CN111448858A - Soil heavy metal treatment device and treatment method - Google Patents

Soil heavy metal treatment device and treatment method Download PDF

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Publication number
CN111448858A
CN111448858A CN202010273496.5A CN202010273496A CN111448858A CN 111448858 A CN111448858 A CN 111448858A CN 202010273496 A CN202010273496 A CN 202010273496A CN 111448858 A CN111448858 A CN 111448858A
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soil
heavy metal
conveying
plows
mixing
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尤宝旺
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B49/00—Combined machines
    • A01B49/02—Combined machines with two or more soil-working tools of different kind
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B77/00—Machines for lifting and treating soil
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00—Methods for working 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
    • B09C1/08—Reclamation of contaminated soil chemically
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00—Soil-conditioning materials or soil-stabilising materials
    • C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2101/00—Agricultural use

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Soil Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a soil heavy metal treatment device and a treatment method, comprising the following steps: a vehicle body; at least two earth-moving delivery plows; at least two spiral delivery cylinders; a mixing box; a first feed port and a second feed port; a plurality of discharge ports; a distributing device; a material storage box; at least two turning plows; a liquid storage tank. The soil heavy metal treatment device can spray heavy metal treatment liquid into the deeper position of heavy metal soil according to the volume while ploughing, and cover the soil layer with heavy metal treatment composition for the soil top layer after ploughing, and then carry out the degree of depth of layering to the heavy metal contaminated soil and administer, in order to effectively improve the treatment effect. The soil heavy metal treatment method provided by the invention provides a proper heavy metal treatment liquid and a heavy metal treatment composition on the basis of the soil heavy metal treatment device, so that the soil treatment effect is further improved.

Description

Soil heavy metal treatment device and treatment method
Technical Field
The invention relates to the technical field of polluted soil treatment, in particular to a soil heavy metal treatment device and a treatment method.
Background
The heavy metal pollution of the soil is the phenomenon that the heavy metal in the soil is obviously higher than the primary content and causes the quality deterioration of the ecological environment because the metal is added into the soil by the activity of human beings, mainly mercury, arsenic, lead, chromium, cadmium and the like, and the heavy metal pollutes the soil, so that the heavy metal in the soil is obviously higher than the primary content and causes the quality deterioration of the ecological environment, the heavy metal pollution of the soil not only causes the productivity reduction of the soil and the yield reduction of grains, but also can accumulate in plants and animals and enter a food chain, or enter the respiratory tract of a human body through polluted air, and have strong interaction with protein, enzyme and the like after entering the human body, so that the heavy metal pollution of the.
The existing soil treatment method is mainly characterized in that a soil treatment agent and polluted soil are mixed and then directly paved on a land to be treated, or a liquid treatment agent is directly sprayed or poured on the ground surface of the land to be treated; in the method, the treatment effect is reduced because the treatment agent is not uniformly distributed and the treatment depth is shallow.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
Still another object of the present invention is to provide a soil heavy metal treatment device, which can spray heavy metal treatment liquid into a deeper position of heavy metal soil according to a certain amount while plowing, and cover a soil layer with a heavy metal treatment composition on the surface layer of plowed soil, thereby performing layered deep treatment on the heavy metal contaminated soil to effectively improve the treatment effect.
The invention also aims to provide a method for treating the heavy metal in the soil, which provides a proper heavy metal treatment liquid and a heavy metal treatment composition on the basis of a soil heavy metal treatment device to further improve the soil treatment effect.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a soil heavy metal remediation device including:
a vehicle body;
the two soil-excavating conveying plows are arranged below the vehicle body side by side at intervals, the two soil-excavating conveying plows are arc-shaped metal sheets with sharp ends, and the tail ends of the arc-shaped metal sheets are wound into a cylinder shape so as to form a conveying channel in the axial direction of the soil-excavating conveying plows;
one end of each of the at least two spiral conveying cylinders is connected to the tail end of the arc-shaped metal sheet body, and the other end of each spiral conveying cylinder extends to the obliquely upper part of the vehicle body;
the mixing box, it sets up on the automobile body, the mixing box still includes: the stirrer is arranged at the bottom of the mixing box; the first feeding hole is formed in the side wall of the mixing box, and the lower edge of the first feeding hole is higher than the upper end of the stirrer in the vertical direction; the second feed inlet is arranged at the upper end of the mixing box; the other ends of the at least two spiral conveying cylinders are communicated to the first feed inlet; the discharge ports are arranged on the side wall of the mixing box side by side and are arranged towards the rear of the vehicle body; the distributing device is arranged at the rear end of the vehicle body, and an inner cavity of the distributing device is communicated with the first discharge ports through obliquely arranged conveying channels;
the storage box is arranged on the vehicle body, a second discharge hole is formed in the bottom of the storage box, and the first discharge hole is communicated with the second feed hole through a conveying pipeline;
the at least two soil turning plows are arranged below the vehicle body in parallel at intervals, the at least two soil turning plows and the at least two soil digging and conveying plows are alternately arranged one by one at intervals in the axial direction of the vehicle body, and the at least two soil turning plows are positioned behind the at least two soil digging and conveying plows in the advancing direction of the vehicle body; in the advancing process of the vehicle body, the plowing depth of the at least two soil turning plows is smaller than the digging depth of the at least two soil digging and conveying plows;
the liquid storage tank is arranged on the vehicle body; at least two liquid guide pipes, one end of each liquid guide pipe is communicated to the bottom of the liquid storage tank, and the other end of each liquid guide pipe extends downwards and is respectively arranged behind the at least two soil digging and conveying plows; and the at least two nozzles are respectively arranged at the other ends of the at least two liquid guide pipes, and in the advancing direction of the vehicle body, the at least two nozzles are positioned in front of the at least two turning plows.
Preferably, the bottom of mixing box sets up towards the advancing direction slope of automobile body, just the bottom of mixing box and the axial of automobile body are less than 15 degrees contained angles.
Preferably, the mixing box further comprises a mixing and stirring part and a mixing and conveying part which are communicated with each other, the mixing and stirring part is a vertically arranged cylindrical barrel I, the stirrer is vertically arranged in the mixing and stirring part, the mixing and conveying part is a horizontally arranged semi-cylindrical barrel II, and a rotary conveying roller is arranged in the axial direction of the mixing and conveying part; a plurality of rows of metal bristles which are coaxially and uniformly distributed on the rotating conveying roller, wherein the rotating direction of the rotating conveying roller is from the mixing and stirring part to the mixing and conveying part; the relationship between the height h of the mixing and stirring part and the cross section diameter r of the mixing and conveying part is that h is more than or equal to 2 r.
Preferably, the plowing depth H of at least two plows during the traveling of the vehicle body1The depth H of excavation with at least two excavation transporting plows2Has a relationship of H1≤2/3H2。
Preferably, the bottom of storage case is for leaking hopper-shaped, and is close to the bottom of storage case is provided with the reciprocating sieve.
Preferably, the length of any one of the spiral delivery cylinders is less than 3 meters.
A soil heavy metal treatment method comprises the following steps:
step one, deeply ploughing a land to be processed, wherein the ploughing depth is 0.4-0.55 m;
step two, deeply digging strip-shaped ditches at certain intervals by adopting at least two soil digging and conveying plows of the soil heavy metal treatment device, spraying a certain amount of heavy metal treatment liquid through at least two nozzles, and mixing the soil dug in the strip-shaped ditches and the heavy metal treatment composition according to the mass ratio of 5:1-5:2 to obtain a mixture for later use;
step three, shallowly turning the ground between the strip-shaped ditches by using at least two soil turning plows of the soil heavy metal treatment device, burying the strip-shaped ditches and leveling the ground;
and step four, spreading the mixture on the leveled ground by adopting a distributor.
Preferably, in the second step, the distance between two adjacent grooves is 0.8-1.2m, the width of any groove is 0.1-0.4m, and the depth of any groove is 0.45-0.55 m.
Preferably, the shallow depth of the turn is less than 0.3 m.
Preferably, the preparation method of the heavy metal treatment liquid comprises the following steps:
mixing and fermenting 10 parts of forest land soil without heavy metal pollution, 5 parts of kitchen garbage, 2 parts of sugar residues and 1 part of crop straws to obtain a fermentation product, then leaching the fermentation product with 10 parts of water while stirring to obtain leacheate and residues, repeatedly leaching for 2-3 times, then combining the leacheate, and then diluting the leacheate by 500 times and 1000 times to obtain a heavy metal treatment solution;
the preparation method of the heavy metal treatment liquid comprises the following steps:
according to the weight portion, 5 portions of residue, 2 portions of quicklime, 1 portion of 2, 3-diphosphoglycerate and 2 portions of diatomite are uniformly mixed and compressed into particles with the particle size of less than 2mm, and then the particles, 3 portions of activated carbon and 1 portion of fly ash are uniformly mixed to prepare the heavy metal treatment composition.
The invention at least comprises the following beneficial effects:
the automobile body is used for bearing other subassemblies and realizes walking soil improvement, realizes that the normal position is administered and is polluted soil: the two sides of the vehicle body are provided with wheel bodies, the vehicle body can be driven by a tractor to advance at a certain speed according to actual needs, at least two soil excavating and conveying plows are arranged below the vehicle body side by side at intervals, the at least two soil excavating and conveying plows are arc-shaped metal sheet bodies with tip ends, the tip ends of the two soil excavating and conveying plows face the advancing direction of the vehicle body, and the tail ends of the arc-shaped metal sheet bodies are wound into a cylindrical shape so as to form a conveying channel in the axial direction of the soil excavating and conveying plows; the method comprises the following steps of (1) digging soil with a certain depth, conveying the soil to a mixing box through at least two spiral conveying cylinders, crushing the dug soil in the mixing box, and fully mixing the crushed soil with a heavy metal treatment composition; finally, discharging the mixture to a distributing device through a plurality of first discharge ports, uniformly paving the mixed soil and heavy metal treatment composition on the ploughed soil through the distributing device, and communicating an inner cavity of the distributing device with the plurality of first discharge ports through obliquely arranged conveying channels; the connecting passage between the mixing box and the distributing device is reduced, so that the soil which just enters the mixing box is prevented from directly entering the distributing device to a certain extent, and the mixing effect is improved; in addition, the liquid storage tank is used for storing heavy metal treatment liquid, when at least two soil digging and conveying plows dig soil with a certain depth to form a strip-shaped ditch at the rear part of the soil digging and conveying plows, at least two liquid guide pipes and at least two nozzles are matched with each other, the heavy metal treatment liquid is sprayed into the strip-shaped ditch according to the amount, and then the soil around the strip-shaped ditch is ploughed through the soil of at least two soil ploughing plows and the strip-shaped ditch is buried. In practical application, at least two digging and conveying plows and at least two turning plows can be lifted through a hydraulic telescopic rod or an electric telescopic rod so as to adjust the height of the digging and conveying plows relative to a vehicle body and avoid influencing the traveling of the vehicle body.
To sum up, the soil heavy metal treatment device can spray heavy metal treatment liquid into the deeper position of heavy metal soil according to the volume while ploughing to cover the soil layer that has heavy metal treatment composition for the soil top layer after ploughing, and then carry out the degree of depth of layering and administer to heavy metal contaminated soil, in order to effectively improve treatment effect.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic perspective view of a soil heavy metal remediation device according to one embodiment of the present invention;
FIG. 2 is a schematic illustration of the distribution of at least two earth moving plows, at least two earth turning plows and at least two nozzles relative to the vehicle body in accordance with one embodiment of the present invention;
the cross section structure schematic diagram of any base and the upright column on the base;
FIG. 3 is a schematic perspective view of a heavy metal remediation device according to yet another embodiment of the present invention;
FIG. 4 is a schematic perspective view of a heavy metal remediation device according to yet another embodiment of the present invention;
fig. 5 is a perspective view of a heavy metal treatment device according to another embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
As shown in fig. 1 to 2, the present invention provides a soil heavy metal treatment device, including:
a vehicle body 10; at least two soil transporting plows 20 which are arranged below the vehicle body side by side at intervals, wherein the two soil transporting plows are arc-shaped metal sheets with sharp ends, and the tail ends of the arc-shaped metal sheets are wound into a cylinder shape to form a transporting channel in the axial direction of the soil transporting plows; the rotating shaft 201 drives at least two soil digging and conveying plows to integrally rotate upwards or downwards so as to adjust the relative height between the tips of the soil digging and conveying plows and the ground; at least two spiral conveying cylinders 30, one ends of which are connected to the tail ends of the arc-shaped metal sheets, and the other ends of which extend obliquely upwards to the vehicle body; a mixing box 40 provided on the vehicle body, the mixing box further comprising: a stirrer 401 provided at the bottom of the mixing tank; the first feeding hole is formed in the side wall of the mixing box, and the lower edge of the first feeding hole is higher than the upper end of the stirrer in the vertical direction; the spiral structures of the at least two spiral conveying cylinders prolong the moving path of soil entering the mixing box, but can provide a certain supporting force for the soil entering the pipeline, reduce the excavation pressure at the at least two excavation conveying plows and effectively improve the excavation efficiency, and the second feeding hole is formed in the upper end of the mixing box; the other ends of the at least two spiral conveying cylinders are communicated to the first feed inlet; the discharge ports are arranged on the side wall of the mixing box side by side and are arranged towards the rear of the vehicle body; the distributing device 50 is arranged at the rear end of the vehicle body, is a long strip-shaped hollow cylinder, and is provided with an inner cavity communicated with the first discharge ports through obliquely arranged conveying channels, and a long strip-shaped opening facing the ground; the storage box 60 is arranged on the vehicle body, a second discharge hole is formed in the bottom of the storage box, and the first discharge hole is communicated with the second feed hole through a conveying pipeline; at least two turning plows 70 which are arranged below the vehicle body side by side at intervals, the at least two turning plows and the at least two soil digging and conveying plows are alternately arranged at intervals one by one in the axial direction of the vehicle body, and the at least two turning plows are positioned behind the at least two soil digging and conveying plows in the advancing direction of the vehicle body; in the advancing process of the vehicle body, the plowing depth of the at least two soil turning plows is smaller than the digging depth of the at least two soil digging and conveying plows; a liquid storage tank 80 provided on the vehicle body; at least two liquid guide pipes, one end of each liquid guide pipe is communicated to the bottom of the liquid storage tank, and the other end of each liquid guide pipe extends downwards and is respectively arranged behind the at least two soil digging and conveying plows; at least two nozzles 801 respectively provided on the other ends of the at least two liquid guide pipes, and the at least two nozzles are located in front of the at least two turning plows in the traveling direction of the vehicle body.
In this scheme, the automobile body is used for bearing other subassemblies and realizes that walking soil is administered, realizes that the normal position administers contaminated soil: the two sides of the vehicle body are provided with wheel bodies 101 which can advance at a certain speed according to actual needs under the driving of a tractor, at least two soil excavating and conveying plows are arranged below the vehicle body side by side at intervals, the at least two soil excavating and conveying plows are arc-shaped metal sheet bodies with tip ends, the tip ends of the two soil excavating and conveying plows face the advancing direction of the vehicle body, and the tail ends of the arc-shaped metal sheet bodies are wound into a cylindrical shape so as to form a conveying channel in the axial direction of the soil excavating and conveying plows; the method comprises the following steps of (1) digging soil with a certain depth, conveying the soil to a mixing box through at least two spiral conveying cylinders, crushing the dug soil in the mixing box, and fully mixing the crushed soil with a heavy metal treatment composition; finally, discharging the mixture to a distributing device through a plurality of first discharge ports, uniformly paving the mixed soil and heavy metal treatment composition on the ploughed soil through the distributing device, and communicating an inner cavity of the distributing device with the plurality of first discharge ports through obliquely arranged conveying channels; the connecting passage between the mixing box and the distributing device is reduced, so that the soil which just enters the mixing box is prevented from directly entering the distributing device to a certain extent, and the mixing effect is improved; in addition, the liquid storage tank is used for storing heavy metal treatment liquid, when at least two soil digging and conveying plows dig soil with a certain depth to form a strip-shaped ditch at the rear part of the soil digging and conveying plows, at least two liquid guide pipes and at least two nozzles are matched with each other, the heavy metal treatment liquid is sprayed into the strip-shaped ditch according to the amount, and then the soil around the strip-shaped ditch is ploughed through the soil of at least two soil ploughing plows and the strip-shaped ditch is buried. In practical application, at least two soil turning plows can be lifted and lowered through the hydraulic telescopic rod 701 or the electric telescopic rod 701 so as to adjust the height of the soil turning plows relative to a vehicle body and avoid influencing the traveling of the vehicle body.
To sum up, the soil heavy metal treatment device can spray heavy metal treatment liquid into the deeper position of heavy metal soil according to the volume while ploughing to cover the soil layer that has heavy metal treatment composition for the soil top layer after ploughing, and then carry out the degree of depth of layering and administer to heavy metal contaminated soil, in order to effectively improve treatment effect.
As shown in fig. 3, in a preferred embodiment, the bottom of the mixing box is inclined toward the traveling direction of the vehicle body, and the bottom of the mixing box forms an included angle smaller than 15 degrees with the axial direction of the vehicle body. The bottom of mixing box is less than 15 degrees with the contained angle of automobile body to block to a certain extent that the soil that just got into the mixing box directly gets into the distributing device, improves the mixed effect.
As shown in fig. 4, in a preferred embodiment, the mixing box further includes a mixing and stirring portion 402 and a mixing and conveying portion 403, which are communicated with each other, the mixing and stirring portion is a vertically arranged cylindrical barrel i, the stirrer is vertically arranged in the mixing and stirring portion, the mixing and conveying portion is a horizontally arranged semi-cylindrical barrel ii, and a rotating conveying roller 404 is arranged in the axial direction of the mixing and conveying portion; a plurality of rows of metal bristles 4041 which are coaxially and uniformly distributed on the rotating conveyor roller in the direction from the mixing/stirring section to the mixing/conveying section; the relationship between the height h of the mixing and stirring part and the cross section diameter r of the mixing and conveying part is that h is more than or equal to 2 r. In this scheme, the mixing stirring portion can fully mix soil and heavy metal treatment composition, and the mixed transport portion of establishing violently on the one hand can prevent soil and heavy metal treatment composition direct outflow mixing stirring portion, and on the other hand can be regularly quantitative again with mixed soil and heavy metal treatment composition outwards transport.
In a preferable scheme, the plowing depths H of at least two soil turning plows are formed in the traveling process of the vehicle body1The depth H of excavation with at least two excavation transporting plows2Has a relationship of H1≤2/3H2。
As shown in fig. 5, in a preferred embodiment, the bottom of the storage box is funnel-shaped, and a vibrating screen is disposed near the bottom of the storage box. The aperture of the vibrating screen is larger than the maximum particle size of the heavy metal treatment composition, the heavy metal treatment composition is mainly conveyed by vibration promotion, and the heavy metal treatment composition is sieved as an auxiliary.
In a preferred embodiment, the length of any one of the spiral delivery cylinders is less than 3 meters. The length of any spiral delivery cylinder can be 1 meter, 2 meters or 3 meters, adjusted according to the height of the mixing box.
Example 2
The method for treating heavy metal pollution by adopting the soil heavy metal treatment device comprises the following steps:
step one, deeply ploughing a land to be treated, wherein the ploughing depth is 0.4-0.45 m;
step two, deeply digging strip-shaped ditches at certain intervals by adopting at least two soil digging and conveying plows of the soil heavy metal treatment device, spraying a certain amount of heavy metal treatment liquid through at least two nozzles, and calculating the use amount of the heavy metal treatment liquid according to the area of the heavy metal soil to be treated to be 2L/m2(ii) a Mixing the soil dug out from the strip-shaped trench with the heavy metal treatment composition according to the mass ratio of 5:1 to obtain a mixture for later use;
step three, shallowly turning the ground between the strip-shaped ditches by using at least two soil turning plows of the soil heavy metal treatment device, burying the strip-shaped ditches and leveling the ground;
and step four, spreading the mixture on the leveled ground by adopting a distributor.
Wherein, the distance between two adjacent strip-shaped grooves is 0.8-0.9m, the width of any strip-shaped groove is 0.1-0.2m, and the depth of any strip-shaped groove is 0.45-0.50 m.
The shallow depth is 0.2-0.25 m.
The preparation method of the heavy metal treatment liquid comprises the following steps:
mixing and fermenting 10 parts of forest land soil without heavy metal pollution, 5 parts of kitchen garbage, 2 parts of sugar residues and 1 part of crop straws to obtain a fermentation product, then leaching the fermentation product with 10 parts of water while stirring to obtain leacheate and residues, repeatedly leaching for 2-3 times, combining the leacheate, and then diluting the leacheate by 500 times to obtain a heavy metal treatment solution; the heavy metal treatment liquid contains a certain amount of organic matters and a plurality of beneficial bacteria so as to adjust the content and distribution of the beneficial bacteria in the heavy metal soil and improve the treatment effect;
the preparation method of the heavy metal treatment liquid comprises the following steps:
according to the weight portion, 5 portions of residue, 2 portions of quicklime, 1 portion of 2, 3-diphosphoglycerate and 2 portions of diatomite are uniformly mixed and compressed into particles with the particle size of less than 2mm, and then the particles, 3 portions of activated carbon and 1 portion of fly ash are uniformly mixed to prepare the heavy metal treatment composition.
Example 3
The method for treating heavy metal pollution by adopting the soil heavy metal treatment device comprises the following steps:
step one, deeply ploughing a land to be treated, wherein the ploughing depth is 0.45-0.50 m;
step two, deeply digging strip-shaped ditches at certain intervals by adopting at least two soil digging and conveying plows of the soil heavy metal treatment device, spraying a certain amount of heavy metal treatment liquid through at least two nozzles, and calculating the use amount of the heavy metal treatment liquid according to the area of the heavy metal soil to be treated to be 3L/m2(ii) a Mixing the soil dug out from the strip-shaped trench with the heavy metal treatment composition according to the mass ratio of 5:1 to obtain a mixture for later use;
step three, shallowly turning the ground between the strip-shaped ditches by using at least two soil turning plows of the soil heavy metal treatment device, burying the strip-shaped ditches and leveling the ground;
and step four, spreading the mixture on the leveled ground by adopting a distributor.
Wherein, the distance between two adjacent strip-shaped grooves is 0.9-1.0m, the width of any strip-shaped groove is 0.2-0.3m, and the depth of any strip-shaped groove is 0.50-0.55 m.
The shallow depth is less than 0.15-0.2 m.
The preparation method of the heavy metal treatment liquid comprises the following steps:
mixing and fermenting 10 parts of forest land soil without heavy metal pollution, 5 parts of kitchen garbage, 2 parts of sugar residues and 1 part of crop straws to obtain a fermentation product, then leaching the fermentation product with 10 parts of water while stirring to obtain leacheate and residues, repeatedly leaching for 2-3 times, combining the leacheate, and then diluting the leacheate by 700 times to obtain a heavy metal treatment solution; the heavy metal treatment liquid contains a certain amount of organic matters and a plurality of beneficial bacteria so as to adjust the content and distribution of the beneficial bacteria in the heavy metal soil and improve the treatment effect;
the preparation method of the heavy metal treatment liquid comprises the following steps:
according to the weight portion, 5 portions of residue, 2 portions of quicklime, 1 portion of 2, 3-diphosphoglycerate and 2 portions of diatomite are uniformly mixed and compressed into particles with the particle size of less than 2mm, and then the particles, 3 portions of activated carbon and 1 portion of fly ash are uniformly mixed to prepare the heavy metal treatment composition.
Example 4
The method for treating heavy metal pollution by adopting the soil heavy metal treatment device comprises the following steps:
step one, deeply ploughing a land to be processed, wherein the ploughing depth is 0.50-0.55 m;
step two, deeply digging strip-shaped ditches at certain intervals by adopting at least two soil digging and conveying plows of the soil heavy metal treatment device, spraying a certain amount of heavy metal treatment liquid through at least two nozzles, and calculating the use amount of the heavy metal treatment liquid according to the area of the heavy metal soil to be treated to be 5L/m2(ii) a Mixing the soil dug out from the strip-shaped trench with the heavy metal treatment composition according to the mass ratio of 5:2 to obtain a mixture for later use;
step three, shallowly turning the ground between the strip-shaped ditches by using at least two soil turning plows of the soil heavy metal treatment device, burying the strip-shaped ditches and leveling the ground;
and step four, spreading the mixture on the leveled ground by adopting a distributor.
Wherein, the distance between two adjacent strip-shaped grooves is 1.1-1.2m, the width of any strip-shaped groove is 0.3-0.4m, and the depth of any strip-shaped groove is 0.50-0.55 m.
The shallow depth is less than 0.2-0.25 m.
The preparation method of the heavy metal treatment liquid comprises the following steps:
mixing and fermenting 10 parts of forest land soil without heavy metal pollution, 5 parts of kitchen garbage, 2 parts of sugar residues and 1 part of crop straws to obtain a fermentation product, then leaching the fermentation product with 10 parts of water while stirring to obtain leacheate and residues, repeatedly leaching for 2-3 times, combining the leacheate, and then diluting the leacheate by 1000 times to obtain a heavy metal treatment solution; the heavy metal treatment liquid contains a certain amount of organic matters and a plurality of beneficial bacteria so as to adjust the content and distribution of the beneficial bacteria in the heavy metal soil and improve the treatment effect;
the preparation method of the heavy metal treatment liquid comprises the following steps:
according to the weight portion, 5 portions of residue, 2 portions of quicklime, 1 portion of 2, 3-diphosphoglycerate and 2 portions of diatomite are uniformly mixed and compressed into particles with the particle size of less than 2mm, and then the particles, 3 portions of activated carbon and 1 portion of fly ash are uniformly mixed to prepare the heavy metal treatment composition.
Comparative example 1
The heavy metal treatment solution in the same amount as that in example 2 is directly sprayed on the land to be treated.
Comparative example 2
The heavy metal treatment solution of example 3 was directly sprayed onto the plots to be treated.
Comparative example 3
The heavy metal treatment solution of example 4 was directly sprayed onto the plots to be treated.
Comparative example 4
The topsoil and the heavy metal treatment composition are mixed according to the proportion of the embodiment 2 and then applied to the land to be treated.
Comparative example 5
The topsoil and the heavy metal treatment composition are mixed according to the proportion of the embodiment 3 and then applied to the land to be treated.
Comparative example 6
The topsoil and the heavy metal treatment composition are mixed according to the proportion of the embodiment 4 and then applied to the land to be treated.
In the middle ten days of 4 months, the same plots to be treated are respectively arranged, after the plots to be treated are treated by the methods of the examples 1-3 and the comparative examples 1-6, spinach transplanting is carried out after stable balance for one month, the field water management is consistent with the normal facility agricultural production, the insect killing, weeding and watering are carried out timely, and pollution-free underground water is adopted for irrigation during the test period in order to prevent pollution while repairing; soil and plant samples were collected at the end of 6 months. Analyzing and measuring corresponding biological indexes and chemical indexes.
Collecting samples:
1. collecting plant samples: spinach was grown for one month and sampled by S-sampling, 9 points per plot to be treated. Washing with tap water, moistening with deionized water, drying with filter paper, weighing fresh weight of plant, deactivating enzyme at 105 deg.C for 0.5h, drying at 75 deg.C to constant weight, weighing dry weight, pulverizing sample, and measuring Cd content in plant, and averaging 9 points per plot to be treated.
2. Collecting a soil sample: the soil sample is also sampled by an S sampling method, the sampling depth is 0-20cm, and 9 points are arranged on each land to be processed. Taking 3 groups of plant rhizosphere soil, mixing uniformly, bagging and bringing back to a laboratory. The soil sample is naturally dried, mechanically crushed and sieved by a 80-mesh sieve. The prepared soil sample is used for measuring the heavy metal content of the soil, and an average value is taken at 9 points of each land to be treated.
Data statistics
The statistical results of the plant total cadmium content data are shown in Table 1
Figure BDA0002443065460000101
TABLE 1
As can be seen from Table 1: after different treatments, the total cadmium content of the plants is changed to a certain extent, and the content of Cd in the spinach can reach the environmental quality evaluation standard of producing areas of edible agricultural products (less than or equal to 0.2 mg. kg < -1 >), wherein the effects of the examples 2 to 4 are better, the treatment effect of the example 3 is most obvious, and the effect is far better than that of other groups.
The statistical results of the effective cadmium content in the soil are shown in Table 2
Figure BDA0002443065460000111
TABLE 2
As can be seen from Table 2: after different treatments, the content of Cd in the effective state of the polluted soil is reduced, wherein the repairing effect of the examples 2 to 4 is more obvious than that of other groups, and the effect of the example 3 is far better than that of other groups.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. The utility model provides a soil heavy metal administers device which characterized in that includes:
a vehicle body;
the two soil-excavating conveying plows are arranged below the vehicle body side by side at intervals, the two soil-excavating conveying plows are arc-shaped metal sheets with sharp ends, and the tail ends of the arc-shaped metal sheets are wound into a cylinder shape so as to form a conveying channel in the axial direction of the soil-excavating conveying plows;
one end of each of the at least two spiral conveying cylinders is connected to the tail end of the arc-shaped metal sheet body, and the other end of each spiral conveying cylinder extends to the obliquely upper part of the vehicle body;
the mixing box, it sets up on the automobile body, the mixing box still includes: the stirrer is arranged at the bottom of the mixing box; the first feeding hole is formed in the side wall of the mixing box, and the lower edge of the first feeding hole is higher than the upper end of the stirrer in the vertical direction; the second feed inlet is arranged at the upper end of the mixing box; the other ends of the at least two spiral conveying cylinders are communicated to the first feed inlet; the discharge ports are arranged on the side wall of the mixing box side by side and are arranged towards the rear of the vehicle body; the distributing device is arranged at the rear end of the vehicle body, and an inner cavity of the distributing device is communicated with the first discharge ports through obliquely arranged conveying channels;
the storage box is arranged on the vehicle body, a second discharge hole is formed in the bottom of the storage box, and the first discharge hole is communicated with the second feed hole through a conveying pipeline;
the at least two soil turning plows are arranged below the vehicle body in parallel at intervals, the at least two soil turning plows and the at least two soil digging and conveying plows are alternately arranged one by one at intervals in the axial direction of the vehicle body, and the at least two soil turning plows are positioned behind the at least two soil digging and conveying plows in the advancing direction of the vehicle body; in the advancing process of the vehicle body, the plowing depth of the at least two soil turning plows is smaller than the digging depth of the at least two soil digging and conveying plows;
the liquid storage tank is arranged on the vehicle body; at least two liquid guide pipes, one end of each liquid guide pipe is communicated to the bottom of the liquid storage tank, and the other end of each liquid guide pipe extends downwards and is respectively arranged behind the at least two soil digging and conveying plows; and the at least two nozzles are respectively arranged at the other ends of the at least two liquid guide pipes, and in the advancing direction of the vehicle body, the at least two nozzles are positioned in front of the at least two turning plows.
2. The soil heavy metal remediation device of claim 1 wherein the bottom of the mixing tank is inclined towards the direction of travel of the vehicle body and the bottom of the mixing tank is at an angle of less than 15 degrees to the axial direction of the vehicle body.
3. The soil heavy metal treatment device of claim 1, wherein the mixing tank further comprises a mixing and stirring part and a mixing and conveying part which are communicated with each other, the mixing and stirring part is a vertically arranged cylindrical barrel I, the stirrer is vertically arranged in the mixing and stirring part, the mixing and conveying part is a horizontally arranged semi-cylindrical barrel II, and a rotary conveying roller is arranged in the axial direction of the mixing and conveying part; a plurality of rows of metal bristles which are coaxially and uniformly distributed on the rotating conveying roller, wherein the rotating direction of the rotating conveying roller is from the mixing and stirring part to the mixing and conveying part; the relationship between the height h of the mixing and stirring part and the cross section diameter r of the mixing and conveying part is that h is more than or equal to 2 r.
4. The soil heavy metal remediation device of claim 1 wherein the at least two plow plows have a depth H of plowing during travel of said vehicle1The depth H of excavation with at least two excavation transporting plows2Has a relationship of H1≤2/3H2。
5. The soil heavy metal remediation device of claim 1 wherein the bottom of the storage tank is funnel shaped and a shaker is provided adjacent the bottom of the storage tank.
6. The soil heavy metal remediation device of claim 1 wherein the length of any one of the spiral delivery cylinders is less than 3 metres.
7. A soil heavy metal treatment method is characterized by comprising the following steps:
step one, deeply ploughing a land to be processed, wherein the ploughing depth is 0.4-0.55 m;
step two, deeply digging strip-shaped ditches at certain intervals by adopting at least two soil digging and conveying plows of the soil heavy metal treatment device, spraying a certain amount of heavy metal treatment liquid through at least two nozzles, and mixing the soil dug in the strip-shaped ditches and the heavy metal treatment composition according to the mass ratio of 5:1-5:2 to obtain a mixture for later use;
step three, shallowly turning the ground between the strip-shaped ditches by using at least two soil turning plows of the soil heavy metal treatment device, burying the strip-shaped ditches and leveling the ground;
and step four, spreading the mixture on the leveled ground by adopting a distributor.
8. The soil heavy metal treatment method of claim 7, wherein in the second step, the distance between two adjacent strip-shaped ditches is 0.8-1.2m, the width of any strip-shaped ditch is 0.1-0.4m, and the depth of any strip-shaped ditch is 0.45-0.55 m.
9. The soil heavy metal remediation method of claim 7 wherein the shallow depth of turn is less than 0.3 m.
10. The soil heavy metal remediation method of claim 7 wherein the heavy metal remediation liquor is prepared as follows:
mixing and fermenting 10 parts of forest land soil without heavy metal pollution, 5 parts of kitchen garbage, 2 parts of sugar residues and 1 part of crop straws to obtain a fermentation product, then leaching the fermentation product with 10 parts of water while stirring to obtain leacheate and residues, repeatedly leaching for 2-3 times, then combining the leacheate, and then diluting the leacheate by 500 times and 1000 times to obtain a heavy metal treatment solution;
the preparation method of the heavy metal treatment liquid comprises the following steps:
according to the weight portion, 5 portions of residue, 2 portions of quicklime, 1 portion of 2, 3-diphosphoglycerate and 2 portions of diatomite are uniformly mixed and compressed into particles with the particle size of less than 2mm, and then the particles, 3 portions of activated carbon and 1 portion of fly ash are uniformly mixed to prepare the heavy metal treatment composition.
CN202010273496.5A 2020-04-09 2020-04-09 Soil heavy metal treatment device and treatment method Withdrawn CN111448858A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111871605A (en) * 2020-07-29 2020-11-03 杭州石炭纪环保科技有限公司 Method for removing heavy metal in fly ash
CN113557810A (en) * 2021-07-27 2021-10-29 六安市叶集区长塔农业科技有限公司 Soil salinization prevention and control device
CN116615982A (en) * 2023-02-01 2023-08-22 鸿灌环境技术有限公司 Repairing device and method for treating soil microorganism diseases and insect pests

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111871605A (en) * 2020-07-29 2020-11-03 杭州石炭纪环保科技有限公司 Method for removing heavy metal in fly ash
CN111871605B (en) * 2020-07-29 2022-07-26 杭州石炭纪环保科技有限公司 Method for removing heavy metal in fly ash
CN113557810A (en) * 2021-07-27 2021-10-29 六安市叶集区长塔农业科技有限公司 Soil salinization prevention and control device
CN116615982A (en) * 2023-02-01 2023-08-22 鸿灌环境技术有限公司 Repairing device and method for treating soil microorganism diseases and insect pests
CN116615982B (en) * 2023-02-01 2023-12-01 鸿灌环境技术有限公司 Repairing device and method for treating soil microorganism diseases and insect pests

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