CN101074143A - Method for extracting zinc from sludge continuouslly and restoring zinc pollution in soil by purple Jasmine - Google Patents
Method for extracting zinc from sludge continuouslly and restoring zinc pollution in soil by purple Jasmine Download PDFInfo
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- CN101074143A CN101074143A CNA2006100354834A CN200610035483A CN101074143A CN 101074143 A CN101074143 A CN 101074143A CN A2006100354834 A CNA2006100354834 A CN A2006100354834A CN 200610035483 A CN200610035483 A CN 200610035483A CN 101074143 A CN101074143 A CN 101074143A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
A method for extracting zinc from sludge continuously and repairing zinc pollution in soil by Mirabilis jalapa L. is carried out by taking Mirabilis jalapa L. for enriching Zinc heavy metal as material, absorbing while activating zinc in polluted soil, transferring upwardly above ground, forming upper part of Mirabilis jalapa L. into a certain of biomass live weight, reaping once a year, maintaining root tuber underground, keeping stubble for 2-3 joints, sprouting while growing in the next year and extracting continuously. It's efficient, convenient, safe and standard.
Description
Technical field
The present invention relates to environmental technology field, relate in particular to a kind of method of utilizing pale reddish brown jasmine (Mirabilis jalapa L.) continue to extract zinc in the mud and rehabilitating soil zinc pollution.
Technical background
The pollution of soil and mud toxic heavy metal in recent years becomes an outstanding environment and human health problems day by day.Dewatered sludge is the product after the municipal sewage treatment, and the annual in the world at present dewatered sludge amount that produces has surpassed 100,000,000 t.Contain other required nutritive substances of abundant organic matter, nitrogen, phosphorus, potassium and plant-growth in the mud.So agriculturalization of mud is one of effective way that solves a large amount of municipal sludges.Enter the heavy metal element that also has of soil with nutritive ingredient in the mud, zinc is exactly one of them.In addition, China has abundant zinc ore to produce resource, is rich in the natural weathering and the mining activities such as corresponding strip mining transformation, smelting of zinc ore body, and uses Chemicals such as chemical fertilizer, agricultural chemicals in a large number, has also caused heavy metal contaminations such as the large-area zinc in soil of China.The zinc of excessive exposure directly threatens human settlement and food safety, if enter human body in a large number by food chain, effects such as carcinogenic teratogenesis mutagenesis of tool and interference hormone jeopardize residents ' health and safety of livestock.
Current, can be for the main physics and chemistry repairing method of method and the biological restoration method of administering heavy metal pollution of soil
The physics and chemistry method has soil moved in to improve the original (soil removal and replacement) method, the precipitator method, drip-rinsing process, electrochemical process, magnetization method.These physics or chemical process respectively have its advantage, and cost is high, quantities more greatly, easily causes secondary pollution problems but generally all exist.
Biological process has microorganism and plant restoration method, and the local success of microorganism biological reparation only is confined to the degraded of some organic pollutants, handling metal pollutant, particularly is not effective in soil.Phytoremediation (phytoremediation) is the green recovery technique of a kind of emerging heavy metal contamination original position (in situ), plant extract technology (phytoextraction) as one of its core technology, develop into the research and application focus of environmental science, and caused the great attention of government, academia and business circles.
From current domestic and international plant extract technical study and practice progress, remain and need to solve following problem: (1) alternative plant variety that can enriching heavy metal zinc is less, and particularly the plant of region wide adaptability is few; (2) super enriching plant of recommended preferential use (hyperaccumulator), general biomass is on the low side, and the overall removal efficient of heavy metal is lower, also has problems such as strange land acclimatization simultaneously; (3) bioavailability of heavy metals (bioavailability) has much room for improvement in the contaminated soil; (4) from should being used for, the phytoremediation technology of developed country part has dropped into practical application, and has obtained environment, economic and social benefit preferably, and China still is in the starting stage, and correlation technique also is in laboratory or pilot scale stage.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing pale reddish brown jasmine (Mirabilis jalapa L.) continue to extract zinc in the mud and rehabilitating soil zinc pollution.
The pale reddish brown jasmine of zinc super enriching plant (Mirabilis jalapa L.) that the present invention is used originates in Central and South America, and at areas to the south, China the Changjiang river self-sow, more distribution can collect throughout the year, and its seed or piece root also easily germinate and breed.This pale reddish brown jasmine plant taxonomy feature is as follows:
1. pale reddish brown jasmine is a Caryophyllales, the Nyctaginaceae plant, and annual or perennial herb, high about 1 meter of plant, the thick 2～4cm of stem, majority have 5～6 branches, and joint expands outstanding, frangibility.Root is slightly fertile, taper shape or fusiform, and the crust taupe, south is commonly called as " going into the ground mouse ", and the flakey breakaway is arranged after drying, the naked eyes shape hole skin of as seen growing crosswise, inner meat white, opaque.
2. blade is avette or extensively avette to life, is about 3～10cm, the wide 3.5cm that reaches.
3. spend 1 to several to be gathered into the living cyme in top, every colored base portion all has 1 exanthium, is 5 and splits; Spend horn-likely, the footpath reaches 3.8cm; Calyx is petal-shaped, and is tubaeform, and tube length 4～6.5cm has red-purple, white, yellow and kind such as variegated, generally in the morning or bloom evening; The perianth tube length is hung slightly on ovary top and to be contracted, and top 5 is split; Stamen 5～6, isometric or overhanging with perianth; Ovary is upper, is oval, and Room 1 is arranged, and style is thread.
4. the achene subglobular has rib, is black when ripe, is commonly called as " little land mine ", deposits bract by the place and is wrapped.Seed is about 0.8cm, contains abundant white farinaceous endosperm.
The used pale reddish brown jasmine of the present invention (Mirabilis jalapa L.), its heavy metal zinc enrichment characteristics is as follows under the natural condition:
The enrichment of pale reddish brown jasmine overground part heavy metal zinc is: 328mg/kg (butt), underground part is: 76mg/kg (butt), overground part be greater than underground part, can gather in the crops the upperground part biomass and reach 11250kg/hm owing to whenever make
2(butt) is so index reaches concentration level.
Though pale reddish brown jasmine has above characteristic, for a long time, be not applied.Especially routinely extract pattern, especially a blank field.
The present invention is by the pale reddish brown jasmine of plantation, continue the zinc in extraction and activating soil or the mud, upwards transportation and transhipment arrive overground part simultaneously, treat that overground part forms certain biomass, the periodical reaping overground part, the preserve bottom, then can continue to extract, continue to shift a large amount of zinc in the soil, thereby through after a while extraction, connect underground root at last and gather in the crops together, thus the pollution of removing zinc in soil or the mud.
The concrete steps of the inventive method are as follows:
(1) soil of control zinc pollution or zinc-containing sludge pH are between 5.0～7.5; The actual potential of hydrogen of visible growth medium is regulated by mugineic acid or alkaline fertilizer (as lime);
(2) annual 2～March, the pale reddish brown jasmine plant seedling replanting of 3～5 leaves or live to by the soil of the zinc pollution of aforementioned requirement adjusting pH or apply in the soil of zinc-containing sludge with seed, piece root will be grown to;
Described pale reddish brown jasmine plant seedling can select for use self-sow on the south China the Changjiang river, directly transplants seedling to the soil of zinc pollution or execute in the soil of zinc-containing sludge.
Also can gather its seed and piece root carries out live or culturing and transplanting seedlings.When using seed seedling-raising, the condition of seed germination and seedling culture is: pale reddish brown jasmine seed was soaked in water 24 hours, open in dark place germination after 5～7 days, grow seedlings relative air humidity 70～90%, 18～25 ℃ of temperature in soil; Piece root rearing condition is: pale reddish brown jasmine piece root is embedded in the sand moisture content of drenching every day, relative air humidity 60～80%, 15～23 ℃ of temperature.
(3) annual 11～December of winter the periodical reaping overground part once, toothing 2～3 joints during the harvesting overground part, the pale reddish brown jasmine overground part of harvesting can be unified to handle, as in security landfill of garbage loading embeading district or burning; Stayed subterranean root in 1 year and grow sprouting, suitably thinning behind the seed sprouting in the ground that drops allows pale reddish brown jasmine continue growth, continues the pale reddish brown jasmine overground part of harvesting, reaches safety standards up to soil or the zinc executed in the mud soil.
The present invention's outstanding feature technically is to have adopted lasting extraction pattern, the technical barriers such as condition control in the pale reddish brown jasmine practical application have been solved, make the practical application of this technology become possibility, and to have set up the reparation pattern be green original position reparation, therefore have following outstanding effect:
1. the selected pale reddish brown jasmine of the present invention can surpass enriching heavy metal zinc, is applied to plant extract contaminated soil or mud zinc, and cost is low, the remediation efficiency height, and potential economic benefit is considerable; And easily breeding, easily form the mcroorganism amount, characteristics such as disease and insect resistance, perennation are suitable for the plant extract of contaminated soil or mud zinc;
2. according to the lasting extraction pattern of the inventive method, simplified the program of rehabilitating soil or mud zinc pollution, be suitable for applying;
3. the reparation pattern of the present invention's foundation is green original position reparation, the overground part of being gathered in the crops is concentrated security landfill or burning, can not cause secondary pollution, repair process simultaneously and can not destroy ecological environment of soil, and help to improve soil and descend because of Soil degradation and the productivity that heavy metal contamination causes, recover also to improve the soil organisms diversity, can make it reach agriculturalization emission standard the extraction of mud zinc.
Embodiment
The invention will be further described by the following examples.
Embodiment 1: soil remediation
In the 2-3 month with pale reddish brown jasmine seed broadcasting in smooth nursery, land for growing field crops, cover fine sand or earth, relative air humidity 70～90%, 20 ℃ of temperature.Treat that pale reddish brown ase in Jasmine seedlings grows to 3～5 leaves, be transplanted into heavy-metal contaminated soil, heavy metal-polluted soil zinc background content 〉=250mg/kg keeps soil pH to 6～7.5,1 meter of line-spacing, 0.5 meter of spacing in the rows.Grow and gathered in the crops overground part in 10 months, toothing 2～3 joints.The pale reddish brown jasmine that gather in the crops the first time, overground part heavy metal zinc content 〉=328mg/kg (dry weight) after measured, pale reddish brown jasmine continues growth, continues to extract zinc in soil, continue the pale reddish brown jasmine overground part of harvesting, zinc content in the soil constantly reduces, reduce to normal soil level, zinc in soil abatement of pollution up to soil zinc in contaminated field content.
Embodiment 2: soil remediation
In the 2-3 month with pale reddish brown jasmine seed broadcasting in heavy-metal contaminated soil, cover fine sand or earth, relative air humidity 70～90%, 20 ℃ of temperature.Heavy metal-polluted soil zinc background content 〉=250mg/kg keeps soil pH to 6～7.5.Treat that pale reddish brown ase in Jasmine seedlings grows to 3～5 leaves, keep 1 meter of line-spacing, 0.5 meter of spacing in the rows.Grow and gathered in the crops overground part in 10 months, toothing 2～3 joints.The pale reddish brown jasmine that gather in the crops the first time, overground part heavy metal zinc content 〉=328mg/kg (dry weight) after measured, pale reddish brown jasmine continues growth, continues to extract zinc in soil, continue the pale reddish brown jasmine overground part of harvesting, zinc content in the soil constantly reduces, reduce to normal soil level, zinc in soil abatement of pollution up to soil zinc in contaminated field content.
Embodiment 3: mud zinc extracts
Pale reddish brown jasmine piece root is embedded in the sand moisture content of drenching every day, relative air humidity 60～80%, 20 ℃ of temperature in the 2-3 month.Treat growth of seedling to 3～5 leaf, transplant that zinc content is the soil of 250mg/kg behind applying sludge, keep soil pH 5～6; 1 meter of line-spacing, 0.5 meter of spacing in the rows.Grew results overground part, toothing 2～3 joints 10 months.After measured, the pale reddish brown jasmine overground part heavy metal zinc content 〉=328mg/kg (dry weight) of results; Pale reddish brown jasmine continues to extract zinc, continues the pale reddish brown jasmine overground part of harvesting, and the mud zinc content that applies in the soil body constantly reduces, and reduces to normal level up to zinc content, and mud zinc reaches agriculturalization emission standard.
Embodiment 4: mud zinc extracts
Zinc content is in the soil of 250mg/kg after the 2-3 month pale reddish brown jasmine piece root being embedded in applying sludge, keeps soil pH 5～6, covers fine sand, the moisture content of drenching every day, relative air humidity 60～80%, 20 ℃ of temperature.Treat growth of seedling to 3～5 leaf, keep 1 meter of line-spacing, 0.5 meter of spacing in the rows.Grew results overground part, toothing 2～3 joints 10 months.After measured, the pale reddish brown jasmine overground part heavy metal zinc content 〉=328mg/kg (dry weight) of results; Pale reddish brown jasmine continues to extract zinc, continues the pale reddish brown jasmine overground part of harvesting, and the mud zinc content that applies in the soil body constantly reduces, and reduces to normal level up to zinc content, and mud zinc reaches agriculturalization emission standard.
Claims (5)
1. method of utilizing pale reddish brown jasmine continue to extract zinc in the mud and rehabilitating soil zinc pollution, concrete steps comprise:
(1) soil of control zinc pollution or zinc-containing sludge pH are between 5.0～7.5;
(2) annual 2～March, with pale reddish brown jasmine plant implant by aforementioned requirement regulate pH zinc pollution soil or apply in the soil of zinc-containing sludge or live to by the soil of the zinc pollution of aforementioned requirement adjusting pH or apply in the soil of zinc-containing sludge with seed, piece root;
(3) annual 11～December of winter the periodical reaping overground part once, toothing 2～3 joints during the harvesting overground part, the pale reddish brown jasmine overground part of harvesting can be unified to handle, as in security landfill of garbage loading embeading district or burning; Stayed subterranean root in 1 year and grow sprouting, suitably thinning behind the seed sprouting in the ground that drops allows pale reddish brown jasmine continue growth, continues the pale reddish brown jasmine overground part of harvesting, reaches safety standards up to soil or the zinc executed in the mud soil.
2. according to the described method of utilizing pale reddish brown jasmine continue to extract zinc in the mud and rehabilitating soil zinc pollution of claim 1, it is characterized in that in the described step (2) it being to select the pale reddish brown jasmine plant of self-sow on the south China the Changjiang river for use, with the pale reddish brown jasmine plant seedling that grows to 3～5 leaves directly transplant seedling require to regulate to (1) set by step pH zinc pollution soil or apply in the soil of zinc-containing sludge.
3. according to the described method of utilizing pale reddish brown jasmine continue to extract zinc in the mud and rehabilitating soil zinc pollution of claim 1, when it is characterized in that in the described step (2) with pale reddish brown jasmine seed seedling-raising, the condition of seed germination and seedling culture is generally: pale reddish brown jasmine seed was soaked in water 24 hours, open in dark place germination after 5～7 days, in soil, grow seedlings, relative air humidity 70～90%, 18～25 ℃ of temperature.
4. according to the described method of utilizing pale reddish brown jasmine continue to extract zinc in the mud and rehabilitating soil zinc pollution of claim 1, it is characterized in that piece root rearing condition is in the described step (2): pale reddish brown jasmine piece root is embedded in the sand, the moisture content of drenching every day, relative air humidity 60～80%, 15～23 ℃ of temperature.
5. according to the described method of utilizing pale reddish brown jasmine continue to extract zinc in the mud and rehabilitating soil zinc pollution of one of claim 1 to 4, it is characterized in that regulating by mugineic acid or alkaline fertilizer in the described step (1) pH of soil.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100354834A CN100471586C (en) | 2006-05-16 | 2006-05-16 | Method for extracting zinc from sludge continuouslly and restoring zinc pollution in soil by purple Jasmine |
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| CNB2006100354834A CN100471586C (en) | 2006-05-16 | 2006-05-16 | Method for extracting zinc from sludge continuouslly and restoring zinc pollution in soil by purple Jasmine |
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| CN101074143A true CN101074143A (en) | 2007-11-21 |
| CN100471586C CN100471586C (en) | 2009-03-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153258A (en) * | 2010-12-02 | 2011-08-17 | 福建省农业科学院农业工程技术研究所 | Production technique for reducing content of heavy metals in municipal domestic sludge |
| CN103191911A (en) * | 2013-04-26 | 2013-07-10 | 南京林业大学 | Method for repairing earth heavy metal zinc pollution by utilizing rhizome of acuminate trivein fern |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482631A (en) * | 2018-12-29 | 2019-03-19 | 广西壮族自治区农业科学院农产品质量安全与检测技术研究所 | A method of Grown In Zinc Contaminated Soil and sludge are repaired using leaf aster is bored |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1187429C (en) * | 2003-07-03 | 2005-02-02 | 中国科学院华南植物研究所 | Method for repairing and improving acidified soil |
| CN100415395C (en) * | 2005-04-06 | 2008-09-03 | 东北师范大学 | Prepn and usage of plant repairing body for contaminated soil |
| CN100441325C (en) * | 2005-06-01 | 2008-12-10 | 中山大学 | Method for promoting plants to restore soil polluted by nickel through vesicularis pseudo unit cell bacterium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102153258A (en) * | 2010-12-02 | 2011-08-17 | 福建省农业科学院农业工程技术研究所 | Production technique for reducing content of heavy metals in municipal domestic sludge |
| CN103191911A (en) * | 2013-04-26 | 2013-07-10 | 南京林业大学 | Method for repairing earth heavy metal zinc pollution by utilizing rhizome of acuminate trivein fern |
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| CN100471586C (en) | 2009-03-25 |
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Granted publication date: 20090325 Termination date: 20120516 |