CN105149337A - Method for remediating cadmium contaminated arable soil - Google Patents

Method for remediating cadmium contaminated arable soil Download PDF

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Publication number
CN105149337A
CN105149337A CN201510638040.3A CN201510638040A CN105149337A CN 105149337 A CN105149337 A CN 105149337A CN 201510638040 A CN201510638040 A CN 201510638040A CN 105149337 A CN105149337 A CN 105149337A
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soil
heavy metal
cadmium
arable soil
arable
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CN105149337B (en
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游建军
钟儒波
胡志鑫
蒋希文
唐传祥
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Hunan Aibulu environmental Polytron Technologies Inc
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HUNAN AIRBLUER ENVIRONMENTAL PROTECTION TECHNOLOGY Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/08Reclamation of contaminated soil chemically
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00In situ

Abstract

The invention discloses a method for remediating cadmium contaminated arable soil. The method comprises the following steps: (1) pouring water in a piece of cadmium contaminated cultivated land; (2) throwing a compound remediating drug water solution in the cultivated land for reaction to obtain reaction water; (3) plowing and stirring the cadmium contaminated arable soil; (4) keeping still after plowing the cadmium contaminated arable soil; (5) leading out the reaction water, and conducting flocculating settling treatment on the reaction water; and (6) scattering compound soil conditioners. The method had the advantages that the cadmium contaminated arable soil can be remediated, the advanced treatment can be realized, the yield of crops can be improved, secondary contamination, which is caused by other heavy metals and organics, is avoided, and the soil fertility is improved. Vehicle-mounted mobile dosing and flocculating settling equipment is introduced, and after a piece of cultivated land is treated, the vehicle-mounted mobile dosing and flocculating settling equipment is moved to another piece of cultivated land for treating, so that defects of manual handling and repeatedly assembling of equipment are avoided.

Description

A kind of method that heavy metal cadmium arable soil is repaired
Technical field
The invention belongs to soil pollution control and reparation field, refer to a kind of method that heavy metal cadmium arable soil is repaired further.
Background technology
Along with the development of people's mining, smelting technique and modern industry, heavy metal pollution has become very serious and one of pollution of pole refractory reason.In soil environment, source of heavy metal pollution mainly contains the stacking of mine tailing in mining process and washwater directly discharges, the unprocessed random discharges of industry " three wastes " such as smelting, plating, and rural sewage is irrigated and Extract from Gasoline-fueled Vehicle discharge etc.
Cadmium is a kind of high toxicity heavy metal element easily entering human body with the contents level of danger, and the half-life, it can be divided into acute poisoning and chronic carcinogenic two aspects to the harm of human body, causes to reach 10 ~ 30 years the incubation period of slow poisoning more than 20 years.Mainly be distributed in liver and kidney after cadmium is absorbed by the body, be combined into metalloprotein with low molecular weight protein.Cadmium can replace the calcium in bone gradually in bone after enrichment, bone is seriously softened.Cadmium also can disturb the enzyme system in human body and organism, causes viscera function to lack of proper care, and then causes canceration distortion.Cadmium poisoning main manifestations is the infringement of renal function and the damage of lung, cause cortical necrosis of kidney, tubular injury, pulmonary emphysema, pulmonary edema, can also cause cardiac enlargement and hypertension, long-term cadmium of taking in will cause osteoporosis, embrittlement, waist disease, deformity of spine.In addition, cadmium can also cause male reproductive damage, and the incidence that male sex hormone increases increases with the rising of exposure level, and the incidence of prostate distinct antibodies also increases simultaneously.Cadmium in soil mainly exists in conjunction with the form of state cadmium and remaining state cadmium with exchange state cadmium, obligate ADSORPTION STATE cadmium, Fe-Mn oxidation, although Cadmium Pollution in Soils does not cause direct contact harm to human body, the cadmium in contaminated soil can enter human body by food chain and cause serious harm.
At present, China's rice cadmium pollution problem is also more serious, according to investigations, in more than 170 rice sample in China six areas (East China, northeast, Central China, south China and North China) market above county level, the problem that has the commercially available rice of 10% to there is cadmium to exceed standard.The soil contamination problem caused by heavy metals such as cadmiums in China in recent years has more report.20th century the mid-80 to south, certain is economized cadmium pollution water and irrigates the research that the IA that causes does and show, rice cadmium content exceeding standard rate is 71.69%, the poultry eggs amount of not transfiniting.The investigation certain province's food cadmium pollution situation of south carried out in 2005 ~ 2009 years, the recall rate of cadmium is 64.4%, and exceeding standard rate is 7.3%; The cadmium food that exceeds standard relates to grain, fruit, edible mushroom, aquatic products, pluck etc., illustrates in some regional cadmium pollution situations commonplace, should cause enough attention.
At present, heavy metal soil restoring technology comprises following several:
1. peripheral doses technology: peripheral doses technology comprises soil air lift technology, stable/solidification recovery technique, vitrification, heat treatment technics and Electroremediation technology etc.But the weak point that this technology exists: rehabilitation cost is expensive, energy consumption exists secondary pollution greatly, even.
2. bioremediation technology: bioremediation technology comprises microorganism remediation technology, phytoremediation technology, plant curing technology etc.But the weak point that this technology exists: the cycle of administering is very long, the later stage plant collect, treatment technology is more complicated, the maintenance management cycle is long.
3. chemical remediation technology: chemical remediation technology comprises Soil leaching technology, technology, chemical dehalogenation technology, solvent extraction techniques etc. are redeemed a vow to a god in oxidation.But the weak point that this technology exists: quantities is large, investment cost is high, spoiled soil structure, cause that fertility declines, heavy metal element is still retained in soil, easily endangers plant once again, is entered in animals and plants and human body by food chain.
Such as, patent application 201410519912 discloses a kind of contaminated soil remediation method, comprises (1) and concentrates heap contaminated soil: after being dug out by contaminated soil, pile in heaps, outer edge is closed with blocking; (2) breather line is arranged: bury breather line underground in the inside of contaminated soil heap, described breather line is communicated with gas source; (3) Additional nutrient solution: arrange spray head on the top of contaminated soil heap, sprays nutrient solution to contaminated soil heap; (4) drainage system is set: drainpipe is set in the bottom of contaminated soil heap.
Patent application 201510277745.7 discloses a kind of restorative procedure of cadmium pollution soil, belongs to soil remediation field.The invention provides the pyrolkigneous liquid by selecting rice straw and/or rape straw to prepare and charcoal, first annual May ~ October rice cultivation in the soil of cadmium pollution, and charcoal is applied before Rice Cropping, thus the paddy rice (cadmium content meets national standard) meeting national standard can be prepared in the soil of cadmium pollution, in the soil of this cadmium pollution, rape is planted to the May of next year after rice harves, pyrolkigneous liquid is applied by selecting the specific period, can safety, effectively cadmium in cadmium pollution soil is removed, thus the cadmium effectively removed in soil.
Patent application 201410198948.2 discloses the application of a kind of dicyandiamide in Cd-polluted farmland: for promoting crop yield and reducing the cadmium content in crop.Be specially: add the dicyandiamide Homogeneous phase mixing accounting for N (nitrogen) weight 12.5 ~ 30% in nitrogenous fertilizer after, as the fertilizer of Cd-polluted farmland; Described nitrogenous fertilizer is ammonium fertilizer, ammonium nitrate fertilizer or urea.
Patent 201310462462.0 discloses a kind of plant restoration method of cadmium pollution soil, comprises the following steps: in the soil of cadmium pollution, plant rye grass, before results, add organic acid; Described organic acid is selected from the one in ethylenediamine tetra-acetic acid, oxalic acid, glacial acetic acid, malonic acid, tartaric acid or malic acid.
Visible, in prior art about soil pollution by heavy metal or the restorative procedure about cadmium pollution various, respectively have quality, the present invention studies a kind of applicable cadmium pollution arable soil targetedly, simple and practical and effective method is necessary.
Summary of the invention
For the deficiency of above technology, the invention provides a kind of method that heavy metal cadmium arable soil is repaired.This invention possesses skills reliably feasible, simple to operate, and treatment cost is low, does not bring new pollutant into, does not produce the advantage of secondary pollution.
In order to solve the problems of the technologies described above, scheme provided by the invention is:
The method that heavy metal cadmium arable soil is repaired, comprises the following steps:
(1) to by water-filling in the arable land of cadmium pollution, water covering tilling depth is made to be 300mm-500mm;
(2) in the arable land described in step (1), add compound join and repair the medicament aqueous solution and react, obtain reaction water; Every 1L compound joins the formulation ratio repaired in the medicament aqueous solution:
Chalybeate 700mg-800mg;
Diatomite 50mg/-100mg;
PH value regulator, consumption controls to be as the criterion between 5-6 to make compound join the pH value of repairing the medicament aqueous solution;
Described chalybeate is one or both in ferric trichloride and green vitriol;
(3), after dosing, to turn over stirring to the arable soil by cadmium pollution, ploughed depth is 300mm-500mm;
(4) turn over rear static 30min-60min;
(5) one jiao of excavation pump hole in arable land, described reaction water is introduced pump hole, then reaction water is pumped to vehicle-carried mobile formula flocculating setting equipment, first carries out flocculation treatment and carries out settlement treatment again, obtain supernatant and bed mud, described supernatant fluid reuse; The bodied ferric sulfate of 50mg/L-60mg/L and the polyacrylamide of 1mg/L-2mg/L is added in described flocculation treatment process;
(6) send out compound to the arable soil through medicament reparation and join soil conditioner, described compound joins the formula of soil conditioner and mass percentage is:
7. micro-8%-12%, and the mass percentage sum of each component is 100%;
Described soil conditioner is one or both in flyash and lime;
It is two or more that described oxide is selected from silica, calcium oxide and magnesia.
Preferred version, step (2) described pH value regulator is milk of lime.
Preferred version, step (2) adopts the configuration of vehicle-carried mobile formula medicine machine and adds compound joins the reparation medicament aqueous solution, described vehicle-carried mobile formula medicine machine comprises transporting equipment and is arranged on the workbench on transporting equipment, and described workbench comprises multiple head tank, the dispensing canister be communicated with head tank and the measuring pump be communicated with dispensing canister and chemical feed pipe.
Preferred version, step (2) described compound is joined the dosage repairing the medicament aqueous solution and is determined according to the land pollution situation of required reparation, is generally 50L/ mu-200L/ mu.
Preferred version, step (5) adopts vehicle-carried mobile formula flocculating setting equipment to carry out flocculation sediment to the reaction water of drawing, described vehicle-carried mobile formula flocculating setting equipment comprises transporting equipment, described transporting equipment is provided with workbench, and described workbench comprises the flocculation tank, stillpot and the bed mud accumulator tank that are communicated with successively.
Further preferred version, described flocculation tank top is provided with muddy water inlet port, and described flocculation tank inside is provided with agitating device; Described stillpot top is provided with stillpot outlet pipe, and described stillpot inside is provided with inclined tube, is provided with bed mud delivery pipe bottom described stillpot, and described bed mud delivery pipe is communicated with described bed mud accumulator tank.
Preferred version, it is two or more that step (6) described trace element is selected from copper, iron, zinc, boron and molybdenum.
Preferred version, it is 100 order-200 object particulate powder that step (6) described compound joins soil conditioner.
Preferred version, the applied amount that step (6) described compound joins soil conditioner is determined according to the ground condition of required improvement, is generally as 50kg/ mu-100kg/ mu.
The function that compound joins soil conditioner is that the arable soil repaired is carried out to advanced treating, improves the performance in arable land and improve crop yield.
Mechanism of the present invention is: by joining and repair medicament and compound to by adding compound in the arable soil of cadmium pollution and join soil conditioner, the cadmium in soil is made to produce the series reaction such as absorption, complexing, precipitation, ion-exchange and redox, reduce the activity of cadmium in soil and transportable property, thus reduce crops to the absorption of cadmium, make Cadmium in Soil content up to standard, make the soil remediation method of increasing crop yield.
Compared with prior art, the invention has the beneficial effects as follows:
The method can be repaired the arable soil by cadmium pollution, can accomplish advanced treating, and can improve the output of crops, and do not cause the secondary pollution of other heavy metal, organic matters etc., soil fertility increases.Introduce vehicle-mounted removable dosing and flocculating setting equipment again, can process and directly can to move to another sheet after a slice is ploughed and plough and process, remove a dead lift from, repeatedly the defect such as mounting equipment, its operability and mobility strong.
Owing to having, input is lower, speed is fast, operation feasible is simple and reliable, mobility strong in the present invention, in large area, the arable soil reparation of low concentration pollution has good effect, its promotion and application have a extensive future.
Accompanying drawing explanation
Fig. 1 is restorative procedure Plane association figure of the present invention;
Fig. 2 is the vehicle-carried mobile formula medicine machine plane of the embodiment of the present invention;
Fig. 3 is the A-A profile of Fig. 2;
Fig. 4 is the vehicle-carried mobile formula flocculation sediment equipment plane of the embodiment of the present invention;
Fig. 5 is the B-B profile of Fig. 4;
Fig. 6 is process chart of the present invention;
In the drawings
1-is by the arable soil of cadmium pollution
2-vehicle-carried mobile formula medicine machine [including 2a-lime milk solution tank, 2b-liquor ferri trichloridi tank, 2c-tripolite solution tank, 2d-dispensing canister, 2e-measuring pump, 2f-chemical feed pipe]
3-rotary tillage mixing plant
4-pump hole [including 4a-immersible pump, 4b-water-supply-pipe]
5-vehicle-carried mobile formula flocculation sediment equipment [including 5a-flocculation tank, 5a (1)-mixer, 5b-stillpot, 5b (1)-inclined tube, 5c-stillpot outlet pipe, 5d-bed mud delivery pipe, 5e-bed mud accumulator tank].
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, with the following Examples the present invention is described in further detail.
Embodiment 1
For the arable soil (being planting vegetable originally) of a certain polluted by heavy metal cadmium, area is 2.8 mu, and the mean value of heavy metal in soil cadmium is 3.31mg/kg, exceeds standard more than 15 times, adopts the present invention to repair it.
As shown in Figure 1, the prosthetic appliance of a kind of heavy metal cadmium arable soil of the present invention and method, mainly comprise vehicle-carried mobile formula medicine machine 2, rotary tillage mixing plant 3, vehicle-carried mobile formula flocculation sediment equipment 5, and compound joins the research assembly of repairing medicament and compound and joining soil conditioner.
The method that described a kind of heavy metal cadmium arable soil is repaired, comprises following content and step:
(1) to arable soil 1 (being planting vegetable originally) the water-filling 400mm by cadmium pollution.
(2) as shown in Figure 2, vehicle-carried mobile formula medicine machine 2 is utilized to carry out dosing, vehicle-carried mobile formula medicine machine is reequiped by minitruck, and have workbench, workbench is provided with lime milk solution tank 2a, liquor ferri trichloridi tank 2b, tripolite solution tank 2c, dispensing canister 2d, measuring pump 2e and chemical feed pipe 2f.
Compound is joined and is repaired the preparation of medicament: 1. to lime milk solution tank 2a feeding lime breast, and opens mixer and fully stir, and mixer motor capacity is 0.75kw; 2. add ferric trichloride to liquor ferri trichloridi tank 2b, and open mixer and fully stir, mixer motor capacity is 1.5kw; 3. add diatomite to tripolite solution tank 2c, and open mixer and fully stir, mixer motor capacity is 0.45kw.Three kinds of medicine bodies enter dispensing canister 2d after being fully uniformly mixed reaction, through measuring pump 2e and chemical feed pipe 2f, the arable soil by cadmium pollution is added again, measuring pump 2e capacity motor is 0.61kw, chemical feed pipe 2f caliber is DN25, chemical feed pipe length is 2m, centrally bottom line, wrong 45 ° of oblique has 2mm aperture, and pitch-row is 100mm.
Compound join repair medicament configuration proportion, add concentration and function: lime milk solution accounts for 20%, adds concentration 200mg/L, pH value control 5 ~ 6, rise pH value regulating action; Liquor ferri trichloridi accounts for 70%, adds concentration 700mg/L, plays iron-based chemical combination; Diatomite accounts for 10%, adds concentration 100mg/L, plays suction-operated.
During dosing, drive vehicle-carried mobile formula medicine machine 2 to move ahead in contaminated arable soil 1, dosing in three kinds of medicine liquid solution tank 2a, 2b, 2c → dispensing canister 2d → measuring pump 2e → chemical feed pipe 2f move, dosage is determined according to the land pollution situation of required reparation, and this embodiment is 100-120L/ mu.
This is a kind of dosing method, and in prior art, any feasible dosing method is all fine.
(3) as shown in Figure 1, utilize rotary tillage mixing plant 3 to turn over stirring to the arable soil by cadmium pollution, ploughed depth is 300mm.Rotary tillage mixing plant 3 is reequiped by common compact farm tractor, after connect spiral rotating blade.In prior art any one turn over equipment can.
(4) from Fig. 1, Fig. 4, Fig. 5, turn over rear static 30min, reaction water introduced pump hole 4, aspirated be delivered to vehicle-carried mobile formula flocculation sediment equipment 5 through water-supply-pipe 4b by immersible pump 4a.Motor for submerged pump power is N=3kw, and lift is H=10m, and flow is 8.75m/h.
Vehicle-carried mobile formula flocculation sediment equipment 5 is reequiped by common agricultural automobile, and has workbench, workbench is provided with flocculation tank 5a, stillpot 5b and bed mud accumulator tank 5e.Be provided with mixer 5a (1) in flocculation tank, mixer motor power is 1.5kw, rotating speed is 60r/min; Be provided with inclined tube 5b (1) in stillpot, inclined tube internal diameter is 80mm, plagioclase 1m, level inclination 60 °.
During work, reaction water is introduced pump hole 4, aspirated the flocculation tank 5a be delivered to through water-supply-pipe 4b in vehicle-carried mobile formula flocculation sediment equipment 5 by immersible pump 4a, and add bodied ferric sulfate in flocculation tank, adding concentration is 60mg/L, controls pH value 7 ~ 9; Polyacrylamide, dosage is 1mg/L, and open mixer 5a (1) and be fully uniformly mixed reaction, again after stillpot 5b precipitate and separate, enter farmland after the standard of supernatant and water outlet reach " urban sewage reutilization farmland irrigation water water quality " GB/T20922-2007 and continue to utilize.The mean value of this example heavy metal cadmium before reparation is 3.31mg/kg, and after repairing, the mean value≤0.01mg/L of cadmium, reaches national standard; The bed mud of stillpot 5b enters bed mud accumulator tank 5e through bed mud delivery pipe 5d, carries out endanger useless process or resource reclaim by there being the unit of qualification.
After having repaired one piece or the contaminated arable soil of a slice, vehicle-carried mobile formula flocculation sediment equipment 5 can be driven repair process has been carried out to another block or a slice arable soil to be repaired.
(5) join soil conditioner to the arable soil through medicament reparation by manually sending out compound, applied amount is 80kg/ mu.
Compound joins configuration proportion and the function of soil conditioner: flyash accounts for 40%, plays soil remediation effect; Humic acid accounts for 10%, plays pH value cushioning effect; Silica accounts for 15%, calcium oxide accounts for 15%, plays chelation; Bentonite accounts for 10%, is additive; Trace copper, iron, zinc, boron, molybdenum respectively account for 2%, play the trophism to plant.The specification of various preparation is 100 orders above, is graininess.The function that compound joins soil conditioner is the output of carrying out advanced treating to the arable soil repaired, improving the performance of arable soil and raising crops.
(6) Fig. 6 is technological process of the present invention.
Embodiment 2
For the arable soil (being rice cultivation originally) of a certain polluted by heavy metal cadmium, area is 1.7 mu, and the mean value of heavy metal in soil cadmium is 2.81mg/L, adopts the present invention to carry out pilot experiment research to it.
During reparation, capital equipment all with embodiment 1, but is joined compound and is repaired the formula proportion of composing that medicament and compound join soil conditioner and adjust.
(1) compound after adjustment joins reparation medicament:
The basis of first wife adds green vitriol, and suitably have adjusted ratio.
1. lime milk solution accounts for 15%, and adding concentration is 150mg/L, and pH value controls 5 ~ 6;
2. green vitriol accounts for 35%, and adding concentration is 300mg/L;
3. ferric trichloride accounts for 42%, and adding concentration is 420mg/L;
4. diatomite accounts for 8%, and adding concentration is 80mg/L.
(2) compound after adjustment joins soil conditioner:
The basis of first wife adds lime and magnesium, and have adjusted ratio.
1. flyash and lime account for 30% altogether;
2. humic acid accounts for 10%;
3. silica accounts for 15%;
4. calcium oxide accounts for 15%;
5. magnesia accounts for 10%;
6. bentonite accounts for 10%;
7. trace copper, iron, zinc, boron, molybdenum respectively account for 2%.
The specification of various preparation is 100 orders above, is graininess.
Rice field cadmium content≤0.01mg/L after repairing, Second Year rice cultivation, makes Cd concentration of brown rice reduce 80%, increasing production of rice 5%.

Claims (9)

1. a method for heavy metal cadmium arable soil reparation, comprises the following steps:
(1) to by water-filling in the arable land of cadmium pollution, water covering tilling depth is made to be 300mm-500mm;
(2) in the arable land described in step (1), add compound join and repair the medicament aqueous solution and react, obtain reaction water; Every 1L compound joins the formulation ratio repaired in the medicament aqueous solution:
Chalybeate 700mg-800mg;
Diatomite 50mg-100mg;
PH value regulator, consumption controls to be as the criterion between 5-6 to make compound join the pH value of repairing the medicament aqueous solution;
Described chalybeate is one or both in ferric trichloride and green vitriol;
(3), after dosing reaction, to turn over stirring to the arable soil by cadmium pollution, ploughed depth is 300mm-500mm;
(4) turn over rear static 30min-60min;
(5) one jiao of excavation pump hole in arable land, introduces pump hole, then reaction water is drawn, first carry out flocculation treatment and carry out settlement treatment again, obtain supernatant and bed mud, described supernatant fluid reuse by described reaction water; The bodied ferric sulfate of 50mg/L-60mg/L and the polyacrylamide of 1mg/L-2mg/L is added in described flocculation treatment process;
(6) send out compound to the arable soil through medicament reparation and join soil conditioner, described compound joins the formula of soil conditioner and mass percentage is:
7. micro-8%-12%, and the mass percentage sum of each component is 100%;
Described soil conditioner is one or both in flyash and lime;
It is two or more that described oxide is selected from silica, calcium oxide and magnesia.
2. the method for heavy metal cadmium arable soil reparation according to claim 1, it is characterized in that, step (2) described pH value regulator is milk of lime.
3. the method for heavy metal cadmium arable soil reparation according to claim 1, it is characterized in that, step (2) adopts the configuration of vehicle-carried mobile formula medicine machine and adds compound joins the reparation medicament aqueous solution, described vehicle-carried mobile formula medicine machine comprises transporting equipment and is arranged on the workbench on transporting equipment, and described workbench comprises multiple head tank, the dispensing canister be communicated with head tank and the measuring pump be communicated with dispensing canister and chemical feed pipe.
4. the method for heavy metal cadmium arable soil reparation according to claim 1, is characterized in that, it is 50L/ mu-200L/ mu that step (2) described compound joins the dosage repairing the medicament aqueous solution.
5. the method for heavy metal cadmium arable soil reparation according to claim 1, it is characterized in that, step (5) adopts vehicle-carried mobile formula flocculating setting equipment to carry out flocculation sediment to the reaction water of drawing, described vehicle-carried mobile formula flocculating setting equipment comprises transporting equipment, described transporting equipment is provided with workbench, and described workbench comprises the flocculation tank, stillpot and the bed mud accumulator tank that are communicated with successively.
6. the method for heavy metal cadmium arable soil reparation according to claim 5, it is characterized in that, described flocculation tank top is provided with muddy water inlet port, and described flocculation tank inside is provided with agitating device; Described stillpot top is provided with stillpot outlet pipe, and described stillpot inside is provided with inclined tube, is provided with bed mud delivery pipe bottom described stillpot, and described bed mud delivery pipe is communicated with described bed mud accumulator tank.
7. the heavy metal cadmium arable soil method of repairing according to claim 1, it is characterized in that, it is two or more that step (6) described trace element is selected from copper, iron, zinc, boron and molybdenum.
8. the method for heavy metal cadmium arable soil reparation according to claim 1, it is characterized in that, it is 100 order-200 object particulate powder that step (6) described compound joins soil conditioner.
9. the method for heavy metal cadmium arable soil reparation according to claim 1, it is characterized in that, the applied amount that step (6) described compound joins soil conditioner is 50kg/ mu-100kg/ mu.
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Cited By (10)

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CN105363769A (en) * 2015-12-17 2016-03-02 中国有色桂林矿产地质研究院有限公司 Method for restoring cadmium-contaminated farmland soil
CN105618472A (en) * 2015-12-22 2016-06-01 湖南森美思环保有限责任公司 Method for removing effective-state heavy metal in heavy metal contaminated soil permanently
CN105710123A (en) * 2016-02-04 2016-06-29 周益辉 Method for remediation of volatile organic compound and mercury compound contaminated soil
CN105935698A (en) * 2016-05-30 2016-09-14 青岛理工大学 Novel pollution site Cu in-situ detoxification method
CN105935699A (en) * 2016-05-30 2016-09-14 青岛理工大学 Novel pollution site Sb in-situ detoxification method
CN105935691A (en) * 2016-05-30 2016-09-14 青岛理工大学 Novel contaminated site Cd in-situ detoxication method
CN105945053A (en) * 2016-05-30 2016-09-21 青岛理工大学 Novel contaminated site Pb in-situ detoxification method based on biogas residues
CN106914488A (en) * 2017-05-09 2017-07-04 湖南省土壤肥料研究所 A kind of soil-repairing agent and application for cadmium pollution rice field
CN107597838A (en) * 2017-11-02 2018-01-19 郑州晨昱硕电子科技有限公司 A kind of soil remediation continous way multi-stage crushing chemicals dosing plant
CN107641511A (en) * 2017-07-24 2018-01-30 中冶华天工程技术有限公司 For the preparation method and soil remediation method of the stabilization material for administering soil

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