CN105013807A - Method for improving heavy metal contaminated soil - Google Patents
Method for improving heavy metal contaminated soil Download PDFInfo
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- CN105013807A CN105013807A CN201410179750.XA CN201410179750A CN105013807A CN 105013807 A CN105013807 A CN 105013807A CN 201410179750 A CN201410179750 A CN 201410179750A CN 105013807 A CN105013807 A CN 105013807A
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- contaminated 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
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- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a method for improving heavy metal contaminated soil. The method comprises the steps of performing ridging: performing ridging on leveled land, controlling the ridge distance to be 40-60 cm and controlling the ridge height to be 5-15 cm; planting pennisetum alopecuroides: planting mature pennisetum alopecuroides stems serving as seed stems, flatly placing the seed stems on ridges or slantly inserting the seed stems in the ridges with buds upward, controlling the planting distance to be 50-60 cm, covering the seed stems with soil which is 6-10 cm in thickness; performing harvesting and harmless treatment: harvesting the pennisetum alopecuroides every 30-50 days, and performing harmless treatment on the harvested pennisetum alopecuroides. The adopted pennisetum alopecuroides improves the heavy metal contaminated soil, the effect is obvious, and the harvested pennisetum alopecuroides has many widespread utilization values.
Description
Technical field
The present invention relates to the method for improvement heavy-metal contaminated soil, particularly a kind of planting plants that adopts absorbs heavy metal in soil to improve the method for soil.
Background technology
At present, the heavy metal pollution of soil especially severe around garbage loading embeading place, waste incineration field, around thermal power plant.Soil around some garbage loading embeading places, waste incineration field, around thermal power plant causes soil not cultivate due to heavy metal pollution, in order to ensure that these contaminated by heavy metals soil are improved before second ploughing, at present, the huge effort that each side makes, also very large achievement is achieved, but the state of second ploughing can be reached contaminated by heavy metals soil improvement, do not shoulder heavy responsibilities.
At present, it is adopt some special plants of plantation that a lot of heavy metal contaminated soil carries out the best instrument of improvement, the heavy metal in soil is absorbed by plant itself, then carry out innoxious to these plants, these contaminated by heavy metals soil can be used to be improved by the plantation in a few season, thus can second ploughing.
China Patent Publication No. 103521508A discloses the plant restoration method of cadmium pollution soil, the method adopts the method for the cadmium in plantation rye grass absorption soil, but the method also needs to add organic acid before harvesting rye grass, by organic acid irrigation inducing action, improve the biological effectiveness of heavy metal cadmium.But can not to the absorption of other heavy metal as caesium etc.
Summary of the invention
The invention provides a kind of planting plants heavy metal contaminated soil that utilizes and carry out the method improved, the method.
Technical scheme of the present invention is: a kind of method improveing heavy-metal contaminated soil, adopts plantation Chinese pennisetum to absorb the mode of the heavy metal in contaminated soil, comprises the following steps:
Ridging, ridging on the soil after smooth, row spacing is 40 to 60cm, and ridge is high is 5 to 15cm;
Plantation Chinese pennisetum, the Chinese pennisetum stipes of maturation is planted as kind of a stem, kind of a stem is lain on ridge or bud oblique cutting is on ridge upward, spacing in the rows is 50-60cm, earthing 6-10cm;
Harvesting and harmless treatment, every harvesting in 30 to 50 days once, carry out harmless treatment by the Chinese pennisetum of gathering in.
Gather in more than ten times, soil is improved.
Further, in the method for above-mentioned improvement heavy-metal contaminated soil: when leveling land, every mu uses sufficient farm manure 3000 kilograms or composite fertilizer 100 kilograms.
Further, in the method for above-mentioned improvement heavy-metal contaminated soil: during ridging, distance between the ridges is 40cm, ridge height is 10cm.
Further, in the method for above-mentioned improvement heavy-metal contaminated soil: every harvesting in 35 days once.
Further, in the method for above-mentioned improvement heavy-metal contaminated soil: the Chinese pennisetum of harvesting is dried and carries out harmless treatment as fuel or as the raw material manufacturing alcohol.
Further, in the method for above-mentioned improvement heavy-metal contaminated soil: planting soil bean seedlings between ridge.At potato seedling among sunflower seedling.
The Chinese pennisetum heavy metal contaminated soil that the present invention adopts improves, successful, and the Chinese pennisetum of harvesting itself also has a lot of value widely.
Below in conjunction with specific embodiment, the present invention is described in more detail.
Detailed description of the invention
Embodiment 1, the present embodiment a kind ofly to be improved soil contaminated by heavy metals on soil by plantation Chinese pennisetum, the soil of heavy metal particularly caesium, cadmium pollution can have obvious effect by this method.
In the present embodiment, by plantation Chinese pennisetum, contaminated by heavy metals soil is improved, mainly comprises the following steps:
Ridging, ridging on the soil after smooth, row spacing is 40 to 60cm, and ridge is high is 5 to 15cm; The row spacing of general employing is 40cm, and height 10cm is proper on ridge.
Plantation Chinese pennisetum, the Chinese pennisetum stipes of maturation is planted as kind of a stem, kind of a stem is lain on ridge or bud oblique cutting is on ridge upward, spacing in the rows is 50-60cm, earthing 6-10cm.
Planting soil bean seedlings and sunflower seedling between ridge.
Harvesting and harmless treatment, every harvesting in 30 to 50 days once, carry out harmless treatment by the Chinese pennisetum of gathering in.Within general 35 days, harvesting primary effect is best, and after more than 35 days, Chinese pennisetum is aging, and the efficiency absorbing heavy metal reduces.
The Chinese pennisetum of harvesting can be used for drying and use as fuel, also can be used for manufacturing the raw materials of industry such as alcohol.But can not be used for letting animals feed.Cut off after potato seedling and sunflower seedling grow up to, do harmless treatment.
Gather in more than ten times, soil is improved.
Chinese pennisetum (formal name used at school: Pennisetum alopecuroides) is a kind of grass.Be a kind of tropical plants, this Plants is also distributed widely in district of each province, Chinese north and south; Temperate zone, Asia and Australia, Oceania also have.Found through experiments Chinese pennisetum can radioactive element caesium in efficient absorption soil, contribute to removing and be subject to heavy metal and radiocesium, the effect that Chinese pennisetum removes radiocesium is best, in soil, the radiocesium of 0.9% is absorbed by Chinese pennisetum, its efficiency is about 6 times of Amaranthus, in the past, Amaranthus was considered to remove the most effective of radiocesium.
Wild Chinese pennisetum also has certain suction-operated to the heavy metal in soil, but due to not through manually utilizing the natural law to carry out rational close planting and plantation, harvesting etc., the limited efficiency of improvement soil, therefore, is used as pasture growing mostly.
Experiment proves, at removing radioactive substance on, improve soil, even if remove topsoil, the radioactive substance caesium still having 18% to 22% remains in soil, can be removed the caesium in soil by method above further.
Claims (7)
1. improve a method for heavy-metal contaminated soil, it is characterized in that: adopt plantation Chinese pennisetum to absorb the mode of the heavy metal in contaminated soil, comprise the following steps:
Ridging, ridging on the soil after smooth, row spacing is 40 to 60cm, and ridge is high is 5 to 15cm;
Plantation Chinese pennisetum, the Chinese pennisetum stipes of maturation is planted as kind of a stem, kind of a stem is lain on ridge or bud oblique cutting is on ridge upward, spacing in the rows is 50-60cm, earthing 6-10cm;
Harvesting and harmless treatment, every harvesting in 30 to 50 days once, carry out harmless treatment by the Chinese pennisetum of gathering in;
Gather in more than ten times, soil is improved.
2. the method for improvement heavy-metal contaminated soil according to claim 1, is characterized in that: when leveling land, and every mu uses sufficient farm manure 3000 kilograms or composite fertilizer 100 kilograms.
3. the method for improvement heavy-metal contaminated soil according to claim 1, is characterized in that: during ridging, distance between the ridges is 40cm, and ridge height is 10cm.
4. the method for improvement heavy-metal contaminated soil according to claim 1, is characterized in that: every harvesting in 35 days once.
5. according to the method for described improvement heavy-metal contaminated soil arbitrary in Claims 1-4, it is characterized in that: the Chinese pennisetum of harvesting is dried and carries out harmless treatment as fuel or as the raw material manufacturing alcohol.
6., according to the method for described improvement heavy-metal contaminated soil arbitrary in Claims 1-4, it is characterized in that: planting soil bean seedlings between ridge.
7. the method for improvement heavy-metal contaminated soil according to claim 6, is characterized in that: at described potato seedling among sunflower seedling.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179750.XA CN105013807A (en) | 2014-04-30 | 2014-04-30 | Method for improving heavy metal contaminated soil |
| PCT/CN2014/076866 WO2015165127A1 (en) | 2014-04-30 | 2014-05-06 | Method for improving soil polluted by heavy metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410179750.XA CN105013807A (en) | 2014-04-30 | 2014-04-30 | Method for improving heavy metal contaminated soil |
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| CN105013807A true CN105013807A (en) | 2015-11-04 |
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| CN201410179750.XA Pending CN105013807A (en) | 2014-04-30 | 2014-04-30 | Method for improving heavy metal contaminated soil |
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| CN (1) | CN105013807A (en) |
| WO (1) | WO2015165127A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583428A (en) * | 2016-12-01 | 2017-04-26 | 唐秀克 | Method for improving mountainous region with copper exceeding standards through plants |
| CN107234128A (en) * | 2017-08-04 | 2017-10-10 | 关越 | A kind of method of Phytoremediation of Soils Contaminated by Heavy Metals |
| CN107318450A (en) * | 2017-08-18 | 2017-11-07 | 北京汉都环境科技有限公司 | A kind of heavy metal-polluted soil biodegrading process based on biological coupling technology |
| CN107873360A (en) * | 2017-11-16 | 2018-04-06 | 广西壮族自治区畜牧研究所 | A kind of interplanting method of purple napier grass and mulberry tree |
| CN108102984A (en) * | 2018-01-12 | 2018-06-01 | 江苏省农业科学院 | Raw Bacillus megatherium BM18-2 and its application in one plant of somatotrophic hybrid Chinese pennisetum of cadmium |
| CN112567920A (en) * | 2020-12-16 | 2021-03-30 | 山东农业大学 | Method for improving cadmium-polluted soil restoration capacity of hybrid pennisetum alopecuroides |
| CN113477703A (en) * | 2021-07-30 | 2021-10-08 | 西南科技大学 | Method for remedying strontium-polluted soil by combining pasture, forage grass and microorganism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110340123A (en) * | 2019-07-15 | 2019-10-18 | 北京淖尔科技有限公司 | A kind of administering method and device of the Compound Heavy Metals soil of Highways ' |
| CN115119566A (en) * | 2022-07-04 | 2022-09-30 | 江苏萤火虫环境科技有限公司 | Method for absorbing and accumulating Cd in heavy metal polluted farmland by sedum plumbizincicola under photovoltaic power generation facility and raising and protecting seedlings |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583428A (en) * | 2016-12-01 | 2017-04-26 | 唐秀克 | Method for improving mountainous region with copper exceeding standards through plants |
| CN107234128A (en) * | 2017-08-04 | 2017-10-10 | 关越 | A kind of method of Phytoremediation of Soils Contaminated by Heavy Metals |
| CN107318450A (en) * | 2017-08-18 | 2017-11-07 | 北京汉都环境科技有限公司 | A kind of heavy metal-polluted soil biodegrading process based on biological coupling technology |
| CN107873360A (en) * | 2017-11-16 | 2018-04-06 | 广西壮族自治区畜牧研究所 | A kind of interplanting method of purple napier grass and mulberry tree |
| CN108102984A (en) * | 2018-01-12 | 2018-06-01 | 江苏省农业科学院 | Raw Bacillus megatherium BM18-2 and its application in one plant of somatotrophic hybrid Chinese pennisetum of cadmium |
| CN108102984B (en) * | 2018-01-12 | 2018-10-12 | 江苏省农业科学院 | Raw bacillus megaterium BM18-2 and its application in one plant of somatotrophic hybrid Chinese pennisetum of cadmium |
| CN112567920A (en) * | 2020-12-16 | 2021-03-30 | 山东农业大学 | Method for improving cadmium-polluted soil restoration capacity of hybrid pennisetum alopecuroides |
| CN113477703A (en) * | 2021-07-30 | 2021-10-08 | 西南科技大学 | Method for remedying strontium-polluted soil by combining pasture, forage grass and microorganism |
| CN113477703B (en) * | 2021-07-30 | 2022-04-12 | 西南科技大学 | Method for remedying strontium-polluted soil by combining pasture, forage grass and microorganism |
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| WO2015165127A1 (en) | 2015-11-05 |
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Application publication date: 20151104 |