CN107052035A - A kind of ecological restoring method of heavy-metal contaminated soil - Google Patents

A kind of ecological restoring method of heavy-metal contaminated soil Download PDF

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Publication number
CN107052035A
CN107052035A CN201710453616.8A CN201710453616A CN107052035A CN 107052035 A CN107052035 A CN 107052035A CN 201710453616 A CN201710453616 A CN 201710453616A CN 107052035 A CN107052035 A CN 107052035A
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China
Prior art keywords
seed
grass
coloured amaranth
heavy
net
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Pending
Application number
CN201710453616.8A
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Chinese (zh)
Inventor
廖晓兰
张亚
黄璜
廖石榴
曹海佳
黄尧
苏品
马文月
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Hunan Agricultural University
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Hunan Agricultural University
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Priority to CN201710453616.8A priority Critical patent/CN107052035A/en
Publication of CN107052035A publication Critical patent/CN107052035A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/10Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • B09C1/105Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00In situ

Abstract

The present invention discloses a kind of ecological restoring method of heavy-metal contaminated soil.This method chooses three-coloured amaranth seed and turf seed, and the weight fraction ratio of three-coloured amaranth seed and turf seed is 1:1 10 is standby;The cauline leaf of grass is compiled as net double-deck and with cavity structure;Standby seed mixture is inserted to the hollow intracavitary of the net;The net laying that will be filled with seed mixture is located at culture in Hg As Ni combined contamination soils.The present invention prepares three-coloured amaranth culture module and grown in Hg As Ni combined contamination soils, reduces the content of mercury in soil and water resources, arsenic, nickel;It is suitable for being widely applied, three-coloured amaranth culture module has good landscape effect and solid native effect, both sides of highway, mercurous, arsenic, nickel production and the soil remediation using emphasis polluted places such as enterprises are particularly suitable for use in, soil remediation and the double effect of landscaping is had concurrently.

Description

A kind of ecological restoring method of heavy-metal contaminated soil
Technical field
The present invention relates to the soil method of three-coloured amaranth remediating heavy metal combined pollution, belong to environmental conservation plant rehabilitating soil skill Art field, specifically a kind of ecological restoring method of heavy-metal contaminated soil.
Background technology
Heavy metal density is in 4.5g/cm3More than, heavy metal can not be biodegradable, conversely but can food chain biology Under amplification, thousands of hundred times of ground enrichments finally enter human body.Heavy metal energy and protein and enzyme etc. in human body occur strong Interaction, them is lost activity, it is also possible to be accumulated in some organs of human body, cause slow poisoning, disturb human body Normal physiological function, is detrimental to health.
Due to mankind's activity, content of the minor metallic element in soil in soil exceed background value, excess deposition and Caused too high levels, cause eco-environmental quality to deteriorate.Heavy metal pollution of soil has become international great environmental problem. It is estimated that the annual toxic heavy metal up to millions of tons being discharged into environment in the whole world, wherein there is sizable part to pass through filling Irrigate water body and atmospheric sedimentation enters agricultural land soil, and the heavy metal pollution of soil of China is particularly acute.
Therefore it provides a kind of reduction heavy metal-polluted soil mercury, arsenic, the method for nickel contamination, efficiently reduce mercury in soils, arsenic, The amount of nickel, is a urgent problem to be solved in the art.
The content of the invention
The present invention proposes a kind of ecological restoring method of heavy-metal contaminated soil.
To achieve the above object, a kind of ecological restoring method of heavy-metal contaminated soil of the present invention, realizes step such as Under:
(1) three-coloured amaranth culture module is prepared;
(2) three-coloured amaranth culture module is planted in Hg-As-Ni combined contamination soils, the compound dirts of restoration of the ecosystem Hg-As-Ni Contaminate soil;
(3) maintenance management;
The step (1):
Three-coloured amaranth seed and turf seed are chosen, and the weight fraction ratio of three-coloured amaranth seed and turf seed is 1:1-10 is standby; The cauline leaf of grass is compiled as net double-deck and with cavity structure;Standby seed mixture is inserted in the net In cavity;
The step (2):
The net laying that will be filled with seed mixture is located in Hg-As-Ni combined contamination soils;
The step (3):
A, sod grass to during 6cm for the first time cut grass, cut grass and follow 1/3 principle, the height for the stubble left is 2-4cm, cut careless number of times according to Depending on turf seed growth situation, retain three-coloured amaranth germinating growth cauline leaf;
B, the amount of application that topdresses are 0.3-0.5kg N/100m2
C, when grass is turned green, pour water of turning green, with improve grass growth period.
The amount of the filling seed is 28-40g/ ㎡.
The net that the grass cauline leaf is weaved into soaks the Na by pH6.5 before filling seed2HPO4-KH2PO4Buffering Agent adds brassinosteroid and is made into concentration for 10-150umol/L solution as solvent.
When the sod grass highly reaches more than 10cm, lawn is trimmed;Even root harvesting grass after sowing time again Seed is filled in the net that the grass cauline leaf is weaved into, the cauline leaf collection under harvesting, trimming is concentrated after drying and carries out nothing Evilization processing.
The three-coloured amaranth seed, three-coloured amaranth is gathered in picking time, and sowing time is again in the grass family after even root harvesting three-coloured amaranth Filling seed in the net that plant stem-leaf is weaved into.
Following composition can also be filled in the net that the grass cauline leaf is weaved into:Organic materials:Stalk, peat, wood Bits, chicken manure, grass meal;Inorganic material:Lime, calcium magnesium phosphate, siliceous fertilizer, solid sulfate;One in the above-mentioned material of microorganism formulation Plant or several combinations, the filling total amount is 40-60g/ ㎡.
The selection is in all parts of the country when annual output is received, nothing is gone mouldy and damaged, and the three-coloured amaranth seed and turf seed of full grains will The seed picked out cleans both sides with ultra-pure water microwave resonance, removes after impurity and dust, is placed in 75wt% ethanol water Soak to be placed in after 30min, seed disinfection on aseptic filter paper in middle immersion 30s, the NaClO solution for then placing into 0.2wt% and drip It is dry standby.
Methods described is applied to repair Hg-As-Ni combined contamination soils.
The seed variety of the sod grass is Festuca Arundinacea.
A kind of ecological restoring method of heavy-metal contaminated soil of the present invention, its advantage is:It is prepared by the present invention Three-coloured amaranth culture module grows in Hg-As-Ni combined contamination soils, reduces the content of mercury in soil and water resources, arsenic, nickel;This hair Three-coloured amaranth, turf kind has been used in combination in bright technical scheme, takes short, and cost is low, and directly, quickly and efficiently reduce China Food safety risk caused by agricultural land soil mercury, arsenic, nickel contamination;And its is with strong points, simple to operate, low-cost, safe, fit Together in large scale application, three-coloured amaranth culture module has good landscape effect and solid native effect, is particularly suitable for use in highway two Side, mercurous, arsenic, nickel production and the soil remediation using emphasis polluted places such as enterprises, have soil remediation and the beautification of the environment concurrently Change double effect.
Embodiment
Embodiment 1
A kind of ecological restoring method of heavy-metal contaminated soil of the present invention, realizes that step is as follows:
(1) three-coloured amaranth culture module is prepared, described selection all parts of the country are gone mouldy and damaged when annual output receipts, nothing, full grains Three-coloured amaranth seed and turf seed, the seed that will be singled out clean both sides with ultra-pure water microwave resonance, remove after impurity and dust, put 30s is soaked in 75wt% ethanol water, 30min is soaked in the NaClO solution for then placing into 0.2wt%, seed disappears It is placed on aseptic filter paper and drains after poison, and the weight fraction ratio of three-coloured amaranth seed and turf seed is 1:1-10 is standby;By grass family The cauline leaf of plant is compiled as net double-deck and with cavity structure;Standby seed mixture, stalk, peat, wood chip are inserted into institute The hollow intracavitary of net is stated, the amount of the filling seed is 30g/ ㎡, and the filling stalk, peat, wood chip amount are 40g/ ㎡ grass The net that section's plant stem-leaf is weaved into soaks the Na by pH6.5 before filling seed2HPO4-KH2PO4Buffer adds oil as solvent Rape lactone is made into concentration for 150umol/L solution;
(2) three-coloured amaranth culture module is planted in Hg-As-Ni combined contamination soils, the compound dirts of restoration of the ecosystem Hg-As-Ni Soil is contaminated, the net laying that will be filled with seed mixture is located in Hg-As-Ni combined contamination soils;
(3) maintenance management,
A, sod grass cut grass and follow 1/3 principle, the height for the stubble left is 2cm to grass is cut for the first time during 6cm;Careless position is cut for the second time When sod grass highly reaches more than 10cm, lawn is trimmed;Sowing time is again in the grass family after even root harvesting grass Filling seed in the net that plant stem-leaf is weaved into, the cauline leaf collection under harvesting, trimming is concentrated after drying and carries out harmless treatment number of times According to depending on turf seed growth situation, retain three-coloured amaranth germinating growth cauline leaf;
B, the amount of application that topdresses are 0.4kg N/100m2
C, when grass is turned green, pour water of turning green, with improve grass growth period.
Embodiment 2
A kind of ecological restoring method of heavy-metal contaminated soil of the present invention, realizes that step is as follows:
(1) three-coloured amaranth culture module is prepared, described selection all parts of the country are gone mouldy and damaged when annual output receipts, nothing, full grains Three-coloured amaranth seed and turf seed, the seed that will be singled out clean both sides with ultra-pure water microwave resonance, remove after impurity and dust, put 30s is soaked in 75wt% ethanol water, 30min is soaked in the NaClO solution for then placing into 0.2wt%, seed disappears It is placed on aseptic filter paper and drains after poison, and the weight fraction ratio of three-coloured amaranth seed and turf seed is 1:1-10 is standby;By grass family The cauline leaf of plant is compiled as net double-deck and with cavity structure;Standby seed mixture, stalk, peat, wood chip are inserted into institute The hollow intracavitary of net is stated, the amount of the filling seed is 30g/ ㎡, and the filling stalk, peat, wood chip amount are 60g/ ㎡ grass The net that section's plant stem-leaf is weaved into soaks the Na by pH6.5 before filling seed2HPO4-KH2PO4Buffer adds oil as solvent Rape lactone is made into concentration for 150umol/L solution;
(2) three-coloured amaranth culture module is planted in Hg-As-Ni combined contamination soils, the compound dirts of restoration of the ecosystem Hg-As-Ni Soil is contaminated, the net laying that will be filled with seed mixture is located in Hg-As-Ni combined contamination soils;
(3) maintenance management,
A, sod grass cut grass and follow 1/3 principle, the height for the stubble left is 4cm to grass is cut for the first time during 6cm;Careless position is cut for the second time When sod grass highly reaches more than 10cm, lawn is trimmed;Sowing time is again in the grass family after even root harvesting grass Filling seed in the net that plant stem-leaf is weaved into, the cauline leaf collection under harvesting, trimming is concentrated after drying and carries out harmless treatment number of times According to depending on turf seed growth situation, retain three-coloured amaranth germinating growth cauline leaf;
B, the amount of application that topdresses are 0.5kg N/100m2;
C, when grass is turned green, pour water of turning green, with improve grass growth period.
(4) it is planted in Hg-As-Ni combined contamination soils, enrichment of the checking three-coloured amaranth culture module to soil Hg-As-Ni Effect;
A. three-coloured amaranth culture module is planted respectively in two pieces of Hg-As-Ni combined contamination soils and do not plant three-coloured amaranth culture mould Block, and in harvest time harvest;
B. after harvesting, using five point sampling, table soil is removed, to planting the Hg-As-Ni pollutions after each kind vegetables Soil is sampled respectively;The soil of polluted by heavy metal cadmium not plant three-coloured amaranth culture module is handled as control group, and is adopted Control group soil is sampled with identical sampling method, each soil sample plant residue and other impurities is removed into, in room temperature bar Under part, natural air drying grinds to form the standard soil sample of 20 mesh and 100 mesh respectively, using micro- analysis of spectrum (MS), it is ultraviolet can spectrophotometric The methods such as method (UV) carry out content of beary metal detection, by measuring soil Hg-As-Ni contents and control group after planting vegetable Hg-As-Ni contents compare, and Hg-As-Ni contents plantation three-coloured amaranth culture module is relatively low in soil, primarily determines that three-coloured amaranth culture mould Block is to filter out largely adsorb the countermeasure kind of Hg-As-Ni in soil.
As shown in table 1:
Table 1:
It is to sum up known:Hg-As-Ni contents plantation three-coloured amaranth culture module is relatively low in soil, determines that three-coloured amaranth culture module can be big Hg-As-Ni in amount absorption soil.

Claims (9)

1. a kind of ecological restoring method of heavy-metal contaminated soil, it is characterised in that:
(1) three-coloured amaranth culture module is prepared;
(2) three-coloured amaranth culture module is planted in Hg-As-Ni combined contamination soils, restoration of the ecosystem Hg-As-Ni combined pollutions soil Earth;
(3) maintenance management;
The step (1):
Three-coloured amaranth seed and turf seed are chosen, and the weight fraction ratio of three-coloured amaranth seed and turf seed is 1:1-10 is standby;By standing grain The cauline leaf of graminaceous plant is compiled as net double-deck and with cavity structure;Standby seed mixture is inserted to the middle cavity of the net It is interior;
The step (2):
The net laying that will be filled with seed mixture is located in Hg-As-Ni combined contamination soils;
The step (3):
A, sod grass cut grass and follow 1/3 principle, the height for the stubble left is 2-4cm to grass is cut for the first time during 6cm, cut careless number of times according to grass Depending on skin seed growth situation, retain three-coloured amaranth germinating growth cauline leaf;
B, the amount of application that topdresses are 0.3-0.5kg N/100m2
C, when grass is turned green, pour water of turning green, with improve grass growth period.
2. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:The filling seed Amount be 28-40g/ ㎡.
3. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:The grass family is planted The net that thing cauline leaf is weaved into soaks the Na by pH6.5 before filling seed2HPO4-KH2PO4Buffer adds rape element as solvent Lactone is made into concentration for 10-150umol/L solution.
4. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:The turf natural plant height When degree reaches more than 10cm, lawn is trimmed;Sowing time is again in the grass cauline leaf after even root harvesting grass Filling seed in the net weaved into, the cauline leaf collection under harvesting, trimming is concentrated after drying and carries out harmless treatment.
5. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:The three-coloured amaranth kind Son, three-coloured amaranth is gathered in picking time, and sowing time is again in the net that the grass cauline leaf is weaved into after even root harvesting three-coloured amaranth Fill seed.
6. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:The grass family is planted Following composition can also be filled in the net that thing cauline leaf is weaved into:Organic materials:Stalk, peat, wood chip, chicken manure, grass meal;Inorganic matter Material:Lime, calcium magnesium phosphate, siliceous fertilizer, solid sulfate;One or more combination in the above-mentioned material of microorganism formulation, it is described to fill out Total amount is filled for 40-60g/ ㎡.
7. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:It is described to choose the whole nation Various regions are when annual output is received, nothing is gone mouldy and damaged, the three-coloured amaranth seed and turf seed of full grains, the seed ultra-pure water that will be singled out Both sides are cleaned in microwave resonance, remove after impurity and dust, 30s is soaked in the ethanol water for being placed in 75wt%, is then placed into Soaked in 0.2wt% NaClO solution be placed in after 30min, seed disinfection it is drained and standby on aseptic filter paper.
8. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:Methods described is applicable In reparation Hg-As-Ni combined contamination soils.
9. a kind of ecological restoring method of heavy-metal contaminated soil as claimed in claim 1, it is characterised in that:The sod grass Seed variety is Festuca Arundinacea.
CN201710453616.8A 2017-06-15 2017-06-15 A kind of ecological restoring method of heavy-metal contaminated soil Pending CN107052035A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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CN108031705A (en) * 2017-12-20 2018-05-15 甘肃省农业科学院土壤肥料与节水农业研究所 One kind is used for heavy-metal contaminated soil seed implantation methods

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Publication number Priority date Publication date Assignee Title
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