CN114160561A - Equipment system for treating heavy metal contaminated soil - Google Patents
Equipment system for treating heavy metal contaminated soil Download PDFInfo
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- CN114160561A CN114160561A CN202111551259.1A CN202111551259A CN114160561A CN 114160561 A CN114160561 A CN 114160561A CN 202111551259 A CN202111551259 A CN 202111551259A CN 114160561 A CN114160561 A CN 114160561A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/22—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by pressing in moulds or between rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/004—Devices for shaping artificial aggregates from ceramic mixtures or from mixtures containing hydraulic binder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
- B28B17/026—Conditioning ceramic materials
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- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Processing Of Solid Wastes (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses an equipment system for treating heavy metal contaminated soil, which comprises a soil pretreatment system A, a screening and leaching system B, a ceramsite manufacturing system C, wherein the soil pretreatment system A comprises an excavator, a crushing and screening hopper, a feeding bin and a first belt conveyor, the first belt conveyor is externally connected with a first vibration screening machine, the first vibration screening machine belongs to the part of the screening and leaching system B, the system further comprises a second vibration screening machine, a second belt conveyor, a first stirring tank, a concentration and mixing tank, a first feeding pipeline, a first lifting conveyor, a plate-and-frame filter press, a waste water pipeline and a waste water tank, and the first lifting conveyor is externally connected with a roller dryer. The invention not only realizes the quick three-stage screening of the heavy metal cadmium contaminated soil by the equipment, facilitates the export and cleaning of the soil with different grain diameters, but also improves the recovery and utilization rate of the soil.
Description
Technical Field
The invention relates to the technical field of contaminated soil treatment equipment, in particular to an equipment system for treating heavy metal contaminated soil.
Background
The heavy metal is widely applied in the process, such as the heavy metal cadmium is used in the processes of zinc-cadmium batteries, cadmium yellow pigment, electroplating and the like. The application of heavy metal cadmium in large quantity leads part of cadmium to enter soil, and causes the pollution of the soil cadmium. Heavy metal in soil enters human body through respiration, contact, ingestion and other actions, so that the soil is very harmful to human body, can be accumulated in organs such as kidney, liver, bone and the like of human body, and even has carcinogenic risk. The activity of the heavy metal in the polluted soil is reduced, and the treatment of the heavy metal polluted soil has practical significance.
At present, technologies such as stabilization solidification, leaching and electric restoration are mainly used for treating the heavy metal contaminated soil, but the technologies cannot thoroughly solve the toxicity problem of heavy metal cadmium in the soil, such as the stabilization solidification technology, or are not suitable for large-scale engineering application only in a test research and development stage, such as the electric restoration technology, and the leaching technology is difficult to thoroughly remove the heavy metal contaminated soil in the soil to a restoration target value. Therefore, it is necessary to design an apparatus and method for effectively solving the toxicity of heavy metals in soil for a long time.
Ceramsite is a lightweight aggregate formed by high-temperature foaming in a rotary kiln, the traditional ceramsite manufacturing mainly takes shale and other raw materials as main materials, but the shale which is the main raw material for firing ceramsite is increasingly in short supply at present due to the protection of mine resources. At present, more cases about firing ceramsite by using sludge exist, and the invention patent application publication No. CN112121770A proposes a sludge ceramsite for treating heavy metal wastewater, which can be fired into porous ceramsite by using river sediment, fly ash, clay ammonium bicarbonate, water and the like as raw materials. There are also reports on firing ceramsite by using electroplating sludge, such as patent application publication No. CN111423212A which uses electroplating sludge to sinter ceramsite. In the process of manufacturing the ceramsite, the toxicity of heavy metals in the raw materials can be effectively reduced through high-temperature sintering.
Compared with sludge, the soil has more complex components, the particles of the soil are distributed unevenly from large to small, the soil is not suitable for directly manufacturing the ceramsite, and the ceramsite can be used as a raw material of the ceramsite only by certain treatment, so that the problem of pretreatment of the soil needs to be fully considered in equipment for manufacturing the ceramsite by utilizing the soil
This type of processing on the market pollutes soil equipment is various today, can satisfy people's user demand basically, but still has certain problem, and the current tertiary screening that pollutes soil equipment is not convenient for generally to soil is quick when using of this type, has reduced the recycle of soil.
Disclosure of Invention
The invention aims to provide an equipment system for treating soil polluted by heavy metal cadmium, which aims to solve the problem that the equipment for treating the polluted soil is inconvenient to rapidly screen the soil at three levels in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an equipment system for treating heavy metal contaminated soil comprises a soil pretreatment system A, a screening and leaching system B and a ceramsite manufacturing system C. The method is characterized in that: and a B-screening and leaching system is arranged outside the A-soil pretreatment system, and a C-ceramsite manufacturing system is arranged outside the B-screening and leaching system.
Preferably, B. screening drip washing system is equipped with first vibration screening machine, the external connection of first vibration screening machine has first agitator tank, second agitator tank, third vibration screening machine, first agitator tank and second agitator tank outside are equipped with second vibration screening machine, second vibration screening machine outside has fifth band conveyer, sixth band conveyer, seventh band conveyer, third vibration screening machine, seventh band conveyer outside has the third agitator tank, third agitator tank outside has fourth vibration screening machine, fourth vibration screening machine outside has ninth band conveyer, concentrated blending tank outside has fourth feed pipeline, fourth feed pipeline outside has the plate and frame filter press, plate and frame filter press outside has waste water pipeline, wastewater disposal basin and first promotion conveyer
Preferably, the C. ceramsite manufacturing system is provided with a crusher and a double-roller granulator, and a rotary kiln is arranged outside the double-roller granulator
Preferably, a first lifting machine is arranged outside the plate-and-frame filter press, a roller drying machine is arranged outside the first lifting machine, the roller drying machine belongs to the C. ceramsite manufacturing system, a second lifting conveyor is arranged outside the roller drying machine, and a crusher is arranged outside the second lifting conveyor
Preferably, the soil pretreatment system A is provided with an excavator-crushing screening hopper, a feeding bin is arranged outside the excavator-crushing screening hopper, and a first belt conveyor is arranged outside the feeding bin.
Preferably, a first vibrating screen machine is arranged outside the first belt conveyor, and belongs to the B
Preferably, B, the screening and leaching system comprises a first vibrating screening machine, a second vibrating screening machine, a third vibrating screening machine and a fourth vibrating screening machine, and is characterized in that: the first vibrating screening machine and the second vibrating screening machine are both two-stage vibrating screens, the screen surface apertures are respectively 30mm and 10mm, the third vibrating screening machine and the fourth vibrating screening machine are one-stage vibrating screens, and the screen diameter is 2mm
Preferably, the screening and leaching system comprises a first vibrating screening machine, the first vibrating screening machine is a two-stage vibrating screening machine, a first stirring tank is connected to the 30mm sieve surface of the first vibrating screening machine, a second stirring tank is connected to the 10mm sieve surface of the first vibrating screening machine, a fourth belt conveyor is connected to the bottom of the first vibrating screening machine, and a third vibrating screening machine is connected to the fourth belt conveyor.
Preferably, the screening and leaching system B is provided with a third vibrating screening machine, and a crusher and a third stirring tank are connected to the outside of the third vibrating screening machine.
Preferably, B. screening drip washing system has first agitator tank and second agitator tank, and first agitator tank external connection has first feed pipeline, and second agitator tank external connection has second feed pipeline, and first feed pipeline and second feed pipeline external connection have the second vibration screening machine, B. screening drip washing system has fourth vibration screening machine, and fourth vibration screening machine outside has eighth band conveyer, concentrated blending tank.
Compared with the prior art, the invention has the beneficial effects that: the equipment system for treating the polluted soil not only realizes the quick three-level screening of the heavy metal cadmium polluted soil to the soil with the particle size of more than or equal to 2mm, facilitates the derivation and cleaning of the soil with different particle sizes, utilizes the soil with the particle size of less than 2mm after screening and the soil with the particle size of less than 2mm after cleaning, improves the recycling rate of the polluted soil and solves the problem of leaving the polluted tail soil.
Description of the apparatus (description of the Process):
a pollutes soil pretreatment systems
1. And (4) crushing and screening the polluted soil by using a crushing and screening hopper. And (4) screening out the polluted soil with the particle size of more than 60mm, and washing the screened-out material with clear water to obtain clean soil.
2. And the polluted soil with the particle size of less than or equal to 60mm enters the opening of the feeding bin and is conveyed to the first vibrating screening machine through the first belt conveyor.
B screening and leaching system
(1) The first vibrating sieving machine has two layers of sieve net, 30mm and 10mm apertures, and one discharge port in the back of each sieve net to screen out soil with grain size of 30-60mm,10-30mm and less than 10 mm.
(2) The first vibrating screen machine is connected with the stirring tank through a feeding pipeline, soil of 30-60mm is screened out and then enters the first stirring tank through the first feeding pipeline, and the soil and the slurry after stirring and cleaning enter the second vibrating screen machine. And after the soil with the thickness of 10-30mm is sieved out, the soil enters a second stirring tank through a second feeding pipeline, and the soil and the slurry after stirring and cleaning enter a second vibrating screening machine.
(3) The second vibrating screen classifier is provided with two layers of screen meshes with the apertures of 30mm and 10mm respectively, and is externally connected with a belt conveyor. After vibration screening, the clean soil with the thickness of 30-60mm is output through a fifth belt conveyor, the clean soil with the thickness of 10-30mm is output through a sixth belt conveyor, and the soil with the thickness of less than 10mm and slurry (a product obtained after cleaning and stirring through a stirring tank) enter a third stirring tank to be stirred and cleaned.
(4) And the soil sieved by the first vibrating screening machine is less than 10mm and is conveyed to a third vibrating screening machine for screening by a fourth belt conveyor, and the third vibrating screening machine is provided with a layer of screen with the aperture of 2 mm. 2-10mm soil enters a third stirring tank. The soil with the thickness less than 2mm enters a crusher, and the crusher belongs to a C-ceramsite manufacturing system.
(5) And the third stirring tank is used for stirring and cleaning, the soil slurry after stirring and cleaning enters a fourth vibrating screening machine through a third feeding pipeline, the fourth vibrating screening machine is provided with a layer of screen, and the aperture is 2 mm. And (5) outputting the 2-10mm soil through an eighth belt conveyor to obtain clean soil. The soil slurry less than 2mm enters a concentration and uniform mixing tank.
(6) And (3) uniformly mixing and stirring the slurry in a concentration and uniform mixing tank, and feeding the slurry into a plate-and-frame filter press through a fourth feeding pipeline after uniformly mixing and stirring the slurry. The wastewater enters a wastewater pool through a wastewater pipeline for disposal. The sludge after filter pressing enters a drum-type dryer through a first lifting conveyor, and the drum-type dryer belongs to a C-ceramsite manufacturing system.
C haydite manufacturing system
(1) The crusher crushes the soil with the thickness less than 2mm, and the crushed soil enters the double-roller granulator through the first hoister.
(2) Granulating by a pair of roller granulator, and feeding the granules into a rotary kiln by a second hoister to fire ceramsite.
(3) And drying by a drum dryer, drying the sludge subjected to filter pressing, conveying the sludge to a crusher by a second lifting conveyor, crushing the sludge by the crusher, and granulating and firing the sludge into ceramsite by a pair-roller granulator and a rotary kiln.
In sum, through the pretreatment of the soil, the soil is sent into a leaching and screening system, and the soil with the size larger than or equal to 2mm is cleaned through multi-stage vibration screening and a stirring tank, so that the cleaning function of the polluted soil is realized. And (3) feeding the soil with the thickness of less than 2mm after the vibration screening into a ceramsite manufacturing system to fire the ceramsite, treating the soil slurry with the thickness of less than 2mm after the stirring and cleaning through a filter press, drying the filter-pressed sludge by using a drum dryer, and feeding the dried sludge into a ceramic making system to fire the ceramsite.
The equipment system has strong comprehensiveness, and can carry out integrated treatment on synchronously usable equipment, so that the whole system is more centralized, the occupied area of the equipment is saved, and the use efficiency of the equipment is effectively improved.
By using the device, the remediation of the heavy metal contaminated soil can be effectively improved, and the heavy metal pollutants in the soil with large particle size (more than or equal to 2mm) can be removed, so that the part of soil becomes clean soil. And firing the ceramsite by using the soil with the thickness less than 2mm and the filter-pressing sludge generated in the soil cleaning process so as to fully realize the reutilization of soil resources.
Drawings
FIG. 1 is a schematic top sectional view of the present invention;
FIG. 2 is a schematic front sectional view of the present invention;
FIG. 3 is a schematic structural view of a cross section of a pair roller pelletizer in front view;
FIG. 4 is a schematic front cross-sectional view of the belt conveyor of the present invention;
FIG. 5 is a schematic front cross-sectional view of a two-stage vibratory screening machine (first and second vibratory screening machines) of the present invention.
Fig. 6 is a schematic front sectional view of a tumble dryer according to the present invention.
In the figure:
A. soil pretreatment system
1 excavator-crushing screening hopper, 2 feeding bin, 3 first belt conveyor.
B. Screening and leaching system
4 first vibratory screening machine, 5 second band conveyer, 6 first agitator tanks, 7 third band conveyer, 8 second agitator tanks, 9 first feed pipeline, 10 second feed pipeline, 11 second vibratory screening machine, 12 fifth band conveyer, 13 sixth band conveyer, 14 seventh band conveyer, 15 third feed pipeline, 16 fourth vibratory screening machine, 17 eighth band conveyer, 18 ninth band conveyer, 19 concentrated blending tank, 20 fourth feed pipeline, 21 waste water pipeline, 22 wastewater disposal basin, 23 pressure filter plate frame, 24 first promotion conveyer, 32 tenth band conveyer, 33 third vibratory screening machine, 34 third agitator tanks, 35 fourth band conveyer.
C haydite manufacturing system
25-roller dryer, 26-second lifting conveyor, 27-rotary kiln, 28-second lifter, 29-pair-roller granulator, 30-first lifter and 31-crusher.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, an embodiment of the present invention is shown: the utility model provides a deal with equipment system of heavy metal contaminated soil, includes A. soil pretreatment systems, B. screening drip washing system, C. haydite manufacturing system, its characterized in that: A. the soil pretreatment system is provided with a B screening and leaching system outside the equipment, the B screening and leaching system is provided with a C ceramsite manufacturing system outside the equipment, the B screening and leaching system is provided with a first vibration screening machine 4, the first vibration screening machine 4 is connected with a first stirring tank 6, a second stirring tank 8 and a third vibration screening machine 33 outside the equipment, the second vibration screening machine 11 is arranged outside the first stirring tank 6 and the second stirring tank 8, a fifth belt conveyor 12, a sixth belt conveyor 13 and a seventh belt conveyor 14 are arranged outside the second vibration screening machine 11, a third vibration screening machine 33 and a seventh belt conveyor 14 are arranged outside the third vibration screening machine 34, a fourth vibration screening machine 16 is arranged outside the third vibration screening machine 34, a ninth belt conveyor 18 and a concentration mixing tank 19 are arranged outside the fourth vibration screening machine 16, a fourth mixing feeding pipe 20 is arranged outside the concentration mixing tank 19, a filter press 23 is arranged outside the fourth feeding pipe 20, the plate-and-frame filter press 23 is externally provided with a wastewater pipeline 21, a wastewater pond 22 and a first lifting conveyor 24, the C. ceramsite manufacturing system is provided with a crusher 31 and a double-roller granulator 29, the double-roller granulator 29 is externally provided with a rotary kiln 27, the plate-and-frame filter press 23 is externally provided with a first lifting machine 30, the first lifting machine 30 is externally provided with a roller dryer 25, the roller dryer 25 belongs to the C. ceramsite manufacturing system, the roller dryer 25 is externally provided with a second lifting conveyor 26, the second lifting conveyor is externally provided with the crusher 31, the A. soil pretreatment system is provided with an excavator-crushing screening hopper 1, the excavator-crushing screening hopper 1 is externally provided with a feeding bin 2, the feeding bin 2 is externally provided with a first belt conveyor 3, the first belt conveyor 3 is externally provided with a first vibration screening machine 4, the first vibration screening machine 4 belongs to the B. screening and leaching system, and the B. screening and leaching system is provided with a first vibration screening machine 4, Second vibration screening machine 11, third vibration screening machine 33, fourth vibration screening machine 16, its characterized in that: the first vibrating screening machine 4 and the second vibrating screening machine 11 are both two-stage vibrating screens, the screen surface aperture is respectively 30mm and 10mm, the third vibrating screening machine 33 and the fourth vibrating screening machine 16 are primary vibrating screens, the screen diameter is 2mm, the B. screening and leaching system comprises a first vibrating screening machine 4, the first vibrating screening machine 4 is a two-stage vibrating screen, the first vibrating screening machine 4 and the 30mm screen surface are externally connected with a first stirring tank 6, the first vibrating screening machine 4 and the 10mm screen surface are externally connected with a second stirring tank 8, the bottom of the first vibrating screening machine 4 is connected with a fourth belt conveyor 15, the fourth belt conveyor 15 is externally connected with a third vibrating screening machine 33, the B. screening and leaching system comprises a third vibrating screening machine 33, the third vibrating screening machine 33 is externally connected with a crusher 31 and a third stirring tank 34, the B. screening and leaching system comprises a first stirring tank 6 and a second stirring tank 8, first agitator tank 6 external connection has first feed pipeline 9, and 8 external connections of second agitator tank have second feed pipeline 10, and first feed pipeline 9 and the second feed pipeline 10 external connection have second vibration screening machine 11, B. screening drip washing system has fourth vibration screening machine 16, and fourth vibration screening machine 16 outside has eighth band conveyer 17, concentrated blending tank 19. The invention not only realizes the rapid grading and screening of the heavy metal contaminated soil by the equipment, facilitates the export and cleaning of the soil with different grain diameters, but also improves the recycling rate of the soil.
When the device is used, the polluted soil is crushed and screened by the excavator-crushing screening hopper 1 and then enters the A. polluted soil pretreatment system for treatment. And (4) screening out the polluted soil with the particle size of more than 60mm, and washing the screened-out material with clear water to obtain clean soil. Contaminated soil less than or equal to 60mm enters the feeding bin 2 and is conveyed to the first vibrating screen machine 4 through the first belt conveyor 3.
And (3) after the soil is treated, the soil enters a B-screening and leaching system, and after the soil is subjected to vibration screening by a first vibration screening machine 4, the particle size of the screened soil is 30-60mm,10-30mm and less than 10 mm. The first vibrating screen machine 4 is connected with the stirring tank through a feeding pipeline, soil of 30-60mm is screened out and then enters the first stirring tank 6 through the first feeding pipeline 9, and the soil and the slurry after stirring and cleaning enter the second vibrating screen machine 11. After being screened out, the soil with the thickness of 10-30mm enters a second stirring tank 8 through a second feeding pipeline 10, and the soil and the slurry after being stirred and cleaned enter a second vibrating screening machine 11. After the soil is subjected to vibration screening by the second vibration screening machine 11, 30-60mm clean soil is output by the fifth belt conveyor 12, 10-30mm clean soil is output by the sixth belt conveyor 13, and the soil and mud with the thickness less than 10mm are cleaned and stirred by the stirring tank, and then the product enters the third stirring tank 34 to be stirred and cleaned.
And the soil screened by the first vibrating screening machine 4 is less than 10mm, conveyed to a third vibrating screening machine 33 by a fourth belt conveyor 35 for screening, and the screened soil with the thickness of 2-10mm enters a third stirring tank 34. Soil with the thickness less than 2mm enters a crusher 31, and the crusher 31 belongs to a C-ceramsite manufacturing system.
The soil slurry stirred and cleaned by the third stirring tank 34 enters the fourth vibrating screening machine 16 through the third feeding pipeline 15, and after vibrating screening, the soil with the thickness of 2-10mm is output through the eighth belt conveyor 17 to be clean soil. The soil slurry with the thickness less than 2mm enters a concentration and uniform mixing tank 19. The slurry is mixed 19 uniformly by a concentration and mixing tank and then enters a plate-and-frame filter press 23 through a fourth feeding pipeline 20. The wastewater enters a wastewater basin 22 through a wastewater line 21 for disposal. The sludge after filter pressing enters a drum type dryer 25 through a first lifting conveyor 24, and the drum type dryer 25 belongs to a C-ceramsite manufacturing system.
And (3) treating the soil with the thickness of less than 2mm and the filter-pressed sludge, and then feeding the treated soil and the filter-pressed sludge into a C ceramsite manufacturing system. The filter-pressing sludge is dried by the drum dryer 25 and then conveyed to the crusher 31 by the second lifting conveyor 26. The soil and the filter-pressed sludge which are less than 2mm are crushed by a crusher 31. Enters the double roll granulator 29 via a first elevator 30. After being granulated by a pair-roller granulator 29, the mixture enters a rotary kiln 27 through a second hoister 28 to be sintered into ceramic particles.
The working principle is as follows: the polluted soil is crushed and sieved by an excavator-crushing and sieving hopper 1 and then enters an A. polluted soil pretreatment system for treatment, the polluted soil with the particle size larger than 60mm is sieved out, and the sieved material is washed by clear water to be clean soil. And (3) the polluted soil with the particle size less than or equal to 60mm enters the feeding bin 2, is conveyed to the first vibrating screening machine 4 through the first belt conveyor 3, enters the B-screening and leaching system after being treated, and is subjected to vibrating screening through the first vibrating screening machine 4, so that the particle size of the screened soil is 30-60mm,10-30mm and less than 10 mm. The first vibrating screen machine 4 is connected with the stirring tank through a feeding pipeline, soil of 30-60mm is screened out and then enters the first stirring tank 6 through the first feeding pipeline 9, and the soil and the slurry after stirring and cleaning enter the second vibrating screen machine 11. After being screened out, the soil with the thickness of 10-30mm enters a second stirring tank 8 through a second feeding pipeline 10, and the soil and the slurry after being stirred and cleaned enter a second vibrating screening machine 11. After the soil is subjected to vibration screening by the second vibration screening machine 11, 30-60mm clean soil is output by the fifth belt conveyor 12, 10-30mm clean soil is output by the sixth belt conveyor 13, the soil and mud smaller than 10mm are cleaned and stirred by the stirring tank, the product enters the third stirring tank 34 to be stirred and cleaned, the soil smaller than 10mm screened by the first vibration screening machine 4 is conveyed to the third vibration screening machine 33 by the fourth belt conveyor 35 to be screened, and the screened soil of 2-10mm enters the third stirring tank 34. Soil with the thickness less than 2mm enters a crusher 31, and the crusher 31 belongs to a C-ceramsite manufacturing system. The soil slurry stirred and cleaned by the third stirring tank 34 enters the fourth vibrating screening machine 16 through the third feeding pipeline 15, and after vibrating screening, the soil with the thickness of 2-10mm is output through the eighth belt conveyor 17 to be clean soil. The soil slurry with the thickness less than 2mm enters a concentration and uniform mixing tank 19. The slurry is mixed 19 uniformly by a concentration and mixing tank and then enters a plate-and-frame filter press 23 through a fourth feeding pipeline 20. The wastewater enters a wastewater basin 22 through a wastewater line 21 for disposal. The sludge after filter pressing enters a drum type dryer 25 through a first lifting conveyor 24, and the drum type dryer 25 belongs to a C-ceramsite manufacturing system. And (3) treating the soil with the thickness of less than 2mm and the filter-pressed sludge, and then feeding the treated soil and the filter-pressed sludge into a C ceramsite manufacturing system. The filter-pressing sludge is dried by the drum dryer 25 and then conveyed to the crusher 31 by the second lifting conveyor 26. The soil and the filter-pressed sludge which are less than 2mm are crushed by a crusher 31. Enters the double roll granulator 29 via a first elevator 30. After being granulated by a pair-roller granulator 29, the mixture enters a rotary kiln 27 through a second hoister 28 to be sintered into ceramic particles.
Claims (10)
1. The utility model provides a deal with equipment system of heavy metal contaminated soil, includes A. soil pretreatment systems, B. screening drip washing system, C. haydite manufacturing system, its characterized in that: and a B-screening and leaching system is arranged outside the A-soil pretreatment system, and a C-ceramsite manufacturing system is arranged outside the B-screening and leaching system.
2. The equipment system for disposing heavy metal contaminated soil according to claim 1, wherein: b, the screening and leaching system is provided with a first vibrating screening machine (4), the outside of the first vibrating screening machine (4) is connected with a first stirring tank (6), a second stirring tank (8) and a third vibrating screening machine (33), the outside of the first stirring tank (6) and the second stirring tank (8) is provided with a second vibrating screening machine (11), the outside of the second vibrating screening machine (11) is provided with a fifth belt conveyor (12), a sixth belt conveyor (13) and a seventh belt conveyor (14), the outside of the third vibrating screening machine (33) and the seventh belt conveyor (14) is provided with a third stirring tank (34), the outside of the third stirring tank (34) is provided with a fourth vibrating screening machine (16), the outside of the fourth vibrating screening machine (16) is provided with a ninth belt conveyor (18) and a concentration mixing tank (19), the outside of the concentration mixing tank (19) is provided with a fourth feeding pipeline (20), and a plate-and-frame filter press (23) is arranged outside the fourth feeding pipeline (20), and a waste water pipeline (21), a waste water pool (22) and a first lifting conveyor (24) are arranged outside the plate-and-frame filter press (23).
3. The equipment system for disposing heavy metal contaminated soil according to claim 1, wherein: the ceramsite manufacturing system is provided with a crusher (31) and a double-roller pelletizer (29), and a rotary kiln (27) is arranged outside the double-roller pelletizer (29).
4. The equipment system for disposing heavy metal contaminated soil according to claim 2, wherein: the ceramic particle production system is characterized in that a first lifting machine (30) is arranged outside the plate-and-frame filter press (23), a drum drying machine (25) is arranged outside the first lifting machine (30), the drum drying machine (25) belongs to the C. ceramic particle production system, a second lifting conveyor (26) is arranged outside the drum drying machine (25), and a crusher (31) is arranged outside the second lifting conveyor.
5. The equipment system for disposing heavy metal contaminated soil according to claim 1, wherein: a, the soil pretreatment system is provided with an excavator-crushing screening hopper (1), a feeding bin (2) is arranged outside the excavator-crushing screening hopper (1), and a first belt conveyor (3) is arranged outside the feeding bin (2).
6. The equipment system for disposing heavy metal contaminated soil according to claim 5, wherein: and a first vibrating screening machine (4) is arranged outside the first belt conveyor (3), and the first vibrating screening machine (4) belongs to a B.
7. The equipment system for disposing heavy metal contaminated soil according to claim 1, wherein: B. screening drip washing system has first vibration screening machine (4), second vibration screening machine (11), third vibration screening machine (33), fourth vibration screening machine (16), its characterized in that: first vibration screening machine (4) and second vibration screening machine (11) are the second grade shale shaker, and sifter surface aperture is 30mm, 10mm respectively, and third vibration screening machine (33) and fourth vibration screening machine (16) are the one-level shale shaker, and the screen diameter is 2 mm.
8. The equipment system for disposing heavy metal contaminated soil according to claim 1, wherein: b, the screening and leaching system is provided with a first vibrating screening machine (4), the first vibrating screening machine (4) is a two-stage vibrating screening machine, a first stirring tank (6) is connected to the 30mm sieve surface of the first vibrating screening machine (4), a second stirring tank (8) is connected to the 10mm sieve surface of the first vibrating screening machine (4), a fourth belt conveyor (15) is connected to the bottom of the first vibrating screening machine (4), and a third vibrating screening machine (33) is connected to the fourth belt conveyor (15).
9. The equipment system for disposing heavy metal contaminated soil according to claim 1, wherein: and B, the screening and leaching system is provided with a third vibrating screening machine (33), and a crusher (31) and a third stirring tank (34) are connected to the outside of the third vibrating screening machine (33).
10. The equipment system for disposing heavy metal contaminated soil according to claim 1, wherein: b, screening drip washing system has first agitator tank (6) and second agitator tank (8), and first agitator tank (6) external connection has first feed pipeline (9), and second agitator tank (8) external connection has second feed pipeline (10), and first feed pipeline (9) and second feed pipeline (10) external connection have second vibration screening machine (11), B, screening drip washing system has fourth vibration screening machine (16), and fourth vibration screening machine (16) outside has eighth band conveyer (17), concentrated blending tank (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551259.1A CN114160561A (en) | 2021-12-17 | 2021-12-17 | Equipment system for treating heavy metal contaminated soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870324A (en) * | 2023-01-06 | 2023-03-31 | 河北科技大学 | Continuous repairing device for organic contaminated soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115870324A (en) * | 2023-01-06 | 2023-03-31 | 河北科技大学 | Continuous repairing device for organic contaminated soil |
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