CN101934287A - Method for remediation of phosphorus-contaminated soil - Google Patents
Method for remediation of phosphorus-contaminated soil Download PDFInfo
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- CN101934287A CN101934287A CN 201010207510 CN201010207510A CN101934287A CN 101934287 A CN101934287 A CN 101934287A CN 201010207510 CN201010207510 CN 201010207510 CN 201010207510 A CN201010207510 A CN 201010207510A CN 101934287 A CN101934287 A CN 101934287A
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- polygonum hydropiper
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Abstract
The invention relates to a bioremediation method for phosphorus contamination, in particular to a method for remediation of phosphorus-contaminated soil, which comprises the following steps of: growing polygonum hydropiper in the phosphorus-contaminated soil; directly transplanting the polygonum hydropiper or directly sowing seeds of the polygonum hydropiper for growth; and regularly harvesting the overground part of the planted polygonum hydropiper. By utilizing the phosphorus enriching characteristic of the polygonum hydropiper, the polygonum hydropiper is grown in the soil, absorbs the phosphorus accumulated in the soil, and transfers most of phosphorus to the overground part so as to fulfill the aim of remediation of the phosphorus-contaminated soil. The polygonum hydropiper has vigorous vitality, is easy to survive, and does not need special management in the growing process, so the cost is low, and the operability is high. Meanwhile, the polygonum hydropiper has traditional Chinese medicinal effect of treating acute filthy disease stomachache, vomiting and diarrhea and spasm of calf, diarrhea, dysentery, rheumatism, dermatophytosis, carbuncle, mange, traumatic injury and the like, so the resource can be fully and reasonably utilized and is multipurpose.
Description
Technical field
The present invention relates to the biological renovation method that phosphorus pollutes, be specially a kind of method of repairing phosphor polluted soil.
Background technology
Phosphorus is as the important nutrient of plant growth; its under-supply normal growth that usually can limit plant in the natural ecosystems; because mainly being the form with phosphate radical, the phosphorus that can be utilized in the soil exists; and phosphate radical metal ion easy and in the soil combines the formation precipitation; cause can utilize phosphorus in the soil content seldom; can not satisfy the needs of plant, this just requires a large amount of phosphate fertilizer of essential input in the agricultural production process.Because also very easily by adsorption by soil, fixing and mineralising, the utilization rate of phosphate fertilizer only is 10%-20% to the chemical phosphatic ferfilizer that is manured into soil usually, all the other then are trapped in the soil temporarily or chronically, not only caused the waste of nutrient resource but also strengthened the risk of environmental pollution.Based on the dual-pressure of the utilization of resources and environmental protection, how reclaiming excessive phosphorus element from soil has become one of resource environment field hot issue.The phytoremediation technology that grows up as far back as phase early 1980s is to utilize plant to repair a kind of emerging green bio technology of contaminated environment.Studies show that, absorption by plant, volatilization, root filter, degraded, effect such as stable, can not destroy ecological environment of soil, keep under the situation of soil texture and microbial activity, reach the purpose of environment purification, thereby compare with general physics, chemistry and engineering measure, phytoremediation technology is that a kind of cost is low, instant effect and eco-friendly recovery technique.The phosphorus of selecting the phosphorus super enriching plant to reclaim, purify in the soil not only can reduce the accumulation of phosphorus in soil, alleviate phosphorus and enter the various pollution ecological effects that natural water causes, phosphorus-rich plant after gathering in the crops simultaneously can be used as a kind of green manure resource again and continues to put in the middle of the agricultural production, and this has also produced positive effect to benign cycle and the sustainable development of agriculture of safeguarding the ecosystem when accelerating the plain biological cycle of phosphorus.Phosphorus has only by the absorption of the adsorption and sedimentation of particle or microorganism to be removed, but these methods are not that phosphorus is removed from soil, but soluble state phosphorus is become another form and is present in the environment from a kind of modality conversion.At present, also do not have a kind of simple method from the soil phosphorus pollution environment, to remove phosphorus at all,, need expend a large amount of financial resources and material resources if adopt the phosphorus in the methods removal soil such as chemistry and physics.
At present, the methods that adopt prevention and cure of pollution and engineering measure to combine in the governance process of phosphor polluted soil with the phosphorus in rubble that scribbles ferriferous oxide and the brick absorption soil more.But this improvement method is the cost height not only, and can not fundamentally solve the phosphorus pollution problem, is greatly limited in actual applications.
Summary of the invention
The present invention provides cost low, workable a kind of method of repairing phosphor polluted soil just at above technical problem.
Concrete technical scheme of the present invention is as follows:
A kind of method of repairing phosphor polluted soil is planted water pepper in the phosphorus contaminated soil; The water pepper of being narrated directly planted or with its seed sowing growth; The water pepper of plantation is carried out the aerial part of regular toothing harvesting plant; Water pepper does not need to carry out special management in its growth course, thereby cost is very low, workable.
Water pepper all has distribution in the most of area of China, and vitality is very vigorous, easily survives, and can directly transplant or seed sowing be grown; Can survive under field conditions (factors), in its whole growth process, not need to carry out special management.Can reduce the content of phosphorus in the soil effectively, thereby reach the reparation contaminated soil by the aerial part of harvesting plant.
Technique effect of the present invention shows: the present invention utilizes the enriched character of water pepper to phosphorus, it is planted in soil, and the phosphorus in the absorption and accumulation soil, and its major part is transported to aerial part, to reach the purpose that rehabilitating soil phosphorus pollutes; Because water pepper vitality is vigorous, easily survives, and do not need to carry out special management in its growth course, thereby cost is very low, workable.Simultaneously, water pepper also has the dirty stomachache of the acute diseases such as cholera and sunstroke of controlling, vomit and diarrhoea have a cramp, has loose bowels, aspect herbal functions such as dysentery, rheumatism, beriberi, carbuncle swell, mange, traumatic injury, abundant reasonable use resource, one-object-many-purposes.
The specific embodiment
Below in conjunction with the specific embodiment invention is described further.
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.Replacement and the change made according to ordinary skill and customary means, all within the scope of the present invention.
Embodiment 1
Present embodiment is a kind of method of repairing phosphor polluted soil, and the concrete practice is:
Sample region is positioned at red Bai Zhenjin river, Shifang City phosphorus ore, and (respectively at seedling stage, at the florescence, the phosphorus content in the plant has been analyzed in the maturity period sampling for 104 ° of 50 ' E, 30 ° 25 ' N) (one of China's four big phosphorus ores).The result shows that water pepper (Polygonum hydropiper) is in mine soil, and the phosphorus content in its body is bigger, and the phosphorus content in its body of florescence has reached 8.59g kg
-1Use for reference the screening index of heavy metal accumulation plant, we can select the overground part phosphorus content for use, the phosphorus cumulant, and four indexs of transfer ratio and concentration coefficient are carried out the screening of phosphorus enriching plant.The unnecessary phosphorus element that utilizes phytoremediation technology successfully to remove in the soil should satisfy the phosphorus content that this plant shoot phosphorus content will be higher than common plant, reaches 10g kg
-1Though the overground part phosphorus content of water pepper only is 8.54g kg
-1,＜10g kg
-1(DW), but the transfer ratio of water pepper phosphorus＞1, and concentration coefficient is also apparently higher than other plant.Simultaneously the biomass of water pepper is higher, and the overground part cumulant of phosphorus is big, more helps plant and removes phosphorus in the soil.Therefore, water pepper can be used as the phosphorus rehabilitation plant.
Embodiment 2
Present embodiment is experiment material with the water pepper, further verifies advantage and the corresponding physiological mechanism thereof that its rehabilitating soil phosphorus pollutes by indoor pot experiment.
Take from Yucheng District Daxing, Ya'an town moisture soil (1-10cm) for examination soil, soil is crossed the 2mm sieve after rejecting stone standby.Soil pH is 7.29, full phosphorus 1.01g kg
-1, rapid available phosphorus 13.96mg kg
-1, available potassium 63.53mg kg
-1, quick-acting nitrogen 68.93mg kg
-1Quick-acting nitrogen of soil and quick-acting potassium content and mine soil are comparatively approaching.Testing accurate weighing 6kg soil packs in the Plastic Drum of 5L.4 phosphorus levels are established in test altogether, are respectively 0,50,100 and 200mg P kg
-1, promptly 0,0.57,1.15 and 2.30g pot
-1, phosphate fertilizer is KH
2PO
4, not execute phosphorus in contrast, four repetitions, district's group arrangement at random.The available phosphorus contents of the setting of phosphorus concentration and mining area soil is close.Sample time is for after being 8 weeks and 12 weeks, consistent with the time of open-air screening test, phosphorus content and physiological and biochemical property (superoxide dismutase (SOD) thereof to different times in the plant, peroxidase (POD), catalase (CAT), lipid peroxidation product (MDA)) analyze.
The result shows: after 8 weeks of growing, water pepper blade phosphorus content significantly increases along with the increase of soil phophorus concentration, and its blade phosphorus content is 3.15-5.42g kg
-1(DW).Along with prolong breeding time, the biomass of water pepper all is increase trend, after 12 weeks of growing, at 50mg P kg
-1The time, its biomass content reaches maximum.And water pepper overground part phosphorus cumulant sharply increases, for the 3-5 of contrast doubly.The overground part phosphorus content of water pepper does not reach 8.54g kg
-1Because the content of tatal phosphorus of pot experiment soil only is 1% of a mining area soil content of tatal phosphorus, soil can not can absorb the phosphorus element for plant provides endlessly, cause the plant shoot phosphorus content not as rye grass overground part phosphorus content height, but water pepper can be used as potential phosphorus rehabilitation plant.
Plant under normal operation, the generation and the removing of intracellular reactive oxygen are in dynamic balance state, the free radical level is low, can not injure cell, and environment stress such as water stress, salt stress, ultraviolet damage, pathogen invasion etc. may be broken this balance, cause the excess accumulation of free radical.One of murder by poisoning of excessive free radicals is to cause or the aggravation peroxidation of membrane lipids, causes the cell membrane system damage, disturb plant cell photosynthetic, breathe and other metabolic process, can cause plant cell death when serious.For fear of oxidative stress, plant self has a cover antioxidase system and eliminates unnecessary active oxygen.SOD, CAT and POD are the important members of this enzyme system, and SOD can be ultra-oxygen anion free radical (O
2-) resolve into O
2And H
2O
2, CAT can be further H
2O is degraded into H
2O and O
2POD also has removing H
2O
2Function, can also be oxidized to innocuous substance to some noxious materials that form under the adverse circumstance, thereby play protective effect plant.MDA is the important products of film lipid peroxidation.MDA can be crosslinked with protein, nucleic acid, amino acid isoreactivity material, forms insoluble compound (lipofuscin) deposition, and the normal vital movement of interference cell is the extremely harmful group of pair cell vital movement, so be widely used as weighing the snperoxiaized index of film fat.This result of study shows that water pepper blade SOD, POD and CAT enzymatic activity increase along with the increase of soil phophorus concentration, at 100mg P kg
-1The time, the POD activity reaches maximum, at 200mg P kg
-1The time, SOD and CAT activity reach maximum, and MDA content reduces along with the increase of phosphorus concentration, water pepper is described since long term growth in the phosphorus ore environment, stronger to the endurance of soil phophorus, have stronger anti-oxidative damage ability and to the membrane damage self-repairing capability.Therefore, in the growing environment of high concentration phosphorus,, in environment remediation, has remarkable advantages because it has stronger degeneration-resistant mechanism.
Claims (3)
1. a method of repairing phosphor polluted soil is characterized in that: plant water pepper in the phosphorus contaminated soil.
2. a kind of method of repairing phosphor polluted soil according to claim 1 is characterized in that: the water pepper of being narrated is directly planted or with the growth of its seed sowing.
3. a kind of method of repairing phosphor polluted soil according to claim 1 is characterized in that: the aerial part that the water pepper of plantation is carried out regular toothing harvesting plant.
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| CN 201010207510 CN101934287A (en) | 2010-06-23 | 2010-06-23 | Method for remediation of phosphorus-contaminated soil |
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| CN 201010207510 CN101934287A (en) | 2010-06-23 | 2010-06-23 | Method for remediation of phosphorus-contaminated soil |
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| CN101934287A true CN101934287A (en) | 2011-01-05 |
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| CN 201010207510 Pending CN101934287A (en) | 2010-06-23 | 2010-06-23 | Method for remediation of phosphorus-contaminated soil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153203A (en) * | 2011-02-18 | 2011-08-17 | 四川农业大学 | Method for repairing phosphorus polluted water body by using polygonum hydropiper |
| CN106345798A (en) * | 2016-08-25 | 2017-01-25 | 杭州大地环保工程有限公司 | Treatment method of yellow phosphorus-contaminated soil |
| CN111763516A (en) * | 2020-07-07 | 2020-10-13 | 天津农学院 | Soil restoration conditioner for greenhouse phosphorus-rich polluted vegetable field as well as preparation method and application of soil restoration conditioner |
| CN115228921A (en) * | 2022-06-14 | 2022-10-25 | 安徽大学 | Method for repairing light and medium cadmium-polluted rice field soil by using polygonum hydropiper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833789A (en) * | 2005-03-17 | 2006-09-20 | 中国科学院生态环境研究中心 | Repairing method of phosphor polluted soil |
-
2010
- 2010-06-23 CN CN 201010207510 patent/CN101934287A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833789A (en) * | 2005-03-17 | 2006-09-20 | 中国科学院生态环境研究中心 | Repairing method of phosphor polluted soil |
Non-Patent Citations (1)
| Title |
|---|
| 《Journal of Hazardous Materials》 20091231 Guangli Xiao et.al. Uptake and accumulation of phosphorus by dominant plant species growing in a phosphorus mining area 第542-550页 1-3 , 第171期 2 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153203A (en) * | 2011-02-18 | 2011-08-17 | 四川农业大学 | Method for repairing phosphorus polluted water body by using polygonum hydropiper |
| CN106345798A (en) * | 2016-08-25 | 2017-01-25 | 杭州大地环保工程有限公司 | Treatment method of yellow phosphorus-contaminated soil |
| CN106345798B (en) * | 2016-08-25 | 2019-07-12 | 中节能大地（杭州）环境修复有限公司 | A kind of processing method by yellow phosphorus contaminated soil |
| CN111763516A (en) * | 2020-07-07 | 2020-10-13 | 天津农学院 | Soil restoration conditioner for greenhouse phosphorus-rich polluted vegetable field as well as preparation method and application of soil restoration conditioner |
| CN111763516B (en) * | 2020-07-07 | 2021-09-17 | 天津农学院 | Soil restoration conditioner for greenhouse phosphorus-rich polluted vegetable field as well as preparation method and application of soil restoration conditioner |
| CN115228921A (en) * | 2022-06-14 | 2022-10-25 | 安徽大学 | Method for repairing light and medium cadmium-polluted rice field soil by using polygonum hydropiper |
| CN115228921B (en) * | 2022-06-14 | 2023-05-30 | 安徽大学 | Method for repairing light and medium cadmium-polluted paddy field soil by utilizing polygonum hydropiper |
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Open date: 20110105 |