CN103203353B - Rattan melon vegetables and light-duty eluent is utilized to repair the method for moderate Cd contaminated soil - Google Patents
Rattan melon vegetables and light-duty eluent is utilized to repair the method for moderate Cd contaminated soil Download PDFInfo
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- CN103203353B CN103203353B CN201310024177.0A CN201310024177A CN103203353B CN 103203353 B CN103203353 B CN 103203353B CN 201310024177 A CN201310024177 A CN 201310024177A CN 103203353 B CN103203353 B CN 103203353B
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- rattan
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- 239000002689 soil Substances 0.000 title claims abstract description 53
- 235000013311 vegetables Nutrition 0.000 title claims abstract description 43
- 241000219112 Cucumis Species 0.000 title claims abstract description 42
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 title claims abstract description 41
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000003480 eluent Substances 0.000 title claims abstract description 31
- 241000345998 Calamus manan Species 0.000 title claims abstract description 29
- 235000012950 rattan cane Nutrition 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008439 repair process Effects 0.000 title claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 11
- 238000003306 harvesting Methods 0.000 claims abstract description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 22
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 8
- 239000001110 calcium chloride Substances 0.000 claims description 8
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 8
- 241000196324 Embryophyta Species 0.000 claims description 6
- 230000012010 growth Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 27
- 229910052751 metal Inorganic materials 0.000 abstract description 11
- 239000002184 metal Substances 0.000 abstract description 11
- 230000006378 damage Effects 0.000 abstract description 5
- 230000004913 activation Effects 0.000 abstract description 4
- 238000012271 agricultural production Methods 0.000 abstract description 4
- 239000003895 organic fertilizer Substances 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 235000013399 edible fruits Nutrition 0.000 abstract description 2
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 244000036905 Benincasa cerifera Species 0.000 description 5
- 235000011274 Benincasa cerifera Nutrition 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 239000011133 lead Substances 0.000 description 5
- 240000007124 Brassica oleracea Species 0.000 description 4
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 4
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 description 4
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 description 4
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 240000004244 Cucurbita moschata Species 0.000 description 2
- 235000009854 Cucurbita moschata Nutrition 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000003973 irrigation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000003971 tillage Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 235000000832 Ayote Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 235000009804 Cucurbita pepo subsp pepo Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 235000015136 pumpkin Nutrition 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 230000036642 wellbeing Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method utilizing rattan melon vegetables and light-duty eluent to repair moderate Cd contaminated soil.The method adopts plantation rattan melon vegetables and uses the method for eluent, growing vegetables and Soil leaching technical tie-up are got up, the heavy metal in soil is made to depart from the topsoil of damage to crops, less to the destruction of soil, can agricultural production be proceeded while repairing heavy metal pollution, thus realize the reparation of production limit, limit.Light-duty eluent adds the deep layer that the Cd part drip washing of agric can not reach to crop root by soil, and by adsorption by soil.Be leached the Cd of agent activation in rattan melon vegetables Root Absorption contaminated soil, but the Cd of activation is retained by long stem and a large amount of leaves usually, be seldom transported to edible part-fruit, the fruit vegetable of results is safe to eat; The vegetable waste part of harvesting can be used as organic fertilizer, and its content of beary metal meets fertilizer standard, can not cause secondary pollution.
Description
Technical field
The invention belongs to Cd contaminated soil processing technology field, particularly a kind of method utilizing rattan melon vegetables and light-duty eluent to repair moderate Cd contaminated soil.
Background technology
Along with industrial expansion, there is heavy metal pollution in various degree in countries in the world soil, the whole world discharges Mn1500 ten thousand tons, Pb500 ten thousand tons, Cu340 ten thousand tons, Ni100 ten thousand tons, Hg1.5 ten thousand tons every year on average.According to the national irrigating region investigation that the Ministry of Agriculture of China carries out, at about 1,400,000 hm
2irrigation District of Sewage in, suffer the land area of heavy metal pollution to account for 64.8% of Irrigation District of Sewage area, wherein slight pollution account for 46.7%, intermediate pollution account for 9.7%, severe contamination account for 8.4%.China is by nearly 2,000 ten thousand hm of cultivated area of the heavy metal pollutions such as cadmium, arsenic, chromium, lead
2, account for 1/5 of China's cultivated area, China has 1,200 ten thousand ton-grain foods to suffer heavy metal pollution every year, and the economic loss caused by the heavy metal pollution of agricultural product is increasing year by year, within 2000, has reached 32,000,000,000 yuans.After heavy-metal contaminated soil, not only directly damage to crops growth, and endanger human and livestock health by food chain.In recent years, by investigating the many cities of China such as the Suburb Soil Heavy Metal Pollutions such as Beijing, Shanghai, Guangzhou, Shenyang, result shows, these city suburbs soil are all by heavy metal pollution to a certain extent.According to the preliminary investigation display of geologic prospect department of Guangdong Province, at Zhujiang Estuary periphery about 10,000 km
2in scope, 8 kinds of element pollution areas such as cadmium, mercury, arsenic, copper, lead, nickel, chromium reach 5500km
2.Exceed standard event, water pollution event of the blood lead that heavy metal pollution causes is of common occurrence.It is reported, since 2008, there is the arsenic contamination accidents such as Dushan, guizhou county, Chenxi County, Hunan, Guangxi Hechi, Yunnan Yang Zonghai, Henan Dasha River, Linyi, Shandong in China in succession.2009, heavy metal pollution event caused 4035 human blood lead doping, 182 people's cadmiums exceed standard.Heavy metal pollution of soil has become one of major obstacles of restriction China's Agricultural international trade and Sustainable Socioeconomic Development, and therefore, restoration of soil polluted by heavy metal is a very urgent task.
At present, the reparation of heavy-metal contaminated soil mainly contains two kinds of approach: one is the existing forms changing heavy metal, makes its passivation, reduces its toxicity; Two is plants that plantation can absorb heavy metal, by Metal uptake to aerial part, is then removed by this plant, thus removal heavy metal.First method temporarily can reduce the toxicity of heavy metal, but thoroughly can not remove the heavy metal in soil, easily cause the secondary pollution of soil, and rehabilitation cost costly.Second method is through the green recovery technique of one that scientist's exploration and practice for many years finds, it can not the physicochemical property of spoiled soil, and can not produce secondary pollution, but simple phytoremediation generally needs the time of 3 years, and must interrupt agricultural production.Neither do not interrupt the heavy-metal contaminated soil restorative procedure that agricultural production can produce again the low cost quick in situ of income at present.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art and deficiency, a kind of method utilizing rattan melon vegetables and light-duty eluent to repair moderate Cd contaminated soil is provided.
Object of the present invention is achieved through the following technical solutions: a kind of method utilizing rattan melon vegetables and light-duty eluent to repair moderate Cd contaminated soil, adopt in contaminated land, plant rattan melon vegetables, at plant growth animated period light-duty eluent, soil carried out to drip washing, reduce soil Cd content by harvested vegetable and eluent, realize the reparation of moderate Cd contaminated soil, specifically comprise the following steps:
(1) in moderate Cd contaminated soil, rattan melon vegetables is planted;
(2) when rattan melon vegetables enters growth animated period, with light-duty eluent, drip washing is carried out to soil;
(3) rattan melon vegetables is gathered in the crops;
(4) step (1) ~ (3) are repeated, until the Cd concentration of soil is less than or equal to 0.3mg/kg;
In step (1):
Described rattan melon vegetables is joint melon (Benincasa hispida cogn var.chieh-qua How), pumpkin (Cucurbita moschata Duch) or wax gourd (Benincasa hispida Cogn), preferably saves melon (Benincasa hispida cogn var.chieh-qua How);
The described planting density of rising melon vegetables is conventional density, is preferably 40cm x30cm;
In step (2):
Described growth animated period is 30 ~ 50 days before the plant harvest phase, is preferably 40 days;
Described light-duty eluent adopts following methods to be prepared: citric acid and calcium chloride are added to the water, mix, be prepared into containing 0.05 ~ 0.20molL
-1citric acid+0.05 ~ 0.20molL
-1the mixed liquor of calcium chloride, obtains light-duty eluent;
Described light-duty eluent preferably adopts following methods to be prepared: citric acid and calcium chloride are added to the water, mix, be prepared into containing 0.10molL
-1citric acid+0.10molL
-1the mixed liquor of calcium chloride, obtains light-duty eluent;
The amount of application of described light-duty eluent is 30 ~ 70Lm
-2, be preferably 50Lm
-2;
In step (3), the rattan melon vegetables of results can eat as vegetables;
Invention mechanism of the present invention: the light-duty eluent of the present invention carries out drip washing to soil, light-duty eluent adds the deep layer that the Cd part drip washing of agric can not reach to crop root by soil, and by adsorption by soil.Be leached the Cd of agent activation in rattan melon vegetables Root Absorption contaminated soil, but the Cd of activation is retained by long stem and a large amount of leaves usually, be seldom transported to edible part-fruit, the fruit vegetable of results is safe to eat; The vegetable waste part of harvesting can be used as organic fertilizer, and its content of beary metal meets fertilizer standard (NY525-2002, Cd:3mg/kg), generally can not cause secondary pollution.
The present invention has following advantage and effect relative to prior art:
(1) the light-duty eluent of the present invention carries out drip washing to soil, makes the heavy metal in soil depart from the topsoil of damage to crops, less to the destruction of soil.
(2) the rattan melon vegetables selected by the present invention, have the feature of little accumulation heavy metal, the vegetables of results meet food hygienic standard; The content of beary metal at vegetable waste position meets Commodity Organic Fertilizer standard (NY525-2002), and the present invention creates certain economic well-being of workers and staff while restoration of soil polluted by heavy metal.
(3) growing vegetables and Soil leaching technical tie-up get up by the present invention, according to rattan melon vegetables and the light-duty drip washing coupling pattern of the inventive method, can proceed agricultural production while repairing heavy metal pollution, thus realize the reparation of production limit, limit.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
The present embodiment test is polluted vegetable plot and is carried out in Dongguan City, Guangdong Province, wherein heavy metal Cd content 0.4mg/kg exceedes national standard of soil environment quality (GB15618-1995);
(1) plantation rattan melon vegetables joint melon (Benincasa hispida cogn var.chieh-qua How is established altogether; Planting density 40cm x30cm) and joint melon+eluent 2 process, 3 repetitions are all set in each process, and (area of each repetition is as 0.8x20m
2);
(2) within first 40 days, carry out drip washing process at plant harvest, add 0.1molL
-1citric acid+0.1molL
-1caCl
2mixing eluent, by 50Lm
-2dosage apply;
(3) when rattan melon vegetables joint melon is ripe, results rattan melon vegetables overground part;
(4) by continuing plantation the 2nd melon in season after Soil tillage, no longer eluent is added; Gathered in the crops for the 2nd season and planted cabbage, to verify repairing effect by carrying out for the 3rd season after Soil tillage after melon;
The content of beary metal of the rattan melon vegetables joint melon and cauline leaf that measure (GB/T5009.15) is in table 1 and 2, and the content of beary metal of edible part meets national food hygienic standard, and cauline leaf part meets Commodity Organic Fertilizer standard.The content of beary metal of cabbage is in table 3, and the content of beary metal of cabbage meets national food hygienic standard, and it is safe that the soil illustrating after drip washing process carries out planting vegetable.Different disposal in table 4, carries out a drip washing and continuous planting plants to soil to the removal effect of Zn, Cd, Pb and Cu, and the full Cd content in soil decreases 28.4%, and full Zn content decreases 13.5%, has reached the quality standard that soil reaches required.
Content of beary metal (the mgkg of table 1 rattan first season melon vegetables joint melon
-1)
Content of beary metal (the mgkg of table 2 rattan second season melon vegetables joint melon and cauline leaf
-1)
Content of beary metal (the mgkg of table 3 the 3rd season cabbage
-1)
Change (the mgkg of heavy metal content in soil before and after the process of table 4 three season
-1)
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (3)
1. utilize rattan melon vegetables and light-duty eluent to repair a method for moderate Cd contaminated soil, it is characterized in that comprising the following steps:
(1) in moderate Cd contaminated soil, rattan melon vegetables is planted;
(2) when rattan melon vegetables enters growth animated period, with light-duty eluent, drip washing is carried out to soil;
(3) rattan melon vegetables is gathered in the crops;
(4) step (1) ~ (3) are repeated, until the Cd concentration of soil is less than or equal to 0.3 mg/kg;
Described light-duty eluent adopts following methods to be prepared: citric acid and calcium chloride are added to the water, mix, be prepared into containing 0.05 ~ 0.20 molL
-1citric acid+0.05 ~ 0.20 molL
-1the mixed liquor of calcium chloride, obtains light-duty eluent;
Rattan melon vegetables described in step (1) is joint melon;
The amount of application of described light-duty eluent is 30 ~ 70 Lm
-2.
2. the method utilizing rattan melon vegetables and light-duty eluent to repair moderate Cd contaminated soil according to claim 1, is characterized in that: the growth animated period described in step (2) is 30 ~ 50 days before the plant harvest phase.
3. the method utilizing rattan melon vegetables and light-duty eluent to repair moderate Cd contaminated soil according to claim 1, it is characterized in that: described light-duty eluent adopts following methods to be prepared: citric acid and calcium chloride are added to the water, mix, be prepared into containing 0.10 molL
-1citric acid+0.10 molL
-1the mixed liquor of calcium chloride, obtains light-duty eluent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310024177.0A CN103203353B (en) | 2013-01-22 | 2013-01-22 | Rattan melon vegetables and light-duty eluent is utilized to repair the method for moderate Cd contaminated soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310024177.0A CN103203353B (en) | 2013-01-22 | 2013-01-22 | Rattan melon vegetables and light-duty eluent is utilized to repair the method for moderate Cd contaminated soil |
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| CN103203353A CN103203353A (en) | 2013-07-17 |
| CN103203353B true CN103203353B (en) | 2015-09-30 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104307861A (en) * | 2014-11-05 | 2015-01-28 | 北京高能时代环境技术股份有限公司 | Remediation method of heavy metal-polluted soil |
| CN105598144B (en) * | 2016-03-22 | 2019-01-18 | 安徽工程大学 | A kind of restorative procedure of contaminated soil |
| CN105880270A (en) * | 2016-06-27 | 2016-08-24 | 中冶华天工程技术有限公司 | Heavy metal lead and antimony polluted soil remediation method |
| CN110144223B (en) * | 2019-04-29 | 2021-04-20 | 鲁东大学 | Cadmium-polluted brown soil green eluting agent and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1559711A (en) * | 2004-03-05 | 2005-01-05 | 中山大学 | Plant repairing method of agricultural land polluted by heavy metal |
| CN101279325A (en) * | 2008-04-22 | 2008-10-08 | 华南农业大学 | Method for repairing heavy metal polluted soil using combined technology of interacted plants and chemical leaching |
| CN102441562A (en) * | 2011-10-31 | 2012-05-09 | 西南科技大学 | Method for promoting broad bean in restoring and treating cadmium-polluted soil by using citric acid |
| CN102580988A (en) * | 2012-02-05 | 2012-07-18 | 浙江大学 | Method for repairing cadmium-dichlorodiphenyl trichloroethane composite polluted soil by utilizing pumpkins |
-
2013
- 2013-01-22 CN CN201310024177.0A patent/CN103203353B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1559711A (en) * | 2004-03-05 | 2005-01-05 | 中山大学 | Plant repairing method of agricultural land polluted by heavy metal |
| CN101279325A (en) * | 2008-04-22 | 2008-10-08 | 华南农业大学 | Method for repairing heavy metal polluted soil using combined technology of interacted plants and chemical leaching |
| CN102441562A (en) * | 2011-10-31 | 2012-05-09 | 西南科技大学 | Method for promoting broad bean in restoring and treating cadmium-polluted soil by using citric acid |
| CN102580988A (en) * | 2012-02-05 | 2012-07-18 | 浙江大学 | Method for repairing cadmium-dichlorodiphenyl trichloroethane composite polluted soil by utilizing pumpkins |
Non-Patent Citations (1)
| Title |
|---|
| 可溶性无机盐对土壤中福形态分布及生物可利用性的影响;王祖伟等;《农业环境科学学报》;20081231;第27卷(第3期);第887页第2栏第2-3行 * |
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