CN107473640A - A kind of remaining body refuse soil processing and method of comprehensive utilization - Google Patents
A kind of remaining body refuse soil processing and method of comprehensive utilization Download PDFInfo
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- CN107473640A CN107473640A CN201710702820.9A CN201710702820A CN107473640A CN 107473640 A CN107473640 A CN 107473640A CN 201710702820 A CN201710702820 A CN 201710702820A CN 107473640 A CN107473640 A CN 107473640A
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- 239000002689 soil Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 76
- 238000012545 processing Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000004576 sand Substances 0.000 claims abstract description 45
- 230000008569 process Effects 0.000 claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 claims abstract description 40
- 239000000428 dust Substances 0.000 claims abstract description 38
- 239000004575 stone Substances 0.000 claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 21
- 239000010802 sludge Substances 0.000 claims description 46
- 239000002245 particle Substances 0.000 claims description 36
- 238000005469 granulation Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 29
- 239000011449 brick Substances 0.000 claims description 25
- 238000004062 sedimentation Methods 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
- 230000003179 granulation Effects 0.000 claims description 21
- 238000005507 spraying Methods 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 14
- 238000012216 screening Methods 0.000 claims description 13
- 238000005406 washing Methods 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 7
- 239000003337 fertilizer Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 5
- 208000035619 Back crushing Diseases 0.000 claims description 4
- 230000002308 calcification Effects 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000001035 drying Methods 0.000 abstract 2
- 239000012716 precipitator Substances 0.000 abstract 2
- 238000000151 deposition Methods 0.000 abstract 1
- 239000007921 spray Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 238000004064 recycling Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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- 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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of remaining body refuse soil processing and method of comprehensive utilization, including：Step 1）According to the water content of remaining body refuse soil is respectively fed to dry method, two process for producing lines of wet method are handled, wherein, the remaining body refuse soil that water content is less than 30% and sand content is less than 40%, handled through dry process production line；The remaining body refuse soil that water content is higher than 30% and sand content is higher than 40% is handled through wet-treating production line；Step 2）In dry process production line, following processing procedure is performed：The remaining body refuse soil that water content is less than 30% and sand content is less than 40% is uniformly inputted into crushing mixer through oscillating feeder, atomized water spray depositing dust in input process；Remaining body refuse soil is stirred and smashed by crushing mixer repeatedly, is installed dust-precipitator additional and is gathered dust；After fragmentary remaining body refuse soil sifts out stone and debris with belt feeder input heavy sieve, fragmentary pure soil is delivered to storage warehouse, dust-precipitator dedusting is used in work；After the broken processing of stone sifted out, used as aggregate.
Description
Technical Field
The invention belongs to a method for treating and comprehensively utilizing residual sludge and dregs.
Background
The treatment and comprehensive utilization of the residual sludge soil are that the stone, sand and sundries in the residual sludge soil are removed by a reasonable treatment process technology to form pure soil with the sand content of less than 30 percent, and then the pure soil is used as a raw material to process and produce various usable regenerated products.
The traditional method for treating the residual sludge and dregs adopts a wet treatment process (a so-called washed sand production process), and is a reasonable and effective treatment mode aiming at the treatment of the residual sludge and dregs with water content higher than 30 percent and sand content higher than 40 percent; however, the residual sludge and residue soil with the water content lower than 30% and the sand content lower than 40% is also treated by adopting a wet treatment process, so that the treatment process is complicated, the treatment cost is high, and the efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for treating and comprehensively utilizing residual sludge and dregs, which is used for solving the problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for treating and comprehensively utilizing residual sludge and dregs comprises the following steps:
step 1) respectively sending the residual sludge and dregs into a dry method treatment production line and a wet method treatment production line for treatment according to the water content of the residual sludge and dregs, wherein the residual sludge and dregs with the water content lower than 30% and the sand content lower than 40% are treated by the dry method treatment production line; treating the residual sludge and residue soil with water content higher than 30% and sand content higher than 40% by a wet treatment production line;
step 2) in the dry processing production line, the following processing procedures are executed:
uniformly inputting the residual sludge and muck with the water content of less than 30% and the sand content of less than 40% into a crushing and stirring machine through a vibrating feeder, and spraying water mist to reduce dust in the input process; repeatedly stirring and crushing the residual sludge and residue soil by a crushing and stirring machine, and additionally installing a dust collector for collecting dust; after the scattered and crushed residual soil and dregs are input into a heavy sieve by a belt conveyor to be screened out of stones and sundries, the scattered and crushed pure soil is conveyed to a storage warehouse and is dedusted by a dust collector during work; the sieved stones are crushed and used as aggregates.
Wherein, in the wet processing production line, the following processing procedures are executed:
washing the residual soil with water content higher than 30% and sand content higher than 40% under high pressure by a washing sieve to screen out stones and impurities, directly flowing the soil with low sand content into a mud sedimentation tank, washing the soil with high sand content out sand by a sand washer, and then flowing the soil into the mud sedimentation tank; the water in the mud sedimentation tank is recycled after three-stage sedimentation, and the mud in the mud sedimentation tank is pumped into a storage tank by a mud pump for storage; the slurry is circularly stirred and precipitated in the storage tank, and is conveyed to dewatering equipment by a screw conveyor to be dewatered; and (4) introducing the sewage after the slurry is dehydrated into a third-level sedimentation tank for purification and utilization, and conveying the dehydrated sludge blocks to a storage warehouse.
Wherein, the comprehensive utilization of the treated pure soil is as follows: processing the mixture into composite fertilizer soil, manufacturing a sintering-free brick and sintering the sintering-free brick into a porous brick.
Wherein, still include: re-granulation with pure soil comprising:
inputting the treated pure soil into an environment-friendly granulation device for re-granulation processing, adding a proper amount of fly ash, stone powder and water in a stirring process, spraying a quantitative high-molecular curing agent in the middle of stirring, uniformly mixing, then entering a granulation process, and continuously spraying cement powder to wrap particles in the granulation process according to the proportion;
the particles are heated and solidified properly, then are input into a mixing and stirring device, are added with sand, cement and water according to the proportion and are stirred, and are subjected to extrusion forming after being uniformly mixed; the particles solidified at the early stage can be used as a roadbed cushion material and improved soil;
after the extrusion forming process, the produced mortar-like road base material can be directly used and enters a maintenance area for calcification maintenance;
deep processing the cured material, and conveying the material to impact crushing equipment by a belt conveyor for crushing; a totally-enclosed sound insulation device is additionally arranged on the crushing equipment to reduce the working noise, and a dust collector is arranged to control dust pollution;
the recycled aggregate produced by crushing is screened by three-stage screening equipment to obtain three recycled aggregates with the particle sizes of 0-5mm, 5-10mm and 10-30mm, and the aggregate with the particle size of more than 30mm is input into impact crushing equipment to be subjected to back crushing treatment.
The screening equipment adopts totally-enclosed work, meanwhile, a noise reduction device is additionally arranged to reduce working noise, and pipeline negative pressure dust collection is additionally arranged by utilizing working negative pressure generated by the screening equipment; when the conveyer belt is used for unloading, a humidifier is used for dust fall of aggregates with the particle sizes of 0-5mm, and a spraying device is used for dust fall of aggregates with the particle sizes of 5-10mm and 10-30 mm.
Wherein, the treated pure soil is subjected to granulation processing and later-stage crushing production to form three kinds of recycled aggregates with the grain diameters of 0-5mm, 5-10mm and 10-30mm, and the aggregates with the grain diameters of 10-30mm are used for producing recycled concrete;
aggregate with the particle size of 5-10mm is used for producing the environment-friendly water permeable brick; aggregates with the grain diameter of 0-5mm and 5-10mm are used for producing various environment-friendly building blocks; the three aggregates with the grain diameters of 0-5mm, 5-10mm and 10-30mm can be simultaneously used as roadbed water stabilizing cushion materials.
The process adds a soil re-granulation technology, and solves the puzzles in the industries of residual soil treatment and comprehensive utilization. The treated soil is added with auxiliary materials such as a high-molecular curing agent, stone powder, cement powder and the like through granulation equipment, processed into a solidified granular material, repeatedly mixed and extruded into a high-density and high-strength material, and then crushed and processed into a recycled aggregate which can be used for producing recycled concrete, producing various environment-friendly building blocks and producing roadbed water stable cushion materials, so that the application range of the product is expanded, the comprehensive recycling utilization rate is improved, and the treatment capacity of residual sludge and soil is improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The present invention will be described in detail below with reference to the accompanying drawings so that the above advantages of the present invention will be more apparent. Wherein,
FIG. 1 is a schematic view of the method for treating and comprehensively utilizing the residual soil and dregs.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
As shown in figure 1, the method for treating and comprehensively utilizing the residual soil comprises the following steps:
step 1) respectively sending the residual sludge and dregs into a dry method treatment production line and a wet method treatment production line for treatment according to the water content of the residual sludge and dregs, wherein the residual sludge and dregs with the water content lower than 30% and the sand content lower than 40% are treated by the dry method treatment production line; treating the residual sludge and residue soil with water content higher than 30% and sand content higher than 40% by a wet treatment production line;
step 2) in the dry processing production line, the following processing procedures are executed:
uniformly inputting the residual sludge and muck with the water content of less than 30% and the sand content of less than 40% into a crushing and stirring machine through a vibrating feeder, and spraying water mist to reduce dust in the input process; repeatedly stirring and crushing the residual sludge and residue soil by a crushing and stirring machine, and additionally installing a dust collector for collecting dust; after the scattered and crushed residual soil and dregs are input into a heavy sieve by a belt conveyor to be screened out of stones and sundries, the scattered and crushed pure soil is conveyed to a storage warehouse and is dedusted by a dust collector during work; the sieved stones are crushed and used as aggregates.
Wherein, in the wet processing production line, the following processing procedures are executed:
washing the residual soil with water content higher than 30% and sand content higher than 40% under high pressure by a washing sieve to screen out stones and impurities, directly flowing the soil with low sand content into a mud sedimentation tank, washing the soil with high sand content out sand by a sand washer, and then flowing the soil into the mud sedimentation tank; the water in the mud sedimentation tank is recycled after three-stage sedimentation, and the mud in the mud sedimentation tank is pumped into a storage tank by a mud pump for storage; the slurry is circularly stirred and precipitated in the storage tank, and is conveyed to dewatering equipment by a screw conveyor to be dewatered; and (4) introducing the sewage after the slurry is dehydrated into a third-level sedimentation tank for purification and utilization, and conveying the dehydrated sludge blocks to a storage warehouse.
Wherein, the comprehensive utilization of the treated pure soil is as follows: processing the mixture into composite fertilizer soil, manufacturing a sintering-free brick and sintering the sintering-free brick into a porous brick.
Wherein, still include: re-granulation with pure soil comprising:
inputting the treated pure soil into an environment-friendly granulation device for re-granulation processing, adding a proper amount of fly ash, stone powder and water in a stirring process, spraying a quantitative high-molecular curing agent in the middle of stirring, uniformly mixing, then entering a granulation process, and continuously spraying cement powder to wrap particles in the granulation process according to the proportion;
the particles are heated and solidified properly, then are input into a mixing and stirring device, are added with sand, cement and water according to the proportion and are stirred, and are subjected to extrusion forming after being uniformly mixed; the particles solidified at the early stage can be used as a roadbed cushion material and improved soil;
after the extrusion forming process, the produced mortar-like road base material can be directly used and enters a maintenance area for calcification maintenance;
deep processing the cured material, and conveying the material to impact crushing equipment by a belt conveyor for crushing; a totally-enclosed sound insulation device is additionally arranged on the crushing equipment to reduce the working noise, and a dust collector is arranged to control dust pollution;
the recycled aggregate produced by crushing is screened by three-stage screening equipment to obtain three recycled aggregates with the particle sizes of 0-5mm, 5-10mm and 10-30mm, and the aggregate with the particle size of more than 30mm is input into impact crushing equipment to be subjected to back crushing treatment.
The screening equipment adopts totally-enclosed work, meanwhile, a noise reduction device is additionally arranged to reduce working noise, and pipeline negative pressure dust collection is additionally arranged by utilizing working negative pressure generated by the screening equipment; when the conveyer belt is used for unloading, a humidifier is used for dust fall of aggregates with the particle sizes of 0-5mm, and a spraying device is used for dust fall of aggregates with the particle sizes of 5-10mm and 10-30 mm.
Wherein, the treated pure soil is subjected to granulation processing and later-stage crushing production to form three kinds of recycled aggregates with the grain diameters of 0-5mm, 5-10mm and 10-30mm, and the aggregates with the grain diameters of 10-30mm are used for producing recycled concrete;
aggregate with the particle size of 5-10mm is used for producing the environment-friendly water permeable brick; aggregates with the grain diameter of 0-5mm and 5-10mm are used for producing various environment-friendly building blocks; the three aggregates with the grain diameters of 0-5mm, 5-10mm and 10-30mm can be simultaneously used as roadbed water stabilizing cushion materials.
The process adds a soil re-granulation technology, and solves the puzzles in the industries of residual soil treatment and comprehensive utilization. The treated soil is added with auxiliary materials such as a high-molecular curing agent, stone powder, cement powder and the like through granulation equipment, processed into a solidified granular material, repeatedly mixed and extruded into a high-density and high-strength material, and then crushed and processed into a recycled aggregate which can be used for producing recycled concrete, producing various environment-friendly building blocks and producing roadbed water stable cushion materials, so that the application range of the product is expanded, the comprehensive recycling utilization rate is improved, and the treatment capacity of residual sludge and soil is improved.
More specifically, the technological process for treating and comprehensively utilizing the residual sludge and the dregs is described as follows:
1. the treatment of the residual sludge and the residue soil is divided into a dry treatment production line and a wet treatment production line. The residual sludge and residue soil with the water content lower than 30 percent and the sand content lower than 40 percent is processed by a dry processing production line; treating the residual sludge and residue soil with water content higher than 30% and sand content higher than 40% by a wet treatment production line;
2. and (3) dry processing production line: uniformly inputting the residual sludge and muck with the water content of less than 30 percent and the sand content of less than 40 percent into a crushing and stirring machine through a vibrating feeder, and spraying water mist to reduce dust in the input process; repeatedly stirring and crushing the residual sludge and residue soil by a crushing and stirring machine, and additionally installing a dust collector for collecting dust; after the scattered and crushed residual soil and dregs are input into a heavy sieve by a belt conveyor to be screened out of stones and sundries, the scattered and crushed pure soil is conveyed to a storage warehouse and is dedusted by a dust collector during work; after being crushed and processed, the sieved stones are used as aggregate;
3. and (3) wet processing production line: washing the residual soil with water content higher than 30% and sand content higher than 40% under high pressure by using a washing sieve to screen out stones and impurities, directly flowing the soil with low sand content into a mud sedimentation tank, washing the soil with high sand content out of sand by using a sand washer, and then flowing the soil into the mud sedimentation tank; the water in the mud sedimentation tank is recycled after three-stage sedimentation, and the mud in the mud sedimentation tank is pumped into a storage tank by a mud pump for storage; the slurry is circularly stirred and precipitated in the storage tank, and is conveyed to dewatering equipment by a screw conveyor to be dewatered; introducing the sewage after the slurry dehydration into a three-stage sedimentation tank for purification and utilization, and conveying the dehydrated sludge blocks to a storage warehouse;
4. comprehensive utilization of the treated pure soil: processing the mixture into composite fertilizer soil, manufacturing a sintering-free brick and sintering the sintering-free brick into a porous brick;
5. the process adds a pure soil granulation process technology, so that the comprehensive utilization rate of the pure soil is improved;
6. inputting the treated pure soil into an environment-friendly granulation device (with dust collection and noise reduction facilities) for granulation reconstruction processing, adding a proper amount of fly ash, stone powder and water in a stirring process, sprinkling a quantitative high-molecular curing agent in the middle of stirring, uniformly mixing, then entering a granulation process, and continuously spraying cement powder according to a ratio in the granulation process to wrap particles;
7. the particles are heated and solidified properly, then are input into a mixing and stirring device, are added with sand, cement and water according to the proportion and are stirred, and are subjected to extrusion forming after being uniformly mixed; the particles solidified at the early stage can be used as a roadbed cushion material and improved soil;
8. after the extrusion forming process, producing mortar-shaped road base material (which can be directly used), and entering a maintenance area for calcification maintenance;
9. deep processing the cured material, and conveying the material to impact crushing equipment by a belt conveyor for crushing; a totally-enclosed sound insulation device is additionally arranged on the crushing equipment to reduce the working noise, and a dust collector is arranged to control dust pollution;
10. screening the recycled aggregate produced by crushing by using three-stage screening equipment to obtain three recycled aggregates with the particle sizes of 0-5mm, 5-10mm and 10-30mm, and inputting the aggregates with the particle size of more than 30mm into impact crushing equipment for carrying out back crushing treatment; when the screening equipment works in a fully closed mode, a noise reduction device is additionally arranged to reduce working noise, and pipeline negative pressure dust collection is additionally arranged by utilizing working negative pressure generated by the screening equipment; when the conveyer belt is used for unloading, a humidifier (aiming at aggregate with the particle size of 0-5 mm) and a spraying device (aiming at aggregate with the particle size of 5-10mm and 10-30 mm) are used for reducing dust;
11. granulating the treated pure soil, and performing later-stage crushing production to form three kinds of recycled aggregates with the particle sizes of 0-5mm, 5-10mm and 10-30mm, wherein the aggregates with the particle size of 10-30mm are used for producing recycled concrete; aggregate with the particle size of 5-10mm is used for producing the environment-friendly water permeable brick; aggregates with the grain diameter of 0-5mm and 5-10mm are used for producing various environment-friendly building blocks (hydraulic bricks, soil-retaining bricks, grass planting bricks and the like); the three aggregates with the grain diameters of 0-5mm, 5-10mm and 10-30mm can be simultaneously used as roadbed water stabilizing cushion materials.
The process has the following technical advantages:
firstly, a dry processing technology is added, the processing flow is perfected, the processing cost is reduced, and the comprehensive processing capacity is improved.
The new dry processing method includes crushing the residual soil with crushing stirrer, sieving with heavy soil sieving machine to obtain pure soil with sand content lower than 30%.
The treatment process is reasonably adjusted, the treatment flow is perfected, a dry treatment process is added on the basis of the original wet treatment process, and the residual sludge and residue soil is treated by combining the dry and wet treatment processes, so that the treatment cost is reduced, and the integral comprehensive treatment capacity is improved.
And secondly, by adopting the technical scheme of the earth re-granulation process, the problem of environmental protection in the production of the recycled product is solved, the field of the recycled product is expanded, and the comprehensive utilization rate is improved.
The processed soil is mainly used for backfilling, manufacturing compound fertilizer, producing non-sintered bricks and sintering porous bricks in the aspect of comprehensive utilization. The backfilling and the preparation of the compound fertilizer are influenced by small market demand, and the use amount is low; the production of the non-sintered brick is influenced by the product quality (the brick is easy to weather and hydrate after being used for 3 to 5 years) and the product sales volume is not large; although the sintered porous bricks have stable product quality and large market demand, the production of the sintered porous bricks is forbidden in most domestic areas due to the limitation of environmental protection, thereby causing slow development of the industry.
The process adds a soil re-granulation technology, and solves the puzzles in the industries of residual soil treatment and comprehensive utilization. The treated soil is added with auxiliary materials such as a high-molecular curing agent, stone powder, cement powder and the like through granulation equipment, processed into a solidified granular material, repeatedly mixed and extruded into a high-density and high-strength material, and then crushed and processed into a recycled aggregate which can be used for producing recycled concrete, producing various environment-friendly building blocks and producing roadbed water stable cushion materials, so that the application range of the product is expanded, the comprehensive recycling utilization rate is improved, and the treatment capacity of residual sludge and soil is improved.
The process technology for treating and comprehensively utilizing the residual sludge and the dregs adds a dry treatment process technology in the aspect of a treatment process, adds an environment-friendly granulation process technology in the aspect of a comprehensive utilization technology, perfects the feasibility of implementing the residual sludge and the dregs treatment and comprehensive utilization projects, realizes the idea of energy conservation and environmental protection, and improves the comprehensive treatment capacity and the recycling capacity.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. 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 (6)
1. A method for treating and comprehensively utilizing residual sludge and dregs is characterized by comprising the following steps:
step 1) respectively sending the residual sludge and dregs into a dry method treatment production line and a wet method treatment production line for treatment according to the water content of the residual sludge and dregs, wherein the residual sludge and dregs with the water content lower than 30% and the sand content lower than 40% are treated by the dry method treatment production line; treating the residual sludge and residue soil with water content higher than 30% and sand content higher than 40% by a wet treatment production line;
step 2) in the dry processing production line, the following processing procedures are executed:
uniformly inputting the residual sludge and muck with the water content of less than 30% and the sand content of less than 40% into a crushing and stirring machine through a vibrating feeder, and spraying water mist to reduce dust in the input process; repeatedly stirring and crushing the residual sludge and residue soil by a crushing and stirring machine, and additionally installing a dust collector for collecting dust; after the scattered and crushed residual soil and dregs are input into a heavy sieve by a belt conveyor to be screened out of stones and sundries, the scattered and crushed pure soil is conveyed to a storage warehouse and is dedusted by a dust collector during work; the sieved stones are crushed and used as aggregates.
2. The method for treating and comprehensively utilizing the residual dregs according to claim 1, wherein the following treatment processes are performed in a wet treatment production line:
washing the residual soil with water content higher than 30% and sand content higher than 40% under high pressure by a washing sieve to screen out stones and impurities, directly flowing the soil with low sand content into a mud sedimentation tank, washing the soil with high sand content out sand by a sand washer, and then flowing the soil into the mud sedimentation tank; the water in the mud sedimentation tank is recycled after three-stage sedimentation, and the mud in the mud sedimentation tank is pumped into a storage tank by a mud pump for storage; the slurry is circularly stirred and precipitated in the storage tank, and is conveyed to dewatering equipment by a screw conveyor to be dewatered; and (4) introducing the sewage after the slurry is dehydrated into a third-level sedimentation tank for purification and utilization, and conveying the dehydrated sludge blocks to a storage warehouse.
3. The method for treating and comprehensively utilizing the residual soil according to claim 1 or 2, wherein the comprehensive utilization of the treated pure soil is as follows: processing the mixture into composite fertilizer soil, manufacturing a sintering-free brick and sintering the sintering-free brick into a porous brick.
4. The method for treating and comprehensively utilizing the residual sludge soil according to claim 1 or 2, characterized by further comprising: re-granulation with pure soil comprising:
inputting the treated pure soil into an environment-friendly granulation device for re-granulation processing, adding a proper amount of fly ash, stone powder and water in a stirring process, spraying a quantitative high-molecular curing agent in the middle of stirring, uniformly mixing, then entering a granulation process, and continuously spraying cement powder to wrap particles in the granulation process according to the proportion;
the particles are heated and solidified properly, then are input into a mixing and stirring device, are added with sand, cement and water according to the proportion and are stirred, and are subjected to extrusion forming after being uniformly mixed; the particles solidified at the early stage can be used as a roadbed cushion material and improved soil;
after the extrusion forming process, the produced mortar-like road base material can be directly used and enters a maintenance area for calcification maintenance;
deep processing the cured material, and conveying the material to impact crushing equipment by a belt conveyor for crushing; a totally-enclosed sound insulation device is additionally arranged on the crushing equipment to reduce the working noise, and a dust collector is arranged to control dust pollution;
the recycled aggregate produced by crushing is screened by three-stage screening equipment to obtain three recycled aggregates with the particle sizes of 0-5mm, 5-10mm and 10-30mm, and the aggregate with the particle size of more than 30mm is input into impact crushing equipment to be subjected to back crushing treatment.
5. The method for treating and comprehensively utilizing the residual soil and dregs according to claim 4, characterized in that the screening equipment is additionally provided with a noise reduction device to reduce the working noise while adopting the totally-enclosed working, and the pipeline negative pressure is additionally arranged to collect dust by utilizing the working negative pressure generated by the screening equipment; when the conveyer belt is used for unloading, a humidifier is used for dust fall of aggregates with the particle sizes of 0-5mm, and a spraying device is used for dust fall of aggregates with the particle sizes of 5-10mm and 10-30 mm.
6. The method for treating and comprehensively utilizing the residual sludge soil according to claim 4, wherein the treated pure soil is subjected to granulation processing and post-crushing production to form three kinds of recycled aggregates with the particle sizes of 0-5mm, 5-10mm and 10-30mm, and the aggregates with the particle sizes of 10-30mm are used for producing recycled concrete; aggregate with the particle size of 5-10mm is used for producing the environment-friendly water permeable brick; aggregates with the grain diameter of 0-5mm and 5-10mm are used for producing various environment-friendly building blocks; the three aggregates with the grain diameters of 0-5mm, 5-10mm and 10-30mm can be simultaneously used as roadbed water stabilizing cushion materials.
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| CN108529987A (en) * | 2018-05-22 | 2018-09-14 | 深圳市绿志新型建材研究院有限公司 | A kind of dregs materials for wall and preparation method thereof |
| CN108609956A (en) * | 2018-05-22 | 2018-10-02 | 深圳市绿志新型建材研究院有限公司 | Body refuse soil regeneration baking-free brick and preparation method thereof more than a kind of shock resistance |
| CN109465104A (en) * | 2018-10-20 | 2019-03-15 | 深圳市宏恒星再生科技有限公司 | Remaining body refuse soil processing method |
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| CN108529987A (en) * | 2018-05-22 | 2018-09-14 | 深圳市绿志新型建材研究院有限公司 | A kind of dregs materials for wall and preparation method thereof |
| CN108609956A (en) * | 2018-05-22 | 2018-10-02 | 深圳市绿志新型建材研究院有限公司 | Body refuse soil regeneration baking-free brick and preparation method thereof more than a kind of shock resistance |
| CN109465104A (en) * | 2018-10-20 | 2019-03-15 | 深圳市宏恒星再生科技有限公司 | Remaining body refuse soil processing method |
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| CN110681310A (en) * | 2019-09-02 | 2020-01-14 | 深圳市为海建材有限公司 | Granulation equipment and method for preparing residual sludge soil particles |
| CN110606731A (en) * | 2019-10-10 | 2019-12-24 | 河南建筑材料研究设计院有限责任公司 | Garden floor tile and preparation method for preparing garden floor tile by using urban waste soil |
| CN111170669A (en) * | 2019-12-30 | 2020-05-19 | 同济大学 | Artificial recycled aggregate prepared from engineering waste soil and preparation method thereof |
| CN112138858A (en) * | 2020-08-17 | 2020-12-29 | 中铁南方投资集团有限公司 | Muck resource utilization system |
| CN112138858B (en) * | 2020-08-17 | 2021-07-27 | 中铁南方投资集团有限公司 | Muck resource utilization system |
| CN113771203A (en) * | 2021-09-27 | 2021-12-10 | 福建环球之源环保科技有限公司 | Solid waste soil regenerated particle production system and use method thereof |
| CN115028382A (en) * | 2022-08-10 | 2022-09-09 | 福建南方路面机械股份有限公司 | Process for preparing fluidized treatment soil based on recovered sludge |
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Application publication date: 20171215 |