 0.000 claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007787 solid Substances 0.000 claims abstract description 22
- 239000002245 particle Substances 0.000 claims abstract description 19
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000002203 pretreatment Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 4
- 238000005191 phase separation Methods 0.000 abstract 1
- 239000012535 impurity Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge drying pretreatment device and a method, which belong to the technical field of sludge treatment, wherein the sludge drying pretreatment device comprises a separation structure, a first sedimentation zone, a second sedimentation zone and a sludge discharge assembly, the separation structure comprises a sewage separation cylinder, a sludge separation cylinder, a conveying piece and a driving piece, one end of the sewage separation cylinder is provided with a sludge inlet, and the other end of the sewage separation cylinder is communicated with the interior of the sludge separation cylinder; the conveying piece is arranged between the sewage separating cylinder and the interior of the sludge separating cylinder in a penetrating way; the feeding end of the first sedimentation zone corresponds to the sewage discharge end of the sewage separating cylinder, and the upper side and the lower side of the first sedimentation zone are respectively provided with a water outlet and a sludge outlet; the feeding end of the second sedimentation zone corresponds to the sewage discharge end of the sludge separation cylinder; the feeding end of the sludge discharging assembly is communicated with the sludge port, and the discharging end of the sludge discharging assembly is communicated with the sludge inlet; according to the invention, the three-phase separation is carried out on the large-size solid particles, the sludge and the sewage, so that the subsequent treatment of the sludge is facilitated.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a sludge drying pretreatment device and a sludge drying pretreatment method.
Background
Along with the continuous perfection and improvement of sewage treatment technology, the treatment of sludge becomes an important link of the design and operation of sewage plants, which must be prioritized, and the sludge dewatering equipment has been widely applied in industries such as municipal domestic sewage, river water, industrial sewage and the like.
In the sewage treatment process and the sludge collection, transportation and temporary storage process, other larger-sized and harder sundries or solid particles and the like are mixed, so that the follow-up sludge continuous reduction and recycling are affected, the publication No. CN112794615A provides a sludge crushing and drying device which comprises a machine base, a drying rotary drum is transversely arranged on the machine base, an inner rotary shaft is arranged in the drying rotary drum, a stirring and pushing rod assembly is arranged on the inner rotary shaft along the radial direction, the stirring and pushing rod assembly comprises a pushing section and a fine crushing section along the extending direction of the inner rotary shaft, a material inlet is arranged at one end of the drying rotary drum, which is close to the pushing section, a hot smoke inlet is arranged above the material inlet, and a fine crushing rotary wheel is arranged at the tail end of the stirring and pushing rod in the fine crushing section; refining the agglomerated sludge by using a stirring pushing rod and a refining rotating wheel in the refining section; however, the sludge contains large-particle solid matters which are hard and hard to crush, for example, when a worker cleans the ground, large-size stones and the like are easy to mix into the sludge temporary storage bin, and the sludge of an electroplating factory possibly contains sharp screws, nuts and other parts, so that when the mixed matters of different types are not removed in time, serious abrasion or clamping faults of crushing equipment are extremely easy to cause, thereby influencing the treatment efficiency of the sludge.
Disclosure of Invention
The invention aims to overcome the technical defects, and provides a sludge drying pretreatment device and a sludge drying pretreatment method, which solve the technical problems that hard large-particle solid matters in sludge are difficult to remove and equipment faults are easy to cause in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention provides a sludge drying pretreatment device and a sludge drying pretreatment method.
In a first aspect, the invention provides a sludge drying pretreatment device, which comprises a separation structure, a first sedimentation zone, a second sedimentation zone and a sludge discharge assembly,
the separation structure comprises a sewage separation cylinder, a sludge separation cylinder, a conveying part and a driving part, wherein one end of the sewage separation cylinder is provided with a sludge inlet, the other end of the sewage separation cylinder is communicated with the interior of the sludge separation cylinder, the peripheral wall of the sewage separation cylinder is provided with a plurality of first sieve holes for filtering out sewage, and the peripheral wall of the sludge separation cylinder is provided with a plurality of second sieve holes for filtering out sludge; the conveying part is arranged between the sewage separating cylinder and the interior of the sludge separating cylinder in a penetrating way and comprises a driving section arranged in the sewage separating cylinder and a connecting section arranged in the sludge separating cylinder, wherein the driving section is used for conveying sludge from the sewage separating cylinder to the sludge separating cylinder when rotating, the connecting section is connected with the sludge separating cylinder, and the driving part is connected with the conveying part and is used for driving the conveying part to rotate; the feeding end of the first sedimentation zone corresponds to the sewage discharge end of the sewage separating cylinder, and the upper side and the lower side of the first sedimentation zone are respectively provided with a water outlet and a sludge outlet; the feeding end of the second sedimentation zone corresponds to the sewage discharge end of the sludge separation cylinder, and one side and the lower side of the second sedimentation zone are respectively provided with a sludge inlet and a sludge outlet; the feeding end of the sludge discharging assembly is communicated with the sludge inlet, and the discharging end of the sludge discharging assembly is communicated with the sludge inlet so as to convey the sludge in the first sedimentation zone into the second sedimentation zone.
In some embodiments, the sludge drying pretreatment device further comprises a treatment tank, wherein the separation structure is arranged in the treatment tank, and a partition plate is arranged at the lower part of the treatment tank so as to divide the lower part of the treatment tank to form a first sedimentation zone and a second sedimentation zone.
In some embodiments, the cross-sectional areas of the first settling zone and the second settling zone are both sequentially reduced from top to bottom, the sewage separation cylinder and the sludge separation cylinder are both obliquely arranged, and gradually incline downwards from one end close to the sludge inlet of the sewage separation cylinder to the other end, the diameter of the sewage separation cylinder is smaller than that of the sludge separation cylinder, and the diameter of the first sieve holes is smaller than that of the second sieve holes.
In some embodiments, a second separating cylinder is sleeved on the outer peripheral side of the sewage separating cylinder, the cylinder wall of the second separating cylinder is arranged at intervals with the cylinder wall of the sewage separating cylinder, the cylinder wall of the second separating cylinder is provided with a sieve hole with the same aperture as the first sieve hole, one side of the second separating cylinder is provided with an outlet corresponding to the second sedimentation zone, and the second separating cylinder and the sewage separating cylinder are coaxially arranged.
In some embodiments, the drive section comprises a screw rod rotatably disposed within the wastewater separator cartridge for blocking or transporting the sludge; the connecting section comprises a center rod and a plurality of connecting pieces which are uniformly arranged along the length direction of the center rod, the center rod and the connecting pieces are all arranged in the sludge separating cylinder, one end of the center rod is fixedly connected with the central shaft of the spiral rod, the other end of the center rod is connected with the driving end of the driving piece, the connecting pieces comprise a plurality of connecting rods which are circumferentially arranged along the center rod, and the center rod is fixedly connected with the sludge separating cylinder through the connecting rods;
the driving piece comprises a motor, the motor is arranged on one side of the sludge separating cylinder, and the driving end of the motor is connected with the center rod for driving the center rod and the screw rod to rotate.
In some embodiments, the sludge discharge assembly comprises a first connecting pipe, a sludge pump and a second connecting pipe, wherein a sludge inlet of the sludge pump is connected with one end of the first connecting pipe, the other end of the first connecting pipe is arranged at the sludge inlet, a sludge outlet of the sludge pump is connected with one end of the second connecting pipe, and one end of the second connecting pipe is arranged at the sludge inlet.
In some embodiments, a concentrating filter plate is disposed above the second settling zone, with obliquely disposed compression holes in the concentrating filter plate.
In a second aspect, the invention provides a sludge drying pretreatment method, which is applicable to the sludge drying pretreatment device, and comprises the following steps:
s100: the method comprises the steps that sludge enters the sewage separating cylinder through a sludge inlet of the sewage separating cylinder, sewage in the sewage separating cylinder is filtered out through first sieve holes, and a driving section of a conveying member is driven by a driving member to rotate so as to convey the sludge in the sewage separating cylinder into the sludge separating cylinder;
s200: filtering out sludge and small-sized solid particles from the sludge in the sludge separating cylinder through a second sieve pore, and retaining the solid particles with the size larger than the preset size in the sludge separating cylinder;
s300: the sewage filtered by the sewage separating cylinder flows into a first sedimentation zone, after sedimentation is carried out in the first sedimentation zone, water is discharged through a water outlet, a small amount of sludge contained in the water is deposited at the bottom of the first sedimentation zone, and the sludge in the first sedimentation zone is conveyed into a second sedimentation zone through sludge discharge;
s400: the sludge filtered by the sludge separating cylinder and the sludge deposited at the bottom of the first sedimentation zone are discharged to the second sedimentation zone, and after sedimentation and concentration are carried out in the second sedimentation zone, the sludge is discharged through a sludge outlet.
Compared with the prior art, the invention has the beneficial effects that: through the separation structure, water, sludge and large-size solid matters contained in the sludge to be treated can be subjected to preliminary separation treatment, unqualified large-size solid particles are reserved in the sludge separation cylinder, and cannot be mixed in the sludge to carry out subsequent drying procedures together with the sludge, so that impurities contained in the sludge are removed, the blocking failure of a subsequent conveying device or a shaping device of drying equipment is avoided, meanwhile, the water content in the sludge can be filtered, the water content of the sludge is reduced, and the subsequent drying treatment efficiency of the sludge is improved;
through the first sedimentation zone and the second sedimentation zone that set up, carry out further processing to filterable sewage and mud respectively, the mud that deposits in the first sedimentation zone can be through the pumping of mud subassembly to the second sedimentation zone, and sewage and mud through the sediment can be respectively through outlet and mud mouth sending out carry out subsequent classification, and impurity content in the sewage and the moisture content in the mud can be reduced respectively in first sedimentation zone and the second sedimentation zone, is favorable to follow-up handling of mud and sewage.
Drawings
FIG. 1 is a schematic view of a whole front cross-section structure of an embodiment of a sludge drying pretreatment device provided by the invention;
FIG. 2 is a schematic sectional view showing a separation structure of the sludge drying pretreatment apparatus of FIG. 1;
FIG. 3 is a schematic perspective view of the sludge drying pretreatment apparatus of FIG. 1;
FIG. 4 is a schematic cross-sectional side view of the sludge drying pretreatment apparatus of FIG. 1;
FIG. 5 is a schematic cross-sectional side view of a sludge separation vessel of the sludge drying pretreatment apparatus of FIG. 1;
fig. 6 is a flow chart of the sludge drying pretreatment method in fig. 1.
In the figure:
1. a separation structure; 11. a sewage separating cylinder; 12. a sludge separating cylinder; 13. a conveying member; 131. a screw rod; 132. a central rod; 133. a connecting rod; 14. a driving member; 141. a motor; 15. a second separation cylinder; 16. an outlet;
2. a first precipitation zone; 21. a water outlet; 22. a sludge port;
3. a second precipitation zone; 31. a mud inlet; 32. a mud outlet;
4. a mud discharging assembly; 41. a first connection pipe; 42. a sludge pump; 43. a second connection pipe;
5. a treatment tank; 51. a mud inlet pipe; 52. a partition plate; 53. a can lid;
6. an overflow weir; 7. the filter plates were concentrated.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a sludge drying pretreatment device and a sludge drying pretreatment method, which are respectively described below.
As shown in fig. 1, in one embodiment of the present invention, a sludge drying pretreatment apparatus is provided, which includes a separation structure 1, a first precipitation zone 2, a second precipitation zone 3, and a sludge discharge assembly 4.
The separation structure 1 comprises a sewage separation cylinder 11, a sludge separation cylinder 12, a conveying member 13 and a driving member 14, wherein one end of the sewage separation cylinder 11 is provided with a sludge inlet, the other end of the sewage separation cylinder is communicated with the interior of the sludge separation cylinder 12, a plurality of first sieve holes for filtering out sewage are formed in the peripheral wall of the sewage separation cylinder 11, a plurality of second sieve holes for filtering out sludge are formed in the peripheral wall of the sludge separation cylinder 12, and the diameter of the first sieve holes is smaller than that of the second sieve holes; the conveying member 13 is arranged between the sewage separating cylinder 11 and the sludge separating cylinder 12 in a penetrating manner, and comprises a driving section arranged in the sewage separating cylinder 11 and a connecting section arranged in the sludge separating cylinder 12, wherein the driving section is used for conveying sludge from the sewage separating cylinder 11 to the sludge separating cylinder 12 when rotating, the connecting section is connected with the sludge separating cylinder 12, and the driving member 14 is connected with the conveying member 13 and is used for driving the conveying member 13 to rotate.
The feeding end of the first sedimentation zone 2 corresponds to the sewage discharge end of the sewage separating cylinder 11, and a water outlet 21 and a sludge outlet 22 are respectively arranged on the upper side and the lower side of the first sedimentation zone 2.
The feeding end of the second sedimentation zone 3 corresponds to the sewage discharge end of the sludge separating cylinder 12, and a side surface and a lower side of the second sedimentation zone 3 are respectively provided with a sludge inlet 31 and a sludge outlet 32.
The feeding end of the sludge discharging assembly 4 is communicated with the sludge port 22, and the discharging end of the sludge discharging assembly is communicated with the sludge inlet 31 so as to convey the sludge in the first sedimentation zone 2 into the second sedimentation zone 3.
In the device, sludge to be treated is discharged into the sewage separating cylinder 11 through a sludge inlet of the sewage separating cylinder 11, sewage in the sewage separating cylinder 11 is filtered out through a first sieve hole, water contained in the sewage is filtered into a first sedimentation zone 2, a driving section of a conveying part 13 is driven by a driving part 14 to rotate, the sludge is in the sludge separating cylinder 12, the driving part 14 drives a connecting section to rotate so as to drive the sludge separating cylinder 12 to centrifugally rotate, and the generated centrifugal force is larger than the adhesion force of the sludge under the high-speed rotation of the sludge separating cylinder 12, so that the sludge and small-size solid particles are thrown out through a second sieve hole under the action of the centrifugal force, and the solid particles larger than the preset size are remained in the sludge separating cylinder 12, and meanwhile, part of the large-size solid particles which can be crushed can collide with the sludge separating cylinder 12 under the centrifugal rotation to be crushed, so that the primary separation of the water, the sludge and the large-size solid substances in the sludge to be treated is realized; the sewage filtered by the sewage separating cylinder 11 flows into the first sedimentation zone 2, after the sewage is precipitated in the first sedimentation zone 2, the water body is discharged through the water outlet 21, a small amount of sludge contained in the water body is deposited at the bottom of the first sedimentation zone 2, and the sludge in the first sedimentation zone 2 is conveyed into the second sedimentation zone 3 through sludge discharge; the sludge filtered by the sludge separating cylinder 12 and the sludge deposited at the bottom of the first sedimentation zone 2 are discharged to the second sedimentation zone 3, and the sludge is sedimented and concentrated in the second sedimentation zone 3, so that the water content of the sludge is further reduced, and the concentrated sludge can be discharged through the sludge outlet 32.
In order to further reduce the sludge content in the filtered sewage, as shown in fig. 1, in some embodiments, a second separating drum 15 is sleeved on the outer peripheral side of the sewage separating drum 11, the second separating drum 15 is fixedly connected with the sewage separating drum 11, the drum wall of the second separating drum 15 is arranged at intervals between the drum wall of the sewage separating drum 11, the drum wall of the second separating drum 15 is provided with a sieve opening with the same pore diameter as the first sieve opening, one side of the second separating drum 15 is provided with an outlet 16 corresponding to the second sedimentation zone 3, the second separating drum 15 and the sewage separating drum 11 are coaxially arranged, and are obliquely arranged, so that the sewage filtered by the sewage separating drum 11 flows into the second separating drum 15, after secondary filtration by the second separating drum 15, the water medium in the sewage is discharged to the first sedimentation zone 2 through filtration, and finally the sludge falls into the second sedimentation zone 3 along the drum wall flow of the second separating drum 15.
As shown in fig. 1, in some embodiments, the sludge discharging assembly 4 includes a first connecting pipe 41, a sludge pump 42 and a second connecting pipe 43, where the sludge inlet 31 of the sludge pump 42 is connected to one end of the first connecting pipe 41, the other end of the first connecting pipe 41 is disposed at the sludge inlet 22, the sludge outlet end of the sludge pump 42 is connected to one end of the second connecting pipe 43, and one end of the second connecting pipe 43 is disposed at the sludge inlet 31, so as to pump the sludge deposited at the bottom of the first settling zone 2 into the second settling zone 3.
As shown in fig. 1 and 3, in some embodiments, the sludge drying pretreatment device further includes a treatment tank 5, a sludge inlet pipe 51 is disposed at a top end of one side of the treatment tank 5, one end of the sludge inlet pipe 51 penetrates through a sludge inlet and is communicated with an interior of the sewage separation tank 11, the separation structure 1 is disposed in the treatment tank 5, a partition plate 52 is disposed at a lower portion of the treatment tank 5 to partition a lower portion of the treatment tank 5 to form a first sedimentation zone 2 and a second sedimentation zone 3, the first sedimentation zone 2 is located below the sewage separation tank 11, the second sedimentation zone 3 is located below the sludge separation tank 12, the separation structure 1, the first sedimentation zone 2 and the second sedimentation zone 3 are disposed inside the treatment tank 5, and pretreatment procedures of sludge are performed inside the treatment tank 5, so that storage equipment and conveying equipment disposed in a treatment process can be reduced, and cost can be reduced.
To avoid dispersion of the sludge at the bottom of the first sedimentation zone 2 or the second sedimentation zone 3 during sedimentation, as shown in fig. 1, in some embodiments, the cross-sectional area of the first sedimentation zone 2 and the cross-sectional area of the second sedimentation zone 3 are both reduced sequentially from top to bottom.
Further, as shown in fig. 1 and 4, an overflow weir 6 is arranged on a partition plate 52 and is communicated with the inside of the first sedimentation zone 2 and the inside of the second sedimentation zone 3, a concentration filter plate 7 is arranged above the second sedimentation zone 3 and below the overflow weir 6, a compression hole is arranged on the concentration filter plate 7 in an inclined manner, the sewage is continuously compressed and precipitated in a conical cavity at the bottom of the second sedimentation zone 3 under the guiding action of the compression hole of the concentration filter plate 7, and the sewage in the second sedimentation zone 3 can flow into the first sedimentation zone 2 through the overflow weir 6 and can be discharged outside through a water outlet 21 arranged on the first sedimentation zone 2.
To avoid sludge remaining between the sewage separation cylinder 11 and the sludge separation cylinder 12, as shown in fig. 2, in some embodiments, the diameter of the sewage separation cylinder 11 is set smaller than the diameter of the sludge separation cylinder 12, the thicknesses of the sewage separation cylinder 11 and the sludge separation cylinder are the same, and a part of one end of the sewage separation cylinder 11 extends into the sludge separation cylinder 12, so that the sludge discharged from the sewage separation cylinder 11 can be completely contained by the sludge separation cylinder 12, the sludge is prevented from remaining, the sewage separation cylinder 11 and the sludge separation cylinder 12 are both arranged in an inclined manner, and both the sewage separation cylinder 11 and the sludge separation cylinder 12 are gradually inclined downwards from one end close to the sludge inlet of the sewage separation cylinder 11 to the other end so that the sludge flows in the sewage separation cylinder 11 and the sludge separation cylinder 12, and the overflow of the sludge at the cylinder mouth of the sludge separation cylinder 12 is avoided.
Further, because the sludge is obliquely arranged, large-particle solids flowing to the inside of the sludge are concentrated at the lower end of the sludge separating cylinder 12 in the rotation process of the sludge separating cylinder 12, a discharging pipe and a valve are arranged at the bottommost end of the sludge separating cylinder 12, a tank cover 53 which can be opened is arranged on the corresponding side of the treatment tank 5, a handle is arranged on the tank cover 53, after the treatment is completed, the valve is rotated to be positioned below the sludge separating cylinder 12, the tank cover 53 and the valve are sequentially opened, and the large-particle solids in the sludge separating cylinder 12 can be discharged.
Further, in order to prevent the sludge separating cylinder 12 from throwing out the sludge to the inside of the first settling zone 2 under the centrifugal action, a baffle is provided at a position between the sewage separating cylinder 11 and the sludge separating cylinder 12 in the treatment tank 5.
As shown in fig. 2 and 5, in some embodiments, the driving member 14 includes a motor 141, the motor 141 is a motor capable of forward and reverse rotation, the motor 141 is disposed on one side of the sludge separating cylinder 12, and a driving end of the motor 141 is connected to the central rod 132 for driving the central rod 132 and the screw rod 131 to rotate.
The driving section comprises a screw rod 131, the screw rod 131 is rotationally arranged in the sewage separating cylinder 11, the screw rod 131 is connected with a driving shaft of a motor 141 through a center rod 132, so that the motor 141 can drive the screw rod 131 to rotate, materials are led into the sludge separating cylinder 12 through the rotation of the screw rod 131, meanwhile, the motor 141 can also drive the screw rod 131 to rotate reversely, and when the screw rod 131 rotates reversely or stops, sludge in the sewage separating cylinder 11 can be conveyed to the direction of a sludge inlet of the sewage separating cylinder or stays in the sewage separating cylinder 11, so that the filtering time of water in the sludge is prolonged.
The linkage segment includes center pole 132 and a plurality of connecting piece of evenly arranging along the length direction of center pole 132, inside that center pole 132 and connecting piece all were located mud separating drum 12, and the center pin fixed connection of center pole 132's one end and screw rod 131, center pole 132 other end and the fixed continuous of drive shaft of motor 141, the connecting piece includes a plurality of connecting rod 133 that set up along center pole 132 circumference, specifically, can adopt a plurality of different lengths or telescopic connecting rod 133, the central axis of center pole 132 has certain skew with the central axis of mud separating drum 12, center pole 132 passes through connecting rod 133 and mud separating drum 12 fixed connection, through the rotation of motor 141 through center pole 132 drive screw rod 131, still can carry out centrifugal rotation through center pole 132 drive mud separating drum 12.
In another embodiment of the present invention, as shown in fig. 6, a sludge drying pretreatment method is provided, which is applicable to the sludge drying pretreatment device, and the method includes:
s100: the sludge enters the sewage separation cylinder 11 through a sludge inlet of the sewage separation cylinder 11, the sewage in the sewage separation cylinder 11 is filtered out through a first sieve mesh, and then the driving section of the conveying member 13 is driven to rotate by the driving member 14, so that the sludge in the sewage separation cylinder 11 is conveyed into the sludge separation cylinder 12;
s200: the sludge is in the sludge separating cylinder 12, the connecting section is driven to rotate by the driving piece 14 to drive the sludge separating cylinder 12 to centrifugally rotate, the sludge and small-size solid particles are thrown out through the second sieve holes under the action of the centrifugal force, and the solid particles with the size larger than the preset size are remained in the sludge separating cylinder 12;
s300: the sewage filtered by the sewage separating cylinder 11 flows into the first sedimentation zone 2, after sedimentation is carried out in the first sedimentation zone 2, water is discharged through a water outlet 21, a small amount of sludge contained in the water is deposited at the bottom of the first sedimentation zone 2, and the sludge in the first sedimentation zone 2 is conveyed into the second sedimentation zone 3 through sludge discharge;
s400: the sludge filtered by the sludge separating drum 12 and deposited at the bottom of the first sedimentation zone 2 are discharged to the second sedimentation zone 3, and after sedimentation and concentration are carried out in the second sedimentation zone 3, the sludge is discharged through a sludge outlet 32.
The present invention also provides a more specific embodiment for explaining the steps S100 to S400:
step one: the sludge to be treated enters the interior of the sewage separating cylinder 11 through the sludge inlet pipe 51, the sewage in the sewage separating cylinder 11 is filtered through the first sieve holes, then the filtered sewage flows into the second separating cylinder 15 outside the sewage separating cylinder 11, the sewage is subjected to secondary filtration through the second separating cylinder 15, the sewage at the filtering position is discharged to the first sedimentation area 2, the sludge filtered by the second separating cylinder 15 can be discharged to the second sedimentation area 3 through the outlet 16, and during filtration, the motor 141 drives the screw rod 131 to rotate through the central rod 132 to convey the sludge in the sewage separating cylinder 11 into the sludge separating cylinder 12;
step two: after the sludge is conveyed into the sludge separation cylinder 12 through the screw rod 131, the motor 141 drives the sludge separation cylinder 12 to centrifugally rotate through the central rod 132 and the connecting rod 133, and the sludge and small-size solid particles are thrown out through the second sieve holes under the action of centrifugal force, and the solid particles which do not meet the requirement of the subsequent flow are remained in the sludge separation cylinder 12;
step three: the sewage filtered by the sewage separating cylinder 11 flows into the first sedimentation zone 2, after sedimentation is carried out in the first sedimentation zone 2, water is discharged through the water outlet 21, a small amount of sludge contained in the water is deposited at the bottom of the first sedimentation zone 2, and the sludge deposited at the bottom of the first sedimentation zone 2 can be conveyed into the second sedimentation zone 3 through the first connecting pipe 41 and the second connecting pipe 43 by the sludge pump 42;
step four: the sludge deposited at the bottom of the first sedimentation zone 2 is discharged to the bottom of the second sedimentation zone 3, the sludge filtered by the sludge separating cylinder 12 is compressed and precipitated at the bottom of the second sedimentation zone 3 under the guiding action of the compression holes of the concentration filter plate 7, the water in the second sedimentation zone 3 is led into the first sedimentation cavity through the overflow weir 6, and finally the sludge is discharged through the sludge outlet 32.
According to the invention, through the arranged separation structure 1, water, sludge and large-size solid matters contained in sludge to be treated can be subjected to preliminary separation treatment, unqualified large-size solid particles are reserved in the sludge separation cylinder 12, and cannot be mixed in the sludge to carry out subsequent drying procedures together with the sludge, so that the impurities contained in the sludge are removed, the blocking failure of a subsequent conveying device or a shaping device of drying equipment is avoided, meanwhile, the water content of the sludge can be filtered, the sludge drying treatment efficiency is improved;
according to the invention, the filtered sewage and sludge are further treated through the first sedimentation zone 2 and the second sedimentation zone 3, the sludge precipitated in the first sedimentation zone 2 can be pumped to the second sedimentation zone 3 through the sludge discharge assembly 4, the precipitated sewage and sludge can be respectively sent out through the water outlet 21 and the sludge port 22 for subsequent classification treatment, and the impurity content in the sewage and the water content in the sludge can be respectively reduced by the first sedimentation zone 2 and the second sedimentation zone 3, so that the subsequent treatment of the sludge and the sewage is facilitated.
The above-described embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made in accordance with the technical idea of the present invention shall be included in the scope of the claims of the present invention.
Claims (10)
1. A sludge drying pretreatment device, comprising:
the separation structure comprises a sewage separation cylinder, a sludge separation cylinder, a conveying part and a driving part, wherein one end of the sewage separation cylinder is provided with a sludge inlet, the other end of the sewage separation cylinder is communicated with the interior of the sludge separation cylinder, a plurality of first sieve holes for filtering out sewage are formed in the peripheral wall of the sewage separation cylinder, and a plurality of second sieve holes for filtering out sludge are formed in the peripheral wall of the sludge separation cylinder; the conveying piece is arranged between the sewage separating cylinder and the interior of the sludge separating cylinder in a penetrating way and comprises a driving section arranged in the sewage separating cylinder and a connecting section arranged in the sludge separating cylinder, wherein the driving section is used for conveying sludge from the sewage separating cylinder to the sludge separating cylinder when rotating, the connecting section is connected with the sludge separating cylinder, and the driving piece is connected with the conveying piece and is used for driving the conveying piece to rotate;
the feeding end of the first sedimentation zone corresponds to the sewage discharge end of the sewage separation cylinder, and a water outlet and a sludge port are respectively arranged on the upper side and the lower side of the first sedimentation zone;
the feeding end of the second sedimentation zone corresponds to the sewage discharge end of the sludge separation cylinder, and one side and the lower side of the second sedimentation zone are respectively provided with a sludge inlet and a sludge outlet;
the feeding end of the sludge discharging assembly is communicated with the sludge inlet, and the discharging end of the sludge discharging assembly is communicated with the sludge inlet so as to convey sludge in the first sedimentation zone into the second sedimentation zone.
2. The sludge drying pretreatment apparatus of claim 1 further comprising a treatment tank, wherein the separation structure is built in the treatment tank, and a partition plate is provided at a lower portion of the treatment tank to partition the lower portion of the treatment tank to form the first precipitation zone and the second precipitation zone.
3. The sludge drying pretreatment apparatus of claim 2 wherein the cross-sectional area of the first sedimentation zone and the cross-sectional area of the second sedimentation zone are both sequentially reduced from top to bottom.
4. The sludge drying pretreatment apparatus of claim 1 wherein the sewage separation cylinder and the sludge separation cylinder are disposed obliquely and gradually incline downward from one end to the other end near the sludge inlet of the sewage separation cylinder.
5. The sludge drying pretreatment apparatus of claim 1 or 4 wherein the diameter of the sewage separation cylinder is smaller than the diameter of the sludge separation cylinder, and the diameter of the first mesh is smaller than the diameter of the second mesh.
6. The sludge drying pretreatment device according to claim 1, wherein a second separation cylinder is sleeved on the outer peripheral side of the sewage separation cylinder, the cylinder wall of the second separation cylinder and the cylinder wall of the sewage separation cylinder are arranged at intervals, the cylinder wall of the second separation cylinder is provided with sieve holes with the same aperture as the first sieve holes, one side of the second separation cylinder is provided with an outlet corresponding to the second sedimentation zone, and the second separation cylinder and the sewage separation cylinder are coaxially arranged.
7. The sludge drying pretreatment apparatus according to claim 1, wherein the driving section comprises a screw rod rotatably provided inside the sewage separation cylinder for blocking or transporting sludge;
the connecting section comprises a center rod and a plurality of connecting pieces which are uniformly arranged along the length direction of the center rod, the center rod and the connecting pieces are all arranged in the sludge separating cylinder, one end of the center rod is fixedly connected with the central shaft of the spiral rod, the other end of the center rod is connected with the driving end of the driving piece, the connecting pieces comprise a plurality of connecting rods which are circumferentially arranged along the center rod, and the center rod is fixedly connected with the sludge separating cylinder through the connecting rods;
the driving piece comprises a motor, the motor is arranged on one side of the sludge separating cylinder, and the driving end of the motor is connected with the center rod and used for driving the center rod and the spiral rod to rotate.
8. The sludge drying pretreatment device according to claim 1, wherein the sludge discharging assembly comprises a first connecting pipe, a sludge pump and a second connecting pipe, a sludge inlet of the sludge pump is connected with one end of the first connecting pipe, the other end of the first connecting pipe is arranged at the sludge inlet, a sludge outlet of the sludge pump is connected with one end of the second connecting pipe, and one end of the second connecting pipe is arranged at the sludge inlet.
9. The sludge drying pretreatment apparatus according to claim 1, wherein a concentrating filter plate is provided above the second precipitation zone, and the concentrating filter plate is provided with a compression hole which is obliquely arranged.
10. A sludge drying pretreatment method, characterized in that it is applied to the sludge drying pretreatment apparatus according to any one of claims 1 to 9, comprising:
s100: the method comprises the steps that sludge enters the sewage separating cylinder through a sludge inlet of the sewage separating cylinder, sewage in the sewage separating cylinder is filtered out through first sieve holes, and a driving section of a conveying member is driven by a driving member to rotate so as to convey the sludge in the sewage separating cylinder into the sludge separating cylinder;
s200: the sludge is in the sludge separating cylinder, the connecting section is driven by the driving piece to rotate so as to drive the sludge separating cylinder to centrifugally rotate, the sludge and small-size solid particles are thrown out through the second sieve holes under the action of the centrifugal force, and the solid particles larger than the preset size are remained in the sludge separating cylinder;
s300: the sewage filtered by the sewage separating cylinder flows into a first sedimentation zone, after sedimentation is carried out in the first sedimentation zone, water is discharged through a water outlet, a small amount of sludge contained in the water is deposited at the bottom of the first sedimentation zone, and the sludge in the first sedimentation zone is conveyed into a second sedimentation zone through sludge discharge;
s400: the sludge filtered by the sludge separating cylinder and the sludge deposited at the bottom of the first sedimentation zone are discharged to the second sedimentation zone, and after sedimentation and concentration are carried out in the second sedimentation zone, the sludge is discharged through a sludge outlet.
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| CN202311171235.2A CN117088589A (en) | 2023-09-11 | 2023-09-11 | Sludge drying pretreatment device and method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0760300A (en) * | 1993-08-24 | 1995-03-07 | Kawasaki Heavy Ind Ltd | Treatment for concentrating and dehydrating sewage sludge and device therefor |
| KR20020026686A (en) * | 2000-10-02 | 2002-04-12 | 이 상 종 | Centrifugal dehydrator for sludge |
| CN106242223A (en) * | 2015-09-09 | 2016-12-21 | 无锡亮慧环保机械有限公司 | Ultrasound wave separate type novel sludge condensation processing means |
| CN212283044U (en) * | 2020-03-20 | 2021-01-05 | 侯仲宝 | Sludge collection device for sewage treatment |
| CN114275991A (en) * | 2020-09-28 | 2022-04-05 | 中国石油天然气集团有限公司 | Granulating sludge dewatering device |
| CN217988643U (en) * | 2021-11-29 | 2022-12-09 | 湖南健伟通机械设备有限公司 | Mud-water separation device |
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2023
- 2023-09-11 CN CN202311171235.2A patent/CN117088589A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0760300A (en) * | 1993-08-24 | 1995-03-07 | Kawasaki Heavy Ind Ltd | Treatment for concentrating and dehydrating sewage sludge and device therefor |
| KR20020026686A (en) * | 2000-10-02 | 2002-04-12 | 이 상 종 | Centrifugal dehydrator for sludge |
| CN106242223A (en) * | 2015-09-09 | 2016-12-21 | 无锡亮慧环保机械有限公司 | Ultrasound wave separate type novel sludge condensation processing means |
| CN212283044U (en) * | 2020-03-20 | 2021-01-05 | 侯仲宝 | Sludge collection device for sewage treatment |
| CN114275991A (en) * | 2020-09-28 | 2022-04-05 | 中国石油天然气集团有限公司 | Granulating sludge dewatering device |
| CN217988643U (en) * | 2021-11-29 | 2022-12-09 | 湖南健伟通机械设备有限公司 | Mud-water separation device |
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