CN215844846U - Organic matter and heavy metal combined pollution soil integration processing apparatus - Google Patents

Abstract

The utility model discloses an integrated treatment device for organic matter and heavy metal combined polluted soil, and aims to realize effective treatment of organic matter and heavy metal in the polluted soil at the same time. Therefore, the integrated treatment device for the organic matter and heavy metal combined contaminated soil, provided by the embodiment of the utility model, comprises a crusher, a conveying belt and a stirring and repairing tank which are arranged in a closed cavity and are sequentially connected; a heating element for heating and desorbing the soil conveyed on the conveying belt is arranged on the conveying belt, and a dosing device is further arranged above the stirring and repairing groove in the closed cavity; be equipped with air exit and feed inlet on the airtight chamber, the air exit passes through exhaust pipe and exhaust fan and activated carbon tank intercommunication, the feed inlet with the butt joint of the material import of breaker.

Description

Organic matter and heavy metal combined pollution soil integration processing apparatus

Technical Field

The utility model belongs to the technical field of polluted soil treatment, and particularly relates to an integrated treatment device for organic matter and heavy metal combined polluted soil.

Background

Soil is an important component of ecological environment, is one of the most important environmental factors, and is the foundation of agricultural production and urban construction. With the rapid development of industrial and agricultural production and the continuous acceleration of urbanization process, heavy metal and organic pollutants are increasingly accumulated in soil, complex interaction among the pollutants is caused, and composite pollution is formed. At present, organic-inorganic composite pollution is one of the basic characteristics of soil pollution in China.

Existing soil pollution can be roughly divided into two categories, inorganic pollutants and organic pollutants. Inorganic pollutants include the pollution of substances such as acid, alkali, heavy metal and the like; the organic pollutants mainly comprise organic pesticides, phenols, polycyclic aromatic hydrocarbons and other substances. Among soil pollutants, heavy metal pollution and polycyclic aromatic hydrocarbon pollution are two typical pollutants, so how to degrade organic pollutants and passivate heavy metals becomes a main subject of polluted soil remediation.

Among all the exhibited types of combined pollution, combined pollution of heavy metals and organic matters in soil is a common one of the types of combined pollution. The heavy metal-organic pollutant combined pollution in soil is mainly caused by the combination of organic matters and heavy metals of pesticides, the irrigation of wastewater containing high pollutants such as phenol, benzene and cyanide, the use of pesticides containing heavy metals, the settlement of atmospheric pollutants and the like.

At present, the main heavy metal contaminated soil treatment technology is solidification/stabilization, and the main organic contaminated soil treatment technology is thermal desorption and chemical oxidation. At present, heavy metals and organic matters are generally treated by corresponding treatment equipment aiming at organic matter-heavy metal combined polluted soil, and the organic matter-heavy metal combined polluted soil cannot be effectively treated by comprehensive treatment equipment without the need of the polluted soil.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an integrated treatment device for organic matter and heavy metal combined contaminated soil, and aims to realize effective treatment of organic matter and heavy metal in the contaminated soil.

Therefore, the integrated treatment device for the organic matter and heavy metal combined contaminated soil, provided by the embodiment of the utility model, comprises a crusher, a conveying belt and a stirring and repairing tank which are arranged in a closed cavity and are sequentially connected;

a heating element for heating and desorbing the soil conveyed on the conveying belt is arranged on the conveying belt, and a dosing device is further arranged above the stirring and repairing groove in the closed cavity;

be equipped with air exit and feed inlet on the airtight chamber, the air exit passes through exhaust pipe and first exhaust fan and activated carbon tank intercommunication, the feed inlet with the butt joint of the material import of breaker.

Specifically, a constant feeder is arranged between the conveying belt and the stirring and repairing groove.

Specifically, still be equipped with the agitator between transmission band and the constant feeder.

Specifically, a second exhaust fan is arranged on the cooling maintenance cavity and communicated with the activated carbon tank

The device comprises a processing box, wherein the processing box is separated into a sealed cavity and a cooling maintenance cavity through a heat insulation partition plate, a grab bucket is arranged on the cooling maintenance cavity, and a material outlet of a stirring and repairing groove is in butt joint with a material inlet of the cooling maintenance cavity.

Specifically, still be equipped with the vibration screening machine between breaker and the transmission band, the fine material export of vibration screening machine with the feed end butt joint of transmission band, coarse material export with the butt joint of coarse material collector in the airtight intracavity.

Specifically, a coarse material outlet gate which can be opened and closed is arranged on the closed cavity.

Specifically, the conveying belt comprises an upper conveying belt and a lower conveying belt which are connected in sequence, the upper conveying belt is in butt joint with the vibrating screening machine, and the lower conveying belt is connected with the stirring repair groove.

Specifically, a first baffle and a second baffle are obliquely arranged in the closed cavity; wherein the content of the first and second substances,

the first baffle is arranged between the feeding hole and the crusher and used for guiding materials to a material inlet of the crusher;

the second baffle is arranged between the vibrating screen classifier and the coarse material collector and used for guiding materials to a material inlet of the coarse material collector.

Specifically, the heating elements are arranged on the upper conveying belt and the lower conveying belt, and the heating temperature of the heating elements on the lower conveying belt is higher than that of the heating elements on the upper conveying belt.

In particular, the crusher comprises two intermeshing crushing wheels.

Specifically, a stable material outlet gate is arranged on the cooling maintenance cavity.

Compared with the prior art, at least one embodiment of the utility model has the following beneficial effects: utilize the heating element on the transmission band can heat the organic matter in the contaminated soil and volatilize the processing, add the restoration medicament in repairing the groove to the stirring through the medicine equipment, can realize polluting the improvement of heavy metal in the soil, whole device is simple structure not only, and the organic matter volatile gas that the heating produced and the organic volatile gas that follow-up waste heat produced all are effectively adsorbed by activated carbon tank, can not produce secondary pollution in addition.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an integrated processing apparatus according to an embodiment of the present invention;

wherein: 1. a closed cavity; 2. a crusher; 3. a conveyor belt; 301. uploading a conveyor belt; 302. a lower conveyor belt; 4. stirring the repairing tank; 5. a heating element; 6. dosing equipment; 601. a chemical agent feeder; 602. a curing agent feeder; 603. a liquid stabilizer feeder; 7. an air outlet; 8. a feed inlet; 9. a first exhaust fan; 10. an activated carbon canister; 11. a constant feeder; 12. a stirrer; 13. a treatment tank; 14. a heat-insulating partition plate; 15. cooling the curing cavity; 16. a grab bucket; 17. a stabilized material outlet gate; 18. a second exhaust fan; 19. a vibrating screen classifier; 20. a coarse material collector; 21. a coarse material outlet gate; 22. a first baffle plate; 23. a second baffle.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, an organic matter and heavy metal combined pollution soil integration processing apparatus, including setting up breaker 2 in airtight chamber 1 and connecting in order, transmission band 3 and stirring restoration groove 4, be equipped with on the transmission band 3 and carry out the heating element 5 that heats the desorption to the soil of transmission above that, the top that lies in stirring restoration groove 4 in airtight chamber 1 still is equipped with medicine equipment 6, be equipped with air exit 7 and feed inlet 8 on airtight chamber 1, air exit 7 passes through the exhaust pipe and communicates with first exhaust fan 9 and activated carbon tank 10, feed inlet 8 docks with the material import of breaker 2.

The process of utilizing the device to treat the polluted soil is as follows: contaminated soil drops into behind sealed chamber 1 from feed inlet 8, later get into and carry out broken handle in the breaker 2, contaminated soil after the broken handle passes through transmission band 3 and carries to stirring restoration groove 4 in, add the restoration medicament to stirring restoration groove 4 through medicine adding equipment 6, realize the improvement of heavy metal in the contaminated soil, and contaminated soil is at the in-process of carrying through transmission band 3, the organic matter that sets up in contaminated soil is heated to heating element 5 on transmission band 3 and is volatilized the processing (heating desorption), thereby realize the comprehensive improvement of organic matter and heavy metal in the contaminated soil, whole device is simple structure not only, and the organic volatile gas that the heating produced and the organic volatile gas that follow-up waste heat produced all are effectively adsorbed by activated carbon tank 10, can not produce secondary pollution.

Referring to fig. 1, in some embodiments, a quantitative feeder 11 is disposed between the conveyor belt 3 and the stirring and repairing tank 4, and the dosing device 6 includes a chemical feeder 601, a solidified chemical feeder 602, and a liquid stabilizer feeder 603, so that the design has an advantage that the contaminated soil after thermal desorption treatment enters a dosing stage, and the contaminated soil can be accurately and effectively treated by controlling the quantitative feeder 11 and timely adjusting the mixing ratio of the chemical oxidizing agent, the curing agent, and the liquid stabilizer in the agent, thereby ensuring the maintenance effect and optimizing the treatment effect; meanwhile, the dosage of the medicament can be effectively controlled, and the medicament cost is reduced.

It can be understood that, can also set up agitator 12 between transmission band 3 and constant feeder 11, the contaminated soil after thermal desorption handles gets into agitator 12, and contaminated soil not only can further be broken under the effect of stirring leaf in agitator 12, improves the effect of follow-up medicine processing, can utilize the waste heat to carry out abundant thermal desorption with the organic matter that pollutes soil moreover.

Referring to fig. 1, in other embodiments, the apparatus further includes a processing box 13, the processing box 13 is divided into a left closed cavity 1 and a right cooling maintenance cavity 15 by a thermal insulation partition plate 14, a grab bucket 16 is disposed at the top of the cooling maintenance cavity 15, the grab bucket 16 can move freely at the top of the cooling maintenance cavity 15, so as to facilitate the grabbing of materials, a material outlet of the stirring and repairing tank 4 is in butt joint with a material inlet of the cooling maintenance cavity 15, the treated soil enters the cooling maintenance cavity 15 for maintenance treatment, and the grab bucket 16 of the cooling maintenance vehicle cavity can transfer the fine soil after maintenance, and finally the fine soil is discharged through a stabilizing material outlet gate 17 on the cooling maintenance cavity 15. The device can effectively reduce heat loss and improve the utilization rate of electric heat conversion by arranging the heat-insulating partition plate 14.

Referring to fig. 1, specifically, a second exhaust fan 18 is arranged on the cooling maintenance cavity 15, the organic volatile gas generated in the treatment tank 13 is guided by the first exhaust fan 9 and the second exhaust fan 18, enters the activated carbon canister 10 for adsorption, and is exhausted through an exhaust port at the top of the activated carbon canister 10 after adsorption is finished, and the stirring repair tank 4 comprises a tank body and spiral stirring propelling blades arranged in the tank body.

Referring to fig. 1, in other embodiments, a vibrating screen machine 19 is further arranged between the crusher 2 and the conveying belt 3, a fine material outlet of the vibrating screen machine 19 is in butt joint with a feeding end of the conveying belt 3, a coarse material outlet is in butt joint with a coarse material collector 20 in the closed cavity 1, and a coarse material outlet gate 21 capable of being opened and closed is arranged on the closed cavity 1.

In this embodiment, contaminated soil is poured into from feed inlet 8, contaminated soil falls on breaker 2, breaker 2 comprises two intermeshing's crushing wheel, the soil that falls into two crushing wheel junctions is smashed by breaker 2, kibbling thin material falls on the shale shaker of vibratory screening machine 19, the coarse fodder that the shale shaker surface can not sift out is discharged from the coarse fodder export of screening body lateral wall, and collect by the coarse fodder collector 20 of bottom, avoid the processing procedure to produce the raise dust, coarse fodder collector 20 accessible coarse fodder export gate 21 transports the coarse fodder outward.

Referring to fig. 1, it can be understood that the conveyor belt 3 comprises an upper conveyor belt 301 and a lower conveyor belt 302 which are connected in sequence, the feed end of the upper conveyor belt 301 is located right below the fine material outlet of the vibrating screen, heating elements 5 are arranged in the upper conveyor belt 301 and the lower conveyor belt 302, the lower conveyor belt 302 is arranged right below the discharge end of the upper conveyor belt 301, the discharge end of the lower conveyor belt 302 is connected with a stirrer 12, and a quantitative feeder is arranged right below the stirrer 12 and connected with the material inlet of the stirring repair tank 4. Wherein, the material of upper conveyor 301 and lower conveyor 302 is resistance steel system net, and unconventional conveyer belt material, upper conveyor 301 level set up, and lower conveyor 302 slope sets up downwards, and the discharge end is located the below. In addition, to further reduce the installation space of the conveyor belt 3, the lower conveyor belt 302 is positioned directly below the upper conveyor belt 301.

In particular, the heating temperature of the heating elements 5 on the lower conveyor belt 302 is higher than that of the heating elements 5 on the upper conveyor belt 3, so that the design is favorable for fully volatilizing the organic matters in the polluted soil. The heating element 5 may be a resistance heater.

Referring to fig. 1, in order to ensure that contaminated soil accurately falls into the crusher 2 from the feeding port 8, a first baffle 22 is obliquely arranged in the closed cavity 1, the first baffle 22 is positioned under the feeding port 8, the high-position end of the first baffle 22 is supported on the inner wall of the closed cavity 1, the low-position end of the first baffle 22 is attached to the upper side of a vibrating screen of the crusher 2, in order to ensure that screened coarse materials accurately fall into the coarse material collector 20, a second baffle 23 is obliquely arranged in the closed cavity 1, the second baffle 23 is positioned at the outer side of a coarse material outlet of the vibrating screen, the high-position end of the second baffle 23 is supported on the inner wall of the closed cavity 1, and the low-position end of the second baffle 23 is attached to the upper side of the coarse material collector 20.

Referring to fig. 1, the working process of the processing apparatus with the above structure is as follows: after the polluted soil is crushed and screened, the polluted soil enters a thermal desorption stage of a conveyor belt, organic matters in the polluted soil are heated and volatilized, and volatile organic gas generated by heating and volatile organic gas generated by subsequent waste heat are effectively adsorbed by the activated carbon tank 10, so that environmental damage and secondary pollution are reduced; in addition, the cooling maintenance cavity 15 and the sealed cavity 1 are separated by the heat insulation partition plate 14, so that the heat loss in a thermal desorption stage can be effectively reduced, the energy-saving effect is achieved, and the maintenance time of the soil treated in the cooling maintenance room is shortened. In addition, contaminated soil after thermal desorption treatment enters a dosing stage, the contaminated soil can be accurately and effectively treated through the control of the quantitative feeder 11 and the timely adjustment of the mixing ratio of the chemical oxidation medicament, the curing agent and the liquid stabilizer in the medicament, the maintenance effect is ensured, the treatment effect is optimal, meanwhile, the use amount of the medicament can also be effectively controlled, the medicament cost is reduced, and the movable grab bucket 16 is arranged in a cooling maintenance room, so that the mechanical utilization rate can be effectively improved, and the labor consumption is reduced.

Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.

Meanwhile, if the utility model as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated. Any part provided by the utility model can be assembled by a plurality of independent components or can be manufactured by an integral forming process.

Claims (10)

1. The utility model provides an organic matter and heavy metal combined pollution soil integration processing apparatus which characterized in that: comprises a crusher (2), a conveyor belt (3) and a stirring repair tank (4) which are arranged in a closed cavity (1) and are connected in sequence;

a heating element (5) for heating and desorbing soil conveyed on the conveying belt (3) is arranged on the conveying belt, and a dosing device (6) is further arranged above the stirring and repairing groove (4) in the closed cavity (1);

be equipped with air exit (7) and feed inlet (8) on airtight chamber (1), air exit (7) are through exhaust pipe and first exhaust fan (9) and activated carbon tank (10) intercommunication, feed inlet (8) with the material import of breaker (2) docks.

2. The integrated treatment device for the organic matter and heavy metal combined contaminated soil according to claim 1, characterized in that: a constant feeder (11) is arranged between the transmission belt (3) and the stirring and repairing tank (4).

3. The integrated treatment device for the organic matter and heavy metal combined contaminated soil according to claim 2, characterized in that: a stirrer (12) is also arranged between the transmission belt (3) and the constant feeder (11).

4. The integrated treatment device for organic matter and heavy metal combined contaminated soil according to any one of claims 1 to 3, characterized in that: still including handling case (13), it separates for through heat preservation baffle (14) to handle case (13) airtight chamber (1) and cooling maintenance chamber (15), be equipped with grab bucket (16) on cooling maintenance chamber (15), the material export of stirring restoration groove (4) with the material import of cooling maintenance chamber (15) docks.

5. The integrated treatment device for organic matter and heavy metal combined contaminated soil according to claim 4, characterized in that: and a second exhaust fan (18) is arranged on the cooling maintenance cavity (15), and the second exhaust fan (18) is communicated with the activated carbon tank (10).

6. The integrated treatment device for organic matter and heavy metal combined contaminated soil according to claim 4, characterized in that: still be equipped with vibration screening machine (19) between breaker (2) and transmission band (3), the fine material export of vibration screening machine (19) with the feed end butt joint of transmission band (3), coarse material export with coarse material collector (20) butt joint in the sealed chamber (1).

7. The integrated treatment device for organic matter and heavy metal combined contaminated soil according to claim 6, characterized in that: the conveying belt (3) comprises an upper conveying belt (301) and a lower conveying belt (302) which are connected in sequence, the upper conveying belt (301) is in butt joint with the vibration screening machine (19), and the lower conveying belt (302) is connected with the stirring and repairing groove (4).

8. The integrated treatment device for organic matter and heavy metal combined contaminated soil according to claim 7, characterized in that: the heating elements (5) are arranged on the upper conveying belt (301) and the lower conveying belt (302), and the heating temperature of the heating elements (5) on the lower conveying belt (302) is higher than that of the heating elements (5) on the upper conveying belt (3).

9. The integrated treatment device for organic matter and heavy metal combined contaminated soil according to claim 6, characterized in that: a first baffle (22) and a second baffle (23) are obliquely arranged in the closed cavity (1); wherein the content of the first and second substances,

the first baffle (22) is arranged between the feed inlet (8) and the crusher (2) and is used for guiding materials to a material inlet of the crusher (2);

the second baffle (23) is arranged between the vibratory screening machine (19) and the coarse material collector (20) and is used for guiding materials to a material inlet of the coarse material collector (20).

10. The integrated treatment device for organic matter and heavy metal combined contaminated soil according to claim 4, characterized in that: and a stable material outlet gate (17) is arranged on the cooling maintenance cavity (15).

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