CN112495558A - Slotted soil recovery method - Google Patents
Slotted soil recovery method Download PDFInfo
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- CN112495558A CN112495558A CN202011281099.9A CN202011281099A CN112495558A CN 112495558 A CN112495558 A CN 112495558A CN 202011281099 A CN202011281099 A CN 202011281099A CN 112495558 A CN112495558 A CN 112495558A
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- sand
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- preset value
- screening
- spare
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- 239000002689 soil Substances 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000011084 recovery Methods 0.000 title abstract description 4
- 239000004576 sand Substances 0.000 claims abstract description 185
- 238000012216 screening Methods 0.000 claims abstract description 49
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 35
- 239000002994 raw material Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 17
- 208000005156 Dehydration Diseases 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 6
- 238000011282 treatment Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 238000010333 wet classification Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 18
- 239000010802 sludge Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/06—Codes relating to disintegrating devices adapted for specific materials for garbage, waste or sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/58—Construction or demolition [C&D] waste
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The embodiment of the invention provides a slotted soil recycling method, and relates to the technical field of construction waste recycling. The slotted soil recovery method is used for separating slotted soil into coarse sand, fine sand and reclaimed soil, and comprises the steps of screening the slotted soil to form coarse sand and a mixture; separating the mixture to form fine sand and reclaimed soil; the size of the coarse sand is larger than or equal to a first preset value, and the size of the fine sand is smaller than the first preset value. The method for recycling the slotted soil provided by the embodiment of the invention can recycle the slotted soil, and the slotted soil is recycled into coarse sand, fine sand and reclaimed soil, so that the utilization rate of the slotted soil is improved.
Description
Technical Field
The invention relates to the technical field of construction waste recycling, in particular to a method for recycling slotted soil.
Background
A large amount of slotted soil is formed in engineering construction in China, and the existing disposal mode is generally piled as abandoned soil, so that land resources are occupied, and the resource recycling waste is caused, so that the slotted soil recycling rate is poor.
Disclosure of Invention
The invention aims to provide a method for recovering slotted soil, which can be used for recovering slotted soil and improving the utilization rate of the slotted soil.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a method for recovering slotted soil, which is used for separating the slotted soil into coarse sand, fine sand and regenerated soil, and comprises the following steps:
screening the slotted soil to form coarse sand and a mixture;
separating the mixture to form the fine sand and the reclaimed soil; the size of the coarse sand is larger than or equal to a first preset value, and the size of the fine sand is smaller than the first preset value.
In an alternative embodiment of the present invention, the step of screening the open trench soil to form the grit and mixture comprises:
screening out impurities with the size larger than or equal to a second preset value in the slotted soil to form first standby sand, wherein the second preset value is larger than the first preset value, and the size of the coarse sand is larger than or equal to the first preset value and smaller than the second preset value;
crushing the first spare sand to form second spare sand;
and screening the second standby sand by using screening equipment with screen holes of a first preset value, wherein the oversize material is the coarse sand, and the undersize material is the mixture.
In an alternative embodiment of the invention, the step of breaking up the first spare sand to form a second spare sand comprises:
screening the first standby sand by using screening equipment with a screen hole of a third preset value; wherein the material on the screen is third spare sand, and the material on the screen is fourth spare sand; the third preset value is greater than the first preset value;
crushing the fourth spare sand by using secondary crushing equipment to form second spare sand; wherein, the crushing granularity of the first-level crushing equipment is larger than that of the second-level crushing equipment.
In an alternative embodiment of the present invention, the step of breaking the first spare sand to form second spare sand further comprises:
crushing the third spare sand by using first-stage crushing equipment to form fifth spare sand;
screening the fifth standby sand by using screening equipment with a screen hole of a third preset value; wherein the oversize material is the third spare sand, and the undersize material is the fourth spare sand.
In an optional embodiment of the present invention, the step of screening the second spare sand by using a screening apparatus having a screen aperture with a first preset value includes:
and screening the second spare sand by adopting a wet classification mode.
In an alternative embodiment of the present invention, the step of separating the mixture to form the fine sand and the reclaimed soil comprises:
spraying the mixture to form a silt slurry;
filtering the silt slurry by adopting a filtering device with a sieve pore of a fourth preset value; wherein the oversize material is fine sand raw material, and the undersize material is intermediate muddy water;
and dehydrating the fine sand raw material to form the fine sand.
In an alternative embodiment of the present invention, the step of dehydrating the fine sand raw material to form the fine sand includes:
dehydrating the fine sand raw material by using dehydration equipment;
and solarizing the fine sand raw material treated by the dewatering equipment to obtain the fine sand.
In an optional embodiment of the present invention, the method for reclaiming trench soil further comprises:
filtering the intermediate muddy water by adopting a filtering device with a fifth preset sieve pore, wherein the material on the sieve is the fine sand raw material, and the material on the sieve is tail muddy water;
and recovering the regenerated soil in the tail muddy water.
In an alternative embodiment of the present invention, the step of recovering the reclaimed soil in the tail water comprises:
filtering the tail mud water under high pressure to form slurry and overflow water;
and dehydrating the slurry to form the reclaimed soil.
In an alternative embodiment of the present invention, the step of dewatering the slurry to form the regen soil comprises:
and carrying out multiple times of dehydration treatment on the slurry.
The embodiment of the invention has the following beneficial effects: the slotted soil recovery method is used for separating slotted soil into coarse sand, fine sand and reclaimed soil, and comprises the steps of screening the slotted soil to form coarse sand and a mixture; separating the mixture to form fine sand and reclaimed soil; the size of the coarse sand is larger than or equal to a first preset value, and the size of the fine sand is smaller than the first preset value. The method for recycling the slotted soil provided by the embodiment of the invention can recycle the slotted soil, and the slotted soil is recycled into coarse sand, fine sand and reclaimed soil, so that the utilization rate of the slotted soil is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flow chart of a method for reclaiming soil from a trench according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating the sub-steps of step S100 of the method for reclaiming soil from open slots according to an embodiment of the present invention.
Fig. 3 is a flowchart illustrating the substeps of step S120 of the method for reclaiming soil from open slots according to an embodiment of the present invention.
Fig. 4 is a flowchart of substeps of step S200 of the method for reclaiming soil from open slots according to an embodiment of the present invention.
Fig. 5 is a flowchart illustrating the sub-steps of step S230 of the method for reclaiming soil from open slots according to an embodiment of the present invention.
Fig. 6 is a flowchart illustrating the sub-steps of step S250 of the method for reclaiming soil from open slots according to an embodiment of the present invention.
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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Examples
Referring to fig. 1, the embodiment provides a method for recovering slotted soil, and the method for recovering slotted soil provided by the embodiment can be used for recovering slotted soil and improving the utilization rate of the slotted soil.
The slotted soil is solid waste with high recycling value in construction waste, and because the slotted construction is generally carried out in a surface soil layer or a shallow foundation rock layer, the slotted soil mainly comprises one or more of humus soil, miscellaneous fill soil, sub-sandy soil and sand and stones, and the composition of the slotted soil is slightly different according to the soil property characteristics of a construction area. The particle size range of the sand is different from 0 to 200mm according to different construction processes, the particle fraction below 50mm accounts for more than 80 percent, and the slotted soil is separated into coarse sand, fine sand and reclaimed soil after being treated and recovered.
The specific steps of the method for recovering the slotted soil are as follows:
and S100, screening the slotted soil to form coarse sand and a mixture.
In this embodiment, the slotted soil is primarily screened to screen coarse sand with a larger particle size, and the mixture is further processed to separate fine sand and reclaimed soil.
Referring to fig. 2, step S100 includes step S110, step S120 and step S130.
And step S110, screening out impurities with the size larger than or equal to a second preset value in the slotted soil to form first spare sand. And the second preset value is larger than the first preset value, and the size of the coarse sand is larger than or equal to the first preset value and smaller than the second preset value.
In this embodiment, the second preset value is 200mm, and the step can be performed manually because the particle size of the sundries is large and easy to identify. Mainly screens out impurities and sundries in the slotted soil.
And step S120, crushing the first spare sand to form second spare sand.
In this embodiment, a crushing device is used to crush the first spare sand, and the first spare sand with a larger particle size is crushed into the second spare sand with a smaller particle size, so as to improve the yield of coarse sand and fine sand.
Referring to fig. 3, step S120 includes step S121, step S123, step S125 and step S127.
And S121, screening the first standby sand by adopting screening equipment with a screen hole of a third preset value. Wherein the material on the screen is third spare sand, and the material on the screen is fourth spare sand; the third preset value is greater than the first preset value;
in this embodiment, the first spare sand is first screened to obtain a third spare sand with a large particle size and a fourth spare sand with a small particle size, and the third spare sand and the fourth spare sand with different particle sizes are respectively processed. And crushing the third spare sand and the fourth spare sand by adopting crushing equipment with different grades to ensure that the finally formed second spare sand can be in a qualified particle size range.
And the third preset value is more than 40mm and less than 200mm, the process of screening the first spare sand can be regarded as primary screening, the screening equipment of the primary screening is classified according to the third preset value, and the third spare sand larger than the third preset value enters the primary crushing equipment to be crushed below the third preset value.
And S123, crushing the third spare sand by using first-stage crushing equipment to form fifth spare sand.
In this embodiment, the third spare sand of the oversize material is larger than the fourth spare sand in particle size, and the first-stage crushing equipment is adopted to crush the third spare sand so that the fifth spare sand obtained finally can reach a smaller particle size.
In this embodiment, the size of the fifth spare sand crushed by the primary crushing apparatus is approximately between 40mm and 200 mm.
And step S125, screening the fifth standby sand by using screening equipment with a screen hole of a third preset value. Wherein, the oversize material is the third spare sand, and the undersize material is the fourth spare sand.
In this embodiment, after the primary crushing is completed, the screening equipment is used to screen the fifth spare sand, and the screened third spare sand is used to crush the first crushing equipment. The process of screening the fifth backup sand may be considered a secondary screening. And after the third spare sand is subjected to secondary screening, the granularity is further reduced, so that subsequent screening between coarse sand and fine sand is facilitated.
And S127, crushing the fourth spare sand by using secondary crushing equipment to form second spare sand. Wherein, the crushing granularity of the first-level crushing equipment is larger than that of the second-level crushing equipment.
In this embodiment, since the fourth spare sand has a relatively small particle size, the crushed particle size of the secondary crushing apparatus is relatively small and the final crushed second spare sand has a particle size of approximately 8mm to 40 mm.
In this embodiment, make the granularity control of the reserve sand of second between 8mm to 40mm after one-level crushing equipment and the broken back of second grade crushing equipment many times for the granularity of the reserve sand of second diminishes, is convenient for subsequent screening of coarse sand and fine sand.
Referring to fig. 2, in step S130, the second spare sand is screened by using a screening apparatus having a first preset screening hole. Wherein, the oversize material is coarse sand, and the undersize material is a mixture.
In this example, the second spare sand was screened by wet classification. The screening process can be considered as three-stage screening, in which the size of the coarse sand is greater than or equal to a first preset value and the size of the fine sand is less than the first preset value.
In this embodiment, the first predetermined value is approximately between 5mm and 10mm, and after the screening is completed, the oversize material is coarse sand, and the undersize material is a mixture, wherein the coarse sand has a particle size approximately between 5mm and 40 mm. The particle size of the mixture entering the next stage of treatment equipment is generally between 0mm and 10 mm.
In this embodiment, coarse sand is sieved after two-stage crushing and three-stage sieving, and the sieved coarse sand enters transportation equipment and is transported to a storage yard for storage.
Referring to fig. 1, in step S200, the mixture is separated to form fine sand and reclaimed soil.
In this embodiment, the mixture is mainly formed by fine sand and reclaimed soil, and the fine sand and the reclaimed soil in the mixture need to be separated and recovered.
Referring to fig. 4, step S200 includes step S210, step S220, step S230 and step S240.
Step S210, spraying the mixture to form a silt slurry.
In this example, the fine sand is solid and insoluble in water, and the fine sand in the mixture is recovered after spraying the mixture.
And S220, filtering the silt slurry by adopting a filtering device with a fourth preset sieve pore. Wherein the oversize material is fine sand raw material, and the undersize material is intermediate muddy water.
In this embodiment, the fine sand in the silt slurry is solid, the oversize material is the fine sand raw material after being filtered by the filter equipment, and the undersize material is the intermediate muddy water. Wherein the fourth preset value is between 0.75mm and 10 mm. The fine sand raw material obtained by filtering has the granularity of 0.75mm to 10 mm.
And step S230, dehydrating the fine sand raw material to form fine sand.
In this embodiment, can adhere to a large amount of moisture on the fine sand raw materials that filters out from the silt thick liquid, need get rid of the moisture on the fine sand raw materials, make things convenient for the transportation and the storage of later stage fine sand.
Referring to fig. 5, step S230 includes step S232 and step S234.
And step S232, dehydrating the fine sand raw material by adopting dehydration equipment.
In this embodiment, the dewatering equipment is used to remove most of the water attached to the fine sand material, and the fine sand material is transferred to a fine sand product storage yard for storage.
And S234, solarizing the fine sand raw material treated by the dewatering equipment to obtain fine sand.
In this embodiment, the sand may be put into market after being transported to a fine sand product yard and then naturally exposed to the sun after being processed in step S232.
Referring to fig. 4, in step S240, the intermediate muddy water is filtered by using a filtering apparatus having a fifth preset sieve aperture. Wherein the oversize material is fine sand raw material, and the undersize material is tail mud water.
In this embodiment, there is a small amount of fine sand raw materials to sneak into middle muddy water at the in-process of filtering silt thick liquid, and the filtration equipment that adopts the sieve mesh to be the fifth default is once filtering, can avoid as far as tail muddy water adulterate a small amount of fine sand raw materials, filters many times and has improved the yield of fine sand.
And the fifth preset value is smaller than the fourth preset value.
And step S250, recycling the reclaimed soil in the tail muddy water.
In this embodiment, the tailing water mainly comprises water and recycled soil, and the recycled soil in the tailing water can be backfilled or used for other purposes.
Referring to fig. 6, step S250 includes step S252 and step S254.
Step S252, filtering the tail mud water under high pressure to form slurry and overflow water.
In the embodiment, overflow water in the water tank can be quickly filtered by adopting a high-pressure mode.
In step S254, the slurry is dehydrated to form reclaimed soil.
The mud is dehydrated for a plurality of times, so that the dehydration effect can be improved, and the regenerated soil has no water as much as possible. The final reclaimed soil has a particle size of approximately between 0mm and 0.75 mm.
In this embodiment, the tail sludge water overflows into a tail sludge water treatment system to be dehydrated to obtain recycled soil, the system is composed of a tail sludge storage tank, a clarifying tank, a filter pressing feed tank, tail sludge feeding equipment, filter pressing feed equipment, filter pressing dehydration equipment and dosing equipment, filtrate is recycled as underflow washing water of the clarifying tank, and overflow of the clarifying tank is recycled as wet screening spraying water. The whole system realizes water closed-circuit circulation without discharging sewage.
The working principle of the method for recovering the slotted soil provided by the embodiment is as follows: in this embodiment, the impurities in the trench soil are screened, the first spare sand is subjected to a plurality of crushing and screening treatments, coarse sand and a mixture are screened, and the mixture is subjected to treatments such as spraying, filtering and dewatering to obtain fine sand and reclaimed soil.
In conclusion, the method for recycling the slotted soil provided by the embodiment can recycle the slotted soil, and recycle the slotted soil into coarse sand, fine sand and reclaimed soil, so that the utilization rate of the slotted soil is improved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A method for reclaiming notch soil, which is used for separating notch soil into coarse sand, fine sand and reclaimed soil, and is characterized by comprising the following steps:
screening the slotted soil to form coarse sand and a mixture;
separating the mixture to form the fine sand and the reclaimed soil; the size of the coarse sand is larger than or equal to a first preset value, and the size of the fine sand is smaller than the first preset value.
2. The method of claim 1, wherein the step of screening the open trench soil to form the grit and mixture comprises:
screening out impurities with the size larger than or equal to a second preset value in the slotted soil to form first standby sand, wherein the second preset value is larger than the first preset value, and the size of the coarse sand is larger than or equal to the first preset value and smaller than the second preset value;
crushing the first spare sand to form second spare sand;
and screening the second standby sand by using screening equipment with screen holes of a first preset value, wherein the oversize material is the coarse sand, and the undersize material is the mixture.
3. The method of claim 2, wherein the step of breaking the first backup sand to form a second backup sand comprises:
screening the first standby sand by using screening equipment with a screen hole of a third preset value; wherein the material on the screen is third spare sand, and the material on the screen is fourth spare sand; the third preset value is greater than the first preset value;
crushing the fourth spare sand by using secondary crushing equipment to form second spare sand; wherein, the crushing granularity of the first-level crushing equipment is larger than that of the second-level crushing equipment.
4. The method for trenching soil reclamation of claim 3, wherein the step of breaking up the first backup sand to form a second backup sand further comprises:
crushing the third spare sand by using first-stage crushing equipment to form fifth spare sand;
screening the fifth standby sand by using screening equipment with a screen hole of a third preset value; wherein the oversize material is the third spare sand, and the undersize material is the fourth spare sand.
5. The method of claim 3, wherein the step of screening the second sand supply with a screening device having a screen opening with a first predetermined value comprises:
and screening the second spare sand by adopting a wet classification mode.
6. The method of claim 1, wherein said step of separating said mixture to form said fine sand and said reclaimed soil comprises:
spraying the mixture to form a silt slurry;
filtering the silt slurry by adopting a filtering device with a sieve pore of a fourth preset value; wherein the oversize material is fine sand raw material, and the undersize material is intermediate muddy water;
and dehydrating the fine sand raw material to form the fine sand.
7. The method of claim 6, wherein the step of dewatering the fine sand feedstock to form the fine sand comprises:
dehydrating the fine sand raw material by using dehydration equipment;
and solarizing the fine sand raw material treated by the dewatering equipment to obtain the fine sand.
8. The method of claim 6, further comprising:
filtering the intermediate muddy water by adopting a filtering device with a fifth preset sieve pore, wherein the material on the sieve is the fine sand raw material, and the material on the sieve is tail muddy water;
and recovering the regenerated soil in the tail muddy water.
9. The method of claim 8, wherein the step of recovering the reclaimed soil from the tail mud comprises:
filtering the tail mud water under high pressure to form slurry and overflow water;
and dehydrating the slurry to form the reclaimed soil.
10. The method of claim 9, wherein said step of dewatering said slurry to form said reclaimed soil comprises:
and carrying out multiple times of dehydration treatment on the slurry.
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| CN202011281099.9A CN112495558A (en) | 2020-11-16 | 2020-11-16 | Slotted soil recovery method |
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| CN202011281099.9A CN112495558A (en) | 2020-11-16 | 2020-11-16 | Slotted soil recovery method |
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