CN219839618U - Sludge dewatering treatment system - Google Patents
Sludge dewatering treatment system Download PDFInfo
- Publication number
- CN219839618U CN219839618U CN202321117086.7U CN202321117086U CN219839618U CN 219839618 U CN219839618 U CN 219839618U CN 202321117086 U CN202321117086 U CN 202321117086U CN 219839618 U CN219839618 U CN 219839618U
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- CN
- China
- Prior art keywords
- sludge
- dewatering treatment
- screw conveyor
- treatment system
- flocculation reaction
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- 239000010802 sludge Substances 0.000 title claims abstract description 103
- 238000005189 flocculation Methods 0.000 claims abstract description 31
- 230000016615 flocculation Effects 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 230000018044 dehydration Effects 0.000 claims abstract description 17
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000003814 drug Substances 0.000 claims abstract description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 5
- 239000004571 lime Substances 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 208000005156 Dehydration Diseases 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 24
- 239000003607 modifier Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 7
- 239000012065 filter cake Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000036571 hydration Effects 0.000 description 4
- 238000006703 hydration reaction Methods 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- 239000011148 porous material Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model discloses a sludge dewatering treatment system, which belongs to the technical field of sludge treatment and comprises a pre-dewatering treatment unit, a deep dewatering treatment unit and a crushing drying unit which are sequentially connected, wherein the pre-dewatering treatment unit comprises a screw conveyor, a dense filter hole is arranged on a shell of the screw conveyor, a first medicine feeder is arranged on the screw conveyor, a flocculation reaction tank is arranged at the output end side of the screw conveyor, a lime slurry tank is arranged at one side of the flocculation reaction tank, and the flocculation reaction tank is connected with the deep dewatering treatment unit. According to the utility model, the sludge with the water content of 98% is conveyed into the flocculation reaction tank through the screw conveyor, and the sludge modifier is added into the screw conveyor through the first medicine feeder in the conveying process to condition and modify the sludge, so that the specific resistance of the sludge is reduced, and the filtration speed and the dehydration depth of the sludge are improved.
Description
Technical Field
The utility model belongs to the technical field of sludge treatment, and particularly relates to a sludge dewatering treatment system.
Background
At present, the sewage treatment industry in China develops rapidly, sewage treatment facilities are more and more, sewage treatment capacity is increased year by year, and accordingly, sludge yield is larger and larger. The untreated sludge has the water content of 98 percent, is huge in volume, complex and unstable in property, difficult to treat and easy to cause environmental pollution. The sludge is required to be dehydrated to reduce the water content before disposal, and then is subjected to recycling disposal such as agricultural utilization, landfill, incineration and the like.
The dehydration treatment equipment in the prior art has the problem of low efficiency, and meanwhile, the heavy metal concentration of the soil is increased due to the agricultural utilization of the sludge; sludge landfill occupies a large amount of land resources and causes potential environmental hazards; the sludge incineration cost is high, the investment is large, and serious air pollution is also caused in the incineration process.
Disclosure of Invention
To solve the problems set forth in the background art. The utility model provides a sludge dewatering treatment system, which has the characteristics of good sludge dewatering effect and capability of recycling dewatered sludge.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a sludge dewatering processing system, includes the pre-dewatering processing unit, degree of depth dewatering processing unit and the broken drying unit that connect gradually, and wherein, pre-dewatering processing unit includes screw conveyer, is equipped with intensive filtration pore on screw conveyer's the casing, installs first doser on the screw conveyer, and screw conveyer's output side is equipped with flocculation reaction pond, and one side of flocculation reaction pond is equipped with lime slurry pond, and flocculation reaction pond is connected with degree of depth dewatering processing unit.
In order to carry out deep dehydration on the sludge, a filter cake with the water content of 60% is obtained, and further, the deep dehydration treatment unit comprises a plate-and-frame filter press, and the inlet end of the plate-and-frame filter press is connected with the outlet end of the flocculation reaction tank.
In order to carry out purification treatment on filtrate, a part of clear water obtained after treatment flows back into the plate-and-frame filter press and is used for cleaning filter cloth, and other parts can be directly discharged.
In order to carry out drying treatment on the filter cake, the water content of the sludge after the drying treatment is reduced to 40 percent, and further, the deep dehydration treatment unit further comprises a steam dryer, and the inlet end of the steam dryer is connected with the outlet end of the plate-and-frame filter press.
In order to carry out purification treatment on the tail gas, the tail gas can be directly discharged after reaching the treatment standard, and further, the gas outlet of the steam dryer is connected with a tail gas treatment device, and the gas outlet of the tail gas treatment device is connected with a draught fan.
In order to crush the sludge filter cake, a multi-stage crushing mode is adopted to ensure full crushing of the sludge filter cake, so that sludge with small particle size is obtained, and then the sludge is further dried through a drum dryer, so that subsequent treatment of the sludge is facilitated.
For precipitating the sludge in the filtered water by the screw conveyor, a sedimentation tank is further included, and the screw conveyor is arranged above the sedimentation tank.
In order to ensure that the precipitated sludge can be mixed with the sludge treated by the screw conveyor, the effect of the sludge modifier is ensured, and furthermore, the output end side of the screw conveyor is provided with a mixed sludge storage tank, and the outlet end of the precipitation tank is connected with the inlet end of the mixed sludge storage tank.
In order to add ferric trichloride, positive charges are formed through hydration, negative charges of sludge particles can be neutralized, flocculation effect in a flocculation reaction tank is improved, and further, a tubular mixer is arranged at the outlet end side of the mixed sludge storage tank, a second medicine feeder is arranged on the tubular mixer, and the outlet end of the tubular mixer is connected with the flocculation reaction tank.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the sludge with the water content of 98% is conveyed into the flocculation reaction tank through the screw conveyor, and the sludge modifier is added into the screw conveyor through the first medicine feeder in the conveying process to condition and modify the sludge, so that the specific resistance of the sludge is reduced, and the filtration speed and the dehydration depth of the sludge are improved;
2. the arrangement of the screw conveyor can fully mix the sludge modifier with the sludge, and in the conveying process of the screw conveyor, the water in the sludge can be discharged through the filter holes, so that the water content of the sludge is reduced to 90%;
3. the utility model carries out deep dehydration on sludge through a plate-and-frame filter press to obtain a filter cake with the water content of 60%, the sludge filter cake obtained through treatment of the plate-and-frame filter press is conveyed into a steam dryer by a sealing belt conveyor to carry out drying treatment, and the water content of the dried sludge is reduced to 40%;
4. the crushing and drying unit comprises a multi-stage crusher and a drum dryer, and is used for crushing the sludge filter cake, fully crushing the sludge filter cake to obtain sludge with small particle size, and further drying the sludge by the drum dryer so as to facilitate the subsequent treatment of the sludge;
5. according to the utility model, the ferric trichloride is added into the tubular mixer through the second medicine feeder, positive charges are formed through hydration, negative charges of sludge particles can be neutralized, and flocculation effect in the flocculation reaction tank is improved.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:
FIG. 1 is a system block diagram of the present utility model;
FIG. 2 is a system block diagram of a pre-dewatering unit of the present utility model;
FIG. 3 is a system block diagram of the deep dehydration treatment unit of the present utility model;
FIG. 4 is a system block diagram of a crushing and drying unit of the present utility model;
in the figure: 1. a pre-dehydration treatment unit; 2. a deep dehydration treatment unit; 3. a crushing and drying unit; 31. a multistage crusher; 32. a drum dryer; 4. a screw conveyor; 41. a first doser; 42. a sedimentation tank; 5. mixing a mud storage pool; 6. a tube mixer; 61. a second doser; 7. a flocculation reaction tank; 71. lime slurry tanks; 8. a plate and frame filter press; 81. a waste liquid treatment device; 9. a steam dryer; 91. a tail gas treatment device; 92. and (5) a draught fan.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1-4, the present utility model provides the following technical solutions: the utility model provides a sludge dewatering treatment system, including the pre-dewatering processing unit 1 that connects gradually, degree of depth dewatering processing unit 2 and broken drying unit 3, wherein, pre-dewatering processing unit 1 includes screw conveyer 4, be equipped with intensive filtration pore on the casing of screw conveyer 4, the diameter of filtration pore is 0.2-0.5mm, installs first doser 41 on the screw conveyer 4, the output side of screw conveyer 4 is equipped with flocculation reaction tank 7, one side of flocculation reaction tank 7 is equipped with lime slurry pond 71, flocculation reaction tank 7 is connected with degree of depth dewatering processing unit 2.
By adopting the technical scheme, the sludge with the water content of 98% is conveyed into the flocculation reaction tank 7 through the screw conveyor 4, and the sludge modifier is added into the screw conveyor 4 through the first medicine feeder 41 to condition and modify the sludge in the conveying process, so that the specific resistance of the sludge is reduced, and the filtration speed and the dehydration depth of the sludge are improved; the arrangement of the screw conveyor 4 can fully mix the sludge modifier with the sludge, and in the conveying process of the screw conveyor 4, the water in the sludge can be discharged through the filter holes, so that the water content of the sludge is reduced to 90%.
Specifically, the deep dehydration treatment unit 2 comprises a plate-and-frame filter press 8, and the inlet end of the plate-and-frame filter press 8 is connected with the outlet end of the flocculation reaction tank 7.
By adopting the technical scheme, the sludge is deeply dehydrated through the plate-and-frame filter press 8, and a filter cake with the water content of 60% is obtained.
Specifically, the deep dehydration treatment unit 2 further comprises a steam dryer 9, and the inlet end of the steam dryer 9 is connected with the outlet end of the plate-and-frame filter press 8.
By adopting the technical scheme, the sludge filter cake obtained by treatment of the plate-and-frame filter press 8 is conveyed into the steam dryer 9 by the sealing belt conveyor to be dried, and the water content of the dried sludge is reduced to 40%.
Specifically, the crushing and drying unit 3 includes a multistage crusher 31 and a drum dryer 32, wherein an inlet end of the multistage crusher 31 is connected to an outlet end of the steam dryer 9, and an outlet end of the multistage crusher 31 is connected to an inlet end of the drum dryer 32.
By adopting the technical scheme, the sludge filter cake is crushed, the full crushing of the sludge filter cake is ensured by adopting a multi-stage crushing mode, the sludge with small particle size is obtained, and then the sludge is further dried by the drum dryer 32, so that the subsequent treatment of the sludge is facilitated.
Example 2
This embodiment differs from embodiment 1 in that: specifically, a waste liquid treatment device 81 is provided on one side of the plate-and-frame filter press 8, and a liquid outlet of the plate-and-frame filter press 8 is communicated with a liquid inlet of the waste liquid treatment device.
By adopting the technical scheme, the filtrate is purified, a part of clean water obtained after treatment flows back into the plate-and-frame filter press 8 for cleaning filter cloth, and other parts can be directly discharged.
Example 3
This embodiment differs from embodiment 1 in that: specifically, the gas outlet of the steam dryer 9 is connected with a tail gas treatment device 91, and the gas outlet of the tail gas treatment device 91 is connected with a draught fan 92.
By adopting the technical scheme, the mixed gas in the steam dryer 9 is sucked into the tail gas treatment device 91 for purification treatment, and can be directly discharged after reaching the treatment standard.
Example 4
This embodiment differs from embodiment 1 in that: specifically, the device also comprises a sedimentation tank 42, and the screw conveyor 4 is arranged above the sedimentation tank 42.
By adopting the technical scheme, the device is used for precipitating the sludge which is filtered out of water by the screw conveyor 4.
Specifically, the output end side of the screw conveyor 4 is provided with a mixed mud storage tank 5, and the outlet end of the sedimentation tank 42 is connected with the inlet end of the mixed mud storage tank 5.
By adopting the technical scheme, the precipitated sludge can be mixed with the sludge treated by the screw conveyor 4, so that the effect of the sludge modifier is ensured.
Example 5
This embodiment differs from embodiment 1 in that: specifically, a tubular mixer 6 is arranged at the outlet end side of the mixing mud storage tank 5, a second medicine feeder 61 is arranged on the tubular mixer 6, and the outlet end of the tubular mixer 6 is connected with a flocculation reaction tank 7.
Through adopting above-mentioned technical scheme, add ferric trichloride through second doser 61 to tubular blender 6 in, form positive charge through the hydration, can neutralize the negative charge of mud granule, improve the flocculation effect in flocculation reaction tank 7.
In summary, the utility model conveys the sludge with the water content of 98% into the flocculation reaction tank 7 through the screw conveyor 4, and adds the sludge modifier into the screw conveyor 4 through the first drug feeder 41 to condition and modify the sludge in the conveying process, thereby reducing the specific resistance of the sludge and improving the filtration speed and the dehydration depth of the sludge; the arrangement of the screw conveyor 4 can fully mix the sludge modifier with the sludge, and in the conveying process of the screw conveyor 4, the water in the sludge can be discharged through the filter holes, so that the water content of the sludge is reduced to 90%; the utility model carries out deep dehydration on sludge through a plate-and-frame filter press 8 to obtain a filter cake with the water content of 60%, the sludge filter cake obtained by treatment of the plate-and-frame filter press 8 is conveyed into a steam dryer 9 by a sealing belt conveyor to be dried, and the water content of the dried sludge is reduced to 40%; the crushing and drying unit 3 comprises a multi-stage crusher 31 and a drum dryer 32, and is used for crushing a sludge filter cake, fully crushing the sludge filter cake to obtain sludge with small particle size, and further drying the sludge by the drum dryer 32 so as to facilitate the subsequent treatment of the sludge; in the utility model, the ferric trichloride is added into the tubular mixer 6 through the second medicine feeder 61, positive charges are formed through hydration, negative charges of sludge particles can be neutralized, and flocculation effect in the flocculation reaction tank 7 is improved.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. A sludge dewatering treatment system is characterized in that: the device comprises a pre-dewatering treatment unit, a deep dewatering treatment unit and a crushing and drying unit which are sequentially connected, wherein the pre-dewatering treatment unit comprises a screw conveyor, dense filter holes are formed in a shell of the screw conveyor, a first chemical feeder is arranged on the screw conveyor, a flocculation reaction tank is arranged at the output end side of the screw conveyor, a lime slurry tank is arranged at one side of the flocculation reaction tank, and the flocculation reaction tank is connected with the deep dewatering treatment unit.
2. A sludge dewatering treatment system as claimed in claim 1, wherein: the deep dehydration treatment unit comprises a plate-and-frame filter press, and the inlet end of the plate-and-frame filter press is connected with the outlet end of the flocculation reaction tank.
3. A sludge dewatering treatment system as claimed in claim 2, wherein: and a waste liquid treatment device is arranged on one side of the plate-and-frame filter press, and a liquid outlet of the plate-and-frame filter press is communicated with a liquid inlet of the waste liquid treatment device.
4. A sludge dewatering treatment system as claimed in claim 2, wherein: the deep dehydration treatment unit further comprises a steam dryer, and the inlet end of the steam dryer is connected with the outlet end of the plate-and-frame filter press.
5. The sludge dewatering treatment system as claimed in claim 4, wherein: the gas outlet of the steam dryer is connected with a tail gas treatment device, and the gas outlet of the tail gas treatment device is connected with a draught fan.
6. The sludge dewatering treatment system as claimed in claim 4, wherein: the crushing and drying unit comprises a multi-stage crusher and a drum dryer, wherein the inlet end of the multi-stage crusher is connected with the outlet end of the steam dryer, and the outlet end of the multi-stage crusher is connected with the inlet end of the drum dryer.
7. A sludge dewatering treatment system as claimed in claim 1, wherein: still include the sedimentation tank, screw conveyer installs the top at the sedimentation tank.
8. The sludge dewatering treatment system as claimed in claim 7, wherein: the output end side of the screw conveyor is provided with a mixed mud storage tank, and the outlet end of the sedimentation tank is connected with the inlet end of the mixed mud storage tank.
9. The sludge dewatering treatment system of claim 8, wherein: the outlet end side of the mixing mud storage pool is provided with a tubular mixer, a second medicine feeder is arranged on the tubular mixer, and the outlet end of the tubular mixer is connected with the flocculation reaction pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321117086.7U CN219839618U (en) | 2023-05-09 | 2023-05-09 | Sludge dewatering treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321117086.7U CN219839618U (en) | 2023-05-09 | 2023-05-09 | Sludge dewatering treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219839618U true CN219839618U (en) | 2023-10-17 |
Family
ID=88302353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321117086.7U Active CN219839618U (en) | 2023-05-09 | 2023-05-09 | Sludge dewatering treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219839618U (en) |
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2023
- 2023-05-09 CN CN202321117086.7U patent/CN219839618U/en active Active
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