CN110270588A - A kind of heavy-metal contaminated soil dystopy elution system and control system and method - Google Patents
A kind of heavy-metal contaminated soil dystopy elution system and control system and method Download PDFInfo
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- CN110270588A CN110270588A CN201910660555.1A CN201910660555A CN110270588A CN 110270588 A CN110270588 A CN 110270588A CN 201910660555 A CN201910660555 A CN 201910660555A CN 110270588 A CN110270588 A CN 110270588A
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- 239000002689 soil Substances 0.000 title claims abstract description 76
- 238000010828 elution Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 41
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000010802 sludge Substances 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 38
- 238000005188 flotation Methods 0.000 claims abstract description 30
- 239000010865 sewage Substances 0.000 claims abstract description 28
- 238000012216 screening Methods 0.000 claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 25
- 238000007667 floating Methods 0.000 claims abstract description 24
- 239000013049 sediment Substances 0.000 claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 230000018044 dehydration Effects 0.000 claims abstract description 9
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000004576 sand Substances 0.000 claims description 20
- 230000001112 coagulating effect Effects 0.000 claims description 15
- 238000001556 precipitation Methods 0.000 claims description 14
- 230000003750 conditioning effect Effects 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 12
- 239000002351 wastewater Substances 0.000 claims description 12
- 239000003814 drug Substances 0.000 claims description 9
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- 239000010453 quartz Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 230000001376 precipitating effect Effects 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005345 coagulation Methods 0.000 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 239000000356 contaminant Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005067 remediation Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 8
- 230000008439 repair process Effects 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 239000006004 Quartz sand Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009287 sand filtration Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000010358 mechanical oscillation Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000009291 froth flotation Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to technical field of soil remediation, specifically provide a kind of heavy-metal contaminated soil dystopy elution system and control system and method, contaminated soil is first subjected to crusher size fraction by crushing and screening unit and obtains coarse gravel and mud, then the coarse gravel stirring dehydration is cleaned by elution unit, it is centrifugally separating to obtain small particle gravel, and by surfactant, the small particle gravel and the mud, which are mixed, realizes that FLOTATION SEPARATION obtains the floating outstanding object of pollution and sediment, last mud-water separation unit is by the floating outstanding object of the pollution and sediment is dehydrated respectively and filters pressing obtains clean object and sludge, and by the Treatment of Sludge and recycling and reusing.Program structure is simple, cheap, easy to operate, can efficiently remove the heavy metal contaminants in sewage, reaches the standard of system recycle-water, and high degree of automation, reduces labor intensity and production cost.
Description
Technical field
The invention belongs to technical field of soil remediation, and in particular to a kind of heavy-metal contaminated soil dystopy elution system and control
System and method processed.
Background technique
Heavy-metal contaminated soil dystopy elution technique refer to by physical separation or synergy elution the methods of, addition water or
Under conditions of suitable synergist is as medium, separating beavy metal contaminated soil component or pollutant is made mutually to be transferred to liquid from soil
The technology of phase.
Contaminated soil heterotopic elution technique is important one of soil restoring technology, at home and abroad in contaminated soil remediation
With highly developed and be widely applied.With pollutant process classification is more, processing cost is low, repair short time limit and repairs soil
The advantages that earth is recycling.In recent years, which also there are some system and method about dystopy soil elution technology, in the country to report
Road, but there is certain deficiency.
Complete set of equipments, the patent No. are repaired in a kind of soil heterotopic elution of the Invention Announce of patent No. CN105772497A
A kind of Soil leaching repair system and its method based on decrement concentration design concept of the Invention Announce of CN104475441A, on
Although stating 2 inventions preferably can carry out elution reparation to contaminated soil, in the presence of eluting, device systems are numerous and jumbled, operation is numerous
Trivial, the problems such as equipment attrition is serious.
In view of the various insufficient and limitation of current heavy-metal contaminated soil elution repair process method and system, one kind is developed
Heavy-metal contaminated soil that is economic and practical, facilitating operation, which elutes repair system and method, has important social effect and environment valence
Value.
Summary of the invention
The purpose of the present invention is overcome the problems, such as the numerous and jumbled inefficiency of soil repair system in the prior art.
For this purpose, the present invention provides a kind of heavy-metal contaminated soil dystopy elution system, including crushing and screening unit, elution
Unit, mud-water separation unit and sewage treatment and reuse unit；
The crushing and screening unit obtains coarse gravel and mud for being crushed contaminated soil and carrying out size fraction；
The elution unit is used to clean the coarse gravel stirring dehydration, is centrifugally separating to obtain small particle gravel, and
Surfactant, the small particle gravel and the mud are mixed and realize that FLOTATION SEPARATION obtains the floating outstanding object of pollution and precipitating
Object；
The mud-water separation unit is used for the floating outstanding object of the pollution and sediment is dehydrated respectively and filters pressing obtains clean object
And sludge；
The sewage treatment and reuse unit are for recycling the Treatment of Sludge.
Preferably, the crushing and screening unit includes that sequentially connected roller type sifting crusher, charging belt and bilayer are wet
Method vibrating screen, the charging belt top are equipped with the iron remover for absorbing metal.
Preferably, the stationary grizzly that aperture is 300mm is installed at the top feeding port of kibbler roll.
Preferably, the elution unit includes screw sand washer, hydrocyclone, stirred tank and flotation device, the spiral
Sand washer is connect with the coarse gravel outlet of the crushing and screening unit, and the water conservancy cyclone goes out with the screw sand washer
Mouth connection, the outlet of the water conservancy cyclone are connect with the stirred tank, and the outlet of the stirred tank is connect with the flotation device.
Preferably, the mud-water separation unit includes plate and frame type filter-press and spiral sludge dewatering machine, the plate and frame pressure
Filter is used to obtain the sediment filters pressing clean soil, and the spiral sludge dewatering machine is used to take off the floating outstanding object of the pollution
Water obtains clean soil and clean gravel.
Preferably, the sewage treatment and reuse unit include conditioning tank, coagulative precipitation tank, medicament agitator and quartz sand
Filter, the conditioning tank, the coagulative precipitation tank, medicament agitator and the quartz filter along waste water circulating direction according to
Secondary connection.
Preferably, the coagulative precipitation tank includes reaction zone and settling zone, and the reaction zone is for adding medicament and pollution
Floating outstanding object reacts to form floccule body, and the settling zone is used to the floccule body carrying out mud-water separation.
The present invention provides a kind of heavy-metal contaminated soil dystopy elution process, comprising:
S01: contaminated soil is subjected to crusher size fraction by crushing and screening unit and obtains coarse gravel and mud；
S02: being cleaned the coarse gravel stirring dehydration by elution unit, be centrifugally separating to obtain small particle gravel, and
Surfactant, the small particle gravel and the mud are mixed and realize that FLOTATION SEPARATION obtains the floating outstanding object of pollution and precipitating
Object；
S03: mud-water separation unit is by the floating outstanding object of the pollution and sediment is dehydrated respectively and filters pressing obtains clean object and dirt
Mud；
S04: by the Treatment of Sludge and recycling and reusing.
Preferably, the step S02: surfactant, the small particle gravel and the mud are mixed in stirred tank
Flotation device is entered after closing stirring, the flotation device generates bubble, and pollutant is adsorbed in bubble week during bubble floating
The water surface is enclosed and is finally brought to, to be enriched in the form of foam sludge.
The present invention also provides a kind of such as preceding described in any item heavy-metal contaminated soil dystopys to elute control systems, including
Remote control module, data acquisition module, monitoring module and power distribution cabinet；
The remote control module is for controlling crushing and screening unit, elution unit, mud-water separation unit and sewage treatment
And the linkage of reuse unit；
The data acquisition module is for acquiring crushing and screening unit, elution unit, mud-water separation unit and sewage treatment
And the job information of reuse unit；
The monitoring module is for monitoring crushing and screening unit, elution unit, mud-water separation unit and sewage treatment and returning
With the working condition of unit；
The power distribution cabinet is used to power to the remote control module, data acquisition module and monitoring module.
Beneficial effects of the present invention: this heavy-metal contaminated soil dystopy elution system and control system provided by the invention
And method, contaminated soil is first subjected to crusher size fraction by crushing and screening unit and obtains coarse gravel and mud, then
The coarse gravel stirring dehydration is cleaned by elution unit, is centrifugally separating to obtain small particle gravel, and by surfactant,
The small particle gravel and the mud, which are mixed, realizes that FLOTATION SEPARATION obtains the floating outstanding object of pollution and sediment, last muddy water point
The floating outstanding object of the pollution and sediment are dehydrated respectively from unit and filters pressing obtains clean object and sludge, and by the Treatment of Sludge
And recycling and reusing.Program structure is simple, cheap, easy to operate, can efficiently remove the heavy metal pollution in sewage
Object reaches the standard of system recycle-water, and high degree of automation, reduces labor intensity and production cost.
The present invention is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is the principle of work and power schematic diagram of heavy-metal contaminated soil dystopy elution system and method for the present invention；
Fig. 2 is the structural schematic diagram of heavy-metal contaminated soil dystopy elution system.
Description of symbols: kibbler roll 1, charging belt 2, iron remover 3, double-deck Wet method vibration screen 4, screw sand washer
5, hydrocyclone 6, hydrops pond 7, Pulp pump 8, stirred tank 9, flotation device 10, plate and frame type filter-press 11, spiral sludge dewatering machine
12, conditioning tank 13, medicament agitator 14, coagulative precipitation tank 15, quartz filter 16, reuse pool 17.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", "upper", "lower", "front", "rear", " left side ",
The orientation or positional relationship of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on the figure
Orientation or positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features；In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or
It is more than two.
The embodiment of the invention provides a kind of heavy-metal contaminated soil dystopy elution system, including crushing and screening unit, wash
De- unit, mud-water separation unit and sewage treatment and reuse unit；
The crushing and screening unit obtains coarse gravel and mud for being crushed contaminated soil and carrying out size fraction；
The elution unit is used to clean the coarse gravel stirring dehydration, is centrifugally separating to obtain small particle gravel, and
Surfactant, the small particle gravel and the mud are mixed and realize that FLOTATION SEPARATION obtains the floating outstanding object of pollution and precipitating
Object；
The mud-water separation unit is used for the floating outstanding object of the pollution and sediment is dehydrated respectively and filters pressing obtains clean object
And sludge；Wherein clean object includes clean soil and clean gravel.
The sewage treatment and reuse unit are for recycling the Treatment of Sludge.
It follows that as depicted in figs. 1 and 2, system, the unit including 5 skid structures: crushing and screening unit, elution
Unit, mud-water separation unit, sewage treatment and reuse unit can also include automatic control unit, pass through automatic control unit
Realize automation.
As one of embodiment, the crushing and screening unit includes roller type sifting crusher 1, charging belt 2, iron remover 3
With the double-deck Wet method vibration screen 4.The kibbler roll 1, the iron remover 3, the double-deck Wet method vibration screen 4 are along logistics circulation side
To being sequentially connected, the charging belt 2 connects tie as it.1 top feeding port of kibbler roll installation aperture is
The stationary grizzly of 300mm, can obstruct super large block concrete and build slag and enter soil elution repair system.The kibbler roll is adopted
It with special sharp tooth crushing teeth, can effectively increase pan feeding particle size range, reduce dust content, reduce wear rate, it is lower
Device height be convenient for skid structure design.The iron remover is electric magnetic iron remover, can remove the scrap iron in contaminated soil.
The screen distance of the bilayer Wet method vibration screen two layer screen 4 is respectively 5mm and 0.5mm from top to bottom.The bilayer Wet method vibration screen 4
Two sides are symmetrically installed 4 groups of high-pressure spray devices obliquely.Pass through the mechanical oscillation of vibrating screen and the high pressure of high-pressure spray device
Rinse the size fraction for realizing contaminated soil and preliminary elution.The charging belt is equipped with belted electronic balance and is used to pollute processing
The metering of soil.
As one of embodiment, the elution unit includes screw sand washer 5, hydrocyclone 6, stirred tank 9, flotation device
10.The elution of gravel of the screw sand washer 5 on the double-deck Wet method vibration screen 5mm sieve, by gravel and water flow,
The pollutant on the friction elution gravel surface between gravel and gravel and gravel and screw, while realizing that gravel is dehydrated.
Coarse grain component and the screw sand washer 5 of the hydrocyclone 6 on the double-deck Wet method vibration screen 0.5mm sieve
The stirring of underflow component is cleaned and classification, in component the granularity particle different with density due to the centrifugal force being subject to it is different,
Movement velocity, acceleration and direction in hydrocyclone 6 is also different, and thick and weight particle is thrown by centrifugal force is larger
To barrel, by spiral trajectory backspin to bottom, be discharged as desilting from desilting mouth, thin and light particle, by centrifugal force compared with
It is small, inside spin stream is centrally formed in conical shell and is moved upwards, and is discharged as overflow from overflow port.The stirred tank 9 is for converging
Collect the double-deck Wet method vibration screen and sieve lower mud and 6 overflow product of the hydrocyclone i.e. small particle gravel, is stirred described
It mixes and proper amount of surfactant is added as needed in slot 9 and is sufficiently stirred.The flotation device 10 is used for in the stirred tank 9
Mud carries out FLOTATION SEPARATION, and air is passed through inside the flotation device 10, forms bubble, and pollutant is inhaled during bubble floating
It invests around bubble and is finally brought to the water surface, to be enriched in the form of foam sludge.
As one of embodiment, the mud-water separation unit includes plate and frame type filter-press 11, spiral sludge dewatering machine 12, and two
Platform Pulp pump.The plate and frame type filter-press 11 is used to handle product in the slot of the flotation device 10, utilizes a wherein Pulp pump
Product in slot is squeezed into the plate and frame type filter-press 11.The spiral sludge dewatering machine 12 is used to handle the bubble of the flotation device 11
Foam sludge is squeezed into the spiral sludge dewatering machine 12 using another Pulp pump by foam sludge.In the slot of the flotation device 10
Clean soil resource utilization together with clean gravel is used as after product dehydrate, the foam sludge dewatering of the flotation device 10 is dry
Afterwards as non-harmful rubbish outward transport disposition etc..
As one of embodiment, the waste water treating and reutilizing unit includes conditioning tank 13, coagulative precipitation tank 15, quartz sand mistake
Module and sludge treating system are filtered, the conditioning tank 13, the coagulative precipitation tank 15, the quartz sand filtration module are along waste water stream
Logical direction is sequentially connected.The coagulative precipitation tank 15 moves towards connection along sludge with medicament agitator 14.The conditioning tank 13 is main
Effect is to collect waste water and play regulatory role to the water quality and water of waste water, and the water supply of subsequent job is made to reach the effect of homogeneous average
Fruit mitigates subsequent processing device load.The coagulative precipitation tank 15 is made of reaction zone and settling zone.The reaction zone is mainly
Adding various medicaments makes it react to form floccule body with the floating outstanding object of the pollution in waste water, the settling zone mainly by floccule body into
Row mud-water separation.The settling zone is equipped with inclined tube filler, in the sludgd deposition to bucket after mud-water separation, is periodically promoted to sludge
Pond, supernatant then pass through the filtered water tank of effluent weir overflow to the coagulative precipitation tank, are then promoted by elevator pump to the stone
Sand filtration system.The quartz sand filtration module is made of quartz filter 16 and reuse pool 17.Waste water is through the stone
Enter the reuse pool after sand filter to store, the reuse pool is the backwash of the quartz filter also by pump
Water source is provided.Meanwhile the water of the reuse pool 17 is used for the screw sand washer 5 of the elution unit, hydrocyclone 6, stirs
Mix the supplement water of slot 9, flotation device 10.The sludge treating system is made of sludge-tank and spiral sludge dewatering machine 12.Into
The sludge of the sludge-tank is periodically promoted to the spiral sludge dewatering machine 12 and carries out filters pressing.Filtrate is back to the conditioning tank
13, dewatered sludge then transports outward disposition.The waste water treating and reutilizing unit and the folded spiral shell of the mud-water separation units shared one are dirty
Mud dewaterer 12.
The embodiment of the invention also provides a kind of heavy-metal contaminated soil dystopys to elute restorative procedure, includes the following steps:
Step 1, heavy-metal contaminated soil enter kibbler roll 1, roll-type by external mechanical (such as excavator) addition
Solids barrier on crusher 1 can remove the super large block concrete in contaminated soil and build slag, after being crushed by kibbler roll 1
Contaminated soil transported by charging belt 2 to the double-deck Wet method vibration screen 4, the belted electronic balance that charging belt 2 is equipped with can be used
It can remove the scrap iron in contaminated soil in the iron remover 3 of the metering of contaminated soil, 2 top of charging belt.Into the double-deck wet process
The contaminated soil of vibrating screen 4 passes through the mechanical oscillation of the double-deck Wet method vibration screen 4 and the high pressure washing of high-pressure spray device realizes dirt
The size fraction for contaminating soil and tentatively elution.
Step 2, the gravel on the double-deck Wet method vibration screen 45mm sieve enter screw sand washer 5, by gravel and water flow,
The pollutant on the friction elution gravel surface between gravel and gravel and gravel and screw, elutes clean gravel from spiral shell
The upper outlet for revolving sand washer 5 excludes.Coarse granule in the underflow of screw sand washer 5 and the double-deck Wet method vibration screen 40.5mm sieve
Component, which is raised by Pulp pump 8 from mud buffer pool, to be sent to hydrocyclone 6, and the bulky grain in component is from the bottom of hydrocyclone 6
Portion's desilting mouth excludes, and is sent by Pulp pump 8 to screw sand washer 5 and forms closed cycle, and the fine grained in component is from hydraulic cyclone
The overflow port discharge of device 6 enters stirred tank 9 together with the undersized product of bilayer Wet method vibration screen 4, and mud is in stirred tank 9 and table
Gravity flow enters in flotation device 10 after the effect of face activating agent, is separated the pollutant in mud with soil by froth flotation.
Step 3, product is delivered to plate and frame type filter-press 11 by Pulp pump 8 and is carried out dehydrating in the slot of flotation device 10,
Dewatered clean soil resource utilization together with clean gravel, the water detached enter the conditioning tank of sewage treatment unit.
The foam sludge of flotation device 10 is delivered to spiral sludge dewatering machine 12 by Pulp pump 8, transports outward after dehydration as non-harmful rubbish
Disposition etc., the water detached enters the conditioning tank of sewage treatment unit.
Step 4, the sewage generated in step 3 enter conditioning tank and carry out homogeneous average processing, then promoted by sewage pump
To coagulative precipitation tank 15, first add the pH that alkali adjusts sewage in reaction zone, then add heavy metal chelating agent capture heavy metal from
Son, last dosing coagulant PAC and PAM make the suspended matter particle unstability in waste water, and micelle object, which agglomerates, increases particle,
Form floccule body, alumen ustum.Floccule body enters settling zone and carries out mud-water separation.The supernatant liquor pumping that 15 overflow of coagulative precipitation tank goes out
To quartz sand filtration system.Quartz filter 16 further removes the heavy metal contaminants in waste water, reaches fine filtering effect
Fruit.Treated, and waste water enters reuse pool storage, is subsequently used for the double-deck Wet method vibration screen 4, screw sand washer 5, hydraulic cyclone
The supplement water and anti-scouring water of the equipment such as device 6 and quartz filter 16.Described in sludge-tank storage in sludge treating system
The come sludge of coagulative precipitation tank, and be periodically promoted to spiral sludge dewatering machine 12 and carry out filters pressing.
The embodiment of the present invention, which at least has the following beneficial effects:, carries out brokenly heavy-metal contaminated soil feeding kibbler roll
Broken processing, can effectively be crushed contaminated soil, and contaminated soil is transported by charging belt to the process of the double-deck Wet method vibration screen
In, iron remover can effectively remove the scrap iron in contaminated soil.Into the double-deck Wet method vibration screen contaminated soil in mechanical oscillation
The partial size composition different with can effectively be divided into three kinds under high pressure water flushing action.The maximum gravel of partial size passes through spiral washed-out sand
Machine can effectively remove the pollutant on gravel surface, and be dehydrated and to form clean gravel.The coarse granule and spiral of medium grain size
The underflow product of sand washer can further be rubbed decontamination and classification by hydrocyclone, so that it is thick to form hydrocyclone desilting
Grade is back to the closed circuit flow of screw sand washer.It is produced under the sieve of the overflow fine grained of hydrocyclone and the double-deck Wet method vibration screen
Product pass through flotation device froth flotation after being sufficiently stirred by stirred tank with surfactant, final to realize heavy metal contaminants and do
The separation of pure land earth.Plate and frame type filter-press and spiral sludge dewatering machine can effectively remove the water of clean soil and sludge respectively
Point.Sewage treatment and reuse unit by coagulating sedimentation and filter the heavy metal contaminants that can effectively remove in sewage, reach
To the standard of system recycle-water.Automatic control unit can carry out Automatic Control to above procedure, and staff only needs a people
Periodical inspection checks operating condition, greatly reduction labor intensity.
The heavy-metal contaminated soil dystopy elution repair system that the present embodiment proposes is suitable to contaminated soil soil property and moisture content
It answers that range is wide, processing capacity is big, repairing effect is good, secondary pollution is low, high degree of automation, can be used for various heavy metal polluted soils
The reparation of earth has good environmental benefit and social benefit.
The present embodiment additionally provides a kind of heavy-metal contaminated soil dystopy elution control system, including remote control module,
Data acquisition module, monitoring module and power distribution cabinet；
The remote control module is for controlling crushing and screening unit, elution unit, mud-water separation unit and sewage treatment
And the linkage of reuse unit；
The data acquisition module is for acquiring crushing and screening unit, elution unit, mud-water separation unit and sewage treatment
And the job information of reuse unit；
The monitoring module is for monitoring crushing and screening unit, elution unit, mud-water separation unit and sewage treatment and returning
With the working condition of unit；
The power distribution cabinet is used to power to the remote control module, data acquisition module and monitoring module.
Control system controls entire elution system and realizes automatically working.
Beneficial effects of the present invention: this heavy-metal contaminated soil dystopy elution system and control system provided by the invention
And method, contaminated soil is first subjected to crusher size fraction by crushing and screening unit and obtains coarse gravel and mud, then
The coarse gravel stirring dehydration is cleaned by elution unit, is centrifugally separating to obtain small particle gravel, and by surfactant,
The small particle gravel and the mud, which are mixed, realizes that FLOTATION SEPARATION obtains the floating outstanding object of pollution and sediment, last muddy water point
The floating outstanding object of the pollution and sediment are dehydrated respectively from unit and filters pressing obtains clean object and sludge, and by the Treatment of Sludge
And recycling and reusing.Program structure is simple, cheap, easy to operate, can efficiently remove the heavy metal pollution in sewage
Object reaches the standard of system recycle-water, and high degree of automation, reduces labor intensity and production cost.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (10)
1. a kind of heavy-metal contaminated soil dystopy elution system, it is characterised in that: including crushing and screening unit, elution unit, mud
Water separative unit and sewage treatment and reuse unit；
The crushing and screening unit obtains coarse gravel and mud for being crushed contaminated soil and carrying out size fraction；
The elution unit is used to clean the coarse gravel stirring dehydration, is centrifugally separating to obtain small particle gravel, and by table
Face activating agent, the small particle gravel and the mud, which are mixed, realizes that FLOTATION SEPARATION obtains the floating outstanding object of pollution and sediment；
The mud-water separation unit is used for the floating outstanding object of the pollution and sediment is dehydrated respectively and filters pressing obtains clean object and dirt
Mud；
The sewage treatment and reuse unit are for recycling the Treatment of Sludge.
2. heavy-metal contaminated soil dystopy elution system according to claim 1, it is characterised in that: the crushing and screening list
Member includes sequentially connected roller type sifting crusher, charging belt and the double-deck Wet method vibration screen, is equipped with above the charging belt
For absorbing the iron remover of metal.
3. heavy-metal contaminated soil dystopy elution system according to claim 2, it is characterised in that: the top of kibbler roll
The stationary grizzly that aperture is 300mm is installed at portion's feeding port.
4. heavy-metal contaminated soil dystopy elution system according to claim 1, it is characterised in that: the elution unit packet
Screw sand washer, hydrocyclone, stirred tank and flotation device are included, the screw sand washer is coarse with the crushing and screening unit
Gravel outlet connection, the water conservancy cyclone connect with the outlet of the screw sand washer, the outlet of the water conservancy cyclone and
The stirred tank connection, the outlet of the stirred tank is connect with the flotation device.
5. heavy-metal contaminated soil dystopy elution system according to claim 1, it is characterised in that: the mud-water separation list
Member includes plate and frame type filter-press and spiral sludge dewatering machine, and the plate and frame type filter-press is for being done the sediment filters pressing
Pure land earth, the spiral sludge dewatering machine are used to be dehydrated the floating outstanding object of the pollution to obtain clean soil and clean gravel.
6. heavy-metal contaminated soil dystopy elution system according to claim 1, it is characterised in that: the sewage treatment and
Reuse unit includes conditioning tank, coagulative precipitation tank, medicament agitator and quartz filter, and the conditioning tank, the coagulation are heavy
Shallow lake pond, medicament agitator and the quartz filter are sequentially connected along waste water circulating direction.
7. heavy-metal contaminated soil dystopy elution system according to claim 6, it is characterised in that: the coagulative precipitation tank
Including reaction zone and settling zone, the reaction zone reacts to form floccule body for adding medicament with the floating outstanding object of pollution, the precipitating
Area is used to the floccule body carrying out mud-water separation.
8. a kind of heavy-metal contaminated soil dystopy elution process characterized by comprising
S01: contaminated soil is subjected to crusher size fraction by crushing and screening unit and obtains coarse gravel and mud；
S02: being cleaned the coarse gravel stirring dehydration by elution unit, be centrifugally separating to obtain small particle gravel, and by table
Face activating agent, the small particle gravel and the mud, which are mixed, realizes that FLOTATION SEPARATION obtains the floating outstanding object of pollution and sediment；
S03: mud-water separation unit is by the floating outstanding object of the pollution and sediment is dehydrated respectively and filters pressing obtains clean object and sludge；
S04: by the Treatment of Sludge and recycling and reusing.
9. heavy-metal contaminated soil dystopy elution system according to claim 8, which is characterized in that the step S02:
Flotation device, the flotation are entered after surfactant, the small particle gravel and the mud are mixed in stirred tank
Machine generates bubble, and pollutant is adsorbed in around bubble and is finally brought to the water surface during bubble floating, thus with foam
The form of sludge is enriched with.
10. a kind of heavy-metal contaminated soil dystopy according to any one of claims 1 to 7 elutes control system, feature
It is: including remote control module, data acquisition module, monitoring module and power distribution cabinet；
The remote control module is for controlling crushing and screening unit, elution unit, mud-water separation unit and sewage treatment and returning
With the linkage of unit；
The data acquisition module is for acquiring crushing and screening unit, elution unit, mud-water separation unit and sewage treatment and returning
With the job information of unit；
The monitoring module is for monitoring crushing and screening unit, elution unit, mud-water separation unit and sewage treatment and reuse list
The working condition of member；
The power distribution cabinet is used to power to the remote control module, data acquisition module and monitoring module.
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| CN201910660555.1A CN110270588A (en) | 2019-07-22 | 2019-07-22 | A kind of heavy-metal contaminated soil dystopy elution system and control system and method |
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Application publication date: 20190924 |