CN102950147A - Method for restoring petroleum-contaminated soil by utilizing halophyte atriplex tatarica - Google Patents
Method for restoring petroleum-contaminated soil by utilizing halophyte atriplex tatarica Download PDFInfo
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- 241000196324 Embryophyta Species 0.000 claims abstract description 50
- 239000003208 petroleum Substances 0.000 claims abstract description 17
- 230000007613 environmental effect Effects 0.000 claims abstract description 8
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Abstract
The invention relates to a method for restoring petroleum-contaminated soil by utilizing a halophyte atriplex tatarica. The method comprises the following steps of: planting the halophyte atriplex tatarica in the petroleum-contaminated soil, explanting the atriplex tatarica from the contaminated soil when the atriplex tatarica grows to a fruiting period, and continuously reducing excessive petroleum pollutants in the contaminated soil by repeatedly planting the plant until the content of the pollutants in the contaminated soil reaches an environmental safety standard. Compared with a conventional method for controlling the contaminated soil, the method has the advantages that an environment is beautified, a disposal site is not needed, the physicochemical property of the soil is not damaged, the secondary pollution does not exist, the cost is low, furthermore, the large-scale operation is suitable, the environment is improved while the pollution is controlled, and the like.
Description
Technical field
The present invention relates to oil-polluted soils phytoremediation technology field, specifically a kind of method by the saltbush improvement of plantation Tartar and remedying oil-polluted soils.
Background technology
Oil and goods thereof have caused severe contamination to soil and water in production, processing, transportation and use procedure.Petroleum substance contains multiple environmental toxicity species, especially wherein multiring aromatic hydrocarbon is considered to have very strong carcinogenicity, and because its molecular structure quite stable is difficult to be degraded, surrounding environment is caused very large threat [document 1: Heidi K. Bojes, Peter G. pope, 2007. Characterization of EPA ' s 16 priority pollutant polycyclic aromatic hydrocarbons (PAHs) in tank bottom soilds and associated contaminated soils at oil exploration and production sites in Texas. Regulatory Toxicology and Pharmacology 47 (2007) 288-295.[Heidi K. Bojes, Peter G. pope. produces among the EPA of oil-polluted soils the feature of polycyclic aromatic hydrocarbon (PAHs) pollutant in 16 in Texas oil exploration and production process. supervision toxicity and materia medica, 2007,47 (2007): 288-295]].Pollutant by food chain step by step enrichment finally jeopardize human health.The soil petroleum pollution thing can also be by the further polluted underground water of the approach such as leaching, thereby, cause the great attention of many countries and manage it is repaired.Biological restoration, especially phytoremediation are owing to its unique advantage causes the attention that people are general.
The oil pollution meeting of soil causes huge economic loss, and phytoremediation has the characteristics such as expense is low, effective, non-secondary pollution, but is main mainly with herbage and crops class, and this is in oil pollution and produce the secondary salinization area and be difficult to realize.Halophytes can be finished at solonchak the natural plants of the history of life on the ground as a class, with solonchak coevolution process in formed the special surviving policy of a series of adaptation saline environments, have resistance, easily breeding, seed longeivity long, can restrain oneself the characteristics such as high salinity environment and cause many scholars' concern, playing an important role aspect alkaline land improving and the pollutant reparation.Therefore, screening efficient degradation rehabilitation plant is feasible for repairing practice also from halophytes.
Summary of the invention
The object of the invention is, a kind of method of utilizing halophytes Tartar saltbush remedying oil-polluted soils is provided, the method is that halophytes Tartar saltbush is planted in oil-polluted soils, when the Tartar saltbush grows to fruiting period, the Tartar saltbush is shifted out from contaminated soil, by repeatedly planting this Plants, reduce continuously petroleum pollution excessive in the contaminated soil, until its pollutant load reaches environmental safety standard.Compare with traditional Remediation of Contaminated Soil, this method has landscaping, does not need to dispose the place, the physicochemical property of spoiled soil not, and non-secondary pollution, expense is low and be suitable for large-scale operation, is administering advantages such as improving environment when polluting.
A kind of method of utilizing halophytes Tartar saltbush remedying oil-polluted soils of the present invention follows these steps to carry out:
A, seed collecting and preservation: to the early and middle ten days in October, select the vigorous strain clump of growth by the end of September, harvest maturity is seed preferably, at 4 ℃ of Refrigerator stores of temperature;
B, grow seedlings and transplant: adopt hole plate seedling growth, the Tartar's saltbush Seed Points that stores is sowed in the dish soil of the free of contamination cave of nature, cover the 1-2mm fine sand in the cave panel surface, the timing spray water, make soil surface keep moistening, plant after 15 days or during plant height 7-10cm with Tartar's saltbush seedling replanting in the basin of oil-polluted soils, earthing up highly is 16-18cm, test every basin and plant 3 strain seedling, thinning is 1 strain/basin after its growth is stable;
C, field management: the oil-polluted soils flowerpot that will plant Tartar saltbush seedling moves to outdoor, regularly waters, and makes soil moisture content remain on 30-40%;
D, repair process: after 120 days growth and maturity of plant transplantation plantation, plant integral body from contaminated soil is removed, adopt EPA 3550 recommend methods to measure total petroleum hydrocarbons content in the soil, obtain the clearance of total petroleum hydrocarbon in the soil, and then repeat continuously planting plants, until reaching environmental safety standard, the total petroleum hydrocarbons content in the soil gets final product.
Tartar of the present invention saltbush (
Atriplex tataricaL.) be annual herb, high 20-80 centimetre.The stem multi-branched, branch is tiltedly stretched.The common tool short handle of leaf; Blade width egg shape, triangle, triangular shape are avette, the square circle is to lanceolar, and long 2-7 centimetre, wide 1-4 centimetre, the anxious point of tip or short gradually point, the wide wedge shape of base portion is to wedge shape, and edge tool irregular lacking split shape or the shallow shape sawtooth that splits, and the above is without powder, green, the below has close powder, canescence, and all there are close powder and laminar scopular in the two sides sometimes; Male flower tapel 5,2 bract fruit water chestnut shapes of female flower are avette to avette, and the edge symphysis of bottom is by central part yellow-white or the bronzing of base portion, the flowering fruit bearing stage 7-9 month.
A kind of method of utilizing halophytes Tartar saltbush remedying oil-polluted soils of the present invention, the method characteristics are:
The present invention utilizes halophytes to repair the degraded oil contaminated soil, it not only can effectively improve the soil property of contaminated soil, reduce petroleum hydrocarbon contaminated concentration, and can also play the effect that realization is beautified the environment, the more important thing is that the halophytes for rehabilitating soil has effectively avoided pollutant again to enter food chain, has reduced the secondary pollution that can cause in the rehabilitating soil to greatest extent.Compare with other recovery techniques, have cost low, little to ambient influnence, can make the earth's surface steady in a long-term, and when eliminating soil pollution, the atmosphere around the pollution abatement soil and the pollutant in the water body, the advantages such as its bio-diversity of raising are conducive to improve the ecological environment.In addition, there is abundant Halophyte Resources in Xinjiang, halophytes can be finished at solonchak the natural plants of the history of life on the ground as a class, with solonchak coevolution process in formed the special surviving policy of a series of adaptation saline environments, has resistance, easily breeding, seed longeivity is long, can restrain oneself the characteristics such as high salinity environment, playing an important role aspect alkaline land improving and the pollutant reparation, the present invention is planted in the Tartar saltbush in the oil-polluted soils, after the plant growth maturation, the whole strain of plant is removed and concentrate and deal carefully with, can reach the purpose of effectively removing total petroleum hydrocarbon in the soil.
Description of drawings
Fig. 1 is total petroleum hydrocarbon degraded figure in 120 days after stain soil of Tartar of the present invention saltbush plantation, and wherein 1 is the blank group; 2 are Tartar's saltbush group.
The specific embodiment
The present invention is selected from Karamay City multi-form agriculture agricultural land soil (0-20cm), and the Kelamayi System in Agricultural Developing Zone is located in the paleo-manas lake lacustrine plain, and soil forms as untainted cleaning contrast soil with deep densification, fluid-tight red heavy soil matter;
Oil pollution soil is taken near the little long-term petroleum-polluted soil (0-20cm) of oil-producing region abandoned well that turns of Karamay City, after oil pollution soil places the ventilating and cooling place air-dry, cross the 2mm sieve, by a certain percentage with itself and the native mixing and stirring of cleaning contrast, be mixed with oil content and be respectively 0(blank group), 0.5%(5,000mg/kg), 1% (10,000mg/kg), 1.5% (15,000mg/kg) with 2% (20,000mg/kg) test of totally 5 mass fraction concentration gradients is with native, and each is processed and repeats 3 times; Cleaning contrast soil, the native basic physical and chemical (seeing Table 1) of oil pollution adopt conventional method to measure.Test is provided with blank sample (namely do not have the preparation of planting plants after oil-polluted soils sample) simultaneously;
The method of the invention: the little township of turning carries out pot experiment in the Kelamayi:
To the early and middle ten days in October, select the vigorous strain clump of growth by the end of September, harvest maturity is seed preferably, plants the higher moisture-sensitive of skin salt content, must preserve by the relatively dry environment, at 4 ℃ of Refrigerator stores of temperature;
Adopt hole plate seedling growth, the Tartar's saltbush Seed Points that stores is sowed in the dish soil of the free of contamination cave of nature, cover the 1-2mm fine sand in the cave panel surface, regularly spray water makes soil surface keep moistening, plant that (back cut diameter is 26cm in the basin that after 15 days seedling replanting is entered to be equipped with the 5kg oil-polluted soils, base diameter is 18cm, and height is 21cm), ridging highly is 16cm, test every basin and plant 3 strain seedling, thinning is 1 strain/basin after its growth is stable;
The soil basin that transplanting Tartar saltbush seedling is contained oil pollution moves to outdoor, simultaneously, not Plants contrast basin of 3 basins is set, and growing period with the running water pouring, regularly waters respectively, make soil moisture content remain on 30%, simultaneously, in time extract weeds in the basin, as disease and pest occurs, spraying insecticide is controlled, and guarantees the plant normal growth;
Plantation Tartar saltbush in oil-polluted soils, the Tartar saltbush utilizes total petroleum hydrocarbons content in himself rhizosphere and the coexistence microorganism system combined degradation soil thereof, after 120 days growth and maturity of plant transplantation plantation, plant integral body from contaminated soil is removed, the Plant samples of results is divided into aerial part and under ground portion, fully wash to remove earth and the mud that adheres on the plant sample with running water respectively, and then use deionized water rinsing, drain moisture, under 65 ℃ of temperature, dry to constant weight, and respectively to plant height, bright root is heavy, the plant fresh weight, plant dry weight and chlorophyll are measured; Employing EPA 3550 recommend methods (Xie Chongge. the analytical technology [M] of environment PetroChina Company Limited. pollutant. Beijing: China Environmental Science Press, 1987.) measure total petroleum hydrocarbons content in the soil, obtain the clearance of total petroleum hydrocarbon in the soil, and then repeat continuously to plant Tartar saltbush plant, until reaching environmental safety standard, the total petroleum hydrocarbons content in the soil gets final product.
To the early and middle ten days in October, select the vigorous strain clump of growth by the end of September, harvest maturity is seed preferably, plants the higher moisture-sensitive of skin salt content, must preserve by the relatively dry environment, at 4 ℃ of Refrigerator stores of temperature;
Adopt hole plate seedling growth, the Tartar's saltbush Seed Points that stores is sowed in the dish soil of the free of contamination cave of nature, cover the 1-2mm fine sand in the cave panel surface, regularly spray water makes soil surface keep moistening, when treating plant height 7-10cm seedling replanting is entered to be equipped with that (back cut diameter is 26cm in the basin of 5kg oil-polluted soils, base diameter is 18cm, and height is 21cm), ridging highly is 18cm, test every basin and plant 3 strain seedling, thinning is 1 strain/basin after its growth is stable;
The soil basin that transplanting Tartar saltbush seedling is contained oil pollution moves to outdoor, simultaneously, not Plants contrast basin of 3 basins is set, and growing period with the running water pouring, regularly waters respectively, make soil moisture content remain on 40%, simultaneously, in time extract weeds in the basin, as disease and pest occurs, spraying insecticide is controlled, and guarantees the plant normal growth;
Plantation Tartar saltbush in oil-polluted soils, the Tartar saltbush utilizes total petroleum hydrocarbons content in himself rhizosphere and the coexistence microorganism system combined degradation soil thereof, after 120 days growth and maturity of plant transplantation plantation, plant integral body from contaminated soil is removed, the Plant samples of results is divided into aerial part and under ground portion, fully wash to remove earth and the mud that adheres on the plant sample with running water respectively, and then use deionized water rinsing, drain moisture, under 65 ℃ of temperature, dry to constant weight, and respectively to plant height, bright root is heavy, the plant fresh weight, plant dry weight and chlorophyll are measured; Employing EPA 3550 recommend methods (Xie Chongge. the analytical technology [M] of environment PetroChina Company Limited. pollutant. Beijing: China Environmental Science Press, 1987.) measure total petroleum hydrocarbons content in the soil, obtain the clearance of total petroleum hydrocarbon in the soil, and then repeat continuously to plant Tartar saltbush plant, until reaching environmental safety standard, the total petroleum hydrocarbons content in the soil gets final product.
Result of the test is as follows:
The Tartar saltbush is to petroleum hydrocarbon contaminated tolerance under the different disposal concentration:
Referring to table 2 as can be known, pollute under the processing in difference, the biomass of Tartar saltbush is different, when petroleum hydrocarbon contaminated concentration is 0.5%, the Tartar saltbush has demonstrated stronger tolerance to pollutant, compare with blank, petroleum hydrocarbon has certain promotion to the growth of Tartar saltbush, and its growth indexes is all greater than blank; When petroleum hydrocarbon contaminated concentration＞0.5% and along with the rising of pollutant levels, petroleum pollution has obvious inhibitory action to the Tartar saltbush, its growth indexes is and declines to a great extent;
The degradation rate of total petroleum hydrocarbon under the different disposal concentration:
Behind 120 days potted plant repairing test, what plantation Tartar saltbush was organized is that the petroleum hydrocarbon degradation rate is 1.87-2.21 times of blank group, although the reduction of soil petroleum pollution residual quantity is the coefficient result of soil physics, chemistry and bioprocess, the blank under the same treatment condition has been got rid of the impact of volatilization, leaching and photodissociation etc.; Although Fig. 1 shows the pure degraded to a certain degree of oil-polluted soils, the repairing effect of Tartar saltbush still acts on significantly.Because Tartar's saltbush root system can improve contaminated soil retention ability and microbial activity, accelerate edaphon to the biodegradation of petroleum pollution, thereby improve soil PetroChina Company Limited. removal of pollutants rate, be conducive to the phytoremediation of petroleum hydrocarbon degradation and contaminated soil.
Claims (1)
1. method of utilizing halophytes Tartar saltbush remedying oil-polluted soils is characterized in that following these steps to carrying out:
A, seed collecting and preservation: to the early and middle ten days in October, select the vigorous strain clump of growth by the end of September, harvest maturity is seed preferably, at 4 ℃ of Refrigerator stores of temperature;
B, grow seedlings and transplant: adopt hole plate seedling growth, the Tartar's saltbush Seed Points that stores is sowed in the dish soil of the free of contamination cave of nature, cover the 1-2mm fine sand in the cave panel surface, the timing spray water, make soil surface keep moistening, plant after 15 days or plant height 7-10cm with Tartar's saltbush seedling replanting in the basin of oil-polluted soils, earthing up highly is 16-18cm, test every basin and plant 3 strain seedling, thinning is 1 strain/basin after its growth is stable;
C, field management: the oil-polluted soils flowerpot that will plant Tartar saltbush seedling moves to outdoor, regularly waters, and makes soil moisture content remain on 30-40%;
D, repair process: after 120 days growth and maturity of plant transplantation plantation, plant integral body from contaminated soil is removed, adopt EPA 3550 recommend methods to measure total petroleum hydrocarbons content in the soil, obtain the clearance of total petroleum hydrocarbon in the soil, and then repeat continuously planting plants, until reaching environmental safety standard, the total petroleum hydrocarbons content in the soil gets final product.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1762192A (en) * | 2005-10-26 | 2006-04-26 | 张春银 | Method for planting a kind of halophyte-Atriplex triangularis |
| CN1853808A (en) * | 2005-04-26 | 2006-11-01 | 天津市环境保护科学研究院 | Fast cheap ecological re-construction of concentrated sea saline soil |
| CN102091715A (en) * | 2009-12-11 | 2011-06-15 | 中国科学院沈阳应用生态研究所 | Method for remediating oil-contaminated soil by using gaillardia aristata pursh flower plants |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853808A (en) * | 2005-04-26 | 2006-11-01 | 天津市环境保护科学研究院 | Fast cheap ecological re-construction of concentrated sea saline soil |
| CN1762192A (en) * | 2005-10-26 | 2006-04-26 | 张春银 | Method for planting a kind of halophyte-Atriplex triangularis |
| CN102091715A (en) * | 2009-12-11 | 2011-06-15 | 中国科学院沈阳应用生态研究所 | Method for remediating oil-contaminated soil by using gaillardia aristata pursh flower plants |
Non-Patent Citations (2)
| Title |
|---|
| 王传远等: "黄河三角洲生态区土壤石油污染及其对碱蓬萌发的生态影响", 《生态环境学报》, vol. 19, no. 04, 31 December 2010 (2010-12-31), pages 782 - 785 * |
| 邓皓等: "含盐油田土壤上盐生植物的生长及耐盐性研究", 《化学与生物工程》, vol. 27, no. 12, 31 December 2010 (2010-12-31), pages 80 - 82 * |
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Application publication date: 20130306 Assignee: Xinjiang Wo Fu Xinsheng Biotechnology Co.,Ltd. Assignor: Xinjiang Institute of ecology and geography, Chinese Academy of Sciences Contract record no.: 2019650000001 Denomination of invention: Method for restoring petroleum-contaminated soil by utilizing halophyte atriplex tatarica Granted publication date: 20140101 License type: Common License Record date: 20190717 |
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