CN105945047A - Comprehensive remediation method for soil polluted by heavy metals and application of comprehensive remediation method - Google Patents

Comprehensive remediation method for soil polluted by heavy metals and application of comprehensive remediation method Download PDF

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Publication number
CN105945047A
CN105945047A CN201610536019.7A CN201610536019A CN105945047A CN 105945047 A CN105945047 A CN 105945047A CN 201610536019 A CN201610536019 A CN 201610536019A CN 105945047 A CN105945047 A CN 105945047A
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China
Prior art keywords
soil
water
heavy
metal
plant
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CN201610536019.7A
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Inventor
夏战利
陈思池
蒋晓梅
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Zhongshan Lyulang Additives Co Ltd
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Zhongshan Lyulang Additives Co Ltd
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Priority to CN201610536019.7A priority Critical patent/CN105945047A/en
Publication of CN105945047A publication Critical patent/CN105945047A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/02Extraction using liquids, e.g. washing, leaching, flotation
    • 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
    • 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 invention discloses a comprehensive remediation method for soil polluted by heavy metals and application of the comprehensive remediation method. The comprehensive remediation method comprises the following steps of arranging an enclosing wall around the soil polluted by the heavy metals, supplying water to the soil through a water pipeline, and cultivating aquatic plants with better metal absorbency; taking out the aquatic plants, draining excessive water, enabling the soil to ventilate, and naturally drying in the air; planting plants with better absorbency to the heavy metals, pruning stems and leaves of plants at fixed period when the stems and leaves of the plants over grow, accelerating vegetative growth of the plants, and completely digging out root systems of the plants after a growing period; introducing earthworms, and watering during the period; digging out a plurality of grass pits in the soil, wherein the space between every two adjacent grass pits is 2 to 3m; cultivating maggots by adopting a straw insect rearing method, and using the maggots to purify residual heavy metals in the soil, wherein the maggots become adults and then fly away; and adopting phytoremediation, earthworm bioaccumulation and maggot bioaccumulation at the same time. According to the comprehensive remediation method, which is a soil remediation method, disclosed by the invention, the total amount of the heavy metals in the soil can be effectively reduced, and no pollution and damage to a site proposed to be remediated are caused; and the method is environmentally friendly.

Description

The method for comprehensive repairing of a kind of heavy-metal contaminated soil and application
Technical field
The present invention relates to method for comprehensive repairing and the application of a kind of heavy-metal contaminated soil.
Background technology
At present, in order to improve grain yield, come into operation inorganic fertilizer in a large number in a lot of farmlands, pesticide, but chemical fertilizer and the pesticide quality to agricultural product is have ignored while carrying out carrying product, soil compaction, subsoil water and the adverse effect of ecological environment, organic matter in soil is drastically declined, heavy metal is gathered, destroy original soil ecology balance, soil compaction, water and soil pollution, ecological deterioration, disruption of ecological balance, agriculture production cost increases and agricultural product quality declines contradiction, thus occur in that Higher output is not accompanied by a higher income and the vicious cycle of environmental pollution madness such as (grow) rivers and lakes water baths.
Heavy metal pollution of soil has disguise, chronicity and irreversibility, the pollutant holdup time in soil is long, plant or microorganism can not be degraded, heavy metal pollution does not only result in the reduction of the degeneration of soil, crop yield and quality, and may be jeopardized the life and health of the mankind by directly contact, food chain.
At present, heavy metal pollution of soil recovery technique is all being carried out widely studied by countries in the world, and its main path has 3 kinds: 1. change heavy metal state, reduces its activity so that it is passivation, departs from food chain, reduce its toxicity;2. hyperaccumulative plant is utilized to absorb the heavy metal in soil;3. by engineering, heavy metal become soluble state, free state, more scrubbed, then collect the heavy metal in leacheate, thus reach reclaim heavy metal and reduce the purpose of heavy metal in soil content.For these three approach, its concrete method typically can divide following several measure: engineering reclamation activities, chemical redemption measure, agricultural measures and biological restoration measure etc., but above-mentioned three kinds of reclamation activitiess put into relatively big, the uniform ideal of effect.
Summary of the invention
The problem existed for above-mentioned prior art, the invention provides method for comprehensive repairing and the application of a kind of heavy-metal contaminated soil, water soaking is used to cultivate water plant while rinsing, use phytoremediation, earthworm bioaccumulation and maggot enrichment simultaneously, there is provided a kind of economical rationality is effectively reduced heavy metal in soil total amount, and to intend repair place pollution-free and destroy, environment amenable soil remediation method.
To achieve these goals, the technical solution used in the present invention is:
The method for comprehensive repairing of a kind of heavy-metal contaminated soil, comprises the following steps:
Step (1), it is arranged around enclosure wall at heavy-metal contaminated soil, the height of enclosure wall exceeds soil 30-40cm, further connecting water pipe road on enclosure wall, the mode using broad irrigation passes through waterpipe to soil water supply, when water is all impregnated with soil and exceeds more than soil 10cm, stop supplying water, cultivate the preferable water plant of Metal absorption;
Step (2), drain after water by waterpipe after 4-6 days, supply water again by waterpipe and keep the water surface to exceed more than soil 10cm, being so repeated 5-8 time;
Step (3), take out water plant, discharge excessive moisture, allow soil ventilation, naturally dry;
Step (4), until step (3) process after soil be gradually brought to humidity suitable time, the plantation preferable plant of heavy metal absorbability, periodically to cut off stem and leaf, accelerate it and nourish and grow when plant stem-leaf is in great numbers, after having crossed trophophase, the root system of plant all be dug out;
Step (5), in soil, apply straw and fertilizer after, introduce Lumbricus, water every day period, keeping the soil moisture is 5~32 DEG C, continues 1-2 month;
Step (6), in soil, dig out multiple grass cave, adjacent grass cave be spaced apart 2-3m, use Caulis et Folium Oryzae to educate worm method cultivation maggot, make maggot purify the heavy metal of residual in soil, fly away after maggot adult.
Any of the above-described scheme preferably, at least one during the preferable plant of heavy metal absorbability is Pteris vittata L, grass pearl, Herba Commelinae, Herba pteridis vittatae, Radix Artemisia ordosicae, Caulis Miscanthis floriduli, Bidens maximowicziana Oett, false indigo and Herba Xanthii in described step (4).
Any of the above-described scheme preferably, at least one during water plant is Herba Ceratopteridis Thalictroidis, quillwort dish and Herba Eichhorniae in described step (1).
Any of the above-described scheme is preferably, in described step (6), Caulis et Folium Oryzae is educated the concrete operation method of worm method and is: Caulis et Folium Oryzae is cut into the segment of a length of 3-6cm, add water boil 1-2 hour, after in embedment grass cave, the mud of 6-8cm sealing on upper cap, waters once, keep internal moistening every day, after 8-10 days, maggot bears.
Preferably, described grass cave is 80-100cm × 80-100cm to any of the above-described scheme, and the degree of depth is 25-35cm.
Preferably, in described step (4), the plantation preferable plant of Metal uptake uses crop rotation or the planting patterns of catch cropping to any of the above-described scheme.
Method for comprehensive repairing according to the heavy-metal contaminated soil described in any of the above-described item is for administering the soil with repairing heavy metal pollution and reclaiming heavy metal.
The invention has the beneficial effects as follows: use water soaking to cultivate water plant while rinsing, use phytoremediation, earthworm bioaccumulation and maggot enrichment simultaneously, there is provided a kind of economical rationality is effectively reduced heavy metal in soil total amount, and to intend repair place pollution-free and destroy, environment amenable soil remediation method.
Detailed description of the invention
Embodiment one,
The method for comprehensive repairing of a kind of heavy-metal contaminated soil, comprises the following steps:
Step (1), it is arranged around enclosure wall at heavy-metal contaminated soil, the height of enclosure wall exceeds soil 30cm, further connecting water pipe road on enclosure wall, the mode using broad irrigation passes through waterpipe to soil water supply, when water is all impregnated with soil and exceeds soil 20cm, stop supplying water, cultivate Herba Ceratopteridis Thalictroidis, quillwort dish and Herba Eichhorniae;
Step (2), drain after water by waterpipe after 4 days, supply water again by waterpipe and keep the water surface to exceed soil 20cm, being so repeated 5 times;
Step (3), take out water plant, discharge excessive moisture, allow soil ventilation, naturally dry;
Step (4), until step (3) process after soil be gradually brought to humidity suitable time, intercropping plant Pteris vittata L, grass pearl, Herba Commelinae, Herba pteridis vittatae, Radix Artemisia ordosicae, Caulis Miscanthis floriduli, Bidens maximowicziana Oett, false indigo and Herba Xanthii, stem and leaf is periodically cut off when above-mentioned plant stem-leaf is in great numbers, accelerate it to nourish and grow, after having crossed trophophase, the root system of plant all be dug out;
Step (5), in soil, apply straw and fertilizer after, introduce Lumbricus, water every day period, keep the soil moisture be 20 DEG C, continue 1 month;
Step (6), dig out in soil multiple grass cave, grass cave be 80 cm × 80cm, the degree of depth is 25cm.
Adjacent grass cave be spaced apart 2m, use Caulis et Folium Oryzae to educate worm method cultivation maggot, make maggot purify the heavy metal of residual in soil, fly away after maggot adult.The concrete operation method of worm method educated by Caulis et Folium Oryzae: Caulis et Folium Oryzae is cut into the segment of a length of 3-6cm, adds water boil 1-2 hour, in embedment grass cave after, the mud of 6-8cm sealing on upper cap, water every day once, keep internal and moisten, after 8-10 days, maggot bears.
Method for comprehensive repairing according to a kind of heavy-metal contaminated soil described in any of the above-described item is for administering the soil with repairing heavy metal pollution and reclaiming heavy metal.
Embodiment two,
The method for comprehensive repairing of a kind of heavy-metal contaminated soil, comprises the following steps:
Step (1), it is arranged around enclosure wall at heavy-metal contaminated soil, the height of enclosure wall exceeds soil 40cm, further connecting water pipe road on enclosure wall, the mode using broad irrigation passes through waterpipe to soil water supply, when water is all impregnated with soil and exceeds more than soil 10cm, stop supplying water, cultivate Herba Ceratopteridis Thalictroidis and quillwort dish;
Step (2), drain after water by waterpipe after 6 days, supply water again by waterpipe and keep the water surface to exceed soil 25cm, being so repeated 8 times;
Step (3), take out water plant, discharge excessive moisture, allow soil ventilation, naturally dry;
Step (4), until step (3) process after soil be gradually brought to humidity suitable time, crop rotation or intercropping plant Pteris vittata L and grass pearl, Herba Commelinae, periodically to cut off stem and leaf when plant stem-leaf is in great numbers, accelerate it and nourish and grow, after having crossed trophophase, the root system of plant all be dug out;
Step (5), in soil, apply straw and fertilizer after, introduce Lumbricus, water every day period, keep the soil moisture be 30 DEG C, continue 2 months;
Step (6), dig out in soil multiple grass cave, grass cave be 100cm × 100cm, the degree of depth is 35cm.
Adjacent grass cave be spaced apart 3m, use Caulis et Folium Oryzae to educate worm method cultivation maggot, make maggot purify the heavy metal of residual in soil, fly away after maggot adult.The concrete operation method of worm method educated by Caulis et Folium Oryzae: Caulis et Folium Oryzae is cut into the segment of a length of 6cm, adds water boil 2 hours, in embedment grass cave after, the mud of 8cm sealing on upper cap, water every day once, keep internal and moisten, after 10 days, maggot bears.
Method for comprehensive repairing according to a kind of heavy-metal contaminated soil described in any of the above-described item is used for reclaiming heavy metal.Landfill is carried out after reclaiming Lumbricus, maggot, Herba Ceratopteridis Thalictroidis, quillwort dish, Pteris vittata L, grass pearl and Herba Commelinae.
The technical scheme provided the embodiment of the present invention above is described in detail, principle and the embodiment of the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only applicable to help to understand the principle of the embodiment of the present invention;Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, all will change in detailed description of the invention and range of application, in sum, this specification content should not be construed as limitation of the present invention.

Claims (7)

1. the method for comprehensive repairing of a heavy-metal contaminated soil, it is characterised in that comprise the following steps:
Step (1), it is arranged around enclosure wall at heavy-metal contaminated soil, the height of enclosure wall exceeds soil 30-40cm, further connecting water pipe road on enclosure wall, the mode using broad irrigation passes through waterpipe to soil water supply, when water is all impregnated with soil and exceeds more than soil 10cm, stop supplying water, cultivate the preferable water plant of Metal absorption;
Step (2), drain after water by waterpipe after 4-6 days, supply water again by waterpipe and keep the water surface to exceed more than soil 10cm, being so repeated 5-8 time;
Step (3), take out water plant, discharge excessive moisture, allow soil ventilation, naturally dry;
Step (4), until step (3) process after soil be gradually brought to humidity suitable time, the plantation preferable plant of heavy metal absorbability, periodically to cut off stem and leaf, accelerate it and nourish and grow when plant stem-leaf is in great numbers, after having crossed trophophase, the root system of plant all be dug out;
Step (5), in soil, apply straw and fertilizer after, introduce Lumbricus, water every day period, keeping the soil moisture is 5~32 DEG C, continues 1-2 month;
Step (6), in soil, dig out multiple grass cave, adjacent grass cave be spaced apart 2-3m, use Caulis et Folium Oryzae to educate worm method cultivation maggot, make maggot purify the heavy metal of residual in soil, fly away after maggot adult.
The method for comprehensive repairing of a kind of heavy-metal contaminated soil the most according to claim 1, it is characterized in that, at least one during the preferable plant of heavy metal absorbability is Pteris vittata L, grass pearl, Herba Commelinae, Herba pteridis vittatae, Radix Artemisia ordosicae, Caulis Miscanthis floriduli, Bidens maximowicziana Oett, false indigo and Herba Xanthii in described step (4).
The method for comprehensive repairing of a kind of heavy-metal contaminated soil the most according to claim 1, it is characterised in that at least one during water plant is Herba Ceratopteridis Thalictroidis, quillwort dish and Herba Eichhorniae in described step (1).
The method for comprehensive repairing of a kind of heavy-metal contaminated soil the most according to claim 1, it is characterized in that, in described step (6), Caulis et Folium Oryzae is educated the concrete operation method of worm method and is: Caulis et Folium Oryzae is cut into the segment of a length of 3-6cm, add water boil 1-2 hour, in embedment grass cave after, the mud of 6-8cm sealing on upper cap, water every day once, keeping internal moistening, after 8-10 days, maggot bears.
The method for comprehensive repairing of a kind of heavy-metal contaminated soil the most according to claim 4, it is characterised in that described grass cave is 80-100cm × 80-100cm, and the degree of depth is 25-35cm.
The method for comprehensive repairing of a kind of heavy-metal contaminated soil the most according to claim 1, it is characterised in that in described step (4), the plantation preferable plant of Metal uptake uses crop rotation or the planting patterns of catch cropping.
7. for improvement and the soil of repairing heavy metal pollution and reclaim heavy metal according to the method for comprehensive repairing of a kind of heavy-metal contaminated soil described in any one of claim 1-6.
CN201610536019.7A 2016-07-10 2016-07-10 Comprehensive remediation method for soil polluted by heavy metals and application of comprehensive remediation method Pending CN105945047A (en)

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Cited By (12)

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CN106475406A (en) * 2016-12-24 2017-03-08 东莞市碧江源环保科技有限公司 A kind of ecological restoring method of heavy-metal contaminated soil
CN106613476A (en) * 2016-11-10 2017-05-10 陈建峰 Method for cultivating matrix nutrient soil by means of household waste incineration fly ash
CN107175256A (en) * 2017-07-27 2017-09-19 河南工业大学 Utilize the method for two kinds of shift of crops cadmium pollution soil repairs
CN107377601A (en) * 2017-07-07 2017-11-24 中国环境科学研究院 A kind of method and its application of repairing heavy metal in soil pollution
CN107457254A (en) * 2017-08-14 2017-12-12 浙江省农业科学院 The method and system of plant animal combined highly effective restoration of soil polluted by heavy metal
CN107457255A (en) * 2017-09-16 2017-12-12 常州豪坦商贸有限公司 A kind of restorative procedure of heavy-metal contaminated soil
CN107552560A (en) * 2017-08-28 2018-01-09 广州德隆环境检测技术有限公司 A kind of method using plant combined microorganism remediation heavy-metal contaminated soil
CN108094328A (en) * 2017-12-07 2018-06-01 广西武宣金泰丰农业科技发展有限公司 The method that cow dung combines bean jelly processing factory Chinese mesona herb slag breeding earthworm
CN109226253A (en) * 2018-11-12 2019-01-18 崔维佳 A kind of restorative procedure of heavy-metal contaminated soil
CN110238190A (en) * 2019-05-14 2019-09-17 中山市智辉科技服务有限公司 A kind of heavy-metal contaminated soil restorative procedure based on microorganism
CN110756576A (en) * 2019-09-12 2020-02-07 金晨辉 Soil replacement lead removal method for soil lead pollution treatment
CN111589856A (en) * 2020-06-16 2020-08-28 黄�俊 Treatment method for repairing heavy metal soil by microorganisms

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106613476A (en) * 2016-11-10 2017-05-10 陈建峰 Method for cultivating matrix nutrient soil by means of household waste incineration fly ash
CN106475406B (en) * 2016-12-24 2019-04-30 东莞市碧江源环保科技有限公司 A kind of ecological restoring method of heavy-metal contaminated soil
CN106475406A (en) * 2016-12-24 2017-03-08 东莞市碧江源环保科技有限公司 A kind of ecological restoring method of heavy-metal contaminated soil
CN107377601B (en) * 2017-07-07 2020-04-10 中国环境科学研究院 Method for remedying heavy metal pollution of soil and application thereof
CN107377601A (en) * 2017-07-07 2017-11-24 中国环境科学研究院 A kind of method and its application of repairing heavy metal in soil pollution
CN107175256A (en) * 2017-07-27 2017-09-19 河南工业大学 Utilize the method for two kinds of shift of crops cadmium pollution soil repairs
CN107457254A (en) * 2017-08-14 2017-12-12 浙江省农业科学院 The method and system of plant animal combined highly effective restoration of soil polluted by heavy metal
CN107552560A (en) * 2017-08-28 2018-01-09 广州德隆环境检测技术有限公司 A kind of method using plant combined microorganism remediation heavy-metal contaminated soil
CN107457255A (en) * 2017-09-16 2017-12-12 常州豪坦商贸有限公司 A kind of restorative procedure of heavy-metal contaminated soil
CN108094328A (en) * 2017-12-07 2018-06-01 广西武宣金泰丰农业科技发展有限公司 The method that cow dung combines bean jelly processing factory Chinese mesona herb slag breeding earthworm
CN109226253A (en) * 2018-11-12 2019-01-18 崔维佳 A kind of restorative procedure of heavy-metal contaminated soil
CN110238190A (en) * 2019-05-14 2019-09-17 中山市智辉科技服务有限公司 A kind of heavy-metal contaminated soil restorative procedure based on microorganism
CN110756576A (en) * 2019-09-12 2020-02-07 金晨辉 Soil replacement lead removal method for soil lead pollution treatment
CN111589856A (en) * 2020-06-16 2020-08-28 黄�俊 Treatment method for repairing heavy metal soil by microorganisms

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