CN104259192A - Ecological water conservancy restoration system and method for heavy metal polluted farmland soil - Google Patents

Ecological water conservancy restoration system and method for heavy metal polluted farmland soil Download PDF

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CN104259192A
CN104259192A CN201410497202.1A CN201410497202A CN104259192A CN 104259192 A CN104259192 A CN 104259192A CN 201410497202 A CN201410497202 A CN 201410497202A CN 104259192 A CN104259192 A CN 104259192A
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heavy metal
water
ecological
soil
rice
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CN201410497202.1A
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CN104259192B (en
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李青云
汤显强
林莉
黄茁
王振华
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长江水利委员会长江科学院
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Abstract

The invention provides an ecological water conservancy restoration system and method for heavy metal polluted farmland soil. The ecological water conservancy restoration method comprises elution and purification of soil heavy metals in a planting intermission period and water and fertilizer combined prevention and control of soil residual heavy metals in a planting period; in a rice planting intermission period, circular treatment of environmental-protection elution, field water recession and forced drainage and receded water ecological purification is carried out on heavy metal polluted soil sequentially, so that overproof heavy metals in rice soil can be gradually transferred into a water body to be treated, and thus the rice field is cleaned; in a rice planting period, field water and fertilizer combined prevention and control is carried out on the residual heavy metals after the rice soil is eluted, so as to prevent and control the heavy metals from entering the rice; a series of treatment measures to the soil heavy metals in the rice planting intermission period and the planting period can ensure the treatment on symptoms and root causes of the heavy metal polluted rice soil and further can ensure the safe planting of rice.

Description

A kind of Ecological waterscape repair system of heavy metal pollution agricultural land soil and method
Technical field
The present invention relates to cultivated land protection and contaminated soil administers field, specifically a kind of Ecological waterscape repair system of heavy metal pollution agricultural land soil and method.
Background technology
Ministry of Land and Resources's recent statistics data show, the 18.26 hundred million mu of cultivated areas in the whole nation have more than 12% to be subject to the heavy metal pollutions such as cadmium, lead, arsenic, mercury, and the rice heavy metals exceeding standard problem of rice field heavy metal pollution and initiation thereof is particularly serious.The Hunan Province's cadmium rice event occurred for 2013 shocks both at home and abroad especially, and except Hunan, south China Guangdong, Guangxi, Fujian, zhejiang and other places all exist rice cadmium and to exceed standard phenomenon, and exceeding standard rate is about 5% ~ 15%.The grain of long-term edible heavy metals exceeding standard, meeting grievous injury human liver, kidney and nervous system, threaten people's life healthy and safe.The population of China 60% take rice as staple food, rice field heavy metal pollution reduces soil quality, destroy the land resource of China's preciousness, greatly weaken the basis of rice stable yields volume increase, the repairing and treating actively developing heavy metal pollution rice field is Appropriate application land resource, solves the fundamental solution of rice heavy metal pollution, guarantee China basic grain ration safety.
The measure of current domestic and international existing heavy-metal contaminated soil repairing and treating comprises engineering measure, soil improvement and drip washing, agricultural measures and phytoremediation etc.Engineering measure comprise turn over, soil moved in improve the original and soil removal and replacement, quantities is comparatively large, also needs at substantial cleaning soil, is suitable for site remediation, but be difficult to the Regional dealing with pollution in wide area rice field.Amendement relies on modifying agent stabilizing heavy metal, cannot reduce heavy metal in soil content and conciliate heavy metal pollution removing risk, and there is modifying agent causes secondary pollution and spoiled soil self ecological balance problem to soil.Soil chemistry elution technique is applicable to contaminated site reparation, and short implementation cycle, efficiency are higher, cleaning heavy metal is comparatively thorough, but it adopts chemical agent easily to cause soil secondary pollution, needs badly and finds environmentally friendly agricultural land soil eluent.Agricultural measures suppresses Crop heavy metal by fertilising and water consumpation regulation and control, cannot cut down heavy metal in soil content, and regulating and controlling to become more meticulous, it is high to require, heavy metal pollution risk is difficult to resolve to be removed.Phytoremediation low cost, not damage field ground structure, but the cycle is longer, takes effect slow, causes rice field cannot plant for a long time on the one hand, affect eating rice production; And the reprocessing after plant absorption enriching heavy metal is also a difficult problem, the therefore domestic case also not having large area phytoremediation heavy metal pollution paddy soil.
To sum up, existing Treatment process is confined to heavy metal in contaminated soil medium, carry out original position or dystopy process, and cost is higher, and produces certain interference to normal farming, is difficult to large scale application.Meanwhile, the pollution control of heavy metal in water relatively easily and do not affect Rice Cropping, how to utilize irrigation and water conservancy and restoration of the ecosystem principle, under the condition not affecting the normal farming of paddy rice, change heavy metal-polluted soil administers as heavy metal in water is administered, the Ecological waterscape recovery technique in a set of heavy metal pollution rice field is proposed, crack heavy metal pollution paddy soil to administer the ideal solution of repairing a difficult problem by being, there is great economic benefit and application prospect.
Summary of the invention
The invention provides a kind of Ecological waterscape repair system and method for heavy metal pollution agricultural land soil, intractability can be reduced, improve treatment effeciency, realize treating both principal and secondary aspect of disease of heavy-metal contaminated soil, Crop securify plantation when not disturbing normal farming is realized while cleaning soil, crack China's paddy soil heavy metal pollution and repair predicament, ensure rice safety in production.
The present invention is achieved through the following technical solutions:
A kind of Ecological waterscape repair system of heavy metal pollution agricultural land soil, comprise strengthening drainpipe or drainage belt, sedimentation basin, ecological canal, the ecological purification pool, strengthening drainpipe or drainage belt are laid in paddy soil, strengthening drainpipe or drainage belt are communicated with sedimentation basin, sedimentation basin is communicated with by pipeline with the ecological purification pool successively with ecological canal, the side slope kind on ecological canal and the ecological purification pool is implanted with heavy metal over-accumulated plant, the clay layer of ecological canal underfill compacting, antiseepage film is covered above clay layer, the heavy metal adsorption matrix of heavy metal adsorption excellent performance is filled above antiseepage film, the water outlet of the ecological purification pool is delivered to rice field through water pump and circulation line, environmental protection eluent dispenser throws in valve access circulation line by environmental protection eluent meter and environmental protection eluent, chemical fertilizer dispenser throws in valve access circulation line by chemical fertilizer meter and chemical fertilizer.
Further, described heavy metal over-accumulated plant is one or more in ramie, beach wormwood wormwood artemisia, ciliate desert-grass.
Further, described heavy metal adsorption matrix is diatomite.
Further, circulation line is provided with feed water flow gauge and inlet valve.
An Ecological waterscape restorative procedure for heavy metal pollution agricultural land soil, apply above-mentioned Ecological waterscape repair system and carry out water conservancy reparation, described method comprises the steps:
Step one, plantation intermittent phase paddy soil heavy metal environmental protection drip washing: in the Rice Cropping intermittent phase, heavy metal environmental protection eluent is used to field, by tillage, heavy metal environmental protection eluent is mixed with rice field topsoil soils, by the disturbance in the process of turning over by biologically effective state heavy metal drip washing stripping in paddy soil, be transferred to water body;
The field water-break forced-ventilated of heavy metal after step 2, paddy soil drip washing: paddy soil heavy metal enters after water body through drip washing, adopt the strengthening drainpipe or the water-break discharge of drainage belt strengthening field that are laid on field, the heavy metal gone out from Soil leaching is discharged paddy system to greatest extent, and internal reduces paddy soil content of beary metal;
The Heavy Metal Ecological canal pool purification that step 3, field water-break are discharged: the water-break of field forced-ventilated enters sedimentation basin by strengthening drainpipe or drainage belt, reduce after water-break soil particle content through precipitation, enter the ecological canal pool of ecological canal and ecological purification pool composition successively, utilize the heavy metal adsorption matrix of ecological canal to carry out matrix absorption, utilize heavy metal over-accumulated plant on slope, the ecological canal side of a pond to carry out plant absorption, utilize the microorganism around heavy metal over-accumulated plant root system to carry out microbial assimilation, interception and removal heavy metal, purification water-break water quality;
After step 4, paddy soil drip washing, liquid manure planting season of residual heavy metal combines resistance control: in planting season, adopts water consumpation and fertilizer to combine the method for resistance control, and restriction heavy metal-polluted soil is transported to rice through rice root, guarantees eating rice production safety.
Further, using heavy metal environmental protection eluent concrete steps in step one to field is:
In the Rice Cropping intermittent phase, circulation line, environmental protection eluent supply device, environmental protection eluent meter and environmental protection eluent is utilized to throw in valve, the mode that taking pours water adds uses the environmentally friendly eluent filtered out, in lessivation, field Submergence time 10-30 days, flooding depth 0-5cm, after environmental protection eluent adds, detected a field water body weight tenor every 5 days, when adjacent twice heavy metal concentration difference is less than 5%, single lessivation terminates.
Further, step 4 is specially: at Period of paddy planting, utilize water pump, circulation line, setting water consumpation condition, control field-moisture capacity 40%-60%, flooding depth 0-5cm, residual heavy metal is stoped to transform to biologically effective state heavy metal, simultaneously, by the mode mixed with water inlet, by chemical fertilizer supply device, valve thrown in by chemical fertilizer meter and chemical fertilizer, the chemical fertilizer used is calcium magnesium phosphate, one in rare-earth fertilizer or mixing, utilize the competition absorption of root system or other plant tissue, resistance control heavy metal enters rice, the mass ratio of chemical fertilizer and water is 1 ~ 3:100.
Further, on ecological canal and ecological purification wetlands, plant tissue is regularly to gathering in, and harvested plant tissue is by burn and the harmless treatment of heavy metal is carried out in security landfill.
Further, in the Rice Cropping intermittent phase, the water outlet of the ecological purification pool is used as to drench scouring water, carries out heavy metal environmental protection drip washing, water-break forced-ventilated and the circulation of water-break ecological purification; At Period of paddy planting, the water outlet of the ecological purification pool is treated reach " agricultural irrigation water quality standard " (GB5084-2005) after, combine the residual heavy metal after the drip washing of resistance control rice absorbing paddy soil for the irrigation of rice growing season and field liquid manure.
Further, the hydraulic detention time on ecological canal and the ecological purification pool is 3-7 days.
Owing to have employed such scheme, the present invention has following beneficial effect:
(1) progressively wash-out and water-break are discharged polluting heavy metal in paddy soil to utilize the mode of irrigation and water conservancy, heavy metal in soil is proceeded to water body process, breach the original position/showering thinking of traditional heavy-metal contaminated soil, reduce intractability, improve treatment effeciency.
(2) by polluting paddy soil biologically effective state heavy metal wash-out, follow-up ecological purification, and after paddy soil drip washing, the liquid manure of residual heavy metal combines resistance control, realizes treating both principal and secondary aspect of disease of heavy-metal contaminated soil.Crack the predicament that domestic heavy-metal contaminated soil is repaired.
(3) integrated farm irrigation facility, ecological reestablishment and agricultural measures, forms a kind of Ecological waterscape recovery technique of heavy metal pollution farmland.In conventional farming process, by progressively wash-out transfer and the crop growth period residual heavy metal resistance control of available heavy metal in plant growth intermittent phase contaminated soil, both cleaning of soil, also achieve Crop securify plantation when not disturbing normal farming, the comprehensive regulation in suitable large area heavy metal pollution rice field, possesses high popularizing application prospect.
(4) irrigation and water conservancy system and the ecological purification canal pool etc., not only repair for heavy metal pollution rice field ecology water conservancy, can also for the field liquid manure management in the normal cultivating procedure in rice field after reparation terminates.Ecological waterscape reparation infrastructure recycling rate of waterused is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Ecological waterscape repair system of heavy metal pollution agricultural land soil of the present invention;
Fig. 2 is the schematic flow sheet of the Ecological waterscape restorative procedure of heavy metal pollution agricultural land soil of the present invention.
In figure: 1-rice field, 2-strengthening drainpipe or drainage belt, 3-paddy rice, 4-circulation line, 5-sedimentation basin, 6-ecological canal, 7-heavy metal over-accumulated plant, 8-heavy metal adsorption matrix, 9-antiseepage film, 10-clay layer, 11-ecological purification pool, 12-grid, 13-water pump, 13-1-feed water flow gauge, 13-2-environmental protection eluent meter, 13-3-chemical fertilizer meter, 14-1-inlet valve, 14-2-environmental protection eluent throws in valve, and valve thrown in by 14-3-chemical fertilizer, 15-1-environmental protection eluent dispenser, 15-2-chemical fertilizer dispenser.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described.
Figure 1 shows that the structural representation of the Ecological waterscape repair system of heavy metal pollution agricultural land soil of the present invention, described system comprises and is arranged on strengthening drainpipe in the soil of rice field 1 or drainage belt 2, sedimentation basin 5, ecological canal 6, the ecological purification pool 11, strengthening drainpipe or drainage belt 2 are communicated with sedimentation basin 5, sedimentation basin 5 is communicated with by pipeline with the ecological purification pool 11 successively with ecological canal 6, the side slope plantation heavy metal over-accumulated plant 7 on ecological canal 6 and the ecological purification pool 11, as ramie, beach wormwood wormwood artemisia, ciliate desert-grass etc., utilize plant roots, stem, the absorption of the tissue such as leaf, enrichment and extraction, heavy metal transfer in ecological canal 6 and the ecological purification pool 11 water body is entered plant tissue.
The clay layer 10 that ecological canal 6 underfill 30cm tamps, clay layer 10 covers antiseepage film 9 above, antiseepage film 9 fills the heavy metal adsorption matrix 8 of heavy metal adsorption excellent performance above, as diatomite etc., with the heavy metal in field water-break in Adsorption And Retention ecological canal 6.
The ecological purification pool 11 water outlet is delivered to rice field 1 through water pump 13 and circulation line 4, is protection water pump 13, arranges grid 12, to tackle withered water plant and foreign material near its intake.
Circulation line 4 is provided with feed water flow gauge 13-1 and inlet valve 14-1, environmental protection eluent dispenser 15-1 throws in valve 14-2 by environmental protection eluent meter 13-2 and environmental protection eluent and accesses circulation line 4, and chemical fertilizer dispenser 15-2 throws in valve 14-3 by chemical fertilizer meter 13-3 and chemical fertilizer and accesses circulation line 4.
The operation principle of described system is: plant the intermittent phase in 3 kinds, paddy rice, circulation line 4, environmental protection eluent supply device 15-1, environmental protection eluent meter 13-2 and environmental protection eluent is utilized to throw in valve 14-2, the mode that taking pours water adds uses the environmentally friendly eluent filtered out, in lessivation, field Submergence time 10-30 days, flooding depth 0-5cm.After environmental protection eluent adds, detected a field water body weight tenor every 5 days, when adjacent twice heavy metal concentration difference is less than 5%, single lessivation terminates.
After the drip washing of single heavy metal terminates, according to the distribution characteristics of heavy metal after wash-out in rice field 1 soil, pore water, Interstitial Water and overlying water, with the discharge of enhanced biological available heavy metal for principle, field is utilized to strengthen drainpipe or drainage belt 2, artificial or discharge from gravity the field biologically effective state heavy metal that drip washing goes out to greatest extent.Depth of the water submerging during the water-break forced-ventilated of field is 0-5cm, and water-break speed is 1-5cm/d.
The water-break of field forced-ventilated enters sedimentation basin 5 through circulation line 4, sedimentation basin 5 flow velocity not higher than 0.05m/s, the heavy metal precipitating the sand grain in most of water-break and be attached in silt.Water-break after precipitation process, enters the ecological canal pool system be transformed into through existing field irrigation water channel, low-lying land, pool etc.
Be attached to heavy metal adsorption matrix 8 surface of ecological canal 6, and microorganism on slope, the ecological canal side of a pond around heavy metal over-accumulated plant 7 root system can heavy metal in assimilation part water body, for improving the heavy metal clean-up effect on the ecological canal pool, also by the domestication of heavy metals removal superior microorganism or microorganism formulation can be added.The hydraulic detention time on the ecological canal pool is 3-7 days.
The ecological purification pool 11 water outlet is connected with rice field 1 with circulation line 4 through water pump 13.In the Rice Cropping intermittent phase, the ecological purification pool 11 water outlet is used as to drench scouring water, carries out heavy metal environmental protection drip washing, water-break forced-ventilated and the circulation of water-break ecological purification, progressively the heavy metal wash-out in paddy soil is transferred to water body, clean rice field.At Period of paddy planting, the ecological purification pool 11 water outlet is treated reach " agricultural irrigation water quality standard " (GB5084-2005) after, combine resistance control paddy rice 3 for the irrigation of rice growing season and field liquid manure and absorb the residual heavy metal after the Soil leaching of rice field 1.
For after resistance control drip washing, pedo relict heavy metal in rice field 1 enters rice, in paddy rice 3 planting season, utilize water pump 13, circulation line 4, setting water consumpation condition, control field-moisture capacity 40%-60%, flooding depth 0-5cm, stop residual heavy metal to transform to biologically effective state heavy metal.Meanwhile, by the mode mixed with water inlet, valve 14-3 is thrown in by chemical fertilizer supply device 15-2, chemical fertilizer meter 13-3 and chemical fertilizer, the chemical fertilizer used is one in calcium magnesium phosphate, rare-earth fertilizer or mixing, utilize the competition absorption of root system or other plant tissue, resistance control heavy metal enters rice, and guarantee grain-production safety, wherein the mass ratio of chemical fertilizer and water is 1 ~ 3:100.
Through cycling elution, water-break forced-ventilated and water-break ecological canal pool purification, progressively remove rice field 1 heavy metal-polluted soil, when rice field 1 geobiont available heavy metal content is lower than " standard of soil environment quality " (15618-1995) secondary standard, Ecological waterscape reparation terminates, and stops rice field 1 Soil leaching of plantation intermittent phase and the liquid manure of degeneration forced-ventilated and planting season to combine the measures such as resistance control.
After the reparation of heavy metal pollution rice field ecology water conservancy terminates, the irrigation and water conservancy systems such as original field water-break drain facility and the ecological canal pool can continue on for irrigation of paddy fields, water consumpation management and fill with draining purification of water quality etc., and the important infrastructure forming the volume increase of paddy rice stable yields supports.
Please refer to Fig. 2, the present invention also provides a kind of Ecological waterscape restorative procedure of heavy metal pollution agricultural land soil, comprises the steps:
Step one, plantation intermittent phase paddy soil heavy metal environmental protection drip washing: in the Rice Cropping intermittent phase (containing the soaked field phase), heavy metal environmental protection eluent is used to field, heavy metal environmental protection eluent mixes with rice field topsoil soils by mode to utilize machinery to turn over etc., by the disturbance in the process of turning over by biologically effective state heavy metal drip washing stripping in paddy soil, be transferred to water body.Using heavy metal environmental protection eluent concrete steps to field is: plant the intermittent phase in 3 kinds, paddy rice, circulation line 4, environmental protection eluent supply device 15-1, environmental protection eluent meter 13-2 and environmental protection eluent is utilized to throw in valve 14-2, the mode that taking pours water adds uses the environmentally friendly eluent filtered out, in lessivation, field Submergence time 10-30 days, flooding depth 0-5cm.After environmental protection eluent adds, detected a field water body weight tenor every 5 days, when adjacent twice heavy metal concentration difference is less than 5%, single lessivation terminates.
The field water-break forced-ventilated of heavy metal after step 2, paddy soil drip washing: paddy soil heavy metal enters after water body through drip washing, adopt and be laid on the strengthening drainpipe in field or drainage belt 2 strengthens field water-break discharge, the heavy metal etc. gone out from Soil leaching is discharged paddy system to greatest extent, and internal reduces paddy soil content of beary metal.
Step 3, the Heavy Metal Ecological canal pool purification that field water-break is discharged: the water-break of field forced-ventilated enters sedimentation basin 5 by strengthening drainpipe or drainage belt 2, reduce after water-break soil particle content through precipitation, enter by the original Irrigation Ditch in field, the ecological canal 6 that low-lying land or pool etc. are transformed into and the ecological purification pool 11, matrix is utilized to adsorb (the heavy metal adsorption matrix 8 of ecological canal 6), plant absorption (on slope, the ecological canal side of a pond heavy metal over-accumulated plant 7) and microbial assimilation (microorganism around heavy metal over-accumulated plant 7 root system), interception and removal heavy metal, purification water-break water quality.The water outlet on the ecological purification pool 11 can continue to serve as paddy soil in the Rice Cropping intermittent phase and drench scouring water, circularly purifying paddy soil; Also can be used as the irrigation water of Period of paddy planting after process is up to standard, implements follow-up liquid manure and combine resistance control rice from absorbing heavy metal.The hydraulic detention time on the ecological canal pool is 3-7 days
After step 4, paddy soil drip washing, liquid manure planting season of residual heavy metal combines resistance control: for effectively reducing the absorption enrichment of paddy rice to heavy metal residual after Soil leaching, in planting season, water consumpation and fertilizer is adopted to combine the method for resistance control, restriction heavy metal-polluted soil is transported to rice through rice root, guarantees eating rice production safety.Concrete, at Period of paddy planting, utilize water pump 13, circulation line 4, setting water consumpation condition, controls field-moisture capacity 40%-60%, flooding depth 0-5cm, stops residual heavy metal to transform to biologically effective state heavy metal.Meanwhile, by the mode mixed with water inlet, valve 14-3 is thrown in by chemical fertilizer supply device 15-2, chemical fertilizer meter 13-3 and chemical fertilizer, use calcium magnesium phosphate and rare-earth fertilizer etc., utilize the competition absorption of root system or other plant tissue, resistance control heavy metal enters rice, and guarantee grain-production safety, wherein the mass ratio of chemical fertilizer and water is 1 ~ 3:100.
It should be noted that, underground (root system) is transferred to from aerial tissues (cauline leaf) for preventing the heavy metal of heavy metal over-accumulated plant 7 enrichments such as ramie, beach wormwood wormwood artemisia, ciliate desert-grass, should regularly gather in its aerial plant tissue, harvested plant tissue carries out the harmless treatment of heavy metal by burning and security landfill.When the drift thickness on sedimentation basin 5, ecological canal 6 and surface, the ecological purification pool 11 reaches 20cm, manually remove, the drift of acquisition adopts and adds the mode such as stabilizing agent, curing agent and carry out harmless treatment.Plant burning residue after safe handling and desilting sludge solidification body, the hazardous waste landfill landfill disposal sending environmental administration to specify.

Claims (10)

1. the Ecological waterscape repair system of a heavy metal pollution agricultural land soil, it is characterized in that: comprise strengthening drainpipe or drainage belt (2), sedimentation basin (4), ecological canal (6), the ecological purification pool (11), strengthening drainpipe or drainage belt (2) are laid in rice field (1) soil, strengthening drainpipe or drainage belt (2) are communicated with sedimentation basin (5), sedimentation basin (5) is communicated with by pipeline with the ecological purification pool (11) successively with ecological canal (6), the side slope kind of ecological canal (6) and the ecological purification pool (11) is implanted with heavy metal over-accumulated plant (7), the clay layer (10) of ecological canal (6) underfill compacting, clay layer (10) covers antiseepage film (9) above, antiseepage film (9) fills the heavy metal adsorption matrix (8) of heavy metal adsorption excellent performance above, the ecological purification pool (11) water outlet is delivered to rice field (1) through water pump (13) and circulation line (4), environmental protection eluent dispenser (15-1) is thrown in valve (14-2) by environmental protection eluent meter (13-2) and environmental protection eluent and is accessed circulation line (4), chemical fertilizer dispenser (15-2) is thrown in valve (14-3) by chemical fertilizer meter (13-3) and chemical fertilizer and is accessed circulation line (4).
2. the Ecological waterscape repair system of heavy metal pollution agricultural land soil as claimed in claim 1, is characterized in that: described heavy metal over-accumulated plant (7) is ramie, beach wormwood wormwood artemisia, one or more in ciliate desert-grass.
3. the Ecological waterscape repair system of heavy metal pollution agricultural land soil as claimed in claim 1, is characterized in that: described heavy metal adsorption matrix (8) is diatomite.
4. the Ecological waterscape repair system of heavy metal pollution agricultural land soil as claimed in claim 1, is characterized in that: circulation line (4) is provided with feed water flow gauge (13-1) and inlet valve (14-1).
5. an Ecological waterscape restorative procedure for heavy metal pollution agricultural land soil, it is characterized in that applying above-mentioned Ecological waterscape repair system carries out water conservancy reparation, described method comprises the steps:
Step one, plantation intermittent phase paddy soil heavy metal environmental protection drip washing: in the Rice Cropping intermittent phase, heavy metal environmental protection eluent is used to field, by tillage, heavy metal environmental protection eluent is mixed with rice field topsoil soils, by the disturbance in the process of turning over by biologically effective state heavy metal drip washing stripping in paddy soil, be transferred to water body;
The field water-break forced-ventilated of heavy metal after step 2, paddy soil drip washing: paddy soil heavy metal enters after water body through drip washing, adopt the strengthening drainpipe or the water-break discharge of drainage belt (2) strengthening field that are laid on field, the heavy metal gone out from Soil leaching is discharged paddy system to greatest extent, and internal reduces paddy soil content of beary metal;
Step 3, the Heavy Metal Ecological canal pool purification that field water-break is discharged: the water-break of field forced-ventilated enters sedimentation basin (5) by strengthening drainpipe or drainage belt (2), reduce after water-break soil particle content through precipitation, enter the ecological canal pool that ecological canal (6) and the ecological purification pool (7) form successively, the heavy metal adsorption matrix (8) of ecological canal (6) is utilized to carry out matrix absorption, heavy metal over-accumulated plant (7) on slope, the ecological canal side of a pond is utilized to carry out plant absorption, the microorganism around heavy metal over-accumulated plant (7) root system is utilized to carry out microbial assimilation, interception and removal heavy metal, purification water-break water quality,
After step 4, paddy soil drip washing, liquid manure planting season of residual heavy metal combines resistance control: in planting season, adopts water consumpation and fertilizer to combine the method for resistance control, and restriction heavy metal-polluted soil is transported to rice through rice root, guarantees eating rice production safety.
6. the Ecological waterscape restorative procedure of heavy metal pollution agricultural land soil as claimed in claim 5, is characterized in that using heavy metal environmental protection eluent concrete steps in step one to field is:
In paddy rice (3) the plantation intermittent phase, circulation line (4), environmental protection eluent supply device (15-1), environmental protection eluent meter (13-2) and environmental protection eluent is utilized to throw in valve (14-2), the mode that taking pours water adds uses the environmentally friendly eluent filtered out, in lessivation, field Submergence time 10-30 days, flooding depth 0-5cm, after environmental protection eluent adds, a field water body weight tenor is detected every 5 days, when adjacent twice heavy metal concentration difference is less than 5%, single lessivation terminates.
7. the Ecological waterscape restorative procedure of heavy metal pollution agricultural land soil as claimed in claim 5, is characterized in that step 4 is specially:
At Period of paddy planting, utilize water pump (13), circulation line (4), setting water consumpation condition, control field-moisture capacity 40%-60%, flooding depth 0-5cm, residual heavy metal is stoped to transform to biologically effective state heavy metal, simultaneously, by the mode mixed with water inlet, by chemical fertilizer supply device (15-2), valve (14-3) thrown in by chemical fertilizer meter (13-3) and chemical fertilizer, the chemical fertilizer used is calcium magnesium phosphate, one in rare-earth fertilizer or mixing, utilize the competition absorption of root system or other plant tissue, resistance control heavy metal enters rice, the mass ratio of chemical fertilizer and water is 1 ~ 3:100.
8. the Ecological waterscape restorative procedure of heavy metal pollution agricultural land soil as claimed in claim 5, it is characterized in that: ecological canal (6) and the ecological purification pool (11) aerial plant tissue are regularly to gathering in, and harvested plant tissue carries out the harmless treatment of heavy metal by burning and security landfill.
9. the Ecological waterscape restorative procedure of heavy metal pollution agricultural land soil as claimed in claim 5, it is characterized in that: in the Rice Cropping intermittent phase, the ecological purification pool (11) water outlet is used as to drench scouring water, carries out heavy metal environmental protection drip washing, water-break forced-ventilated and the circulation of water-break ecological purification; At Period of paddy planting, the ecological purification pool (11) water outlet is treated reach " agricultural irrigation water quality standard " (GB5084-2005) after, combine resistance control paddy rice (3) for the irrigation of rice growing season and field liquid manure and absorb the residual heavy metal after rice field (1) Soil leaching.
10. the Ecological waterscape restorative procedure of heavy metal pollution agricultural land soil as claimed in claim 5, is characterized in that: the hydraulic detention time of ecological canal (6) and the ecological purification pool (11) is 3-7 days.
CN201410497202.1A 2014-09-24 2014-09-24 A kind of Ecological waterscape repair system of heavy metal pollution agricultural land soil and method CN104259192B (en)

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CN107900090A (en) * 2017-12-29 2018-04-13 湖南现代环境科技股份有限公司 A kind of Cd-polluted farmland integrates restorative procedure
CN107971334A (en) * 2017-11-03 2018-05-01 中国科学院生态环境研究中心 A kind of method of more pools-algae water cyclic irrigation system repairing polluted soil
CN108097710A (en) * 2017-12-01 2018-06-01 常州大学 A kind of original position soil prosthetic device
CN108536101A (en) * 2018-03-29 2018-09-14 北京中农精准科技有限公司 A kind of intelligent row's of filling cyclic utilization system and method
CN108607874A (en) * 2018-07-30 2018-10-02 青岛冠中生态股份有限公司 A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution
CN109127687A (en) * 2018-08-15 2019-01-04 魏浩峰 A kind of the Ecological waterscape repair system and method for heavy metal pollution agricultural land soil
CN109319974A (en) * 2018-10-10 2019-02-12 四川农业大学 A kind of easy device and method suitable for farmland low-concentration heavy metal mud-water separation
CN109809627A (en) * 2017-11-22 2019-05-28 中国水利水电科学研究院 A kind of ecological canal pool purification systems and purification method based on field water-break heavy metal
CN110576039A (en) * 2019-10-21 2019-12-17 苏州大研环境科技有限公司 Remediation method for heavy metal pollution of soil
CN111960545A (en) * 2020-07-28 2020-11-20 南昌工程学院 Comprehensive treatment system based on ecological ditch pond agricultural non-point source pollution

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005066442A (en) * 2003-08-22 2005-03-17 Fuji Electric Systems Co Ltd Cleansing method of contaminated soil
CN101085450A (en) * 2006-06-06 2007-12-12 中国科学院沈阳应用生态研究所 Method for treating heavy metal polluted soil
CN101157495A (en) * 2006-10-07 2008-04-09 钟显亮 Technology for treating and fully-utilizing village-town house solid waste and domestic sewage
CA2730430A1 (en) * 2008-07-11 2010-01-14 Richard Aho Method of biological treatment of piles of materials containing some organic matter
CN101732822A (en) * 2008-11-04 2010-06-16 永旭环保科技股份有限公司 Method for treating waste or soil polluted by heavy metal or dioxin
KR20120064803A (en) * 2010-12-10 2012-06-20 송원근 Hybrid type soil washing facility and method for separation and remediation of contaminated soil
KR101350968B1 (en) * 2012-10-24 2014-01-14 한국광해관리공단 Vehicle typed apparatus for remedying asbestos contaminated soil
KR20140039476A (en) * 2012-09-24 2014-04-02 (주)신대양 Vessel for remedying oil polluted soil in marine or river
CN103785677A (en) * 2014-01-26 2014-05-14 河北欧美环境工程有限公司 Integrated device for heavy metal contaminated soil remediation and leacheate recycling and method thereof
CN104043642A (en) * 2014-06-25 2014-09-17 柏连阳 Method for in-situ separation of harmful heavy metal in soil

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005066442A (en) * 2003-08-22 2005-03-17 Fuji Electric Systems Co Ltd Cleansing method of contaminated soil
CN101085450A (en) * 2006-06-06 2007-12-12 中国科学院沈阳应用生态研究所 Method for treating heavy metal polluted soil
CN101157495A (en) * 2006-10-07 2008-04-09 钟显亮 Technology for treating and fully-utilizing village-town house solid waste and domestic sewage
CA2730430A1 (en) * 2008-07-11 2010-01-14 Richard Aho Method of biological treatment of piles of materials containing some organic matter
CN101732822A (en) * 2008-11-04 2010-06-16 永旭环保科技股份有限公司 Method for treating waste or soil polluted by heavy metal or dioxin
KR20120064803A (en) * 2010-12-10 2012-06-20 송원근 Hybrid type soil washing facility and method for separation and remediation of contaminated soil
KR20140039476A (en) * 2012-09-24 2014-04-02 (주)신대양 Vessel for remedying oil polluted soil in marine or river
KR101350968B1 (en) * 2012-10-24 2014-01-14 한국광해관리공단 Vehicle typed apparatus for remedying asbestos contaminated soil
CN103785677A (en) * 2014-01-26 2014-05-14 河北欧美环境工程有限公司 Integrated device for heavy metal contaminated soil remediation and leacheate recycling and method thereof
CN104043642A (en) * 2014-06-25 2014-09-17 柏连阳 Method for in-situ separation of harmful heavy metal in soil

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
杨韬: "南京水阁有机废弃物处理场1号填埋库区封场工程设计", 《中国优秀硕士学位论文全文数据库》, no. 2, 15 December 2011 (2011-12-15), pages 027 - 422 *
樊霆等: "农田土壤重金属污染状况及修复技术研究", 《生态环境学报》, vol. 22, no. 10, 18 October 2013 (2013-10-18) *

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CN107520248A (en) * 2017-09-12 2017-12-29 贵州省草业研究所 A kind of method that crops repair farmland mercury contaminated soil
CN107484689A (en) * 2017-10-09 2017-12-19 何锋 Utilize the method for cray breeding way repairing polluted soil
CN107484689B (en) * 2017-10-09 2020-11-06 邓日表 Method for restoring polluted soil by utilizing crayfish breeding mode
CN107971334A (en) * 2017-11-03 2018-05-01 中国科学院生态环境研究中心 A kind of method of more pools-algae water cyclic irrigation system repairing polluted soil
CN109809627A (en) * 2017-11-22 2019-05-28 中国水利水电科学研究院 A kind of ecological canal pool purification systems and purification method based on field water-break heavy metal
CN108097710A (en) * 2017-12-01 2018-06-01 常州大学 A kind of original position soil prosthetic device
CN107900090A (en) * 2017-12-29 2018-04-13 湖南现代环境科技股份有限公司 A kind of Cd-polluted farmland integrates restorative procedure
CN108536101A (en) * 2018-03-29 2018-09-14 北京中农精准科技有限公司 A kind of intelligent row's of filling cyclic utilization system and method
CN108607874A (en) * 2018-07-30 2018-10-02 青岛冠中生态股份有限公司 A kind of restorative procedure of north abandoned location of industry and mining heavy metal pollution
CN109127687A (en) * 2018-08-15 2019-01-04 魏浩峰 A kind of the Ecological waterscape repair system and method for heavy metal pollution agricultural land soil
CN109319974A (en) * 2018-10-10 2019-02-12 四川农业大学 A kind of easy device and method suitable for farmland low-concentration heavy metal mud-water separation
CN110576039A (en) * 2019-10-21 2019-12-17 苏州大研环境科技有限公司 Remediation method for heavy metal pollution of soil
CN111960545A (en) * 2020-07-28 2020-11-20 南昌工程学院 Comprehensive treatment system based on ecological ditch pond agricultural non-point source pollution

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