CN106077055A - A kind of method utilizing concentration type Sunflower Varieties to repair cadmium lead contamination farmland - Google Patents
A kind of method utilizing concentration type Sunflower Varieties to repair cadmium lead contamination farmland Download PDFInfo
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- CN106077055A CN106077055A CN201610603385.XA CN201610603385A CN106077055A CN 106077055 A CN106077055 A CN 106077055A CN 201610603385 A CN201610603385 A CN 201610603385A CN 106077055 A CN106077055 A CN 106077055A
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- cadmium
- lead
- helianthi
- soil
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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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- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Botany (AREA)
- General Health & Medical Sciences (AREA)
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- Molecular Biology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides and a kind of utilize concentration type Sunflower Varieties to repair cadmium and/or the method in lead contamination farmland, including: by the soil of Helianthi sowing to moderate or slight cadmium and/or lead contamination, by the heavy metal cadmium in Helianthi Root Absorption contaminated soil and/or lead and be transferred to overground part；And results absorb the Helianthi of heavy metal cadmium and/or lead.After results Helianthi, exclusive place can be passed to and concentrate and do harmless treatment.The present invention utilize Helianthi strong stress resistance, growth quickly, Biomass big and to cadmium and/or the common enriched character of lead, cadmium in absorption and accumulation polluted farmland soil and/or lead heavy metal, and it is transported to aerial parts, thus reduce Cadium In Polluted Soil and/or lead content.The present invention is applicable to moderate or slight cadmium and/or the improvement reparation of lead contamination agricultural land soil, simultaneously as Helianthi strong stress resistance, extensive management in growth course, thus cost is relatively low, and workable, have a good application prospect.
Description
Technical field
The present invention relates to the phytoremediation technology field of Heavy Metals In Environment, utilize concentration type more particularly to one
Sunflower Varieties repairs cadmium and/or the method in lead contamination farmland.
Background technology
Soil is the natural environment depended on for existence of the mankind and the valuable source of agricultural production, and soil environment is healthy concerning agricultural production
Quality and health.In recent years, heavy metal pollution of soil has become the serious environmental problem that the whole world faces.At present, I
State's agricultural land soil is serious by heavy metal pollution, shows according to First National Soil Pollution Investigation result, China's arable soil
Point position exceeding standard rate is 19.4%, the most slightly, slightly, moderate and serious pollution point position ratio be respectively 13.7%, 2.8%,
1.8% and 1.1%；And from the point of view of pollutant exceed standard situation, heavy metal cadmium and lead point position exceeding standard rate are respectively 7.0% and 1.5%.
China is by the agricultural land soil about 25,000,000 hectares of heavy metal pollution, the most contaminated by heavy metals grain up to 12,000,000 now
Ton, the direct economic loss caused is more than 10,000,000,000 yuan.
Traditional administration way of cadmium and/or lead-contaminated soil is mainly engineering control measure and physical chemistry restorative procedure,
But it often has with high costs, big to environmental perturbation and is likely to result in the drawbacks such as secondary pollution.In recent years, phytoremediation is utilized
Technology is administered heavy metal pollution of soil field in situ and has been increasingly becoming main flow, and it is relatively low, right that phytoremediation technology has rehabilitation cost
The advantages such as environmental perturbation is little, non-secondary pollution and sustainability, have the effect beautified the environment concurrently simultaneously, and for moderate and slight
Cadmium and/or lead-contaminated soil, utilize phytoremediation also to have the advantage that remediation efficiency is high and repair time is short, and these advantages are works
Not available for journey control measures and physical chemistry restorative procedure.
In phytoremediation technology, utilize super enriching plant to absorb the cadmium in contaminated soil and/or lead heavy metal is more
Common technology, but the super enriching plant having now been found that generally has soil climate adaptation ability, poor growth, Biomass
The problem such as little, limits its remediation efficiency and promotional value.And super enriching plant typically requires in the suitable south of climatic environment
Spring and summer grows, and when low heavy metal pollution farmland during it is applied to the north, does not only take up farmland resource, and limits it and push away
Extensively, thus affect the reparation of agricultural land soil environmental quality.
Summary of the invention
(1) to solve the technical problem that
It is contemplated that propose a kind of concentration type Sunflower Varieties reparation cadmium and/or method in lead contamination farmland of utilizing, sharp
Adsorb heavy metal cadmium and/or lead in soil with plantation mcroorganism amount cadmium lead concentration type Helianthi, thus repair the cadmium of agricultural land soil
And/or lead contamination.
(2) technical scheme
What the present invention proposed utilizes Helianthi to repair cadmium and/or the method in lead contamination farmland, including: Helianthi is sowed extremely
The soil of moderate or slight cadmium and/or lead contamination is emerged and survival and growth, by Helianthi Root Absorption contaminated soil
Heavy metal cadmium and/or lead are also transferred to overground part, and results absorb heavy metal cadmium and/or the Helianthi of lead and are passed to
Exclusive place is concentrated and does harmless treatment.
According to embodiments of the invention, described Helianthi is lead cadmium concentration type Sunflower Varieties.
(3) beneficial effect
What the present invention proposed utilizes concentration type Sunflower Varieties to repair cadmium and/or the method in lead contamination farmland, by will be to
The sowing of day certain herbaceous plants with big flowers, in the soil of moderate or slight cadmium and/or lead contamination, utilizes the feature of Helianthi strong stress resistance, it is ensured that it is emerged
And normal growth.Recycle the accumulation ability of its heavy metal cadmium and/or lead, by the heavy metal in Root Absorption contaminated soil
Cadmium and/or lead also transfer them to aerial parts, to reach to reduce heavy metal in soil cadmium and/or lead content, remediating heavy metal
The purpose of polluted farmland soil.In the present invention, Sunflower Varieties has that widely distributed, strong stress resistance, fertility be strong and Biomass
The characteristic such as bigger, and heavy metal in soil cadmium is had stronger accumulation ability, heavy metal in soil lead is also had certain
Recovery dynatron effect.For repairing moderate or slight cadmium and/or lead contamination agricultural land soil, also have that input cost is relatively low, remediation efficiency
The feature such as high, to beautify the environment, and Helianthi is one of about the oil plant that China is important, has economic worth and ornamental value concurrently,
Thus its reparative potential and having a extensive future.
Accompanying drawing explanation
Fig. 1 illustrates and utilizes concentration type Helianthi to administer cadmium and/or lead contamination agricultural land soil reparation according to embodiments of the present invention
The flow chart of method；
Fig. 2 illustrate according to embodiments of the present invention in 28 kinds of Sunflower Varieties Preliminary screening go out accumulation ability stronger to day
Certain herbaceous plants with big flowers kind；
Fig. 3 illustrates the content of the Sunflower Varieties overground part enriching heavy metal cadmium filtered out；
Fig. 4 illustrates the content of the Sunflower Varieties overground part enriching heavy metal lead filtered out.
Specific implementation method
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
In view of the technical problem described in background section, it is necessary to screening one growth is quick, the bigger tool of Biomass
Certain economic value simultaneously cadmium and/or the stronger plant variety of lead accumulation ability is had to repair moderate and slight cadmium and/or lead contamination
Agricultural land soil, this is not only advantageous to the repairing and treating of cadmium and/or lead-contaminated soil, and does not affect the reasonable of polluted agricultural land resource
Utilize.
Inventors noted that Helianthi is as one of Chinese important oil crop, can be with grain or other industrial crops
Carry out Multiple Cropping Rotation, all have extensively plantation in China northeast, northwest and North China.And Helianthi to soil heavy metal cadmium and/
Or lead has stronger accumulation ability, therefore filter out Biomass is big, enriching is strong Sunflower Varieties administer mild or moderate cadmium and/
Or there is on lead contamination agricultural land soil certain reparative potential and using value.
Fig. 1 illustrates and utilizes concentration type Helianthi to administer cadmium and/or lead contamination agricultural land soil reparation according to embodiments of the present invention
The flow chart of method.The method completes as follows:
S1: first pass through and compare 28 kinds of different cultivars Helianthi aerial parts cadmiums, lead contents, by analyzing, it is right to filter out
Cadmium, the Sunflower Varieties that lead concentration coefficient is higher；Then the concentration type Sunflower Varieties the upperground part biomass filtered out is carried out
Comparative analysis, filters out cadmium and/or lead concentration type and the bigger Sunflower Varieties of Biomass further as repair materials.
S2: will become in the agricultural land soil of the concentration type Helianthi sowing filtered out to moderate or slight cadmium and/or lead contamination
Living and emerge and grow, seeding method is program request, and depth of planting is 5cm, and spacing in the rows is 40cm, and line-spacing is 40cm.
S3: by the heavy metal cadmium in Helianthi Root Absorption contaminated soil and/or lead, and transfer them to overground part.
S4: the Helianthi overground part that results are ripe, and be passed to exclusive place and concentrate and do harmless treatment.
The present invention will be further described by the following examples.
Embodiment place is located at low cadmium and/or lead contamination agricultural land soil near smeltery of Henan Province, passes through field
The Sunflower Varieties that 28 kinds are different is planted in soil by plot experiment, measure in its soil and the cadmium of Helianthi overground part and/
Or lead content of beary metal and the Biomass of Helianthi.
According to embodiments of the invention, Index geo-accumulation method is utilized to choose moderate or slight cadmium and/or lead contamination farmland soil
Earth, its expression formula is Igeo=log2[Cn/(k*Bn)], wherein CnIt is element n content in contaminated soil；BnIt it is contaminated soil
In the Environmental Background Levels of this element；K be consider that the variation of background value that different soils difference may cause takes be
Number, is used for characterizing soil characteristic and other influences, as 1≤IgeoDuring ＜ 2, for intermediate pollution soil；As 0≤IgeoDuring ＜ 1, for gently
Degree contaminated soil.According to embodiments of the invention, k is equal to 1.5.
Experiment She28Ge community, plot area is 4m × 4m, respectively 28 kinds of different Sunflower Varieties of plantation, by not
With kind Helianthi overground part to cadmium and/or the enriching quantity of lead heavy metal, filter out cadmium, Helianthi that lead accumulation ability is stronger
Kind (Fig. 2)；Then by comparison different cultivars Helianthi the upperground part biomass, the enrichment energy of suitable local plantation is filtered out
The Sunflower Varieties that power is strong and Biomass is bigger.This test by above step filter out golden Mo Nika, happy cannon bamboo and
Lotus flower when fully open 3 kinds is suitably as the kind of repair materials.
Then comparing the accumulation ability of its heavy metal cadmium and/or lead, Cadium In Polluted Soil content is 2.22mg/kg, and lead contains
Amount is 173.06mg/kg.3 kinds of Helianthi overground part cadmium contents are as it is shown on figure 3,3 kinds of Helianthi overground part cadmium contents as seen from the figure
It is not significantly different from, the Helianthi of golden Mo Nika kind enriching quantity slightly above joy cannon bamboo and lotus flower when fully open to cadmium；3 kinds
As shown in Figure 4, its overground part heavy metal lead of Helianthi of golden Mo Nika kind contains Helianthi overground part lead content as seen from the figure
Amount to be significantly higher than happy cannon bamboo and lotus flower when fully open kind.
Bio-concentration factor, also known as living being concentration ratio (Bio-concentration Factor, BCF), it can be anti-
Reflecting the plant enrichment characteristics to heavy metal in soil, concentration coefficient is one of standard judging super enriching plant more than 1.This enforcement
Example characterizes different cultivars Helianthi to Cadmium in Soil and/or the accumulation ability of lead, heavy metal richness by heavy metal accumulation coefficient
Collection coefficient can be calculated by below equation:
Heavy metal accumulation coefficient=plant in-vivo heavy metal content/heavy metal in soil content
Calculating and understand, golden Mo Nika, happy cannon bamboo and 3 kinds of Helianthi cadmium concentration coefficients of lotus flower when fully open are respectively
3.04,2.84 and 2.83, the selected Sunflower Varieties heavy metal cadmium of this explanation all has stronger accumulation ability, its accumulation ability
By to weak being by force: gold not girl blocks ＞ joy cannon bamboo ＞ lotus flower when fully open；Golden Mo Nika, happy cannon bamboo and lotus flower when fully open 3
Plant Helianthi lead concentration coefficient and be respectively 0.23,0.16 and 0.17, it is known that selected Sunflower Varieties is to Heavy Metals in Contaminated Soils
Lead has certain reparative potential, and its absorbability is by weak being by force: gold not girl blocks ＞ lotus flower when fully open ＞ joy cannon bamboo, combines
Incompatible see, golden Mo Nika heavy metal cadmium, lead accumulation ability the strongest, can as mild or moderate cadmium lead contamination agricultural land soil relatively
For preferable repair materials.
Helianthi is one of important oil crop of China, and its stem branch vertical growth, strain height reaches, photosynthesis and growth
Efficiency is higher, and its flower becomes clear generous, has ornamental value, more can plant as energy-source plant, and the period of maturation, dry biological yield could
Reach 1000kg/ mu, according to the data measured by embodiment, the cadmium filtered out and/or lead concentration type Helianthi (gold not girl
Card) overground part cadmium content averagely can reach 6.76mg/kg, and lead content averagely can reach 39.04mg/kg, i.e. every mu every kind
Plant one batch of Helianthi and can remove 6.76g cadmium and 39.04g lead from soil, can effectively reduce the heavy metal cadmium in soil and/or
The content of lead, reaches rehabilitating soil cadmium and/or the effect of lead heavy metal pollution.
The above, the only detailed description of the invention in the present invention, but protection scope of the present invention is not limited thereto, and appoints
What is familiar with the people of this technology in the technical scope that disclosed herein, it will be appreciated that the conversion expected or replacement, all should contain
Within the scope of the comprising of the present invention.
Claims (9)
1. one kind utilizes Helianthi to repair cadmium and/or the method for lead-contaminated soil, it is characterised in that including:
By the soil of Helianthi sowing to moderate or slight cadmium and/or lead contamination is emerged and survival and growth, pass through Radix Helianthi
System absorbs the heavy metal cadmium in contaminated soil and/or lead and is transferred to overground part；And
Results absorb the Helianthi of heavy metal cadmium and/or lead.
Helianthi is utilized to repair cadmium and/or the method for lead contamination the most according to claim 1, it is characterised in that described to day
Certain herbaceous plants with big flowers kind is cadmium lead concentration type Sunflower Varieties, described cadmium lead concentration type Sunflower Varieties through the following steps that screening:
With the soil of moderate and slight cadmium and/or lead contamination for Helianthi somatomedin, record and analyze different cultivars Helianthi
The corresponding cadmium of aerial parts and/or lead content, the simultaneously Biomass of the different Sunflower Varieties of record；
By to different cultivars Helianthi overground part cadmium and/or the analysis of lead content, filter out and cadmium and/or lead are enriched with system
The Sunflower Varieties that number is higher, then compares, further the concentration type Sunflower Varieties the upperground part biomass filtered out
Filter out cadmium and/or lead concentration type and the bigger Sunflower Varieties of Biomass.
Helianthi is utilized to repair cadmium and/or the method for lead-contaminated soil the most according to claim 1, it is characterised in that described
Helianthi includes one below: golden Mo Nika, happy cannon bamboo and lotus flower when fully open.
Helianthi is utilized to repair cadmium and/or the method for lead contamination the most according to claim 1, it is characterised in that described to day
Certain herbaceous plants with big flowers seeding method is live, uses some broadcast mode, and depth of planting is 5cm, and spacing in the rows is 40cm, and line-spacing is 40cm.
Utilize Helianthi to repair cadmium and/or the method for lead contamination the most according to claim 1, it is characterised in that described cadmium and/
Or lead-contaminated soil is moderate or slight pollution soil, Index geo-accumulation method is utilized to choose moderate or slight cadmium and/or lead contamination
Agricultural land soil, its expression formula is Igeo=log2[Cn/(k*Bn)], wherein CnIt is element n content in contaminated soil；BnIt is dirty
The Environmental Background Levels of this element in dye soil；K be consider the variation of background value that different soils difference may cause and
The coefficient taken, is used for characterizing soil characteristic and other influences, as 1≤IgeoDuring ＜ 2, for intermediate pollution soil；As 0≤Igeo＜ 1
Time, for slight pollution soil.
Choose moderate or slight cadmium and/or the method in lead contamination farmland the most according to claim 5, it is characterised in that k is equal to
1.5。
Helianthi is utilized to repair cadmium and/or the method for lead contamination the most according to claim 1, it is characterised in that described to day
Certain herbaceous plants with big flowers has the property that, when Heavy Metals in Soil Contaminated cadmium content is 2.22mg/kg, Helianthi overground part cadmium content reaches
6.76mg/kg；When Heavy Metals in Soil Contaminated lead content is 173.06mg/kg, Helianthi overground part lead content reaches
39.04mg/kg。
Utilize Helianthi to repair cadmium and/or the method for lead contamination the most according to claim 1, also include: at results Helianthi
After, it is passed to exclusive place and concentrates and do harmless treatment.
Helianthi is utilized to repair cadmium and/or the method for lead contamination the most according to claim 8, it is characterised in that described harmless
Change processes and includes burning or making innoxious landfill after compression.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107913900A (en) * | 2017-12-15 | 2018-04-17 | 河北麦森钛白粉有限公司 | Nano-titanium dioxide is used for the method for soil remediation |
| CN109174952A (en) * | 2018-07-27 | 2019-01-11 | 江苏隆昌化工有限公司 | A kind of passivation of cadmium lead contamination farmland plus low-accumulation plants restorative procedure |
| CN109513735A (en) * | 2018-12-21 | 2019-03-26 | 四川长虹格润环保科技股份有限公司 | Cd-polluted farmland safe utilization method based on oil crops |
| CN110331160A (en) * | 2019-07-29 | 2019-10-15 | 中国科学院地理科学与资源研究所 | A kind of genetically modified plants plasmid p3301-121-ZnT1 and application for repairing polluted-water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107913900A (en) * | 2017-12-15 | 2018-04-17 | 河北麦森钛白粉有限公司 | Nano-titanium dioxide is used for the method for soil remediation |
| CN109174952A (en) * | 2018-07-27 | 2019-01-11 | 江苏隆昌化工有限公司 | A kind of passivation of cadmium lead contamination farmland plus low-accumulation plants restorative procedure |
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| CN110331160A (en) * | 2019-07-29 | 2019-10-15 | 中国科学院地理科学与资源研究所 | A kind of genetically modified plants plasmid p3301-121-ZnT1 and application for repairing polluted-water |
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