CN105170618A - Method for remediating heavy metal contaminated soil through cooperation of activating agents and plants - Google Patents
Method for remediating heavy metal contaminated soil through cooperation of activating agents and plants Download PDFInfo
- Publication number
- CN105170618A CN105170618A CN201510634951.9A CN201510634951A CN105170618A CN 105170618 A CN105170618 A CN 105170618A CN 201510634951 A CN201510634951 A CN 201510634951A CN 105170618 A CN105170618 A CN 105170618A
- Authority
- CN
- China
- Prior art keywords
- soil
- activator
- heavy metal
- castor
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a method for remediating heavy metal contaminated soil through cooperation of activating agents and plants. The method comprises the following steps that (1) the activating agents are added into the heavy metal contaminated soil, and the soil is evenly turned over to be activated for 10-20 days; (2) castor-oil plants are planted in the activated soil for 1-2 periods, and each period is one year; (3) the castor-oil plants in the step (2) are wholly removed from the soil, the activating agents are added, and the soil is activated for 10-20 days; (4) mulberries are planted in the soil activated in the step (3) for 2-3 periods, and each period is one year; (5) heavy metal in the castor-oil plants and the mulberries in the step (2) and the step (3) are recovered; and (6) the step (1) to the step (5) are repeated cyclically until the heavy metal content in the soil meets the standard. By means of the method, the heavy metal contaminated soil can be remediated to the secondary standard after one cycle, the remediating time is short, the environment is protected, and remediation is efficient.
Description
Technical field
The present invention relates to contaminated soil and administer field, particularly the method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by a kind of activator.
Background technology
Soil is the main natural resources that the mankind depend on for existence, is also the chief component of ecological environment.Along with the fast development of industrial or agricultural, the discharge of the industry discarded objects such as excessive use chemical fertilizer, agricultural chemicals and mining, smelting, plating, chemical industry and the problem of the heavy metal pollution of soil caused are increasingly sharpened.Accumulation of heavy metals in soil can produce soil and plant to certain degree and poison, according to according to a preliminary estimate, the grain drop in production amount that China causes because of heavy metal pollution is every year up to more than 1,000 ten thousand tons, grain contaminated by heavy metals every year also reaches 1,200 ten thousand tons, contaminated by heavy metals agricultural product are enriched in human body and animal body with various countries' food chain, and entail dangers to poisons the health and lives of the mankind.
Current improvement heavy metal pollution of soil mainly adopts physico-chemical process and plant restoration method, and according to its mechanism and mechanism, employed physico-chemical techniques mainly comprises chemical curing method, soil washing and electrochemical rehabilitation method; Phytoremediation mainly comprises phytostabilization, phytovolatilization method and plant extraction method.Use chemical curing processes to be temporarily fixed in soil by heavy metal, reduce heavy metal and enter human body by plant, but can not thoroughly heavy metal be disposed from soil, also there is hidden danger; Soil washing can reduce the Phyto-availability of heavy metal, but can make the nutritional labeling of large losses in soil simultaneously, uses the method for chemical leaching may cause acidifying or the alkalization of soil in addition simultaneously; And the cost compare of electrochemical rehabilitation is high, implementation condition is harsher; And adopt the method for phytoremediation to be by botanical system absorption, accumulation, to volatilize and removed from soil by heavy metal thus reduce heavy metal pollution, the cost compare of the method is cheap, and environmental protection, but the suction-operated of plant heavy metal has a saturation capacity, and plant absorption and accumulation can only be in the heavy metal of Absorbable rod state, how the methods combining of chemical method and phytoremediation is got up, free from environmental pollution, and the accumulation of plant to heavy metal in soil can be increased, be a problem demanding prompt solution.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of cost low, pollute less, can soil quality be improved and the method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by the activator of heavy metal efficiently in removing soil.
For reaching above-mentioned technical purpose, the technical solution used in the present invention is:
A method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator, it is characterized in that, comprises the following steps:
(1) in heavy-metal contaminated soil, add activator, turn over evenly, activate 10 ~ 20 days;
(2) castor-oil plant in 1 ~ 2 cycle of plantation in soil after activation, with 1 year for one-period;
(3) the castor-oil plant entirety from soil in step (2) is removed, add activator, activate 10 ~ 20 days;
(4) mulberry tree in 2 ~ 3 cycles of plantation in the soil after activating in step (3), with 1 year for one-period;
(5) castor-oil plant in step (2) and step (3) and the heavy metal in mulberry tree are reclaimed;
(6) circulation step (1) ~ (5), until heavy metal in soil content is up to standard;
Described step (1) and the middle activator of step (3) comprise the raw material of following weight portion: fruit/vegetable waste 30 ~ 50 parts, weathered coal 30 ~ 50 parts, fertilizer 20 ~ 30 parts, 5 ~ 10 parts, urea, 5 ~ 10 parts, ammonium phosphate and potassium phosphate 5 ~ 10 parts.
Preferably, the addition 15 ~ 20g/m of described step (1) and the middle activator of step (3)
2.
Preferably, the preparation method of described activator comprises the following steps:
Taking fruit/vegetable waste and weathered coal, is 20 ~ 30 DEG C in temperature, and moisture is under the condition of 50 ~ 60% after retting 20 ~ 30d, being dried to water content is 10% ~ 15%, cross 30 ~ 50 mesh sieves after pulverizing, mix with fertilizer, urea, ammonium phosphate and potassium phosphate, namely prepare activator.
Preferably, described fertilizer is the fertilizer that feces of livestock and poultry is made through retting.
Preferably, the method for described plantation castor-oil plant is seedling plantation, and top layer 20 ~ 35cm kind of being placed into the soil by seedling is planted, and spacing in the rows is 30 ~ 40cm, and line-spacing is 50 ~ 60cm.
Preferably, the method for described plantation mulberry tree is seedling plantation, and the seedling of highly >=40cm, place into the soil top layer 25 ~ 35cm, spacing in the rows 15 ~ 25cm, line-spacing 80 ~ 100cm.
The invention has the beneficial effects as follows:
The present invention adopts activator to work in coordination with the method for Phytoremediation of Soils Contaminated by Heavy Metals, first use activator by the heavy metallic activation in soil, then serike castor-oil plant and mulberry tree, absorbed by the heavy metal of the Absorbable rod state activated in soil by castor-oil plant and mulberry tree, transferred on castor-oil plant and mulberry tree by heavy metal in soil, removing castor-oil plant and mulberry tree can by the heavy metal removing in soil.
After heavy metal enters soil, by various reactions such as dissolving, precipitation, cohesion, Absorptive complex wave, form different chemical forms, and show different activity, the content of the soda acid character of soil, redox property, colloid and the condition such as composition and weather, the hydrology, biology are the important factor in order of heavy metal in soil existing forms, therefore need the heavy metal that activator comes in activating soil, and the physicochemical property of soil is improved.The activator used in the present invention mixes with fertilizer, urea, ammonium phosphate and potassium phosphate after adopting fruit/vegetable waste and weathered coal retting, fruit/vegetable waste is the discarded object of the fruits and vegetables used in daily life, as the pericarp of apple, lemon, grape and orange etc. and the discarded object of vegetables, containing a large amount of organic matters in these fruit/vegetable waste, the element such as cellulose and N, P, K, and be nontoxic; Then containing a large amount of humic acids in weathered coal; After fruit/vegetable waste and the fermentation of weathered coal retting, the humic acid in weathered coal will be activated, and humic acid is the conditioner of soil, can improve the physicochemical property of soil, increases soil and fats up, the metallic element in activating soil; And containing a large amount of organic acid in fruit/vegetable waste after fermentation, and organic acid can be dissociated into proton and low molecular organic acid in soil, proton can cause the change of pH value in environment and oxidation-reduction potential, promotes the weathering course of dissolution of heavy metal in soil host mineral.And the fertilizer used in activator is the fertilizer that feces of livestock and poultry is made through retting, containing multiple organic acid, peptide class and the abundant nutrient comprising nitrogen, phosphorus, potassium in this fertilizer, full nutrition can not only be provided for crops, and fertilizer efficiency is long, can increase and upgrade the soil organism, promote microbial reproduction, improve physicochemical property and the biologically active of soil; And urea, ammonium phosphate and potassium phosphate can increase the fertility of soil, the nutrition of balanced soil, the activator therefore used in the present invention can improve the quality of soil greatly, and accelerates the release of heavy metal in soil, improves the efficiency of phytoremediation.
The adaptive capacity of mulberry tree is stronger, antiacid alkali, barren-resistant, can grow in the scope of pH4.5 ~ 9.0, and the heavy metal of mulberry tree has very strong enrichment.And castor-oil plant is as important industrial crops, plantation difficulty is low, be applicable to establishing in large scale, effectively prevent pollutant as non-consumption plant for rehabilitating soil and again enter food chain, gained castor seeds can manufacture oil, and castor-oil plant growth is very fast, biomass is comparatively large, and heavy metal has very strong enrichment.
Therefore, the present invention adopt activator to work in coordination with beneficial effect that plant carrys out the method for restoration of soil polluted by heavy metal is mainly reflected in:
(1) in the activator that uses of the present invention containing a large amount of organic acid, humic acid, and abundant nutrient, can heavy metal in activating soil, increases and upgrades the soil organism, promoting the breeding of microorganism, improve physicochemical property and the soil activation of soil;
(2) mode that the present invention adopts castor-oil plant and mulberry tree to plant in turn carrys out the heavy metal in rehabilitating soil, because castor-oil plant is different to the enrichment of different heavy metals with mulberry tree, and the mode of planting in turn can maintain the nutrient balance of soil, upgrade the organic matter in soil, reduce disease and pest, the heavy metal in soil can be removed efficiently, can soil be improved again;
(3) reclaim the castor-oil plant and mulberry tree that remove soil, can isolate heavy metal wherein by chemical method after high temperature, heavy metal can recycle, and namely solves pollution problem and again saves resource.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Experimental Area is selected from one piece of arable land contaminated by heavy metals near mining area, and pollutant comprises Cd, Hg, Cu, Pb, Zn.This arable land is divided into 7 pieces of regions, every block region 20 × 20m, respectively label 1#, 2#, 3#, 4#, 5#, 6#, 7#, every block region arranges 5 sampled points, gathers total 35 of the soil sample of 0 ~ 20cm in heavy-metal contaminated soil, after mixing, according to the method listed in GB5085.3-2007 " hazardous waste judging standard leaching characteristic identification ", the content of beary metal in soil is measured.After testing, in the soil of this heavy metal pollution, the concentration of Cd, Hg, Cu, Pb, Zn is respectively: 80.9mg/kg, 30.9mg/kg, 400.8mg/kg, 600.7mg/kg, 1000.5mg/kg, and pH value is 6.0.
According to the environmental quality second level standard value of soil inorganic pollutant in GB15618-2008 " national standard of soil environment quality ", Cd, Hg, Cu during agricultural pH5.5 ~ 6.5, nonirrigated farmland, Pb, the secondary standard value of Zn is respectively 0.3,0.35,50,80,200mg/kg, therefore, this block is ploughed and be there is more serious heavy metal pollution.
Embodiment 1
A method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator, comprises the following steps:
(1) in 1# region, 6kg activator is added, Soil tillage is even, activate 10 days;
(2) upper soll layer 20cm kind is after activation planted 1 cycle and is led to castor No. 6 castor-oil plant seedling, and implantation time is mid-March, and spacing in the rows is 30cm, and line-spacing is 50cm, irregular soil moisture conservation of watering, and is 1 cycle with 1 year;
(3) castor-oil plant entirety from soil of the plantation in step (2) is removed, in soil, add the activator of 8kg, Soil tillage is even, activate 20 days;
(4) then in step (3) activation after 3 cycles of upper soll layer 25cm place's plantation educate 711 mulberry saplings, implantation time is the mulberry saplings of late Febuary, selection >=40cm, spacing in the rows 15cm, line-spacing 80cm, with 1 year for one-period;
(5) by these plant samples of root, stem and leaf carbonization under the condition of 300 DEG C of the castor-oil plant in step (2) and step (3) and mulberry tree, then the immersion 2h of the HCl of 0.1mol/L is used, from HCl solution, reclaim heavy metal afterwards, and the plant sample of carbonization can as Fertilizer application to neutrality through distilled water washing;
(6) circulation step (1) ~ (5), until heavy metal in soil content is up to standard;
In described step (1), activator comprises the raw material of following weight portion: fruit/vegetable waste 30 parts, weathered coal 50 parts, fertilizer 20 parts, 5 parts, urea, 10 parts, ammonium phosphate and potassium phosphate 5 parts.
Wherein the preparation method of activator comprises the following steps:
Take the fruit/vegetable waste of 30 weight portions and the weathered coal of 50 weight portions, it is 20 DEG C in temperature, moisture is retting after 20 days under the condition of 50%, being dried to water content is 15%, crosses 50 mesh sieves, with the fertilizer of 20 weight portions after pulverizing, 5 parts by weight of urea, 10 parts by weight of phosphoric acid ammoniums, 5 parts by weight of phosphoric acid potassium mix, and namely prepare activator.
Wherein the preparation method of fertilizer is: by chicken manure, pig manure and cow dung, and at 20 ~ 30 DEG C, moisture is retting 20 days under 40% condition, and being dried to water content is 15%, crosses 50 mesh sieves, namely prepare fertilizer after pulverizing.
After circulation primary, the content detecting Cd, Hg, Cu, Pb, Zn in soil is respectively 0.28mg/kg, 0.32mg/kg, 29.8mg/kg, 40.8mg/kg, 70.2mg/kg, and pH value is 7.2, and the content of the heavy metal in soil reaches soil environment quality second level standard value.
Embodiment 2
A method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator, comprises the following steps:
(1) 6.4kg activator is added to 2# region, Soil tillage is even, activate 13 days;
(2) upper soll layer 25cm kind is after activation planted 2 cycles and is led to castor No. 5 castor-oil plant seedling, and implantation time is mid-March, and spacing in the rows is 34cm, and line-spacing is 60cm, irregular soil moisture conservation of watering, and is 1 cycle with 1 year;
(3) castor-oil plant entirety from soil of the plantation in step (2) is removed, in soil, add the activator of 7.2kg, Soil tillage is even, activate 17 days;
(4) farming and sericulture No. 10 mulberry saplings in 2 cycles of upper soll layer 30cm place's plantation after then activating in step (3), implantation time is the mulberry saplings of late Febuary, selection >=40cm, spacing in the rows 20cm, line-spacing 90cm, with 1 year for one-period;
(5) by these plant samples of root, stem and leaf carbonization under the condition of 500 DEG C of the castor-oil plant in step (2) and step (3) and mulberry tree, then the leaching 1h of the HCl of 0.5mol/L is used, from HCl solution, reclaim heavy metal afterwards, and the plant sample of carbonization can as Fertilizer application to neutrality through distilled water washing;
(6) circulation step (1) ~ (5), until heavy metal in soil content is up to standard;
In described step (1), activator comprises the raw material of following weight portion: fruit/vegetable waste 35 parts, weathered coal 40 parts, fertilizer 25 parts, 7 parts, urea, 8 parts, ammonium phosphate and potassium phosphate 6 parts.
Wherein the preparation method of activator comprises the following steps:
Take the fruit/vegetable waste of 35 weight portions and the weathered coal of 40 weight portions, it is 30 DEG C in temperature, moisture is retting after 24 days under the condition of 55%, being dried to water content is 12%, 35 mesh sieves are crossed after pulverizing, with the fertilizer of 25 weight portions, 7 parts by weight of urea, 8 parts by weight of phosphoric acid ammoniums and 6 parts by weight of phosphoric acid potassium mix, and namely prepare activator.
Wherein the preparation method of fertilizer is: by chicken manure, pig manure and cow dung, and at 20 ~ 30 DEG C, moisture is retting 25 days under 45% condition, and being dried to water content is 12%, crosses 35 mesh sieves, namely prepare fertilizer after pulverizing.
After circulation primary, the content detecting Cd, Hg, Cu, Pb, Zn in soil is respectively 0.124mg/kg, 0.29mg/kg, 26.7mg/kg, 20.8mg/kg, 50.8mg/kg, and pH value is 7.0, and the content of the heavy metal in soil reaches soil environment quality second level standard value.
Embodiment 3
A method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator, comprises the following steps:
(1) 7.2kg activator is added to 3# region, Soil tillage is even, activate 16 days;
(2) upper soll layer 30cm kind after activation plants 1 cycle oil castor No. 4 castor-oil plant seedling, and implantation time is mid-March, and spacing in the rows is 36cm, and line-spacing is 54cm, irregular soil moisture conservation of watering, and is 1 cycle with 1 year;
(3) castor-oil plant entirety from soil of the plantation in step (2) is removed, in soil, add the activator of 6.4kg, Soil tillage is even, activate 14 days;
(4) farming and sericulture No. 12 mulberry saplings in 3 cycles of upper soll layer 35cm place's plantation after then activating in step (3), implantation time is late Febuary, selects the mulberry saplings higher than 40cm, and spacing in the rows is 25cm, and line-spacing is 95cm, with 1 year for one-period;
(5) by these plant samples of root, stem and leaf carbonization under the condition of 400 DEG C of the castor-oil plant in step (2) and step (3) and mulberry tree, the HNO of 0.5mol/L is then used
3leaching 1h, afterwards from HNO
3reclaim heavy metal in solution, and the plant sample of carbonization can as Fertilizer application to neutrality through distilled water washing;
(6) circulation step (1) ~ (5), until heavy metal in soil content is up to standard;
In described step (1), activator comprises the raw material of following weight portion: fruit/vegetable waste 45 parts, weathered coal 30 parts, fertilizer 28 parts, 9 parts, urea, ammonium phosphate 6 weight portion and potassium phosphate 8 parts.
Wherein the preparation method of activator comprises the following steps:
Take the fruit/vegetable waste of 45 weight portions and the weathered coal of 30 weight portions, it is 25 DEG C in temperature, moisture is retting after 28 days under the condition of 50%, being dried to water content is 14%, 45 mesh sieves are crossed after pulverizing, with the fertilizer of 28 weight portions, 9 parts by weight of urea, 6 parts by weight of phosphoric acid ammoniums and 8 parts by weight of phosphoric acid potassium mix, and namely prepare activator.
Wherein the preparation method of fertilizer is: by chicken manure, pig manure and cow dung, and at 20 ~ 30 DEG C, moisture is retting 28 days under 48% condition, and being dried to water content is 13%, crosses 45 mesh sieves, namely prepare fertilizer after pulverizing.
After circulation primary, the content detecting Cd, Hg, Cu, Pb, Zn in soil is respectively 0.26mg/kg, 0.34mg/kg, 28.7mg/kg, 25.6mg/kg, 56.8mg/kg, and pH value is 6.9, and the content of the heavy metal in soil reaches soil environment quality second level standard value.
Embodiment 4
A method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator, comprises the following steps:
(1) 8kg activator is added to 4# region, Soil tillage is even, activate 20 days;
(2) upper soll layer 35cm kind after activation plants 2 cycles wise man's castors No. three castor-oil plant seedling, and implantation time is mid-March, spacing in the rows 40cm, line-spacing 58cm, irregular soil moisture conservation of watering, and is 1 cycle with 1 year;
(3) castor-oil plant entirety from soil of the plantation in step (2) is removed, in soil, add the activator of 6kg, Soil tillage is even, activate 10 days;
(4) farming and sericulture No. 14 mulberry saplings in 2 cycles of upper soll layer 30cm place's plantation after then activating in step (3), implantation time is late Febuary, selects the mulberry saplings higher than 40cm, and spacing in the rows is 18cm, and line-spacing is 100cm, with 1 year for one-period;
(5) by these plant samples of root, stem and leaf carbonization under the condition of 350 DEG C of the castor-oil plant in step (2) and step (4) and mulberry tree, the HNO of 0.1mol/L is then used
3leaching 2h, afterwards from HNO
3reclaim heavy metal in solution, and the plant sample of carbonization can as Fertilizer application to neutrality through distilled water washing;
(6) circulation step (1) ~ (5), until heavy metal in soil content is up to standard;
In described step (1), activator comprises the raw material of following weight portion: fruit/vegetable waste 50 parts, weathered coal 35 parts, fertilizer 30 parts, 10 parts, urea, 5 parts, ammonium phosphate and potassium phosphate 10 parts.
Wherein the preparation method of activator comprises the following steps:
Take the fruit/vegetable waste of 50 weight portions and the weathered coal of 35 weight portions, it is 28 DEG C in temperature, moisture is retting after 30 days under the condition of 60%, being dried to water content is 15%, 30 mesh sieves are crossed after pulverizing, with the fertilizer of 30 weight portions, 10 parts by weight of urea, 5 parts by weight of phosphoric acid ammoniums and 10 parts by weight of phosphoric acid potassium mix, and namely prepare activator.
Wherein the preparation method of fertilizer is: by chicken manure, pig manure and cow dung, and at 20 ~ 30 DEG C, moisture is retting 30 days under 50% condition, and being dried to water content is 10%, crosses 30 mesh sieves, namely prepare fertilizer after pulverizing.
After circulation primary, the content detecting Cd, Hg, Cu, Pb, Zn in soil is respectively 0.294mg/kg, 0.31mg/kg, 27.4mg/kg, 28.9mg/kg, 58.4mg/kg, and pH value is 6.8, and the content of the heavy metal in soil reaches environmental quality second level standard value.
Comparative example 1
Adopt the condition identical with embodiment 2 at the soil of 5# region repairing heavy metal pollution, difference is not add activator, plants farming and sericulture No. 10 mulberry treies in 2 cycles after logical castor No. 5 castor-oil plants in 2 cycles of plantation; 4 all after dates detect the content of beary metal in soil and pH value.
Comparative example 2
Adopt the condition identical with embodiment 2 at the soil of 6# region repairing heavy metal pollution, difference is the mode not adopting castor-oil plant and mulberry tree to plant in turn, but plants logical castor No. 5 castor-oil plants in 4 cycles continuously; 4 all after dates detect the content of beary metal in soil.
Comparative example 3
Adopt the condition identical with embodiment 2 at the soil of 6# region repairing heavy metal pollution, difference is the mode not adopting castor-oil plant and mulberry tree crop rotation, but plants farming and sericulture No. 10 mulberry treies in 4 cycles continuously; 4 all after dates detect the content of beary metal in soil.
The repairing effect of heavy-metal contaminated soil
Evaluate from these two aspects of final content of Cd, Hg, Cu, Pb, Zn the pH value and soil of the rear soil of reparation the repairing effect of the embodiment of the present invention 1 ~ 4 and comparative example 1 ~ 3, testing result is as shown in table 1.
Table 1 content of beary metal and pH testing result
| pH | Cd | Hg | Cu | Pb | Zn | |
| Soil before repairing | 6.0 | 80.9 | 30.9 | 400.8 | 600.7 | 1000.5 |
| Embodiment 1 | 7.2 | 0.28 | 0.32 | 29.8 | 40.8 | 70.2 |
| Embodiment 2 | 7.0 | 0.124 | 0.29 | 26.7 | 20.8 | 50.8 |
| Embodiment 3 | 6.9 | 0.26 | 0.34 | 28.7 | 25.6 | 56.8 |
| Embodiment 4 | 6.8 | 0.294 | 0.31 | 27.4 | 28.9 | 58.4 |
| Comparative example 1 | 6.3 | 19.6 | 10.4 | 60.1 | 76.5 | 167.3 |
| Comparative example 2 | 6.6 | 0.29 | 4.9 | 45.2 | 90.2 | 150.4 |
| Comparative example 3 | 6.7 | 5.6 | 3.2 | 48.7 | 87.6 | 120.6 |
As can be seen from Table 1, mode heavy metal contaminated soil that castor-oil plant and mulberry tree plant in turn is repaired to adopt activator to work in coordination with in embodiment 1 ~ 4, after repairing, the pH value of soil is 6.8 ~ 7.2, according to the environmental quality second level standard value of soil inorganic pollutant in GB15618-2008 " national standard of soil environment quality ", Cd during agricultural pH6.5 ~ 7.5, nonirrigated farmland, Hg, Cu, Pb, the secondary standard value of Zn is respectively 0.45, 0.7, 100, 80, 250mg/kg, therefore, through the reparation in 4 cycles of once circulating, the content of heavy metal in soil reaches soil environment quality secondary standard.And in comparative example 1, do not use activator, through the reparation in 4 cycles of once circulating, content of beary metal in soil does not reach soil environment quality secondary standard, illustrate that activator can heavy metal in activating soil, and the physicochemical property of soil can be improved, thus promote that plant is to the accumulation of heavy metal in soil.Castor-oil plant has only been planted in comparative example 2, mulberry tree has only been planted in comparative example 3, after the reparation in 4 cycles of once circulating, content of beary metal in soil does not all reach the environmental quality secondary standard of soil, illustrate that castor-oil plant and the accumulation of mulberry tree to different heavy metal are different, need collaborative reparation, just can guarantee that the content of beary metal repaired in rear soil reaches standard.
Claims (6)
1. a method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator, it is characterized in that, comprises the following steps:
(1) in heavy-metal contaminated soil, add activator, turn over evenly, activate 10 ~ 20 days;
(2) castor-oil plant in 1 ~ 2 cycle of plantation in soil after activation, with 1 year for one-period;
(3) the castor-oil plant entirety from soil in step (2) is removed, add activator, activate 10 ~ 20 days;
(4) mulberry tree in 2 ~ 3 cycles of plantation in the soil after activating in step (3), with 1 year for one-period;
(5) castor-oil plant in step (2) and step (3) and the heavy metal in mulberry tree are reclaimed;
(6) circulation step (1) ~ (5), until heavy metal in soil content is up to standard;
Described step (1) and the middle activator of step (3) comprise the raw material of following weight portion: fruit/vegetable waste 30 ~ 50 parts, weathered coal 30 ~ 50 parts, fertilizer 20 ~ 30 parts, 5 ~ 10 parts, urea, 5 ~ 10 parts, ammonium phosphate and potassium phosphate 5 ~ 10 parts.
2. the method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator according to claim 1, it is characterized in that, the addition 15 ~ 20g/m of described step (1) and the middle activator of step (3)
2.
3. the method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator according to claim 1, it is characterized in that, the preparation method of described activator comprises the following steps:
Taking fruit/vegetable waste and weathered coal, is 20 ~ 30 DEG C in temperature, and moisture is under the condition of 50 ~ 60% after retting 20 ~ 30d, being dried to water content is 10% ~ 15%, cross 30 ~ 50 mesh sieves after pulverizing, mix with fertilizer, urea, ammonium phosphate and potassium phosphate, namely prepare activator.
4. the method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator according to claim 3, it is characterized in that, described fertilizer is the fertilizer that feces of livestock and poultry is made through retting.
5. the method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator according to claim 1, it is characterized in that, the method for described plantation castor-oil plant is seedling plantation, and top layer 20 ~ 35cm kind of being placed into the soil by seedling is planted, and spacing in the rows is 30 ~ 40cm, and line-spacing is 50 ~ 60cm.
6. the method for Phytoremediation of Soils Contaminated by Heavy Metals worked in coordination with by activator according to claim 1, it is characterized in that, the method for described plantation mulberry tree is seedling plantation, the seedling of highly >=40cm, place into the soil top layer 25 ~ 35cm, spacing in the rows 15 ~ 25cm, line-spacing 80 ~ 100cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634951.9A CN105170618A (en) | 2015-09-30 | 2015-09-30 | Method for remediating heavy metal contaminated soil through cooperation of activating agents and plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634951.9A CN105170618A (en) | 2015-09-30 | 2015-09-30 | Method for remediating heavy metal contaminated soil through cooperation of activating agents and plants |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105170618A true CN105170618A (en) | 2015-12-23 |
Family
ID=54893306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510634951.9A Pending CN105170618A (en) | 2015-09-30 | 2015-09-30 | Method for remediating heavy metal contaminated soil through cooperation of activating agents and plants |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105170618A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914478A (en) * | 2017-04-06 | 2017-07-04 | 中华全国供销合作总社天津再生资源研究所 | The energy-source plant restorative procedure and the modifying agent for the method for heavy-metal contaminated soil |
| CN107159691A (en) * | 2017-06-07 | 2017-09-15 | 常州中翔科技有限公司 | A kind of method of biological synergetic repairing heavy metal polluted soil of farmland |
| CN107159693A (en) * | 2017-07-14 | 2017-09-15 | 安徽省农业科学院蚕桑研究所 | A kind of plant restoration method of heavy-metal contaminated soil |
| CN107363082A (en) * | 2017-07-04 | 2017-11-21 | 王坤 | A kind of method using high biomass compatibility sorghum restoration of soil polluted by heavy metal |
| CN107520243A (en) * | 2017-08-09 | 2017-12-29 | 大连地拓环境科技有限公司 | A kind of method using bamboo willow restoration of soil polluted by heavy metal |
| CN108817069A (en) * | 2018-06-01 | 2018-11-16 | 湖南泰谷生态工程有限公司 | A kind of heavy metallic activation agent and its application in soil joint is repaired |
| CN110814003A (en) * | 2019-11-19 | 2020-02-21 | 江苏省地质调查研究院 | In-situ passivation method for fermented organic fertilizer in heavy metal polluted farmland |
| CN115572187A (en) * | 2022-08-29 | 2023-01-06 | 中昇南阳生物科技有限公司 | Microbial compound fertilizer and method for repairing heavy metal contaminated soil by using same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887457A (en) * | 2006-07-14 | 2007-01-03 | 云南省环境科学研究院 | Application and method of utilizing enriching plant in repairing lead polluted soil |
| CN101462117A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Combined reinforced method for repairing cadmium polluted soil |
| CN101722183A (en) * | 2009-11-20 | 2010-06-09 | 中山大学 | Method for improving heavy metal-polluted soil |
| KR20110088251A (en) * | 2010-01-28 | 2011-08-03 | 주식회사 해천이티에스 | Phytoremedation using ammonium sulfate |
| CN102153424A (en) * | 2011-05-17 | 2011-08-17 | 谭钧 | Novel method for preparing humic acid urea slow release fertilizer |
| CN103586270A (en) * | 2013-11-08 | 2014-02-19 | 中国科学院红壤生态实验站 | Method for restoring heavy metal contaminated soil |
| CN104307856A (en) * | 2014-10-21 | 2015-01-28 | 赵连祺 | Animal-plant comprehensive utilization and restoration method of heavy-metal polluted soil |
| CN104785514A (en) * | 2015-04-21 | 2015-07-22 | 上海大学 | Method for restoring heavy metal polluted soil with energy crop castor |
-
2015
- 2015-09-30 CN CN201510634951.9A patent/CN105170618A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1887457A (en) * | 2006-07-14 | 2007-01-03 | 云南省环境科学研究院 | Application and method of utilizing enriching plant in repairing lead polluted soil |
| CN101462117A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Combined reinforced method for repairing cadmium polluted soil |
| CN101722183A (en) * | 2009-11-20 | 2010-06-09 | 中山大学 | Method for improving heavy metal-polluted soil |
| KR20110088251A (en) * | 2010-01-28 | 2011-08-03 | 주식회사 해천이티에스 | Phytoremedation using ammonium sulfate |
| CN102153424A (en) * | 2011-05-17 | 2011-08-17 | 谭钧 | Novel method for preparing humic acid urea slow release fertilizer |
| CN103586270A (en) * | 2013-11-08 | 2014-02-19 | 中国科学院红壤生态实验站 | Method for restoring heavy metal contaminated soil |
| CN104307856A (en) * | 2014-10-21 | 2015-01-28 | 赵连祺 | Animal-plant comprehensive utilization and restoration method of heavy-metal polluted soil |
| CN104785514A (en) * | 2015-04-21 | 2015-07-22 | 上海大学 | Method for restoring heavy metal polluted soil with energy crop castor |
Non-Patent Citations (4)
| Title |
|---|
| 任秀娟等: "《植物富集效应与污染土壤植物修复技术》", 30 April 2015, 中国农业科学技术出版社 * |
| 化工部科学技术情报研究所: "《中国化肥手册 生产·流通·施用》", 31 March 1992, 南京化学工业（集团）公司 * |
| 徐宁等: "桑树修复土壤重金属污染的研究进展", 《农学学报》 * |
| 潘雨齐等: "经济作物修复重金属污染土壤的研究现状与应用前景", 《中国麻业科学》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914478A (en) * | 2017-04-06 | 2017-07-04 | 中华全国供销合作总社天津再生资源研究所 | The energy-source plant restorative procedure and the modifying agent for the method for heavy-metal contaminated soil |
| CN107159691A (en) * | 2017-06-07 | 2017-09-15 | 常州中翔科技有限公司 | A kind of method of biological synergetic repairing heavy metal polluted soil of farmland |
| CN107363082A (en) * | 2017-07-04 | 2017-11-21 | 王坤 | A kind of method using high biomass compatibility sorghum restoration of soil polluted by heavy metal |
| CN107159693A (en) * | 2017-07-14 | 2017-09-15 | 安徽省农业科学院蚕桑研究所 | A kind of plant restoration method of heavy-metal contaminated soil |
| CN107520243A (en) * | 2017-08-09 | 2017-12-29 | 大连地拓环境科技有限公司 | A kind of method using bamboo willow restoration of soil polluted by heavy metal |
| CN108817069A (en) * | 2018-06-01 | 2018-11-16 | 湖南泰谷生态工程有限公司 | A kind of heavy metallic activation agent and its application in soil joint is repaired |
| CN110814003A (en) * | 2019-11-19 | 2020-02-21 | 江苏省地质调查研究院 | In-situ passivation method for fermented organic fertilizer in heavy metal polluted farmland |
| CN115572187A (en) * | 2022-08-29 | 2023-01-06 | 中昇南阳生物科技有限公司 | Microbial compound fertilizer and method for repairing heavy metal contaminated soil by using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105170618A (en) | Method for remediating heavy metal contaminated soil through cooperation of activating agents and plants | |
| CN105170621B (en) | A kind of method of activator and microbial augmentation Phytoremediation of Soils Contaminated by Heavy Metals | |
| CN101928179B (en) | Slow release fertilizer having soil remediation function and soil contamination remediation method | |
| CN101462117B (en) | Combined reinforced method for repairing cadmium polluted soil | |
| CN102349373B (en) | Method for repairing soil polluted by heavy metal in situ by mixed planting of plant | |
| CN105170619B (en) | A method of repairing and improve heavy-metal contaminated soil | |
| Kumar et al. | Potassium humate: a potential soil conditioner and plant growth promoter | |
| CN105036851B (en) | A kind of potato dedicated liquid punching fertilising and preparation method | |
| CN105170620A (en) | Method for restoring heavy metal contaminated soil through cooperation of magnetic activated carbon and activating agent | |
| CN108856282B (en) | Composite remediation method for heavy metal contaminated farmland soil | |
| CN102358710A (en) | Ecological fertilizer, preparation method, and application of ecological fertilizer in agricultural or forestry production | |
| CN105254421B (en) | A method of handling waste dish and fermenting organism fertilizer using biotechnology | |
| CN107384426A (en) | A kind of renovation agent of cation heavy-metal contaminated soil and preparation method thereof | |
| CN104926567B (en) | A kind of preparation and its application method for improveing farmland cadmium pollution | |
| CN104355749B (en) | A kind of production method of fermentable alga fertilizer | |
| CN103238440A (en) | Method for reducing cadmium pollution risk for rape | |
| CN104262011A (en) | Method of producing watermelon liquid fertilizer by sisal hemp wastewater | |
| CN110498696A (en) | A kind of ecology organic fertilizer and preparation method thereof | |
| CN108817069A (en) | A kind of heavy metallic activation agent and its application in soil joint is repaired | |
| CN106467416A (en) | A kind of processing technology of humic acid organic water-soluble fertilizer | |
| CN105367345A (en) | Solanaceous greenhouse vegetable special-purpose nutritional compound fertilizer used for improving soil hardening, and application method thereof | |
| CN104447126B (en) | The method of domestic sludge rapid aging mud-flat soil | |
| CN105294215A (en) | Tea organic base manure | |
| CN108299035A (en) | A kind of organic base fertilizer of Rice Cropping Se-enriched bio and preparation method thereof | |
| CN104115587A (en) | Soil improvement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151223 |
|
| RJ01 | Rejection of invention patent application after publication |