CN103567219A - Multi-functional composite conditioner for controlling cadmium-polluted soil and remediation method for soil cadmium pollution - Google Patents
Multi-functional composite conditioner for controlling cadmium-polluted soil and remediation method for soil cadmium pollution Download PDFInfo
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Abstract
The invention discloses a multi-functional composite conditioner for controlling cadmium-polluted soil and a remediation method for soil cadmium pollution. The multi-functional composite conditioner comprises an inorganic passivation agent for soil heavy metal cadmium, an organic passivation agent and a cadmium antagonist, wherein the inorganic passivation agent is selected from red mud, hydroxyapatite, bentonite, zeolite or dolomite; the organic passivation agent comprises cruciferous plant residues or liliaceous plant residues. The cruciferous plant residues are Chinese cabbage plant residues, rape plant residues, leaf mustard plant residues or cabbage plant residues, and the liliaceous plant residues are garlic plant residues, onion plant residues or Chinese chive plant residues. The cadmium antagonist is a compound containing Zn, Ca or Fe. The multi-functional composite conditioner adopts a composite cadmium remediation mode, can reduce the content of cadmium in plant bodies, and provides an effective, feasible and economic means for the planting of agricultural products with normal content of cadmium.
Description
Technical field
The present invention relates to heavy metal-polluted soil and administer technical field, particularly relate to a kind of for administering the Multifunctional combined cooker agent of cadmium pollution soil and in the application of Cadmium Pollution in Soils restorative procedure.
Background technology
Along with industry and urbanization process development, it is all the more outstanding that China's agricultural land soil is faced with cadmium (Cd) pollution risk in recent years.Cd is owing to can be in soil environment existing lastingly, and can accumulate by Food chain, transmit, and human health is caused adverse effect and paid close attention to widely.China Cd polluted agricultural land surpasses 1.3 * 10 at present
4hm
2, relate to 25 areas of 11Ge provinces and cities.The vegetables of planting on many middle low Cd polluted agricultural lands are at present if the concentration of the spinach edible part Cd of leaf vegetables is over national standard 0.2mg kg
-1.Especially the southern rice cadmium event that exceeds standard constantly occurs.
One of existing Cadmium Pollution in Soils improvement method is to change form or the increase adsorption capacity to they of Cd in soil by adding passivation renovation agent, reduce mobility and the bioavailability of Cd, thereby reduce the absorption of crop to Cd, realize the target that pollution control and Land Sustainable utilize.But because cadmium pollution degree increases the weight of year by year, the amount that adopts single passivator to add is also just larger, as while adopting phosphate cadmium passivator, passivator is excessive on soil pH impact, reduce soil soluble phosphorus content, cause phosphorus element eutrophication, passivation effect is undesirable.Be badly in need of composite multi-functional soil conditioner, the validity of passivation Cadmium in Soil, stops cadmium to shift to edible part by cadmium antagonist on the one hand on the one hand, improves on the other hand soil property, and the validity that reduces Cadmium in Soil improves edaphophyte production capacity.
Summary of the invention
The invention provides a kind of for administering the Multifunctional combined cooker agent of cadmium pollution soil, except having the function of improving soil property, the advantage of combining in addition multiple passivation renovation agent, these passivation renovation agents of compound use are to improve the passivation efficiency of passivation renovation agent, add Cadmium in Soil antagonist, make up for each other's deficiencies and learn from each other, the optimum efficiency of performance Multifunctional combined cooker agent.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme: a kind of for administering the Multifunctional combined cooker agent of cadmium pollution soil, it comprises: the inorganic passivator of soil heavy metal cadmium, organic passivates and cadmium antagonist.
As above for administering the Multifunctional combined cooker agent of cadmium pollution soil, preferably, the weight proportion of described inorganic passivator, organic passivates and cadmium antagonist is 1:0.5～1:0.004～0.02.
As above for administering the Multifunctional combined cooker agent of cadmium pollution soil, preferably, described inorganic passivator is selected from red mud, hydroxyapatite, bentonite, zeolite or dolomite; Described organic passivates comprises the residual body of crucifer or the residual body of liliaceous plant.
As above for administering the Multifunctional combined cooker agent of cadmium pollution soil, preferably, the residual body of described crucifer is Chinese cabbage plant residue, rape plant residue, leaf mustard plant residue or the residual body of brassica oleracea plants, and described liliaceous plant body is garlic plant residue, green onion plant residue or leek plant residue.
As above for administering the Multifunctional combined cooker agent of cadmium pollution soil, preferably, the residual body of described crucifer or the residual body of liliaceous plant are that the fresh residual body of plant, the air-dry residual body of plant or plant are dried residual body.
As above for administering the Multifunctional combined cooker agent of cadmium pollution soil, preferably, described cadmium antagonist is the compound containing Zn, Ca or Fe.
As above for administering the Multifunctional combined cooker agent of cadmium pollution soil, preferably, describedly containing Zn compound, comprise one or more in zinc sulfate, zinc chloride, zinc oxide and trbasic zinc phosphate.
The present invention also provides a kind of Cadmium Pollution in Soils restorative procedure, and step is: in polluted soil, use described in claim 1-7 any one for administering the Multifunctional combined cooker agent of cadmium pollution soil, amount of application is 200～500 kgs/acre.
Compared with prior art, beneficial effect of the present invention is:
Compared with prior art, beneficial effect of the present invention is:
1, the present invention adopts the compound repair mode of cadmium passivator, antagonist and soil conditioner, can avoid when restoring cadmium polluted serious soil, as adopt single passivator to be difficult to reach the standard of repairing application, and need to add the defect of a large amount of passivator, prevented that a large amount of single passivator from affecting excessive defect to soil pH.
2, the present invention can rationally utilize part trade waste, can reduce the expense of trade waste processing, the utilization rate of raising material, can bring larger economic benefit.
3, adopt compound cadmium repair mode, can reduce the content of cadmium in plant, for the plantation of the normal agricultural product of cadmium content provides a kind of effective, feasible and economic means.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but not as a limitation of the invention.
1, the inorganic cadmium passivator adopting in embodiment is:
Red mud (pH is 11.1) is bought from Zibo City, Shandong Province Shandong Aluminium Industry Co., Ltd, at 105 ℃, red mud sample is dried 24 hours, then crosses 1mm sieve rear standby.
Zeolite is bought from Tianjin tongue water-purifying material Science and Technology Ltd., and specification is proportion 1.2-1.4g/cm
3, clay content≤1.0 % by weight, moisture≤1.5 % by weight.
2, the organic cadmium passivator adopting in embodiment is:
Rape stalk is taken from Zhejiang Jiaxing experiment station, at 70 ℃, dries to constant weight, crosses 1mm sieve rear standby.
Chinese cabbage plant residue is taken from Jinghai experiment station, at 70 ℃, dries to constant weight, crosses 1mm sieve rear standby.
Garlic bolt plant residue is taken from the fresh garlic bolt plant residue that station is tested in Chinese Academy of Agricultural Sciences Changping, pulverize for length standby after being less than 5 centimetres.
3, in embodiment, zinc compound used is the white vitriol that purity is greater than 99 % by weight.
Embodiment 1
For administering the Multifunctional combined cooker agent prescription of cadmium pollution soil, combine as follows:
T1 red mud+rape stalk+zinc sulfate; Weight ratio 1:0.5:0.02.
T2 red mud+Chinese cabbage plant residue+zinc sulfate; Weight ratio 1:1:0.01.
T3 red mud+garlic bolt plant residue+zinc sulfate; Weight ratio 1:0.8:0.004.
T4 zeolite+rape stalk+zinc sulfate; Weight ratio 1:0.6:0.008～0.02.
T5 zeolite+Chinese cabbage plant residue+zinc sulfate; Weight ratio 1:0.8:0.02.
T6 zeolite+garlic bolt plant residue+zinc sulfate; Weight ratio 1:0.5:0.015.
The present embodiment soil used is to take from the brown moisture soil that station is tested in Chinese Academy of Agricultural Sciences Changping, crosses 2mm sieve.Artificial setting cadmium pollution grade is 2mg.kg
-1cd, balance is cultivated after aging approximately 30 days standby.
The spinach that choice plant species Cd accumulation ability is high (Spinacia oleracea L.cv.Huabo No.1).Spinach (Spinacia oleracea L.cv.Huabo No.1) is in sowing in April, and spinach Cultivate administration method manages routinely.The amount of application of Multifunctional combined cooker agent is 400k kg/acre.
Plant to be planted grew to after the maturity period, and results edible part, as test sample, first rinses with running water, then used deionized water rinsing 3 times, finally with paper handkerchief, the water of sample surfaces was blotted.Weigh after all test sample fresh weights, it is all placed on to 70 ℃ and in baking oven, dries to constant weight, then claim dry weight.Test sample after drying is shredded to the rear plant pulverizer (Retsch-grinder, Type:0.5mm) of using and pulverize, the test sample 0.5g weighing after pulverizing puts into digest tube, adds 5ml red fuming nitric acid (RFNA) (weight percent concentration 98%), soaked overnight; Put into 90 ℃ of 30min → 140 of digesting ℃ 30min → 180 ℃ 1h → cooling → 1ml HClO
4(weight percent concentration 30%) → 160 ℃ of 20min → 180 ℃ 2h → cooling rear ultra-pure water constant volumes of using.The determining instrument of Cd and Zn is ICP-MS(inductively coupled plasma mass spectrometry).
Each is processed 4 of repetitions is set.
Embodiment 1 result of the test
Embodiment 2
Embodiment 2 material therefors
The present embodiment soil used, for taking from Ling County, Dezhou, Shandong calcareous (pH8.9) soil, is crossed 2mm sieve.Added Cadmium (CdSO is added in each community (2 * 2m)
4), concentration is 1.5mg/kg.Each community topsoil soils (0～20cm) is taken out to (about 1t), put into container and spray CdSO
4solution fully mixes and then is backfilling into community, and balance starts after 2 months to test.
Passivator or passivator combination used in the present embodiment are in the same manner as in Example 1.
Test plant is tobacco, chooses the tobacco seedling growing fine and transplants, and each community is planted 2 ，Mei ridges, ridge and transplanted 4 cigarette seedlings.Before plantation, application in the planting hole enters in soil, and amount of nitrogen is every mu of 4kg purity nitrogen, and according to nitrogen: the ratio of phosphorus: potassium=1:1:2 applies phosphorus, potash fertilizer.The field daily management of cigarette seedling is conventional treatment.The amount of application of Multifunctional combined cooker agent is 300k kg/acre.
The assay method of Cd content
During results, in each community, take middle part blade, weigh respectively fresh weight, clean, complete, dry, weigh dry weight after taking back laboratory.Sample takes 0.5000g in digestion tube after all pulverizing, and adds 6mL red fuming nitric acid (RFNA) (top grade is pure) and 2mL hydrogen peroxide (top grade is pure) to carry out micro-wave digestion.Digestion solution is caught up with acid, filters constant volume.In digestion solution Cd for concentration Inductively coupled plasma mass spectrometry (ICP-MS, Agilent7500a, Agilent Technologies Co.Ltd., USA) measure.
Each is processed 4 of repetitions is set.
Embodiment 2 result of the tests
Above embodiment is only exemplary embodiment of the present invention, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the present invention in essence of the present invention and protection domain, this modification or be equal to replacement and also should be considered as dropping in protection scope of the present invention.
Claims (8)
1. for administering a Multifunctional combined cooker agent for cadmium pollution soil, it is characterized in that, comprising: the inorganic passivator of soil heavy metal cadmium, organic passivates and cadmium antagonist.
2. according to claim 1ly for administering the Multifunctional combined cooker agent of cadmium pollution soil, it is characterized in that, the weight proportion of described inorganic passivator, organic passivates and cadmium antagonist is 1:0.5～1:0.004～0.02.
3. according to claim 1ly for administering the Multifunctional combined cooker agent of cadmium pollution soil, it is characterized in that, described inorganic passivator is selected from red mud, hydroxyapatite, bentonite, zeolite or dolomite; Described organic passivates comprises the residual body of crucifer or the residual body of liliaceous plant.
4. according to claim 3 for administering the Multifunctional combined cooker agent of cadmium pollution soil, it is characterized in that, the residual body of described crucifer is Chinese cabbage plant residue, rape plant residue, leaf mustard plant residue or the residual body of brassica oleracea plants, and described liliaceous plant body is garlic plant residue, green onion plant residue or leek plant residue.
5. according to claim 4ly for administering the Multifunctional combined cooker agent of cadmium pollution soil, it is characterized in that, the residual body of described crucifer or the residual body of liliaceous plant are that the fresh residual body of plant, the air-dry residual body of plant or plant are dried residual body.
6. according to claim 1ly for administering the Multifunctional combined cooker agent of cadmium pollution soil, it is characterized in that, described cadmium antagonist is the compound containing Zn, Ca or Fe.
7. according to claim 6ly for administering the Multifunctional combined cooker agent of cadmium pollution soil, it is characterized in that, describedly containing Zn compound, comprise one or more in zinc sulfate, zinc chloride, zinc oxide and trbasic zinc phosphate.
8. Cadmium Pollution in Soils restorative procedure, is characterized in that, in polluted soil, use described in claim 1-7 any one for administering the Multifunctional combined cooker agent of cadmium pollution soil, amount of application is 200～500 kgs/acre.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834412A (en) * | 2014-03-18 | 2014-06-04 | 四川大学 | Ectopic passivating technology for multiple heavy metals like cadmium, lead and chromium in soil |
| CN103834411A (en) * | 2014-03-18 | 2014-06-04 | 四川大学 | Preparation method of organic/inorganic composite passivator for reducing activity of heavy metal Cd in farmland soil |
| CN104003815A (en) * | 2014-06-18 | 2014-08-27 | 西南大学 | Leaf surface control agent for vegetables polluted by heavy metal, preparation method thereof and use method thereof |
| CN104056849A (en) * | 2014-04-28 | 2014-09-24 | 杭州师范大学 | Method for adsorbing and treating heavy metal cadmium in soil |
| CN106281336A (en) * | 2015-05-14 | 2017-01-04 | 北京市农林科学院 | Heavy metal passivation compositions and application thereof |
| CN106424115A (en) * | 2016-08-31 | 2017-02-22 | 湖南现代环境科技股份有限公司 | In-situ passivation remediation method for cadmium polluted rice soil |
| CN107090295A (en) * | 2016-02-18 | 2017-08-25 | 亿利生态修复股份有限公司 | A kind of passivator for reducing agricultural land soil available heavy metal content and preparation method and application |
| CN107216226A (en) * | 2017-06-30 | 2017-09-29 | 四川省地质调查院 | A kind of composition and its application method, purposes for being used to nurse one's health cadmium pollution selenium-rich soil |
| CN107311791A (en) * | 2016-11-29 | 2017-11-03 | 南京索益盟环保科技有限公司 | A kind of preparation of environment-friendly type farmland soil heavy metals passivator and its application method |
| CN107384407A (en) * | 2017-08-01 | 2017-11-24 | 中国环境科学研究院 | A kind of cadmium pollution paddy soil passivator and its application |
| CN107377600A (en) * | 2017-07-05 | 2017-11-24 | 中南林业科技大学 | For repairing the efficient conditioner and its application process of cadmium arsenic combined contamination soil |
| CN107603633A (en) * | 2017-09-08 | 2018-01-19 | 广西大学 | A kind of cadmium pollution soil organo-mineral complexing passivator and its application method |
| CN107716534A (en) * | 2017-10-20 | 2018-02-23 | 煜环环境科技有限公司 | Method for farmland soil heavy metals resistance control |
| CN109762573A (en) * | 2019-02-18 | 2019-05-17 | 江西夏氏春秋环境股份有限公司 | A kind of agricultural land soil microorganism-compound renovation agent of inorganic matter and preparation method thereof |
| CN109971482A (en) * | 2019-04-03 | 2019-07-05 | 河南清水源科技股份有限公司 | A kind of composite conditioner and preparation method thereof suitable for basic soil winter wheat cadmium pollution |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834411A (en) * | 2014-03-18 | 2014-06-04 | 四川大学 | Preparation method of organic/inorganic composite passivator for reducing activity of heavy metal Cd in farmland soil |
| CN103834412A (en) * | 2014-03-18 | 2014-06-04 | 四川大学 | Ectopic passivating technology for multiple heavy metals like cadmium, lead and chromium in soil |
| CN104056849A (en) * | 2014-04-28 | 2014-09-24 | 杭州师范大学 | Method for adsorbing and treating heavy metal cadmium in soil |
| CN104056849B (en) * | 2014-04-28 | 2015-11-18 | 杭州师范大学 | A kind of method of adsorption treatment heavy metal in soil cadmium |
| CN104003815A (en) * | 2014-06-18 | 2014-08-27 | 西南大学 | Leaf surface control agent for vegetables polluted by heavy metal, preparation method thereof and use method thereof |
| CN106281336A (en) * | 2015-05-14 | 2017-01-04 | 北京市农林科学院 | Heavy metal passivation compositions and application thereof |
| CN107090295A (en) * | 2016-02-18 | 2017-08-25 | 亿利生态修复股份有限公司 | A kind of passivator for reducing agricultural land soil available heavy metal content and preparation method and application |
| CN106424115A (en) * | 2016-08-31 | 2017-02-22 | 湖南现代环境科技股份有限公司 | In-situ passivation remediation method for cadmium polluted rice soil |
| CN107311791A (en) * | 2016-11-29 | 2017-11-03 | 南京索益盟环保科技有限公司 | A kind of preparation of environment-friendly type farmland soil heavy metals passivator and its application method |
| CN107216226A (en) * | 2017-06-30 | 2017-09-29 | 四川省地质调查院 | A kind of composition and its application method, purposes for being used to nurse one's health cadmium pollution selenium-rich soil |
| CN107377600A (en) * | 2017-07-05 | 2017-11-24 | 中南林业科技大学 | For repairing the efficient conditioner and its application process of cadmium arsenic combined contamination soil |
| CN107384407A (en) * | 2017-08-01 | 2017-11-24 | 中国环境科学研究院 | A kind of cadmium pollution paddy soil passivator and its application |
| CN107603633A (en) * | 2017-09-08 | 2018-01-19 | 广西大学 | A kind of cadmium pollution soil organo-mineral complexing passivator and its application method |
| CN107716534A (en) * | 2017-10-20 | 2018-02-23 | 煜环环境科技有限公司 | Method for farmland soil heavy metals resistance control |
| CN109762573A (en) * | 2019-02-18 | 2019-05-17 | 江西夏氏春秋环境股份有限公司 | A kind of agricultural land soil microorganism-compound renovation agent of inorganic matter and preparation method thereof |
| CN109971482A (en) * | 2019-04-03 | 2019-07-05 | 河南清水源科技股份有限公司 | A kind of composite conditioner and preparation method thereof suitable for basic soil winter wheat cadmium pollution |
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Application publication date: 20140212 |