CN106825014A - A kind of method for combining EDDS and reed cadmium pollution soil repair - Google Patents
A kind of method for combining EDDS and reed cadmium pollution soil repair Download PDFInfo
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- CN106825014A CN106825014A CN201710140099.9A CN201710140099A CN106825014A CN 106825014 A CN106825014 A CN 106825014A CN 201710140099 A CN201710140099 A CN 201710140099A CN 106825014 A CN106825014 A CN 106825014A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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Abstract
The invention discloses a kind of method for combining EDDS and reed cadmium pollution soil repair, methods described comprises the following steps：Step one, reed seed is seeded in cadmium pollution soil；Step 2, adds EDDS solution in reed breeding phase is to cadmium pollution soil, and the above-ground organs after reed growth and maturity are removed afterwards, continued growth, harvesting, circular treatment cadmium pollution soil after toothing；Wherein, the acid-base value of the EDDS solution of addition is identical with the acid-base value of cadmium pollution soil.It is of the invention, to overground part, to realize the purpose of the slight cadmium pollution soil of reparation to increase plant availability cadmium content, and utilize perennial energy-source plant reed root system largely to accumulate simultaneously transhipment part cadmiums using cadmium in degradable chelating agent EDDS activating soils.
Description
Technical field
The invention belongs to phytoremediation contaminated soil technical field, and in particular to one kind joint EDDS and reed
The method of cadmium pollution soil repair.
Background technology
Due to mankind's activities such as mining, smelting, fuel combustion, incineration of waste and artificially applying fertilizers so that plurality of heavy metal is entered
Enter in environment.Investigation display, cadmium pollution is the most serious in China's heavy metal pollution of soil, and point position exceeding standard rate (refers to that soil is exceeded
The quantity of point position accounts for the ratio of points for investigation position total quantity) reach 7.0%.In the rice sample of random buying, there is 10% or so
There is cadmium excessive problem.Cadmium after air, water body, food enter human body, arrange naturally in the tissue such as liver, kidney by major storage
Let out very slow, half-life period is very long, very harmful.The forties in 20th century, in the shock that Toyama County, Japan remarkable ability river basin occurs
" Itai-itai diseases " in the world exactly because cadmium pollution causes.It can be seen that, administer cadmium pollution soil very urgent.At present, heavy metal is administered
The method of contaminated soil mainly includes that engineering control method, Chemo-Therapy logos, agricultural control four kinds of logos and biological harnessing method.In recent years
The phytoremediation technology of rise belongs to biological treating method, and the technology is restrained oneself and excessive accumulaiton certain or some chemistry with plant
Element theory based on, using plant and its coexist microorganism system remove environment in pollutant an environmental improvement skill
Art.Phytoremediation is a technology for having a great attraction in waste treatment project, with controlling for physics, chemistry and microorganism
Reason method is compared, and it has the advantages that uniqueness, mainly includes：Treatment cost is low, governance process (small to environmental perturbation) in situ, control
Reason effect is permanent, can large area carry out and can purify and beautify the environment.Before suitable rehabilitation plant application the method
Carry and crucial, hyperaccumulative plant is generally wild type, and its biomass is often relatively low and harsher to environmental requirement, practical application potentiality
It is not high.Strong adaptability, biomass are high, the focus of patience and the stronger non-hyperaccumulative plant of characteristic of accumulation as current research.Reed
(Miscanthus sacchaiflorus) is the perennial C4 plants of grass family awns genus, and biomass is high, strong adaptability, power of regeneration
By force, it is a kind of important energy-source plant.Tian Runan etc. have studied the sprouting of reed seed and growth of seedling feelings under the single stress of Cu, Cd
Condition.Open outstanding person etc. and have studied copper accumulation in influence and reed body of the Cu stress to reed.Zhang etc. is cultivated since reed root-like stock,
Have studied the lower reed physiology of Cd stress, growth and internal Cd accumulation feature.Summary research understands, although reed is in biomass and weight
The performance of the aspects such as metal patience is preferable, but the extractability of its heavy metal is relatively limited.Heavy metal in soil has various depositing
In form, wherein water-soluble state and exchange state is easily absorbed by plants, but the presence of which ratio is generally relatively low, can be lured by chelating
Lead recovery technique and change existing forms of the heavy metal in soil, increase the content of plant effective state heavy metal in soil, and then
Improve remediation efficiency.
Chelation evoked recovery technique can significantly improve plant absorption and accumulation heavy metal and receive much concern based on chelating agent, its
General principle is the balance for disturbing pollutant between liquid phase of soil concentration and solid concentration.Soil is inhaled by the surface of mineral matter
Metal pollutant is fixed in attached effect, the complexing of humus and precipitation reaction etc..After chelating agent is added in soil, itself and
Heavy metal ion in the soil liquid is combined, and reduces liquid phase of soil concentration of metal ions, to maintain metal ion in liquid phase and
Balance between solid phase, heavy metal is converted into soluble state from soil particle surface desorption by not solvent.The addition of chelating agent changes
Occurrence patterns of the heavy metal in soil, improve the biological effectiveness of heavy metal, and then can be with fortification of plants to target weight
The absorption of metal, enhances phytoremediation efficiency.Apply the absorption that chelating agent not only increases certain plants heavy metal, it is heavier
What is wanted is the enrichment for promoting heavy metal part on the ground, and this is very important to phytoremediation, because phytoremediation is main
Completed by gathering in aboveground vegetation part.The conventional chelating agent of heavy-metal contaminated soil plant extract reparation has two classes：
One class is artificial synthesized intercalating agent, and such as ethylenediamine tetra-acetic acid (EDTA), ethoxy replace ethylenediamine triacetic acid (HEDTA), diethyl
Base pentaacetic acid (DTPA), ethyleneglycol bistetraacetic acid (EGTA), EDDA (EDDHA), CDTA
(CDTA) etc.；Another kind of is natural intercalating agent, mainly some low molecular weight organic acids, such as citric acid, oxalic acid, tartaric acid
Deng also including inorganic compound such as rhodan ammonium.Wherein, ethylenediamine tetra-acetic acid (EDTA) is a kind of most common chelating agent, valency
Lattice are relatively low, reinforcing effect is preferable, but studies have reported that it is easily caused the heavy metal after activation to ground in the environment compared with difficult degradation
Lower water and Soil Surrounding are migrated, and cause secondary pollution.EDDS (EDDS) is a kind of natural isomerism of EDTA
Body, molecular formula is C10H16N2O8, it has the advantages that bio-toxicity is small, degradability is high, sequestering power is strong, it is considered to be EDTA
Best substitute.Chelation evoked recovery technique has the advantages that easy to operate, expense is relatively low, effect is more apparent.It is chelation evoked
The effect of phytoremediation is confirmed by correlation practice：The application for a patent for invention of Application No. 200810010350.0, invention name
Referred to as " a kind of method that utilization chelating agent promotes pot marigold heavy metal cadmium accumulation "；The invention of Application No. 201410048591.x
Patent application, entitled " a kind of method of the phytoremediation efficiency for improving copper polluted soil ".
Reason heavy metal pollution of soil is ruled by law with engineering, the soil remediation effect small for pollution weight, area is obvious, but for
The larger soil quantities of contaminated area is big, control expense is high, and needs special instrument and trained professional,
Operation difficulty is larger, and engineering control method also results in soil texture destruction and soil fertility declines, therefore is subject in practical application
Certain limitation.Chemo-Therapy logos is carried out on soil in-situ, simple and easy to apply, but is not that a kind of permanent reparation is arranged
Apply, because it only changes existing forms of the heavy metal in soil, heavy metal element is remained in soil, easily once again by
Activation, harm is biological.Agricultural controls that logos is easy to operate and expense is relatively low, but it has application limitation, is relatively applied to slight pollution
Soil, and there are problems that repairing efficiency it is long,.For biological harnessing method, it is this to select suitable biology
The difficult point and key point of method.By taking phytoremediation technology as an example, though super enriching plant can largely accumulate heavy metal, its biomass
Often smaller, growth cycle is more long, harsher to growth environmental requirement, and common plant may be without drawbacks described above, but its counterweight
The patience and enriching of metal are limited；Further, since the heavy metal major part in soil is plant ineffectivity, it is impossible to enough to be planted
Thing absorbs, thus limits remediation efficiency to a certain extent；Finally, it is also contemplated that the subsequent treatment problem of rehabilitation plant.
The content of the invention
According to above the deficiencies in the prior art, the technical problems to be solved by the invention are to propose a kind of joint ethylenediamine two
The method of butanedioic acid and reed cadmium pollution soil repair, easy to operate, price is relatively low, do not destroy soil texture, do not cause secondary dirt
Dye, subsequent treatment are easy to beautify the environment again simultaneously.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is：
A kind of method for combining EDDS and reed cadmium pollution soil repair, methods described comprises the following steps：
Step one, reed seed is seeded in cadmium pollution soil；
Step 2, adds EDDS solution in reed breeding phase is to cadmium pollution soil, and reed life is removed afterwards
Above-ground organs after maturation long, continued growth, harvesting, circular treatment cadmium pollution soil after toothing；Wherein, the ethylenediamine of addition
The acid-base value of disuccinic acid solution is identical with the acid-base value of cadmium pollution soil.
Because reed is perennial plant, spring in the coming year, reed underground part can grow new talent, aforesaid operations be repeated, until the ground
Cadmium Pollution in Soils level reaches level of security.The calorific value of reed is high, content of ashes is low, thus rehabilitation plant subsequent treatment also more
It is convenient.
The concentration of the EDDS solution is 1-5mmol/kg.For slight Cd contaminated soils, ethylenediamine two
The suitable application concentration scope of succinic acid solution (EDDS) is 1~3mmol/kg.The selection of this chelating agent and the consumption of chelating agent
It is key point.Breeding phase is grown for reed, adds the concentration of EDDS solution to be preferably 1mmol/kg, now adopted
The treatment effect of maximum is reached when processing cadmium with EDDS.
The addition time of the EDDS solution is to remove 7-15 days before reed above-ground organs.
Methods described also includes the step of carrying out dipping pretreatment to reed seed before sowing.
The temperature of the dipping pretreatment is 25-30 DEG C.The immersion treatment in this temperature range, sends out beneficial to reed seed is improved
Bud rate.
The acid-base value of the EDDS solution is adjusted using highly basic.Highly basic can be potassium hydroxide, hydrogen
Sodium oxide molybdena etc..
The condition of culture of breeding phase described in step 2 is 28-32 DEG C of temperature, the illumination of humidity 70%-90%, 14h and 10h
Dark is alternately cultivated.This condition of culture causes that reed state of growing is more preferable.
The training method of reed seed sowing uses potted plant culture.The a diameter of 7.5cm in basin bottom of flowerpot in potted plant culture,
The a diameter of 10.5cm of basin mouthful, 9.5cm high, soil 0.5kg of the dress containing cadmium pollution per basin, per 15 reed seeds of basin during sowing, culture
Period irregularly exchanges the position between basin and basin to weaken edge effect；During culture progressively thinning to 6 plants of every basin and basis
Regime of soil water and fertility, waters, applies fertilizer, and meets the normal liquid manure demand of reed.
Present invention has the advantages that：The present invention is effective to increase plant using cadmium in degradable chelating agent EDDS activating soils
Property cadmium content, and using the largely accumulation and transhipment part cadmiums are to overground part of perennial energy-source plant reed root system, realize repairing slight
The purpose of cadmium pollution soil.
Advantages of the present invention is mainly reflected in some characteristics of rehabilitation plant and chelating agent, and theirs are illustrated individually below
Advantage：
Rehabilitation plant reed
1. environmental suitability is strong.Reed is a kind of typical pionner, drought-enduring, moisture-proof, impoverishment tolerant, and it can be by flourishing
Root system mushrooms out covering ground, frequently forms large area grassy marshland.The fertility of reed is quite strong, can use stem, root-like stock, seed
Bred.China is the distribution center of reed grass, is distributed in northeast, northwest, North China and East China, resource very abundant.
2. power of regeneration is strong.Reed is grass family awns genus perennial plant, when reed grows to the maturity period, takes toothing to gather in
Mode harvests reed, spring in the coming year, and reed underground part can again grow new talent, therefore without repeat sowing, save work(laborsaving.
3. biomass is high, calorific value is high.Reed is C4 plants, and plant is tall and big, and dry matter production is high, and calorific value is high, and content of ashes is low,
It is a kind of important energy-source plant.
4. it is widely used.Reed grass is widely used, can be used for environmental protection, Landscape construction, biomass energy, pulping and paper-making,
Feed, medicinal etc..Heat energy can be produced to be then converted to electric energy by burning, and refined from the ashes, reclaimed heavy metal, administered
Also certain economic benefit has been obtained while pollution.
Additionally, experiment shows that reed grass heavy metal has stronger patience and characteristic of accumulation.
Chelating agent EDDS (EDDS)
1. activation effect is good.EDDS has multiple coordination atoms, can form soluble chelating thing, Neng Gouyou with various heavy
Effect ground increases plant availability content of beary metal in soil, promotes plant absorption, accumulation heavy metal.
2. it is biodegradable fast.Compared with artificial synthesized chelating agent, EDDS is easier degraded, effectively prevent the weight after activation
Metallic pollution Soil Surrounding and the risk into underground water, there is practical application potentiality higher.
3. small toxicity.Research shows that EDDS is smaller to plant and soil animal, the toxicity of microorganism, therefore applies EDDS
Disturbance to the ecosystem is smaller.
4. it is easy to operate.Chelating agent EDDS need not carry out coating and other complicated technologies are processed, with the side that solution is irrigated
Formula is added in soil.
Brief description of the drawings
The mark in the content and figure expressed by this specification accompanying drawing is briefly described below：
Fig. 1 is soil available Cd content situation map after various concentrations EDDS treatment 7d of the present invention, different small letters in figure
Letter represents significant difference (P<0.05)；
Fig. 2 is Cd accumulation amount situation map in the lower reed body of various concentrations EDDS treatment of the present invention, and identical filling column diagram is different
Lowercase letter indication difference significantly (P<0.05).
Specific embodiment
Below against accompanying drawing, by the description to embodiment, further details of is made to specific embodiment of the invention
Illustrate there is more complete, accurate and deep reason to inventive concept of the invention, technical scheme to help those skilled in the art
Solution.
Embodiment 1
(1) experimental design
Test plant seed is picked up near the gymnasium of Anhui Normal University north, is selected the seed of full seed and is preserved；For
Examination soil is picked up near the gymnasium of Anhui Normal University south, gathers top layer (0-20cm) soil, and its basic physical and chemical is：PH value
7.59, the content of organic matter 1.18g/kg, full cadmium content 0.83mg/kg.With basin mouthful diameter 10.5cm, basin bottom diameter 7.5cm, height
The plastic flowerpot of 9.5cm is tested, the dress soil 0.5kg per basin.With the pure CdCl of analysis2·2.5H2O provides Cd, with the shape of the aqueous solution
Formula is once added, add concentration for 3mg/kg (with Cd2+Meter), it is 3 times of soil Cd environmental quality III Standard values.Heavy metal with
After soil effect 20d, in sowing on 2 23rd, 2016 (soaking seed 12-24h with running water before sowing), per 15 seeds of basin,
The position between basin and basin is irregularly exchanged during culture to weaken edge effect；Progressively thinning is to 6 plants of every basin；According to the soil water
Fertile situation, waters, the rational application of fertilizer in good time, meets the normal liquid manure demand of reed.Culture terminates 24, preceding 7d i.e. 2016 on March and adds
EDDS, sets 4 treatment altogether, and (unit is mMs every thousand respectively to compare (not adding EDDS) EDDS concentration different with three
Gram soil) treatment experiment, concentration for the treatment of is 1,3 and 5mmol/kg, and each treatment sets three repetitions.Reed cultivation stage was in 2016 2
The moon starts on the 23rd, the end of day of March 31 in 2016, common 37d.Using phjytotron culture, condition of culture is：28-32 DEG C of temperature,
The illumination of humidity 70%-90%, 14h and 10h are dark, and test site is Anhui Normal University's ecology laboratory.
The plant sample of results is divided into two parts above and below the ground, is adhered on plant with removing with running water flushing
Soil and dirt, then with deionized water rinsing 3 times, surface moisture is blotted with blotting paper, plant sample is cut with stainless steel scissors
Into segment, in the 20min that finished at 105 DEG C, then dried to constant weight at 70 DEG C, it is levigate with stainless steel pulverizer and preserve.Throw
Plus collection of i.e. on March 31st, 2016 pedotheque after chelating agent EDDS 7d, the impurity, natural wind such as plant residue in rejecting soil
Do, crush and cross 2mm sieves.Use HNO3-HClO4Disappear and boil plant sample；Use 0.1mol/L NaNO3Solution vibration restricted-access media soil
Plant availability Cd in earth；Content of beary metal is determined using Japanese Shimadzu AA6800 types atomic absorption spectrophotometer.
Transhipment coefficient=overground part content of beary metal/root content of beary metal；Using Excel2003 carry out data processing and
Chart production.Significance test of difference is carried out using the One-way ANOVA (Ducan methods) of SPSS21, significance is P<
0.05。
(2) result of the test
Fig. 1 is soil available Cd content situations after various concentrations EDDS treatment 7d, different lowercase letters in figure
Significant difference (P<0.05), as seen from the figure：With the increase of EDDS dosages, plant availability Cd contents show in each treatment soil
Write higher than control (P<0.05), it is respectively 19.0,199.5 and 775 times；Compared to also with significant difference (P between each treatment
<0.05).Show：Chelating agent EDDS is stronger to the activation capacity of soil Cd.
As shown in Table 1, the trend that reduces afterwards is first increased as EDDS concentration raises reed seedling overground part Cd contents and presents,
Maximum is reached during 1mmol/kg treatment and control and other EDDS treatment (P is significantly higher than<0.05), 3,5mmol/kg EDDS treatment
When reed overground part Cd contents compared with the control without significant difference (P>0.05)；3rd, reed root Cd contains when 5mmol/kg EDDS are processed
Amount is significantly higher than (P when control and 1mmol/kg treatment<0.05)；Transhipment coefficient is in the variation tendency of first increases and then decreases,
Maximum is reached during 1mmol/kg and control is significantly higher than and respectively processes (P with other<0.05).
The above analysis, EDDS is stronger to the ability of regulation and control of soil Cd, can significantly improve soil available Cd contents,
Additionally, suitable concn EDDS can significantly improve in reed body Cd contents and reed can be promoted to transport Cd.
Influences of the EDDS of table 1 to cadmium content in reed seedling body
Note：Data are means standard deviation in table；With different lowercase letter indication differences significantly (P after column data<0.05)
Embodiment 2
(1) experimental design
Specific experimental design content is with reference to case one, and difference is as follows：Cadmium add concentration for 1mg/kg (with Cd2+Meter), be
Cadmium soil environment quality III Standard value；Reed cultivation stage on 2 23rd, 2016, the end of day of May 3 in 2016, totally 70
My god, 18,15 days i.e. 2016 on April added EDDS before culture terminates.
Plant height is determined with the slide measure that precision is 0.01mm；Sample is determined with Ao Haosi AR1140 a ten thousandths electronic balance
Product dry weight；Other index determinings and data processing method are with reference to case one.
(2) result of the test
As can be seen from Table 2：Each EDDS treatment groups reed plant height is more than control but difference does not have conspicuousness (P>0.05)；Reed
Overground part has similar Changing Pattern to root dry weight, i.e., after raising its presentation first reduction with chelating agent EDDS concentration for the treatment of
Increased variation tendency, the two is in 5mmolkg-1Peak value is reached during EDDS treatment, is respectively 1.16 and 1.42 times of control,
Significance difference analysis show, under various concentrations EDDS treatment, reed dry biomass with compare between there was no significant difference (P>
0.05).To sum up, chelating agent EDDS is grown without obvious inhibiting effect to reed on slight Cd contaminated soils.
Influences of the EDDS of table 2 to reed growth in Cd cadmium pollution soils
Note：Data are means standard deviation in table；With different lowercase letter indication differences significantly (P after column data<0.05)
As known from Table 3：Reed overground part and root cadmium content have similar Changing Pattern, i.e., with EDDS concentration for the treatment of liters
Height, it shows the variation tendency for first increasing and reducing afterwards, in EDDS 1mmolkg-1It is maximum and be significantly higher than control (P during treatment
<0.05), respectively be control 1.73 and 1.15 times, in EDDS 5mmolkg-1It is minimum during treatment, now overground part cadmium content
It is 1.05 times but there was no significant difference (P of control>0.05), root cadmium content is substantially less than control (P<0.05) it is it
47.5%；The transhipment coefficient of each E DDS treatment groups is all remarkably higher than control (P<0.05), be respectively its 1.49,1.51 and 2.27
Times.Show, 1. reed has stronger summation to cadmium, especially the root of reed；2. chelating agent EDDS absorbs to reed, accumulates cadmium table
Reveal the low phenomenon for promoting suppression high.3. chelating agent EDDS has facilitation to reed transhipment heavy metal cadmium.
Influences of the EDDS of table 3 to cadmium content in reed body
Note：Data are means standard deviation in table；With different lowercase letter indication differences significantly (P after column data<0.05)
Fig. 2 is Cd accumulation amount situation in the lower reed body of various concentrations EDDS treatment, same color column diagram difference lowercase
Represent significant difference (P<0.05), as seen from the figure：Raised with EDDS concentration, reed overground part, root and whole strain Cd accumulation amount have phase
As Changing Pattern, show the variation tendency for first increasing and reducing afterwards, in 3mmolkg-1, reed overground part, root and whole strain
Cd accumulation amount peaking is simultaneously significantly higher than control (P<0.05), respectively be control 1.51,1.41 and 1.44 times, in 5mmol
During kg-1, reed root and whole strain Cd accumulation amount are less than control but without significant difference (P>0.05).The study show that suitable
The EDDS of concentration has facilitation to reed accumulation cadmium.
The above analysis, EDDS reed is grown without obvious inhibiting effect and apply appropriate EDDS reed can be promoted to accumulate,
Transhipment Cd.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention is implemented and do not receive aforesaid way
Limitation, as long as employing the improvement of various unsubstantialities that method of the present invention design and technical scheme are carried out, or without changing
Enter and design of the invention and technical scheme are directly applied into other occasions, within protection scope of the present invention.This hair
Bright protection domain should be determined by the scope of protection defined in the claims.
Claims (8)
1. a kind of method for combining EDDS and reed cadmium pollution soil repair, it is characterised in that methods described includes
Following steps：
Step one, reed seed is seeded in cadmium pollution soil；
Step 2, adds EDDS solution in reed breeding phase is to cadmium pollution soil, reed is removed afterwards and is grown into
Above-ground organs after ripe, continued growth, harvesting, circular treatment cadmium pollution soil after toothing；Wherein, the amber of ethylenediamine two of addition
The acid-base value of amber acid solution is identical with the acid-base value of cadmium pollution soil.
2. the method for combining EDDS and reed cadmium pollution soil repair according to claim 1, it is characterised in that
The concentration of the EDDS solution is 1-5mmol/kg.
3. the method for combining EDDS and reed cadmium pollution soil repair according to claim 1, it is characterised in that
The addition time of the EDDS solution is to remove 7-15 days before reed above-ground organs.
4. the method for combining EDDS and reed cadmium pollution soil repair according to claim 1, it is characterised in that
Methods described also includes the step of carrying out dipping pretreatment to reed seed before sowing.
5. the method for combining EDDS and reed cadmium pollution soil repair according to claim 4, it is characterised in that
The temperature of the dipping pretreatment is 25-30 DEG C.
6. the method for combining EDDS and reed cadmium pollution soil repair according to claim 1, it is characterised in that
The acid-base value of the EDDS solution is adjusted using highly basic.
7. the method for combining EDDS and reed cadmium pollution soil repair according to claim 1, it is characterised in that
The condition of culture of breeding phase described in step 2 is 28-32 DEG C of temperature, the illumination of humidity 70%-90%, 14h and 10h dark alternately
Cultivate.
8. the method for combining EDDS and reed cadmium pollution soil repair according to claim 1, it is characterised in that
The training method of reed seed sowing uses potted plant culture.
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Cited By (4)
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| CN108405583A (en) * | 2018-03-21 | 2018-08-17 | 宝鸡文理学院 | A kind of method that the assisted and strengthened joint reparation pattern of super enriching plant administers Pb-Zn-Cd-Cu heavy-metal contaminated soils |
| CN109604319A (en) * | 2018-12-27 | 2019-04-12 | 广西博世科环保科技股份有限公司 | The combined governance packet of fortification of plants extraction repairing heavy metal pollution farming land |
| CN111804727A (en) * | 2020-06-29 | 2020-10-23 | 北京泷涛环境修复有限公司 | Method for treating antimony-polluted soil |
| CN112453050A (en) * | 2020-11-02 | 2021-03-09 | 浙江理工大学 | Method for repairing heavy metal cadmium contaminated soil by utilizing sunflower |
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| CN105964668A (en) * | 2016-06-13 | 2016-09-28 | 四川农业大学 | Cadmium-polluted soil restoration method |
| CN106216385A (en) * | 2016-07-27 | 2016-12-14 | 湖南恒凯环保科技投资有限公司 | A kind of contact break stabilisation restorative procedure of heavy-metal contaminated soil |
| CN106345796A (en) * | 2016-10-18 | 2017-01-25 | 安徽师范大学 | Method for repairing middle/light cadmium-polluted soil by utilizing perennial energy triarrhena sacchariflora and application thereof |
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| CN108405583A (en) * | 2018-03-21 | 2018-08-17 | 宝鸡文理学院 | A kind of method that the assisted and strengthened joint reparation pattern of super enriching plant administers Pb-Zn-Cd-Cu heavy-metal contaminated soils |
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| CN111804727A (en) * | 2020-06-29 | 2020-10-23 | 北京泷涛环境修复有限公司 | Method for treating antimony-polluted soil |
| CN112453050A (en) * | 2020-11-02 | 2021-03-09 | 浙江理工大学 | Method for repairing heavy metal cadmium contaminated soil by utilizing sunflower |
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Application publication date: 20170613 |