CN104692531B - A kind of subsoil water heavy metal pollution prosthetic device - Google Patents
A kind of subsoil water heavy metal pollution prosthetic device Download PDFInfo
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- CN104692531B CN104692531B CN201310651525.7A CN201310651525A CN104692531B CN 104692531 B CN104692531 B CN 104692531B CN 201310651525 A CN201310651525 A CN 201310651525A CN 104692531 B CN104692531 B CN 104692531B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
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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
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
A kind of subsoil water heavy metal pollution prosthetic device, specifically includes that pumping system, water distribution system, adsorption reaction district, phytoremediation district, quick vadose region and monitoring system.Heavy metal is filled in adsorption reaction district adsorbing medium filler, to reach to remove the effect of heavy metal in subsoil water.Phytoremediation district plantation heavy metal has the hyperaccumulative plant absorbing enrichment, enhances the removal effect of heavy metal.Physics, chemisorbed and phytoremediation technology are organically combined by this technical method, can repair the various heavy such as As, Zn, Cd, Mn, Cu, Cr, Pb and pollute, and removal effect is good；Adsorption reaction district medium filler is changed simple, and operating cost is low, and is applicable to the underground water pollution place of different water cut layer depth.
Description
Technical field
The invention belongs to underground water pollution in field of Environment Protection and repair category, be used for repairing more particularly to one
The device of multiple subsoil water heavy metal pollution.
The method that the invention still further relates to utilize above-mentioned prosthetic device to carry out subsoil water heavy metal pollution reparation.
Background technology
Heavy metal is to affect the important pollutant of quality of groundwater.In recent years, send out due to the high speed of industry
Exhibition, electroplates in a large number, digs up mine, prints and dyes, the discharge of the industrial wastewater such as electronics, causes a huge sum of money in subsoil water
Belong to content to sharply increase, have a strong impact on health and ecological environment security.Therefore, it is badly in need of having taked
The recovery technique heavy metal polluted underground water of effect is administered.
At present, process subsoil water heavy metal pollution and mainly have dystopy pump-and-treat system method and in-situ immobilization skill
Art.Though it is short, effective that traditional dystopy pump-and-treat system method processes the cycle, but energy consumption is big, somewhat expensive.
Permeable reactive barrier, electronic is mainly included for repairing the based technique for in-situ remediation of subsoil water heavy metal pollution
Recovery technique.When permeable reactive barrier processes heavy metal pollution, when reaction medium adsorption capacity reaches full
With rear, in body of wall, frequently changing of dielectric material causes this technical operation cost to improve constantly；Electronic repair
Recovering technology needs to carry out under the conditions of sour environment, and rehabilitation cost is high, processes the time long.As fully visible,
The recovery technique being applied to subsoil water heavy metal pollution all has limitation in various degree in Practical Project
Property, it is difficult to realize, based on this, how economical, efficiently, reasonably subsoil water heavy metal pollution is entered
Row repairing and treating is the difficult problem faced outside Present Domestic.
Summary of the invention
It is an object of the invention to provide a kind of subsoil water heavy metal pollution prosthetic device.
A further object of the present invention is to provide one to utilize above-mentioned prosthetic device to carry out a subsoil water huge sum of money
The method belonging to pollution amelioration.
For achieving the above object, the subsoil water heavy metal pollution prosthetic device that the present invention provides, by drawing water
System, water distribution system, adsorption reaction district, phytoremediation district, quick vadose region and monitoring system composition；
Wherein:
Pumping system includes:
Pumped well, is positioned at target water-bearing layer, and suction pump is arranged on the well head of pumped well or is positioned at target and contains
Below water layer water level face, drinking-water pipe is plugged in the middle of well screen, and drainage screen is installed on the dry point of drinking-water pipe
Place；
Water distribution system includes:
Some aqueducts, its one end is all connected with drinking-water pipe and rounded radial is uniformly distributed, arc
Shape water distributor connects aqueduct end, and arc water distributor is provided with multiple apopore, and water distribution system is arranged
In adsorption reaction district upper packing layers；
Adsorption reaction district is to be had adsorbing medium filler to fill by heavy metal to form, adsorption reaction
Side, district and bottom are provided with impervious barrier, and impervious barrier is laid by density polyethylene film with high and formed.
Phytoremediation district is positioned at above adsorption reaction district, is one layer of soil, the soil horizon in phytoremediation district
Surface grafting can the plant of enriching heavy metal；
Quickly vadose region is positioned at the well casing periphery of pumped well, is filled with zeolite and quartz sand；
Monitoring system includes:
Water-quality Monitoring Points at water level monitoring point and two at one, water level monitoring point is placed in pumped well, water quality
Monitoring point is respectively placed in pumped well and quick vadose region.
Described subsoil water heavy metal pollution prosthetic device, wherein, well screen is positioned at below water-bearing layer water level
1.5～7.5m.
Described subsoil water heavy metal pollution prosthetic device, wherein, the micropore size on arc water distributor
It is 1～2mm.
Described subsoil water heavy metal pollution prosthetic device, wherein, the medium filler in adsorption reaction district is
The mixed uniformly filler of biological oxidation manganese, zeolite, haydite 5.5-7:2.5-3.5:1 in mass ratio.
Described subsoil water heavy metal pollution prosthetic device, wherein, being enriched with of soil horizon surface grafting
The plant of heavy metal is Herba pteridis vittatae, Sedum alfredii Hance and Radix Phytolaccae.
Described subsoil water heavy metal pollution prosthetic device, wherein, quick vadose region fill zeolite and
Quartz sand, its particle diameter is 2-4mm, and its mass ratio is 4-6:1.
The above-mentioned subsoil water heavy metal pollution prosthetic device that utilizes that the present invention provides carries out the method repaired,
Its process includes:
1) contaminated by heavy metals subsoil water is first under the extracting effect of pumping system, passes through water distribution
System enters adsorption reaction district；
2) heavy metal in adsorption reaction district medium filling adsorption subsoil water, reaches to repair underground
Water purpose；
3) can the plant of enriching heavy metal the heavy metal in subsoil water being carried out of phytoremediation district plantation
Absorb enrichment, further the repairing effect of heavy metal in strengthening subsoil water；
4) subsoil water after processing enters quick vadose region under gravity, and passes through seepage effect
Under ooze and be back in groundwater environment；
5) water quality in groundwater level, pumped well and in quick vadose region is entered by monitoring system at regular intervals
Row monitoring.
Described method, wherein, adsorption reaction district medium filler is biological oxidation manganese, zeolite, pottery
The grain mixed uniformly filler of 5.5-7:2.5-3.5:1 in mass ratio.
Described method, wherein, soil horizon surface grafting can the plant of enriching heavy metal be Herba pteridis vittatae,
Sedum alfredii Hance and Radix Phytolaccae.
Described method, wherein, is filled with zeolite and quartz sand in quick vadose region, its particle diameter is
2-4mm, its mass ratio is 4-6:1.
Present invention have the advantage that
1) present invention can process the contents of many kinds of heavy metal ion such as As, Zn, Cd, Mn, Cu, Cr, Pb,
Removal effect is good.
2) physics, chemisorbed and phytoremediation technology are organically combined by the present invention, enhance reparation
Effect, is more beneficial for the removal of target contaminant.
3) present invention is not by target water-bearing layer depth limit, it is adaptable to different depth target water-bearing layer
Subsoil water.
4) the adsorption reaction district replacement in the present invention is simple, easily constructs, and operating cost is low.
Accompanying drawing explanation
Fig. 1 is the structural profile schematic diagram of the subsoil water heavy metal pollution prosthetic device of the present invention.
Fig. 2 is the top plan view of Fig. 1.
Primary clustering symbol description in accompanying drawing:
1 adsorption reaction district；2 arc water distributors；3 apopores；4 drinking-water pipes；5 aqueducts；6 prevent
Infiltration layer；7 quick vadose regions；8 well screen；9 suction pumps；10 phytoremediation districts；11 water quality monitorings
Point；12 water level monitoring points；13 pumped wells；14 drainage screens.
Detailed description of the invention
The subsoil water heavy metal pollution prosthetic device that the present invention provides, mainly by pumping system, cloth water system
System, adsorption reaction district, phytoremediation district, quick vadose region and monitoring system six part composition.First,
Contaminated by heavy metals subsoil water is entered aqueduct by suction pump, and aqueduct is centered by well head, in circle
Shape is radial to be uniformly distributed.Subsurface flow enters arc water distributor through aqueduct end, passes through water distributor
On micropore enter adsorption reaction district.Heavy metal is filled in adsorption reaction district has adsorbing medium to fill out
Material filling forms, and selects biological oxidation manganese, zeolite, three kinds of dielectric materials of haydite to carry out after uniformly mixing
Filling, its mass ratio is 5.5-7:2.5-3.5:1.Subsoil water is the process of slow seepage flow in adsorption reaction district
In, heavy metal is fully contacted and adsorbed removal with the adsorbing medium material in adsorption reaction district.Plant
Repairing district and covering a layer thickness is 10～30cm soil, excellent at the hyperaccumulative plant of soil horizon surface plantation
First select Herba pteridis vittatae, Sedum alfredii Hance and Radix Phytolaccae, make the heavy metal in subsoil water go through enrichment
Remove, further enhance repairing effect.Quickly mixed uniformly zeolite and quartz sand are filled in vadose region,
Subsoil water after phytoremediation district and adsorption reaction district process enters under gravity and quickly oozes
Stream district, is back in groundwater environment by oozing under seepage effect.It addition, respectively at pumped well with fast
Speed respectively arranges Water-quality Monitoring Points in vadose region, arranges water level monitoring point in pumped well, forms prison
Examining system, is periodically monitored this contaminated site water level, water quality.
Below in conjunction with drawings and Examples, the invention will be further described.
Refer to Fig. 1 and Fig. 2.The prosthetic device of the present invention specifically includes that pumping system, cloth water system
System, adsorption reaction district, phytoremediation district, quick vadose region and monitoring system.Wherein:
Pumping system includes pumped well 13, suction pump 9, drinking-water pipe 4 and drainage screen 14.Pumped well
13 are positioned at target water-bearing layer deeply, and the pipe a diameter of 60～160mm of pumped well 13, well screen 8 is positioned at and contains
Below water layer water level 1.5～7.5m, a length of 3～9m；Suction pump 9 is arranged at the well head of pumped well
(can also be installed on below target stains aquifer water plane 2～8m), can realize heavy metal pollution ground
Quantitatively drawing water of lower water；Drinking-water pipe 4 dry point is positioned at well screen 8 centre position, a diameter of 40～100mm；
Drainage screen 14 is installed at the dry point of drinking-water pipe 4.
Water distribution system includes some aqueducts 5 and water distributor 2.Aqueduct 5 a diameter of
30～60mm, a length of 2～10m, centered by the well head of pumped well 13, rounded radial all
Even distribution；Aqueduct 5 end connects arc water distributor 2, and arc water distributor 2 is covered with aperture is
The apopore 3 of 1～2mm, thus form water distribution system, it is positioned over adsorption reaction district 1 upper packing layers
In.
Adsorption reaction district 1 is to be had adsorbing medium filler to fill by heavy metal to form, and selects raw
Thing manganese oxide, zeolite, three kinds of dielectric materials of haydite are filled with after uniformly mixing, and its mass ratio is
5.5-7:2.5-3.5:1.Side, adsorption reaction district 1 and bottom are provided with impervious barrier 6, and impervious barrier 6 is by height
Density polyethylene film is laid and is formed.
Phytoremediation district 10 is positioned at above adsorption reaction district, for a layer thickness 10～30cm soil,
Soil horizon surface grafting can the plant of enriching heavy metal, there is landscape effect simultaneously.Preferentially select Scolopendra
Grass, Sedum alfredii Hance and Radix Phytolaccae.
Quickly vadose region 7 is positioned at the well casing periphery of pumped well, is filled with the less zeolite of particle diameter and quartz
Sand, its particle diameter is 2-4mm, and its mass ratio is 4-6:1.
Monitoring system includes at one Water-quality Monitoring Points 11 at water level monitoring point 12 and two, wherein, water level
Monitoring point 12 is placed in pumped well 13, and Water-quality Monitoring Points 11 is respectively placed in pumped well 13 and quickly oozes
In stream district 7.
The subsoil water heavy metal pollution prosthetic device that the present invention provides, its process includes:
1) contaminated by heavy metals subsoil water is first under the extracting effect of pumping system, passes through water distribution
System enters adsorption reaction district；
2) heavy metal in adsorption reaction district, reaction medium attached ground water, reaches to repair underground
Water purpose；
3) simultaneously, the heavy metal in subsoil water is inhaled by the hyperaccumulative plant of phytoremediation district plantation
Receive enrichment, further enhance the repairing effect of heavy metal in subsoil water.
4) subsoil water after processing enters quick vadose region under gravity, and passes through seepage effect
Under ooze and be back in groundwater environment.
5) water quality in groundwater level, pumped well and in quick vadose region is entered by monitoring system at regular intervals
Row monitoring.
Embodiment 1
The subsoil water heavy metal pollution of a certain mining tailing wasteland is serious, and the content of beary metal in its subsoil water is:
Zn19.15mg/L；Cu17.64mg/L；Mn5.73mg/L；Pb66.73mg/L.By on-the-spot ground
Lower water pollution range is investigated with degree, the device provided according to the present invention, completes its design-build.Its
In, adsorption reaction district selects biological oxidation manganese, zeolite, three kinds of dielectric materials of haydite uniformly to mix laggard
Row is filled, and its mean diameter is 5-10mm, and its mass ratio is 6:3:1；Phytoremediation district selects east
South Herba hylotelephii erythrosticti and Radix Phytolaccae, plantation ratio is 1:1；Quickly mean diameter is filled in vadose region is the boiling of 2-4mm
Stone and quartz sand uniformly mix filling and form, and its mass ratio is 4.5:1.By monitoring system at regular intervals from
Heavy metal concentration in sampling detection subsoil water in target water-bearing layer and quick vadose region.Result shows,
It is 15m that this device processes the water yield3/ d, Zn lowering of concentration is to 0.82mg/L, and clearance is 95.7%；
Cu lowering of concentration is to 1.24mg/L, and clearance is 93.0%；Mn lowering of concentration, to 0.26mg/L, is gone
Except rate is 95.5%；Pb lowering of concentration is to 2.06mg/L, and clearance is 96.9%.
Embodiment 2
A certain solid waste stores up district, and in its subsoil water, As content is 2.04mg/L；Cd content is
3.84mg/L；Pb content is 7.53mg/L.The device provided according to the present invention, completes its design and builds
Make.Wherein, adsorption reaction district selects biological oxidation manganese, zeolite, three kinds of dielectric materials of haydite uniformly to mix
Being filled with after conjunction, its mean diameter is 5-10mm, and its mass ratio is 7:3:1；Phytoremediation district
Selecting Sedum alfredii Hance and Herba pteridis vittatae, a number ratio for plantation is 1:1；Quickly average particle is filled in vadose region
Footpath is the zeolite of 2-4mm and quartz sand uniformly mixes filling and forms, and its mass ratio is 6:1.By prison
It is dense that examining system periodically samples the heavy metal in detection subsoil water from target water-bearing layer and quick vadose region
Degree.Result shows, it is 10m that this device can realize processing the water yield3/ d, As lowering of concentration to 0.28mg/L,
Clearance is 93.3%；Cd lowering of concentration is to 0.029mg/L, and clearance is 92.4%；Under Pb concentration
Being down to 0.26mg/L, clearance is 95.5%.
Claims (7)
1. a subsoil water heavy metal pollution prosthetic device, by pumping system, water distribution system, absorption
Reaction zone, phytoremediation district, quick vadose region and monitoring system composition；Wherein:
Pumping system includes:
Pumped well, gos deep into target water-bearing layer, and suction pump is arranged on the well head of pumped well or is positioned at target
Below aquifer water plane, drinking-water pipe is plugged in the middle of well screen, and drainage screen is installed on the water intaking of drinking-water pipe
At Dian；
Water distribution system includes:
Some aqueducts, its one end is all connected with drinking-water pipe and rounded radial is uniformly distributed,
Arc water distributor connects aqueduct end, and arc water distributor is provided with multiple apopore, and water distribution system sets
It is placed in adsorption reaction district upper packing layers；
Adsorption reaction district is to be had adsorbing medium filler to fill by heavy metal to form, adsorption reaction
Side, district and bottom are provided with impervious barrier；The medium filler in adsorption reaction district be biological oxidation manganese, zeolite,
The mixed uniformly filler of haydite in mass ratio 5.5-7: 2.5-3.5: 1；
Phytoremediation district is positioned at above adsorption reaction district, is one layer of soil, the soil horizon in phytoremediation district
Surface grafting can the plant of enriching heavy metal；
Quickly vadose region is positioned at the well casing periphery of pumped well, is filled with zeolite and quartz sand；
Monitoring system includes:
Water-quality Monitoring Points at water level monitoring point and two at one, water level monitoring point is placed in pumped well, water
Quality supervision measuring point is respectively placed in pumped well and quick vadose region.
Subsoil water heavy metal pollution prosthetic device the most according to claim 1, wherein, well screen
It is positioned at below water-bearing layer water level 1.5～7.5m.
Subsoil water heavy metal pollution prosthetic device the most according to claim 1, wherein, arc
Micropore size on water distributor is 1～2mm.
Subsoil water heavy metal pollution prosthetic device the most according to claim 1, wherein, soil
Layer surface grafting can the plant of enriching heavy metal be Herba pteridis vittatae, Sedum alfredii Hance and Radix Phytolaccae.
Subsoil water heavy metal pollution prosthetic device the most according to claim 1, wherein, quickly
The zeolite of vadose region filling and quartz sand, its particle diameter is 2-4mm, and its mass ratio is 4-6: 1.
Subsoil water heavy metal pollution prosthetic device the most according to claim 1, wherein, antiseepage
Layer is laid by density polyethylene film with high and is formed.
7. utilize subsoil water heavy metal pollution prosthetic device described in claim 1 to carry out the method repaired,
Its process includes:
1) contaminated by heavy metals subsoil water is first under the extracting effect of pumping system, passes through water distribution
System enters adsorption reaction district；
2) heavy metal in adsorption reaction district medium filling adsorption subsoil water, reaches to repair underground
Water purpose；
3) can the plant of enriching heavy metal the heavy metal in subsoil water being carried out of phytoremediation district plantation
Absorb enrichment, further the repairing effect of heavy metal in strengthening subsoil water；
4) subsoil water after processing enters quick vadose region under gravity, and passes through seepage effect
Under ooze and be back in groundwater environment；
5) water quality in groundwater level, pumped well and in quick vadose region is entered by monitoring system at regular intervals
Row monitoring.
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| CN201310651525.7A CN104692531B (en) | 2013-12-04 | 2013-12-04 | A kind of subsoil water heavy metal pollution prosthetic device |
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| CN201310651525.7A CN104692531B (en) | 2013-12-04 | 2013-12-04 | A kind of subsoil water heavy metal pollution prosthetic device |
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| CN104692531B true CN104692531B (en) | 2016-08-17 |
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| CN105399245B (en) * | 2015-12-18 | 2018-12-11 | 江苏维尔利环保科技股份有限公司 | The prosthetic device and its restorative procedure of hexavalent chromium polluted underground water |
| CN105414160B (en) * | 2015-12-18 | 2018-06-15 | 江苏维尔利环保科技股份有限公司 | The devices and methods therefor of the repairing hexavalent chromium polluted underground water of up flow type PRB technologies |
| CN107739083B (en) * | 2017-10-31 | 2022-01-04 | 爱土工程环境科技有限公司 | In-situ remediation method for permeable reactive barrier of cyanide-containing underground water |
| CN107986555A (en) * | 2017-11-14 | 2018-05-04 | 中电建水环境治理技术有限公司 | Ground water circulation restorative procedure and system based on function pipe network |
| CN108906865A (en) * | 2018-06-19 | 2018-11-30 | 绍兴市上虞众联环保有限公司 | A kind of method of soil remediation |
| CN109174933A (en) * | 2018-08-28 | 2019-01-11 | 山东碧泉环境工程技术有限公司 | A kind of heat reinforcing oil skimming well repair system of underground water LNAPL pollution processing |
| CN109775862B (en) * | 2019-01-30 | 2020-12-22 | 中国环境科学研究院 | Permeable reaction wall and in-situ bioremediation method for groundwater pollution |
| CN113292205B (en) * | 2021-06-08 | 2022-09-23 | 浙江工业大学 | Heavy metal polluted water body remediation method combining filter column and phytoremediation |
| CN115340213A (en) * | 2022-08-19 | 2022-11-15 | 中南大学 | Organic pollution groundwater prosthetic devices |
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| AU2881600A (en) * | 1999-02-18 | 2000-09-04 | Shell Oil Company | Remediation of contaminated groundwater |
| CN101570365A (en) * | 2009-06-05 | 2009-11-04 | 钟泳滢 | Constructed wetland treatment method of heavy metal wastewater from factories |
| CN101781061B (en) * | 2010-03-02 | 2011-11-16 | 河北农业大学 | Method for plant arrangement of vertical flow and horizontal subsurface flow combined artificial wetland |
| CN101823801B (en) * | 2010-03-23 | 2012-09-26 | 中国地质大学（武汉） | Technique of in-situ remediation of high As groundwater |
| CN102557348B (en) * | 2012-01-09 | 2013-05-22 | 中国环境科学研究院 | Soil remediation and sewage purification integrated ecological treatment device |
| CN102583712B (en) * | 2012-02-21 | 2014-06-04 | 清华大学 | Method and system by using micro-nano bubbles to perform reinforcement in-situ remediation on polluted ground water |
| CN203229420U (en) * | 2013-05-09 | 2013-10-09 | 浙江海洋学院 | Constructed wetland for treating heavy metal wastewater |
| CN203269736U (en) * | 2013-05-29 | 2013-11-06 | 舟山市智海技术开发有限公司 | Combined type artificial wetland system for treating heavy-metal sewage |
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