CN113186895A - In-situ multidimensional curing construction method for large-depth sludge pond - Google Patents
In-situ multidimensional curing construction method for large-depth sludge pond Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 145
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 71
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 74
- 238000005507 spraying Methods 0.000 claims abstract description 73
- 238000007711 solidification Methods 0.000 claims abstract description 68
- 230000008023 solidification Effects 0.000 claims abstract description 68
- 230000008569 process Effects 0.000 claims abstract description 63
- 238000010907 mechanical stirring Methods 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 21
- 239000002002 slurry Substances 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 4
- 239000002734 clay mineral Substances 0.000 claims description 4
- 239000000701 coagulant Substances 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 4
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 4
- 239000011707 mineral Substances 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 3
- 239000013078 crystal Substances 0.000 claims description 3
- 230000032823 cell division Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 7
- 239000007924 injection Substances 0.000 claims 7
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001089 mineralizing effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- 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
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Soil Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses an in-situ multidimensional curing construction method for a large-depth sludge pond, which comprises the following steps: carrying out in-situ solidification on shallow sludge in a sludge pond by adopting a mechanical stirring head to form a hard shell solidified body; carrying out in-situ solidification on deep sludge in the sludge pond by adopting a high-pressure jet grouting process to form a cylindrical solidified body; and carrying out in-situ solidification on deep sludge between the cylindrical solidified bodies by adopting a high-pressure swing spraying process to form a fan-shaped solidified body. By adopting the technical scheme, the sludge in the whole large-depth sludge pond is subjected to in-situ multidimensional solidification treatment, and the method is simple to operate, free of blind areas and good in solidification effect.
Description
Technical Field
The invention relates to the technical field of sludge remediation, in particular to an in-situ multi-dimensional curing construction method for a large-depth sludge pond.
Background
At present, municipal sludge treatment methods generated by domestic sewage treatment plants in China mainly adopt landfill, and most of sludge depends on natural pits or domestic garbage landfill sites and adopts a simple landfill mode to form a plurality of sludge ponds which are large and small. Because the sludge in the sludge pond is in a flow state and does not have any bearing capacity, engineering measures need to be taken to treat the sludge pond.
Sludge ponds are generally treated by drying incineration, vacuum preloading and other modes, the drying incineration needs to dewater and dry the sludge after excavation, secondary pollution control in the excavation process is difficult, the requirement on sludge dewatering is high, and the treatment cost is high; vacuum preloading is a common engineering measure for reinforcing a soft foundation, but the physical and chemical components of municipal sludge are substantially different from those of the soft foundation, the bearing capacity of the sludge after vacuum preloading is still low, and the sludge is subjected to secondary argillization when meeting water. Therefore, how to treat the current sludge pond, especially exploring the large-depth sludge pond repairing technology of more than 8 meters, has a promoting significance on the harmless treatment work of the stored sludge.
Disclosure of Invention
Aiming at the problems, the invention provides an in-situ multidimensional curing construction method for a large-depth sludge pond, which is characterized in that shallow sludge is cured in situ through a traditional mechanical stirring head, deep sludge is cured in situ through a high-pressure rotary spraying process and a high-pressure swing spraying process which assist curing agent slurry, and the sludge in the whole large-depth sludge pond is ensured to be cured and treated in an in-situ multidimensional manner, and the method is simple to operate, free of blind areas and good in curing effect.
In order to realize the aim, the invention provides an in-situ multi-dimensional curing construction method for a large-depth sludge pond, which comprises the following steps: carrying out in-situ solidification on shallow sludge in a sludge pond by adopting a mechanical stirring head to form a hard shell solidified body; carrying out in-situ solidification on the deep sludge in the sludge pond by adopting a high-pressure jet grouting process to form a cylindrical solidified body; and carrying out in-situ solidification on deep sludge between the cylindrical solidified bodies by adopting a high-pressure swing spraying process to form a fan-shaped solidified body.
In the above technical solution, preferably, the in-situ multidimensional solidification construction method for the large-depth sludge pond further includes: carrying out cell division on the sludge pond in advance; mechanically stirring the shallow sludge according to unit grids one by one and carrying out in-situ solidification; after the shallow sludge treatment of the whole sludge pond is completed, the deep sludge of a single cell is subjected to in-situ solidification by adopting a high-pressure rotary spraying process and a high-pressure swing spraying process in sequence, and then the high-pressure rotary spraying process and the high-pressure swing spraying process are sequentially carried out on the cells one by one until the deep sludge treatment of the whole sludge pond is completed.
In the above technical scheme, preferably, the stirring manner of the high-pressure rotary spraying process and the high-pressure swing spraying process adopts a double-pipe method, the spraying media are solidified agent slurry and compressed air, the spraying pressure of the slurry is 25-40 MPa, the flow rate of the slurry is 70-100L/min, the spraying pressure of the air is 0.6-0.8 MPa, and the flow rate of the air is 0.8-1.2 m3/min。
In the above technical solution, preferably, the spraying points of the high-pressure rotary spraying process and the high-pressure swing spraying process are distributed in a quincunx shape, the diameter of the cylindrical solidified body formed by the spraying points of the high-pressure rotary spraying process is 1.2-2.0 m, and the radius of the fan-shaped solidified body formed by the spraying points of the high-pressure swing spraying process is 1.8-3.0 m.
In the above technical solution, preferably, the cylindrical solidified body and the fan-shaped solidified body intersect with each other in a horizontal direction.
In the technical scheme, preferably, the lifting speed of the high-pressure rotary spraying process is 10-25 cm/min, the rotating speed is 8-25 r/min, the lifting speed of the high-pressure swing spraying process is 8-15 cm/min, the swing speed is 6-15 times/min, and the swing angle range is 30-90 degrees.
In the above technical solution, preferably, the curing agent slurry is prepared by compounding a silicate structuring agent, a carbonate structuring agent, an inorganic salt coagulant, a crystal mineral mineralizer, a clay mineral mineralizer, and a high molecular polymer coupling agent.
In the technical scheme, preferably, the depth of in-situ solidification of the shallow sludge is 0-8 m, the depth of in-situ solidification of the deep sludge is 7-25 m, and the depth of an overlapping region of the shallow sludge and the deep sludge in the vertical height is at least 1 m.
In the above technical solution, preferably, the shallow sludge is propelled from the periphery to the center of the sludge pond in the process of in-situ solidification of the shallow sludge according to the unit cells one by one.
In the above technical solution, preferably, the mechanical stirring head is two rollers driven by a hydraulic motor and provided with a stirring and mixing blade, the diameter is 75cm, the maximum output power is 160kw, and the rotation speed range is within 100 r/min.
Compared with the prior art, the invention has the beneficial effects that: shallow sludge is subjected to in-situ solidification through a traditional mechanical stirring head, deep sludge is subjected to in-situ solidification through a high-pressure rotary spraying process and a high-pressure swing spraying process which assist in solidifying medicament slurry, the sludge in the whole large and deep sludge pond is guaranteed to be subjected to in-situ multidimensional solidification treatment, and the method is simple to operate, free of blind areas and good in solidification effect.
Drawings
FIG. 1 is a schematic flow chart of an in-situ multi-dimensional curing construction method for a large-depth sludge pond according to an embodiment of the invention;
FIG. 2 is a schematic sectional view of a sludge pond after the construction method for in-situ multi-dimensional curing of a large-depth sludge pond according to an embodiment of the present invention is implemented;
FIG. 3 is a schematic distribution diagram of cylindrical solidified bodies and fan-shaped solidified bodies according to an embodiment of the invention.
In the drawings, the correspondence between each component and the reference numeral is:
1. shallow sludge, 2 deep sludge, 3 overlapping areas, 4 cylindrical solidified bodies and 5 fan-shaped solidified bodies.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in figures 1 and 2, the in-situ multi-dimensional solidification construction method for the large-depth sludge pond provided by the invention comprises the following steps: carrying out in-situ solidification on shallow sludge 1 in a sludge pond by adopting a mechanical stirring head to form a hard shell solidified body; carrying out in-situ solidification on deep sludge 2 in the sludge pond by adopting a high-pressure jet grouting process to form a cylindrical solidified body 4; and (3) carrying out in-situ solidification on the deep sludge 2 between the cylindrical solidified bodies 4 by adopting a high-pressure swing spraying process to form a fan-shaped solidified body 5.
In the embodiment, different processes are respectively adopted to carry out in-situ solidification treatment on sludge at different depths and different positions of a sludge pond, specifically, the method comprises the steps of carrying out in-situ solidification on shallow sludge 1 of the sludge pond by using a traditional mechanical stirring head, carrying out in-situ solidification on deep sludge 2 of the sludge pond by using a high-pressure rotary spraying process, carrying out in-situ solidification on sludge between cylindrical solidification bodies 4 by using a high-pressure swing spraying process, and adding a special sludge solidification agent to finish in-situ multidimensional solidification construction of the whole sludge pond so that the sludge reaches the designed strength after being solidified.
In the above embodiment, preferably, the in-situ multidimensional solidification construction method for the large-depth sludge pond further includes: dividing a unit grid of the sludge pond in advance; mechanically stirring the shallow sludge 1 in situ for solidification according to unit grids one by one; after the shallow sludge 1 in the whole sludge pond is treated, the deep sludge 2 in a single cell is subjected to in-situ solidification by adopting a high-pressure rotary spraying process and a high-pressure swing spraying process in sequence, and then the high-pressure rotary spraying process and the high-pressure swing spraying process are carried out on the cells one by one in sequence until the deep sludge 2 in the whole sludge pond is treated.
Specifically, the sludge pond is treated according to the unit lattices, after shallow sludge 1 is completely treated one by one according to the unit lattices, deep sludge 2 in the unit lattices is subjected to in-situ solidification on the top of a hard shell solidification body by adopting a high-pressure rotary spraying process, so that the deep sludge 2 forms a cylindrical solidification body 4, then, the deep sludge 2 between the unit lattices and other unit lattices is subjected to in-situ solidification by utilizing a high-pressure swing spraying process to form a fan-shaped solidification body 5, and then, the high-pressure rotary spraying process and the high-pressure swing spraying process are carried out one by one until the in-situ multidimensional solidification construction treatment of the whole large-depth sludge pond is completed.
In the above embodiment, preferably, the stirring manner of the high-pressure rotary spraying process and the high-pressure swing spraying process adopts a double-pipe method, the spraying medium is solidified agent slurry and compressed air, the spraying pressure of the slurry is 25 to 40MPa, the flow rate of the slurry is 70 to 100L/min, the spraying pressure of the air is 0.6 to 0.8MPa, and the flow rate of the air is 0.8 to 1.2m3/min。
As shown in fig. 3, in the above embodiment, it is preferable that the spraying points of the high-pressure rotary spraying process and the high-pressure swing spraying process are distributed in a quincunx shape, the diameter of the spraying point forming fan-shaped solidified body 5 of the high-pressure swing spraying process is 2 times of the diameter of the spraying point forming cylindrical solidified body 4 of the high-pressure rotary spraying process, the distance between the spraying points is specifically, the diameter of the cylindrical solidified body 4 is 1.2 to 2.0m, and the radius of the fan-shaped solidified body 5 is 1.8 to 3.0 m. Preferably, the cylindrical solidified bodies 4 and the fan-shaped solidified bodies 5 are intersected with each other in a horizontal direction.
In the above embodiment, preferably, the lifting speed of the high-pressure rotary spraying process is 10-25 cm/min, the rotating speed is 8-25 r/min, the lifting speed of the high-pressure swing spraying process is 8-15 cm/min, the swing speed is 6-15 times/min, and the swing angle range is 30-90 °.
In the above embodiment, preferably, the curing agent slurry is prepared by compounding a silicate structuring agent, a carbonate structuring agent, an inorganic salt coagulant, a crystalline mineral mineralizing agent, a clay mineral mineralizing agent and a high molecular polymer coupling agent according to a certain proportion.
In the above embodiment, preferably, in the conventional mechanical stirring manner, the length of the extended arm of the mechanical stirring head is 7 meters, the depth of in-situ solidification of the shallow sludge 1 is 0-8 meters, the mechanical stirring head is adapted to 25-35 tons of excavators, the depth of in-situ solidification of the deep sludge 2 is 7-25 meters, and the depth of the overlapping area 3 of the shallow sludge 1 and the deep sludge 2 in the vertical height is at least 1 meter.
In the above embodiment, it is preferable that the shallow sludge 1 is pushed from the periphery to the center of the sludge pond during the in-situ solidification on a cell-by-cell basis.
In the above embodiment, the mechanical stirring head is preferably two rollers with stirring mixing knife plates driven by hydraulic motors, the diameter is 75cm, the maximum output power is 160kw, and the rotating speed range is within 100 r/min.
According to the in-situ multi-dimensional curing construction method for the large-depth sludge pond, which is provided by the embodiment, in the specific implementation process, the method comprises the following steps:
(1) according to the condition of a sludge pond, the sludge pond is solidified in a subarea mode, cells are divided according to the size of 20m multiplied by 20m, and each cell is numbered and recorded, so that the operation of a construction machine is facilitated;
(2) carrying out in-situ solidification construction on a first cell in a shallow sludge 1 area by adopting a traditional mechanical stirring head matched with an excavator, wherein the construction sequence is that the sludge is propelled from the periphery of a pond to the center;
(3) after the in-situ solidification of the first cell in the shallow sludge 1 area is finished, moving a traditional mechanical stirring head adaptive to an excavator to the second cell to perform in-situ solidification construction of the shallow sludge 1;
(4) then, carrying out in-situ solidification construction on a deep sludge 2 area at the bottom of one cell of the shallow sludge 1 area, wherein the diameter of a cylindrical solidified body 4 formed by a high-pressure rotary spraying process is 1.6m, the radius of a fan-shaped solidified body 5 formed by a high-pressure swing spraying process is 2.4m, spraying points are arranged in a quincunx shape, and the distance between the spraying points is 3.2 m;
wherein the high-pressure rotary spraying stirring process is a double-pipe method, the spraying medium is solidified agent slurry and compressed air, the slurry pressure is 30MPa, the flow rate is 70L/min, the air pressure is 0.6MPa, and the flow rate is 0.8m3Min, the lifting speed is 12cm/min, and the rotating speed is 12 r/min;
wherein the high-pressure swing-spraying stirring process is a double-pipe method, the spraying medium is solidified agent slurry and compressed air, the slurry pressure is 35MPa, the flow rate is 100L/min, the air pressure is 0.8MPa, and the flow rate is 1.0m3Min, the swinging, spraying, stirring and lifting speed is 10cm/min, the swinging speed is 10 times/min, and the swinging angle is 60 degrees;
wherein the sludge solidification agent is compounded by a silicate structuring agent, a carbonate structuring agent, an inorganic salt coagulant, a crystal mineral mineralizer, a clay mineral mineralizer and a high polymer coupling agent according to a certain proportion;
wherein, the deep sludge 2 area at the bottom of the first cell of the shallow sludge 1 area is stirred and solidified from the depth of 7m to the depth of 25m at the bottom of the sludge pond, and is overlapped with the shallow sludge 1 solidification area for 1m in the vertical space;
the bottom high-pressure rotary spraying solidification area of the deep sludge 2 area at the bottom of the first cell of the shallow sludge 1 area is basically overlapped with the high-pressure swing spraying solidification area, so that the bottom sludge can be completely subjected to in-situ solidification construction;
(5) and (4) repeating the steps (2) to (4), and gradually completing the in-situ multidimensional curing construction of the rest cells until the in-situ curing treatment work of the whole sludge pond is completed.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An in-situ multidimensional curing construction method for a large-depth sludge pond is characterized by comprising the following steps:
carrying out in-situ solidification on shallow sludge in a sludge pond by adopting a mechanical stirring head to form a hard shell solidified body;
carrying out in-situ solidification on the deep sludge in the sludge pond by adopting a high-pressure jet grouting process to form a cylindrical solidified body;
and carrying out in-situ solidification on deep sludge between the cylindrical solidified bodies by adopting a high-pressure swing spraying process to form a fan-shaped solidified body.
2. The in-situ multi-dimensional curing construction method for the large-depth sludge pond according to claim 1, further comprising:
carrying out cell division on the sludge pond in advance;
mechanically stirring the shallow sludge according to unit grids one by one and carrying out in-situ solidification;
after the shallow sludge treatment of the whole sludge pond is completed, the deep sludge of a single cell is subjected to in-situ solidification by adopting a high-pressure rotary spraying process and a high-pressure swing spraying process in sequence, and then the high-pressure rotary spraying process and the high-pressure swing spraying process are sequentially carried out on the cells one by one until the deep sludge treatment of the whole sludge pond is completed.
3. The in-situ multidimensional solidification construction method for the large-depth sludge pond according to claim 1 or 2, wherein the high-pressure rotary spraying process and the high-pressure swing spraying process adopt a double-pipe method in a stirring manner, spraying media comprise solidification agent slurry and compressed air, the spraying pressure of the slurry is 25-40 MPa, the flow rate of the slurry is 70-100L/min, the spraying pressure of the air is 0.6-0.8 MPa, and the flow rate of the air is 0.8-1.2 m3/min。
4. The in-situ multidimensional solidification construction method for the large-depth sludge pond according to claim 3, wherein the injection points of the high-pressure rotary injection process and the high-pressure swing injection process are distributed in a quincunx shape, the diameter of the cylindrical solidified body formed by the injection points of the high-pressure rotary injection process is 1.2-2.0 m, and the radius of the fan-shaped solidified body formed by the injection points of the high-pressure swing injection process is 1.8-3.0 m.
5. The in-situ multi-dimensional solidification construction method for the large-depth sludge lagoon according to claim 4, wherein the cylindrical solidified body and the fan-shaped solidified body are horizontally intersected with each other.
6. The in-situ multidimensional solidification construction method for the large-depth sludge pond according to claim 4, wherein the lifting speed of the high-pressure rotary spraying process is 10-25 cm/min, the rotating speed is 8-25 r/min, the lifting speed of the high-pressure swing spraying process is 8-15 cm/min, the swing speed is 6-15 times/min, and the swing angle range is 30-90 degrees.
7. The in-situ multidimensional solidification construction method for the large-depth sludge pond according to claim 3, wherein the solidification agent slurry is prepared by compounding a silicate structuring agent, a carbonate structuring agent, an inorganic salt coagulant, a crystal mineral mineralizer, a clay mineral mineralizer and a high polymer coupling agent.
8. The construction method for in-situ multidimensional solidification in the large-depth sludge pond according to claim 3, wherein the depth of in-situ solidification of the shallow sludge is 0 to 8 meters, the depth of in-situ solidification of the deep sludge is 7 to 25 meters, and the depth of an overlapping region of the shallow sludge and the deep sludge in the vertical height is at least 1 meter.
9. The in-situ multi-dimensional solidification construction method for the large-depth sludge pond according to claim 2, wherein the shallow sludge is propelled from the periphery to the center of the sludge pond in the in-situ solidification process of the shallow sludge in units of grids.
10. The in-situ multidimensional solidification construction method for the large-depth sludge pond according to claim 1, wherein the mechanical stirring head is two rollers with stirring and mixing knife boards driven by a hydraulic motor, the diameter is 75cm, the maximum output power is 160kw, and the rotating speed range is within 100 r/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116813165A (en) * | 2023-08-31 | 2023-09-29 | 北京高能时代环境技术股份有限公司 | In-situ treatment method of sludge pond |
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| CN116813165A (en) * | 2023-08-31 | 2023-09-29 | 北京高能时代环境技术股份有限公司 | In-situ treatment method of sludge pond |
| CN116813165B (en) * | 2023-08-31 | 2023-11-28 | 北京高能时代环境技术股份有限公司 | In-situ treatment method of sludge pond |
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