CN204981547U - Minimizing of pipe duct mud and innocent treatment device - Google Patents
Minimizing of pipe duct mud and innocent treatment device Download PDFInfo
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- CN204981547U CN204981547U CN201520566383.9U CN201520566383U CN204981547U CN 204981547 U CN204981547 U CN 204981547U CN 201520566383 U CN201520566383 U CN 201520566383U CN 204981547 U CN204981547 U CN 204981547U
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Abstract
The utility model belongs to the sludge treatment field, concretely relates to minimizing of pipe duct mud and innocent treatment device. Minimizing of pipe duct mud and innocent treatment device includes mud storage pool, mix selector, feeding machine, washing device, friction spring sorter, mud water separator, jigging machine, one -level swirler, two - stage swirler, coagulating sedimentation device, swaging machine, spiral chute, pressure filter, dewatering screen, particulate footpath dewatering screen, shake sieve, storage dressing trough, sand washer, conveyor, slag charge collection device, sand collection device soon. Adopt after the device carried out minimizing of pipe duct mud and innocent treatment, pipe duct mud volume dwindled greatly, and harmful substance's content greatly reduced in the pipe duct mud has still carried out wet process fine separation to pipe duct mud simultaneously, has gone on rationally recycling to each resource of after -separating.
Description
Technical field
The utility model belongs to field of sludge treatment, is specifically related to a kind of pipe duct sludge reduction and harmless treatment device.
Background technology
Along with China strengthens the strength disposal of city domestic sewage and trade effluent, Water Pollution Control Engineering starts on a large scale, and the specific resistance to filtration problem come along with sewage disposal becomes increasingly conspicuous.In addition, along with the raising of rainfall and sewage pipes road and pumping plant conveyance power of water, have a large amount of sanitary sewage containing particulate matter, impurity every day and trade effluent enters drainage pipeline delivery system, regularly must drag for clearly, cause ditch mud and pumping plant Municipal Garbage Yield also significantly to increase thereupon.
At present, the mud that domestic drainage pipeline produces, dredge mainly through machinery or manually draw clearly to mud transport trolley, mud scoop cycle, transport to mud transit depot again, refuse landfill is transported to through secondary after mummification, a small amount of mud is directly entrusted environmental sanitation vehicles to transport outward and is disposed, and transports outward disposal after separately having part to mix with dregs.In whole outward transport disposal process, the problems such as ubiquity evaporating, emitting, dripping or leaking of liquid or gas, supervision disappearance, easily cause secondary pollution.
The drawback of existing sludge treating method:
1) airing on the spot: moisture percentage in sewage sludge is higher, dispose last as all need to carry out processed to it, because current processing horizontal limit, the general mode taking airing on the spot more, in airing process, mud distributes stench, poisonous pathogen transmission, affects resident's orthobiosis and physical and mental health, and the complaint case that sewage sludge must be caused to disturb residents rises year by year; Mud airing more options urban green space, infringement urban environment is attractive in appearance.
2) outward transport is stacked: quite a few mud of China is still transported to comparatively lonely and remote outskirts of a town and rural area stacking at present, because the mud stacking point is outdoor storage, sanitary measure is perfect not, plough in heavy metal contamination rural area in mud, serious threat China agricultural safety, mud distributes stench, affects resident's productive life;
3) refuse tip landfill: because moisture percentage in sewage sludge is high, must through airing before entering refuse landfill landfill, and airing field floor space is large, and secondary pollution is serious; Area of heavy rainfull or season not easily dry; Storage mud point, generally away from city, is mostly distributed in beyond Section of Outer Ring Line, near the district of exurb, trucking costs is higher; Water ratio too high in mud and organic content, when with architecture sediment blended landfill, greatly reduce the shear strength of architecture sediment.
Therefore, study a kind of sludge reduction, harmless treatment process is extremely urgent.At present, domestic main employing vibrosieve, hydrocyclone carry out minimizing and sorting process in conjunction with hydrodynamic cleaning, sludge agitation to pipe network mud.The clear and coherent moisture percentage in sewage sludge of domestic sewer is high, not only add the traffic capacity of clear and coherent mud, evaporating, emitting, dripping or leaking of liquid or gas phenomenon even also can be caused to occur, fibre object in pipe network mud, twister etc. easily impact the screen-penetrating performance of vibratory screening apparatus, sewage sludge feed fluctuation of concentration is large, suction-type sewer scavenger, the sludge concentration difference manually drawn clearly are large, cause treatment process job insecurity, treatment effect limited; Tail water solid content is higher, and particularly heavy metal, organism, suspended substance are difficult to be separated, and cause the rate that recycles of process water not high, also have problems to the recycling of later stage mud.Cause current sludge reduction and sorting process very insufficient for all the foregoing reasons, therefore, most of mud is still with very original simple airing process.
Utility model content
The utility model is not enough for prior art, and object is to provide a kind of pipe duct sludge reduction and harmless treatment device.
For realizing above-mentioned utility model object, the technical scheme that the utility model adopts is:
A kind of pipe duct sludge reduction and harmless treatment device, it is characterized in that, comprising: mud deposits pond, mix selector, feeding machine, washing and screening plant, friction bouncing sorter, mud, jig, one-level swirler, second cyclone, coagulative precipitation device, scrubber, spiral chute, pressure filter, draining screen, particulate through draining screen, spin vibration sieve, slurry storage tank, sand washer, e Foerderanlage, slag charge collection device, sand collection device; Pipe duct mud is deposited pond from mud and is sent into feeding machine by described mix selector, and pipe duct mud is assigned to washing and screening plant by described feeding machine, and under the sieve of described washing and screening plant, outlet is connected with mud, and sieve upper outlet is connected with friction bouncing sorter; Two outlets of described friction bouncing sorter are connected with two draining screens respectively, and two draining screens are connected with slag charge collection device by e Foerderanlage again; The sieve upper outlet of described mud is connected with jig, and the lower outlet of sieve is connected with slurry storage tank; Two outlets of described jig are connected with two draining screens respectively, and draining screen is connected with slag charge collection device by e Foerderanlage again; Described slurry storage tank is connected with one-level swirler by transferpump, described one-level swirler overflow outlet be connected in turn with coagulative precipitation device, pressure filter; The underflow outlet of described one-level swirler is connected in turn with scrubber, second cyclone; The overflow outlet of described second cyclone is connected in turn with coagulative precipitation device, pressure filter, and the underflow outlet of described second cyclone is connected with spiral chute; The lightweight thing outlet of described spiral chute is connected with spin vibration sieve, and the outlet of spin vibration sieve screen overflow is connected with pressure filter, and the outlet of spin vibration sieve screen underflow is connected with slurry storage tank; The heavy product exit of described spiral chute is connected with fine grain size draining screen, and fine grain size draining screen sieve upper outlet is connected in turn with sand washer, and screen underflow outlet is connected with slurry storage tank.
In such scheme, described mud deposits top, pond grid cover plate, and the pitch of described grid cover plate can adjust as required between 50 ~ 150mm.
In such scheme, described grille cover strip has vibrating function.
In such scheme, the sorting particle diameter 20 ~ 100mm of described washing and screening plant.
In such scheme, described mud Sieving and casing is 3 ~ 20mm.
In such scheme, described one-level swirler is 30 ~ 50 μm with the meso-position radius that is separated of second cyclone.
In such scheme, the Sieving and casing of described draining screen is 3 ~ 20mm, and the Sieving and casing of described fine grain size draining screen is 0.1mm.
In such scheme, also comprise chemicals dosing plant, described chemicals dosing plant is connected with coagulative precipitation device.
In the utility model, described pipe duct sludge reduction and harmless treatment process device can adopt Embedded PLC automatic control system.
A kind of pipe duct sludge reduction and harmless treatment process, is characterized in that, comprise the steps:
(1) pipe duct mud enters mud through grid cover plate and deposits pond, and large volume foreign material are tackled by grid; Utilize mix selector that pipe duct mud is deposited pond from mud and send into feeding machine, washing and screening plant is assigned to again by feeding machine, after washing and screening plant fragmentation, drip washing and preliminary sorting, obtain slag charge and the solidliquid mixture of 20 ~ 100mm particle diameter, the slag charge engaging friction bouncing sorter sorting of 20 ~ 100mm particle diameter, obtain Large stone incendivity thing and Large stone inorganics, Large stone incendivity thing and Large stone inorganics are delivered to corresponding slag charge collection device by transfer roller after dehydration;
(2) solidliquid mixture that washing and screening plant sorting obtains is delivered to mud, slag charge and the waste liquid of 3 ~ 20mm particle diameter is obtained after screening, waste liquid is delivered to slurry storage tank and stores, the slag charge of 3 ~ 20mm particle diameter enters jig classification, obtain middle particle diameter inorganic thing and middle particle diameter incendivity thing, middle particle diameter inorganic thing and middle particle diameter incendivity thing enter after draining screen fully dewaters respectively, are delivered to corresponding slag charge collection device by transfer roller;
(3) mud is sieved the waste drains pump obtained and deliver to one-level swirler, after abundant rotational flow sorting, obtain heavy product underflow 1 and overflow slurry 1; Heavy product underflow 1 enters scrubber and cleans, be delivered to second cyclone subsequently to carry out secondary sorting and obtain heavy product underflow 2 and overflow slurry 2, be delivered to pressure filter press filtration after overflow slurry 1 and overflow slurry 2 are carried out coagulation concentration and obtain filter cake and filtrate; Heavy product underflow 2 is delivered to after spiral chute is separated and obtains being rich in organic greasy filth and mineral mortar, be rich in organic greasy filth and obtain filter cake and filtrate after spin vibration sieve screening, pressure filter press filtration, mineral mortar obtains mineral sand after the screening of fine grain size draining screen, sand washer cleaning.
In such scheme, described Large stone incendivity thing, middle particle diameter incendivity thing can be used for burning electricity generation or landfill, Large stone inorganics, middle particle diameter inorganic thing can use or direct landfill as rubble after fragmentation, described filter cake can burn or landfill, outer row after the further precipitation process of described filtrate, described mineral sand can be used as construction sand.
In pipe duct sludge reduction described in the utility model and harmless treatment device, the separation principle of washing and screening plant is: washing cylindrical shell is supported by support roller, low speed rotation under the drive of motor, pipe duct mud enters into the cylinder of rotation from opening for feed, constantly be taken up in cylinder and leave, be rinsed water in the process and wash away washing, the frangible rubbish of some bulks is broken, most of organism on rubbish surface and silt can be removed, obtain slag charge and the solidliquid mixture of 20 ~ 100mm particle diameter after washing, enter next technical process respectively.The separation principle of friction bouncing sorter is: when Large stone organism and inorganics fall into swash plate, inorganics and swash plate produce elastic collision, bounce to bottom, inclined-plane, heavy elasticity product collecting bin is entered from swash plate lower end, organism and swash plate plate face are plastic collision, do not produce spring, move upward with swash plate plate conveyor, enter light non-resilient product collection storehouse from swash plate upper end, thus realize being separated of organism and inorganics.The separation principle of jig is: the raising force difference utilizing different densities particle in ascending current because local pressure and settling velocity difference produce, the object that density is large is sunken to bottom jig, little then the rising to jig top and flow away with current of density.The separation principle of scrubber is: utilize whipping appts in scrubber that material is done in scrubber and circumferentially descend tumbling motion, collision friction between material and material, and the grease on material surface and other foreign material of attachment are stripped under frictional force effect.The separation principle of spiral chute is: utilize the material of different densities can produce different power, centrifugal force, frictional force etc. with current in spiral chute, under the comprehensive action of various power, material flows down from the helical channel of spiral chute from eminence, different densities particle produces demixing phenomenon gradually in helical channel flow process, the sand grains that density is large concentrates on internal layer, what density was little is mainly positioned at skin containing the more mud of grease, realizes being separated of sand grains and greasy filth at discharge port.
The utility model beneficial effect: (1) adopts process unit described in the utility model to carry out pipe duct sludge reduction and harmless treatment, high water content sludge impact for environment in transport, treatment and disposal process can be solved, improve the difficult problem that the municipal maintenance department of puzzlement at present high water content sludge is disposed, avoid pipe network mud arbitrarily to be toppled over; (2) after adopting process unit described in the utility model to carry out pipe duct sludge reduction and harmless treatment, pipe duct sludge volume reduces greatly, reduce the transportation cost transporting landfill yard to, effectively alleviate the space pressure of landfill yard, reduced the content of objectionable impurities in pipe duct mud simultaneously by minimizing and harmless treatment, alleviate the secondary pollution to landfill yard; (3) process unit process pipe duct mud described in the utility model is adopted, wet method fine separation has been carried out to pipe duct mud, organism and inorganics can well taxonomic revision, what wherein incendivity thing part calorific value was higher can pass through landfill disposal, also can carry out garbage power, the energy is provided; Mineral sand organic content after process is very low, meets landfill requirement, also can be used as building sand, rationally recycle resource; The inorganic substance organic content of thick, the middle particle diameter obtained after process is low, can as building waste landfill, as construction timber after also can processing further.
Accompanying drawing explanation
Fig. 1 is the utility model pipe duct sludge reduction and harmless treatment process equipment drawing, wherein 1 deposit pond for mud, 2 is mix selector, 3 is feeding machine, 4 is washing and screening plant, 5 is friction bouncing sorter, 6 is mud, 7 is jig, 8 is slurry storage tank, 9 is one-level swirler, 10 is scrubber, 11 is coagulative precipitation device, 12 is second cyclone, 13 is spiral chute, 14 is draining screen, 15 is spin vibration sieve, 16 is sand washer, 17 is sand collection device, 18 is chemicals dosing plant, 19 is pressure filter, 20 is e Foerderanlage, 21 is slag charge collection device, 22 is fine grain size draining screen.
Fig. 2 is pipe duct sludge reduction and harmless treatment process schema.
Embodiment
In order to understand the utility model better, illustrate content of the present utility model further below in conjunction with embodiment, but content of the present utility model is not only confined to the following examples.
See Fig. 1, a kind of pipe duct sludge reduction and harmless treatment process equipment, comprise: mud deposits pond 1, mix selector 2, feeding machine 3, washing and screening plant 4, friction bouncing sorter 5, mud 6, jig 7, slurry storage tank 8, one-level swirler 9, scrubber 10, coagulative precipitation device 11, second cyclone 12, spiral chute 13, draining screen 14, spin vibration sieve 15, sand washer 16, sand collection device 17, chemicals dosing plant 18, pressure filter 19, e Foerderanlage 20, slag charge collection device 21,22 is fine grain size draining screen.Described mix selector 2 sends into feeding machine 3 for pipe duct mud is deposited pond 1 from mud, described feeding machine 3 is for being assigned to washing and screening plant 4 by pipe duct mud, two outlets of described washing and screening plant 4 are connected with friction bouncing sorter 5, mud 6 respectively, two outlets of described friction bouncing sorter 5 are connected with two draining screens 14 respectively, and draining screen 14 is connected with slag charge collection device 21 by e Foerderanlage 20 again; The sieve upper outlet of described mud 6 is connected with jig 7, and the lower outlet of sieve is connected with slurry storage tank 8, and two outlets of described jig 7 are connected with two draining screens 14 respectively, and draining screen 14 is connected with collection device 21 by e Foerderanlage 20 again; Described slurry storage tank 8 is connected with one-level swirler 9 by transferpump; The overflow outlet of described one-level swirler 9 is connected with coagulative precipitation device 11, and coagulative precipitation device 11 is connected with pressure filter 19; The underflow outlet of described one-level swirler 9 is connected with scrubber 10; Scrubber 10 is connected with second cyclone 12; Described second cyclone 12 overflow outlet is connected with coagulative precipitation device 11, and underflow outlet is connected with spiral chute 13; The lightweight thing outlet of described spiral chute 13 is connected with spin vibration sieve 15, and spin vibration sieve 15 screen overflow is delivered to pressure filter 19 filter-press dehydration, and screen underflow outlet is connected with slurry storage tank 8; The heavy product exit of described spiral chute 13 is connected with fine grain size draining screen 22, and the outlet of fine grain size draining screen 22 screen overflow is connected with sand washer 16, and screen underflow outlet is connected with slurry storage tank 8.
In such scheme, described mud deposits top, pond grid cover plate, and the pitch of described grid cover plate can adjust as required between 50 ~ 150mm.Through grid interception, the large volume foreign material that aperture is greater than Grill space are separated, and these foreign material mainly tatter, plastics bag etc., is sent to incineration plant centralized burning after manual sorting's drying.Further, described grille cover strip has vibrating function, and grid is by driven by vibrating motors, and slag charge in oblique front throwing track or oval throwing track, can reduce slag charge remaining on grid on this grid.Grid pitch also can design according to mud granule practical situation.
In such scheme, the sorting particle diameter of described washing and screening plant is 20 ~ 100mm, and the particle separation diameter of washing and screening plant also can carry out adjusting according to a upper flow process Grill space thus reach the object of high efficiency separation.
In such scheme, the Sieving and casing of described mud is 3 ~ 20mm.The particle separation diameter of mud can adjust according to the particle separation diameter of washing and screening plant in supplied materials difference and a upper flow process.Mud can select vibratory screening apparatus also can select trommel screen.
In such scheme, the separation meso-position radius of described one-level swirler and second cyclone is between 30 ~ 50 μm.
In such scheme, the Sieving and casing of described draining screen is 3 ~ 20mm, and the Sieving and casing of described fine grain size draining screen is 0.1mm.
In such scheme, also comprise chemicals dosing plant 18, described chemicals dosing plant 18 is connected with coagulative precipitation device 11.
Embodiment 1
A kind of pipe duct sludge reduction and harmless treatment process, comprise the steps:
(1) pipe duct mud enters mud through grid cover plate and deposits pond, pitch is set to 50 ~ 100mm, tackle through grid, the large volume foreign material that aperture is greater than Grill space are separated, these foreign material mainly tatter, plastics bag etc., after slag scraper cleaning, incineration plant centralized burning is sent in manual sorting's drying; This grid also can adopt the grid of band vibrating function, and grid is by driven by vibrating motors, and slag charge in oblique front throwing track or oval throwing track, can reduce slag charge remaining on grid on this grid; Grid pitch can according to mud granule situation specific design;
(2) most of mud passes through grid, utilize mix selector that pipe duct mud is deposited pond from mud and send into feeding machine, washing and screening plant is assigned to again by feeding machine, after washing and screening plant fragmentation, drip washing and preliminary sorting, obtain slag charge and the solidliquid mixture of 20 ~ 100mm particle diameter, the slag charge engaging friction bouncing sorter of 20 ~ 100mm particle diameter is classified, classification obtains Large stone incendivity thing and Large stone inorganics, Large stone incendivity thing and Large stone inorganics enter after draining screen fully dewaters respectively, are delivered to corresponding collection device by handling equipment; The particle separation diameter of washing and screening plant also can carry out adjusting according to a upper flow process Grill space thus reach the object of high efficiency separation;
(3) solidliquid mixture that washing and screening plant sorting obtains is delivered to mud, slag charge and the waste liquid of 3 ~ 20mm particle diameter is obtained after separating treatment, waste liquid is delivered to slurry storage tank and stores, the slag charge of 3 ~ 20mm particle diameter enters jig and classifies, classification obtains middle particle diameter inorganic thing and middle particle diameter incendivity thing, middle particle diameter inorganic thing and middle particle diameter incendivity thing enter after draining screen fully dewaters respectively, are delivered to corresponding collection device by handling equipment;
(4) mud is sieved the waste drains pump obtained and deliver to one-level swirler, after abundant rotational flow sorting, obtain heavy product underflow 1 and overflow slurry 1; Heavy product underflow 1 enters scrubber and cleans, be delivered to second cyclone subsequently to carry out secondary sorting and obtain heavy product underflow 2 and overflow slurry 2, be delivered to pressure filter press filtration after overflow slurry 1 and overflow slurry 2 are carried out coagulation concentration and obtain filter cake and filtrate, for improving efficiency of press filtering, flocculating aids can be added in coagulation concentration process; Heavy product underflow 2 is delivered to after spiral chute is separated and obtains being rich in organic greasy filth and mineral mortar, be rich in organic greasy filth and obtain filter cake and filtrate after spin vibration sieve screening, pressure filter press filtration, mineral mortar obtains mineral sand after the screening of fine grain size draining screen, sand washer cleaning.
In the present embodiment, the Large stone incendivity thing collected, middle particle diameter combustiblematerials belong to the higher combustiblerefuse of calorific value, can be used for burning electricity generation or landfill disposal, the middle particle diameter inorganic thing collected, Large stone inorganics can use or direct landfill as rubble after fragmentation, collect the filter cake obtained to can be used for burning or landfill, the mineral sand collected can meet landfill and requires or be used as construction sand, outer row after the further precipitation process of filtrate.
Obviously, above-described embodiment is only for the example done clearly is described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And therefore amplified apparent change or variation are still within the protection domain of the utility model creation.
Claims (8)
1. a pipe duct sludge reduction and harmless treatment device, it is characterized in that, comprising: mud deposits pond, mix selector, feeding machine, washing and screening plant, friction bouncing sorter, mud, jig, one-level swirler, second cyclone, coagulative precipitation device, scrubber, spiral chute, pressure filter, draining screen, fine grain size draining screen, spin vibration sieve, slurry storage tank, sand washer, e Foerderanlage, slag charge collection device, sand collection device; Pipe duct mud is deposited pond from mud and is sent into feeding machine by described mix selector, and pipe duct mud is assigned to washing and screening plant by described feeding machine, and under the sieve of described washing and screening plant, outlet is connected with mud, and sieve upper outlet is connected with friction bouncing sorter; Two outlets of described friction bouncing sorter are connected with two draining screens respectively, and draining screen is connected with slag charge collection device by e Foerderanlage again; The sieve upper outlet of described mud is connected with jig, and the lower outlet of sieve is connected with slurry storage tank; Two outlets of described jig are connected with two draining screens respectively, and two draining screens are connected with slag charge collection device by e Foerderanlage again; Described slurry storage tank is connected with one-level swirler by transferpump, described one-level swirler overflow outlet be connected in turn with coagulative precipitation device, pressure filter; The underflow outlet of described one-level swirler is connected in turn with scrubber, second cyclone; The overflow outlet of described second cyclone is connected in turn with coagulative precipitation device, pressure filter, and the underflow outlet of described second cyclone is connected with spiral chute; The lightweight thing outlet of described spiral chute is connected with spin vibration sieve, and the outlet of spin vibration sieve screen overflow is connected with pressure filter, and the outlet of spin vibration sieve screen underflow is connected with slurry storage tank; The heavy product exit of described spiral chute is connected with fine grain size draining screen, and fine grain size draining screen sieve upper outlet is connected in turn with sand washer, and screen underflow outlet is connected with slurry storage tank.
2. pipe duct sludge reduction according to claim 1 and harmless treatment device, is characterized in that, described mud deposits top, pond grid cover plate, and the pitch of described grid cover plate is set to 50 ~ 150mm.
3. pipe duct sludge reduction according to claim 2 and harmless treatment device, is characterized in that, described grille cover strip has vibrating function.
4. pipe duct sludge reduction according to claim 1 and harmless treatment device, is characterized in that, the particle separation diameter of described washing and screening plant is 20 ~ 100mm.
5. pipe duct sludge reduction according to claim 1 and harmless treatment device, is characterized in that, the Sieving and casing of described mud is 3 ~ 20mm.
6. pipe duct sludge reduction according to claim 1 and harmless treatment device, is characterized in that, described one-level swirler is 30 ~ 50 μm with the meso-position radius that is separated of second cyclone.
7. pipe duct sludge reduction according to claim 1 and harmless treatment device, is characterized in that, the Sieving and casing of described draining screen is 3 ~ 20mm, and the Sieving and casing of described fine grain size draining screen is 0.1mm.
8. pipe duct sludge reduction according to claim 1 and harmless treatment device, is characterized in that, also comprise chemicals dosing plant, and described chemicals dosing plant is connected with coagulative precipitation device.
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CN105000783A (en) * | 2015-07-31 | 2015-10-28 | 三川德青科技有限公司 | Pipe duct sludge reduction and innocent treatment technology and device |
CN108218181A (en) * | 2018-02-13 | 2018-06-29 | 沈阳环境科学研究院 | A kind of river and lake pool gushes bed mud deep-graded processing system and method |
CN108654205A (en) * | 2018-06-16 | 2018-10-16 | 康明克斯(北京)机电设备有限公司 | Mud and water separating equipment and method for mud caused by shield machine digging operation |
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CN108218181A (en) * | 2018-02-13 | 2018-06-29 | 沈阳环境科学研究院 | A kind of river and lake pool gushes bed mud deep-graded processing system and method |
CN108654205A (en) * | 2018-06-16 | 2018-10-16 | 康明克斯(北京)机电设备有限公司 | Mud and water separating equipment and method for mud caused by shield machine digging operation |
CN109293207A (en) * | 2018-11-20 | 2019-02-01 | 大连德联科技有限公司 | One kind containing heavy metal and the biggish riverway sludge renovation technique of silt content |
CN110560258A (en) * | 2019-09-23 | 2019-12-13 | 山东科技大学 | device and process for selecting ultra-clean coal from jigging overflow coal slime through physical cyclone recovery |
CN110560258B (en) * | 2019-09-23 | 2023-09-29 | 山东科技大学 | Device and process for selecting ultra-clean coal by physical cyclone recovery jigging overflow coal slime |
CN110862212A (en) * | 2019-12-17 | 2020-03-06 | 湖北加德科技股份有限公司 | System and process for grading treatment and resource utilization of river and lake bottom mud |
CN111282707A (en) * | 2020-03-19 | 2020-06-16 | 深圳市工勘岩土集团有限公司 | Washing, filtering, purifying and separating system and method for sandy soil in foundation pit excavation |
CN113683274A (en) * | 2021-08-03 | 2021-11-23 | 山东省环境保护科学研究设计院有限公司 | System and method for ex-situ treatment of sludge in urban pipe gallery |
WO2023010616A1 (en) * | 2021-08-03 | 2023-02-09 | 山东省环境保护科学研究设计院有限公司 | System and method for ex-situ treatment of urban pipe gallery sludge |
CN114804551A (en) * | 2022-03-25 | 2022-07-29 | 中瑞(苏州)资源环境科技有限公司 | One-stop method for sludge disposal and resource utilization for ecological restoration |
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