CN104692531A - Underground water heavy metal pollution remediation device - Google Patents
Underground water heavy metal pollution remediation device Download PDFInfo
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- CN104692531A CN104692531A CN201310651525.7A CN201310651525A CN104692531A CN 104692531 A CN104692531 A CN 104692531A CN 201310651525 A CN201310651525 A CN 201310651525A CN 104692531 A CN104692531 A CN 104692531A
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- water
- heavy metal
- underground water
- absorption reaction
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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
-
- 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
-
- 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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
An underground water heavy metal pollution remediation device mainly includes a pumping system, a water distribution system, an adsorption reaction zone, a phytoremediation zone, a rapid seepage zone and a monitoring system. The adsorption reaction zone is filled with a medium for the adsorption of heavy metals in order to remove the heavy metals in the underground water. The phytoremediation zone is planted with hyperaccumulator with absorption and enrichment effects on heavy metals, so as to enhance the removal effect of heavy metals. The technique organically combines physical adsorption, chemical adsorption and phytoremediation, and can remediate heavy metals pollution of As, Zn, Cd, Mn, Cu, Cr and Pb and reach good removal effect; replacement of the adsorption reaction medium filler is simple; and the device has low operation cost, and is applicable to groundwater pollution sites in different water depths.
Description
Technical field
The invention belongs to groundwater pollution in field of Environment Protection and repair category, relating to a kind of device for repairing underground water heavy metal contamination particularly.
The invention still further relates to the method utilizing above-mentioned prosthetic device to carry out underground water heavy metal contamination reparation.
Background technology
Heavy metal is the important pollutent affecting quality of groundwater.In recent years, due to the high speed development of industry, the discharge of the trade effluents such as a large amount of plating, mining, printing and dyeing, electronics, causes heavy metal content in underground water sharply to increase, has a strong impact on HUMAN HEALTH and ecological environment security.Therefore, be badly in need of taking effective recovery technique heavy metal polluted underground water to administer.
At present, process underground water heavy metal contamination and mainly contain dystopy pump-and-treat system method and based technique for in-situ remediation.Though traditional dystopy pump-and-treat system method treatment cycle is short, effective, energy consumption is large, somewhat expensive.Based technique for in-situ remediation for repairing underground water heavy metal contamination mainly comprises permeable reactive barrier, electric repairing technique.During permeable reactive barrier process heavy metal contamination, after reaction medium loading capacity reaches capacity, in body of wall, the frequent replacing of dielectric material causes this technical operation cost to improve constantly; Electric repairing technique needs to carry out under sour environment condition, and rehabilitation cost is high, and the treatment time is long.As fully visible, the recovery technique being applied to underground water heavy metal contamination all has limitation in various degree in Practical Project, be difficult to realize, based on this, how economical, efficient, reasonably to carry out repairing and treating to underground water heavy metal contamination be the difficult problem faced outside Present Domestic.
Summary of the invention
The object of the present invention is to provide a kind of underground water heavy metal contamination prosthetic device.
Another object of the present invention is to provide a kind of method utilizing above-mentioned prosthetic device to carry out underground water heavy metal contamination reparation.
For achieving the above object, underground water heavy metal contamination prosthetic device provided by the invention, is made up of pumping system, water distribution system, absorption reaction district, phytoremediation district, fast vadose region and Monitoring systems;
Wherein:
Pumping system comprises:
Pumped well, is positioned at target waterbearing stratum, and lift pump is arranged on the well head of pumped well or is positioned at below target aquifer water plane, and drinking-water pipe is plugged in the middle of well sieve, and filtering net is installed on the dry point place of drinking-water pipe;
Water distribution system comprises:
Some aqueducts, its one end is all connected with drinking-water pipe and is roundedly radially uniformly distributed, and arc water distributor connects aqueduct end, and arc water distributor is provided with multiple posticum, and water distribution system is arranged in absorption reaction district upper packing layers;
Absorption reaction district has adsorbing medium filler to fill by heavy metal to form, and side, absorption reaction 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 absorption reaction district, is one deck soil, and the pedosphere surface grafting in phytoremediation district can the plant of enriching heavy metal;
The well casing that quick vadose region is positioned at pumped well is peripheral, is filled with zeolite and quartz sand;
Monitoring systems comprises:
One place's water level monitoring point and two place's Water-quality Monitoring Points, water level monitoring point is placed in pumped well, and Water-quality Monitoring Points is placed in pumped well and quick vadose region respectively.
Described underground water heavy metal contamination prosthetic device, wherein, well sieve is positioned at below waterbearing stratum water level 1.5 ~ 7.5m.
Described underground water heavy metal contamination prosthetic device, wherein, the micropore size on arc water distributor is 1 ~ 2mm.
Described underground water heavy metal contamination prosthetic device, wherein, the medium filler in absorption reaction district is bio-oxidation manganese, zeolite, the haydite mixed uniformly filler of 5.5-7:2.5-3.5:1 in mass ratio.
Described underground water heavy metal contamination prosthetic device, wherein, pedosphere surface grafting can the plant of enriching heavy metal be Herba pteridis vittatae, Sedum alfredii Hance and Phytolacca acinosa.
Described underground water heavy metal contamination prosthetic device, wherein, the zeolite that quick vadose region is filled and quartz sand, its particle diameter is 2-4mm, and its mass ratio is 4-6:1.
Provided by the inventionly utilize above-mentioned underground water heavy metal contamination prosthetic device to carry out the method for repairing, its process comprises:
1) first contaminated by heavy metals underground water under the extracting effect of pumping system, enter absorption reaction district by water distribution system;
2) heavy metal in absorption reaction district medium filling adsorption underground water, reaches and repairs underground water object;
3) plantation of phytoremediation district the plant of enriching heavy metal can carry out absorptions enrichment to the heavy metal in underground water, strengthen the repairing effect of heavy metal in underground water further;
4) underground water after process enters quick vadose region under gravity, and is back in groundwater environment by oozing under seepage effect;
5) Monitoring systems is regularly monitored the water quality in groundwater level, pumped well and in quick vadose region.
Described method, wherein, absorption reaction district medium filler is bio-oxidation manganese, zeolite, the haydite mixed uniformly filler of 5.5-7:2.5-3.5:1 in mass ratio.
Described method, wherein, pedosphere surface grafting can the plant of enriching heavy metal be Herba pteridis vittatae, Sedum alfredii Hance and Phytolacca acinosa.
Described method, wherein, is filled with zeolite and quartz sand in quick vadose region, its particle diameter is 2-4mm, and its mass ratio is 4-6:1.
Tool of the present invention has the following advantages:
1) the present invention can process the contents of many kinds of heavy metal ion such as As, Zn, Cd, Mn, Cu, Cr, Pb, and removal effect is good.
2) physics, chemisorption and phytoremediation technology organically combine by the present invention, enhance repairing effect, are more conducive to the removal of target contaminant.
3) the present invention does not limit by the target waterbearing stratum degree of depth, is applicable to the underground water in different depths target waterbearing stratum.
4) the absorption reaction district replacement in the present invention is simple, and easily construct, running cost is low.
Accompanying drawing explanation
Fig. 1 is the structural profile schematic diagram of underground water heavy metal contamination prosthetic device of the present invention.
Fig. 2 is the top plan view of Fig. 1.
Primary clustering nomenclature in accompanying drawing:
1 absorption reaction district; 2 arc water distributors; 3 posticums; 4 drinking-water pipes; 5 aqueducts; 6 impervious barriers; 7 quick vadose regions; 8 well sieves; 9 lift pumps; 10 phytoremediation districts; 11 Water-quality Monitoring Points; 12 water level monitoring points; 13 pumped wells; 14 filtering nets.
Embodiment
Underground water heavy metal contamination prosthetic device provided by the invention, primarily of pumping system, water distribution system, absorption reaction district, phytoremediation district, fast vadose region and Monitoring systems six part composition.First, contaminated by heavy metals underground water enters aqueduct by lift pump, and aqueduct, centered by well head, to be roundedly radially uniformly distributed.Groundwater flow enters arc water distributor through aqueduct end, enters absorption reaction district by the micropore on water distributor.Heavy metal is filled in absorption reaction district has the filling of adsorbing medium filler to form, and fill after selecting bio-oxidation manganese, zeolite, haydite three kinds of dielectric material Homogeneous phase mixing, its mass ratio is 5.5-7:2.5-3.5:1.In the process of underground water slow seepage flow in absorption reaction district, heavy metal fully contacts with the adsorption medium material in absorption reaction district and by Adsorption.It is 10 ~ 30cm soil that phytoremediation district covers a layer thickness, preferentially selects Herba pteridis vittatae, Sedum alfredii Hance and Phytolacca acinosa, the heavy metal in underground water is removed through inrichment, further enhances repairing effect at the hyperaccumulative plant of pedosphere surface plantation.Mixed uniformly zeolite and quartz sand are filled in quick vadose region, and the underground water behind phytoremediation district and the process of absorption reaction district enters quick vadose region under gravity, is back in groundwater environment by oozing under seepage effect.In addition, respectively place's Water-quality Monitoring Points is respectively set in pumped well and quick vadose region, water level monitoring point is set in pumped well, form Monitoring systems, regularly this contaminated site water level, water quality are monitored.
Below in conjunction with drawings and Examples, the invention will be further described.
Refer to Fig. 1 and Fig. 2.Prosthetic device of the present invention mainly comprises: pumping system, water distribution system, absorption reaction district, phytoremediation district, fast vadose region and Monitoring systems.Wherein:
Pumping system comprises pumped well 13, lift pump 9, drinking-water pipe 4 and filtering net 14.Pumped well 13 deep-seated is in target waterbearing stratum, and the pipe diameter of pumped well 13 is 60 ~ 160mm, and well sieve 8 is positioned at below waterbearing stratum water level 1.5 ~ 7.5m, and length is 3 ~ 9m; Lift pump 9 is arranged on the well head place (also can be installed on below target stains aquifer water plane 2 ~ 8m) of pumped well, can realize quantitatively drawing water of heavy metal contamination underground water; Drinking-water pipe 4 dry point is positioned at well and sieves 8 mid-ways, and diameter is 40 ~ 100mm; Filtering net 14 is installed on the dry point place of drinking-water pipe 4.
Water distribution system comprises some aqueducts 5 and water distributor 2.The diameter of aqueduct 5 is 30 ~ 60mm, and length is 2 ~ 10m, centered by the well head of pumped well 13, to be roundedly radially uniformly distributed; Aqueduct 5 end connects arc water distributor 2, arc water distributor 2 is covered with the posticum 3 that aperture is 1 ~ 2mm, thus forms water distribution system, is positioned in absorption reaction district 1 upper packing layers.
Absorption reaction district 1 has adsorbing medium filler to fill by heavy metal to form, and fill after selecting bio-oxidation manganese, zeolite, haydite three kinds of dielectric material Homogeneous phase mixing, its mass ratio is 5.5-7:2.5-3.5:1.Side, absorption reaction district 1 and bottom are provided with impervious barrier 6, and impervious barrier 6 is laid by density polyethylene film with high to form.
Phytoremediation district 10 is positioned at above absorption reaction district, is a layer thickness 10 ~ 30cm soil, can the plant of enriching heavy metal at pedosphere surface grafting, has landscape effect simultaneously.Preferentially select Herba pteridis vittatae, Sedum alfredii Hance and Phytolacca acinosa.
The well casing that quick vadose region 7 is positioned at pumped well is peripheral, and be 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 systems comprises place's water level monitoring point 12 and two place's Water-quality Monitoring Points 11, and wherein, water level monitoring point 12 is placed in pumped well 13, and Water-quality Monitoring Points 11 is placed in pumped well 13 and quick vadose region 7 respectively.
Underground water heavy metal contamination prosthetic device provided by the invention, its process comprises:
1) first contaminated by heavy metals underground water under the extracting effect of pumping system, enter absorption reaction district by water distribution system;
2) in absorption reaction district, the heavy metal in reaction medium attached ground water, reaches and repairs underground water object;
3) simultaneously, the hyperaccumulative plant of phytoremediation district plantation carries out absorption enrichment to the heavy metal in underground water, further enhances the repairing effect of heavy metal in underground water.
4) underground water after process enters quick vadose region under gravity, and is back in groundwater environment by oozing under seepage effect.
5) Monitoring systems is regularly monitored the water quality in groundwater level, pumped well and in quick vadose region.
Embodiment 1
The underground water heavy metal contamination of a certain mining tailing wasteland is serious, and the heavy metal content in its underground water is: Zn19.15mg/L; Cu17.64mg/L; Mn5.73mg/L; Pb66.73mg/L.Investigated by on-the-spot groundwater pollution scope and degree, according to device provided by the invention, complete its design-build.Wherein, absorption reaction district fills after selecting bio-oxidation manganese, zeolite, haydite three kinds of dielectric material Homogeneous phase mixing, and its median size is 5-10mm, and its mass ratio is 6:3:1; Phytoremediation district selects Sedum alfredii Hance and Phytolacca acinosa, and plantation ratio is 1:1; Quick vadose region is filled zeolite that median size is 2-4mm and quartz sand Homogeneous phase mixing and is filled and form, and its mass ratio is 4.5:1.By the heavy metal concentration of Monitoring systems regularly from target waterbearing stratum and quick vadose region in sampling detection underground water.Result shows, this device process water yield is 15m
3/ d, Zn density loss is to 0.82mg/L, and clearance is 95.7%; Cu density loss is to 1.24mg/L, and clearance is 93.0%; Mn density loss is to 0.26mg/L, and clearance is 95.5%; Pb density loss is to 2.06mg/L, and clearance is 96.9%.
Embodiment 2
A certain solid waste stores up district, and in its underground water, As content is 2.04mg/L; Cd content is 3.84mg/L; Pb content is 7.53mg/L.According to device provided by the invention, complete its design-build.Wherein, absorption reaction district fills after selecting bio-oxidation manganese, zeolite, haydite three kinds of dielectric material Homogeneous phase mixing, and its median size is 5-10mm, and its mass ratio is 7:3:1; Phytoremediation district selects Sedum alfredii Hance and Herba pteridis vittatae, and a number ratio for plantation is 1:1; Quick vadose region is filled zeolite that median size is 2-4mm and quartz sand Homogeneous phase mixing and is filled and form, and its mass ratio is 6:1.By the heavy metal concentration of Monitoring systems regularly from target waterbearing stratum and quick vadose region in sampling detection underground water.Result shows, it is 10m that this device can realize the process water yield
3/ d, As density loss is to 0.28mg/L, and clearance is 93.3%; Cd density loss is to 0.029mg/L, and clearance is 92.4%; Pb density loss is to 0.26mg/L, and clearance is 95.5%.
Claims (8)
1. a underground water heavy metal contamination prosthetic device, is made up of pumping system, water distribution system, absorption reaction district, phytoremediation district, fast vadose region and Monitoring systems; Wherein:
Pumping system comprises:
Pumped well, gos deep into target waterbearing stratum, and lift pump is arranged on the well head of pumped well or is positioned at below target aquifer water plane, and drinking-water pipe is plugged in the middle of well sieve, and filtering net is installed on the dry point place of drinking-water pipe;
Water distribution system comprises:
Some aqueducts, its one end is all connected with drinking-water pipe and is roundedly radially uniformly distributed, and arc water distributor connects aqueduct end, and arc water distributor is provided with multiple posticum, and water distribution system is arranged in absorption reaction district upper packing layers;
Absorption reaction district has adsorbing medium filler to fill by heavy metal to form, and side, absorption reaction district and bottom are provided with impervious barrier;
Phytoremediation district is positioned at above absorption reaction district, is one deck soil, and the pedosphere surface grafting in phytoremediation district can the plant of enriching heavy metal;
The well casing that quick vadose region is positioned at pumped well is peripheral, is filled with zeolite and quartz sand;
Monitoring systems comprises:
One place's water level monitoring point and two place's Water-quality Monitoring Points, water level monitoring point is placed in pumped well, and Water-quality Monitoring Points is placed in pumped well and quick vadose region respectively.
2. underground water heavy metal contamination prosthetic device according to claim 1, wherein, well sieve is positioned at below waterbearing stratum water level 1.5 ~ 7.5m.
3. underground water heavy metal contamination prosthetic device according to claim 1, wherein, the micropore size on arc water distributor is 1 ~ 2mm.
4. underground water heavy metal contamination prosthetic device according to claim 1, wherein, the medium filler in absorption reaction district is bio-oxidation manganese, zeolite, the haydite mixed uniformly filler of 5.5-7:2.5-3.5:1 in mass ratio.
5. underground water heavy metal contamination prosthetic device according to claim 1, wherein, pedosphere surface grafting can the plant of enriching heavy metal be Herba pteridis vittatae, Sedum alfredii Hance and Phytolacca acinosa.
6. underground water heavy metal contamination prosthetic device according to claim 1, wherein, the zeolite that quick vadose region is filled and quartz sand, its particle diameter is 2-4mm, and its mass ratio is 4-6:1.
7. underground water heavy metal contamination prosthetic device according to claim 1, wherein, impervious barrier is laid by density polyethylene film with high and is formed.
8. utilize underground water heavy metal contamination prosthetic device described in claim 1 to carry out the method for repairing, its process comprises:
1) first contaminated by heavy metals underground water under the extracting effect of pumping system, enter absorption reaction district by water distribution system;
2) heavy metal in absorption reaction district medium filling adsorption underground water, reaches and repairs underground water object;
3) plantation of phytoremediation district the plant of enriching heavy metal can carry out absorptions enrichment to the heavy metal in underground water, strengthen the repairing effect of heavy metal in underground water further;
4) underground water after process enters quick vadose region under gravity, and is back in groundwater environment by oozing under seepage effect;
5) Monitoring systems is regularly monitored the water quality in groundwater level, pumped well and in quick vadose region.
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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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| CN104692531A true CN104692531A (en) | 2015-06-10 |
| CN104692531B CN104692531B (en) | 2016-08-17 |
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Cited By (9)
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| CN105399245A (en) * | 2015-12-18 | 2016-03-16 | 江苏维尔利环保科技股份有限公司 | Remediation device of hexavalent chromium-polluted underground water, and remediation method thereof |
| CN105414160A (en) * | 2015-12-18 | 2016-03-23 | 江苏维尔利环保科技股份有限公司 | Device and method for repairing hexavalent chromium-polluted groundwater by virtue of up-flow PRB technology |
| CN107739083A (en) * | 2017-10-31 | 2018-02-27 | 爱土工程环境科技有限公司 | A kind of method of the permeable reactive barrier of underground water containing cyanogen in-situ immobilization |
| 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 |
| CN109775862A (en) * | 2019-01-30 | 2019-05-21 | 中国环境科学研究院 | A kind of permeable reaction wall and underground water pollution biology in situ renovation method |
| CN113292205A (en) * | 2021-06-08 | 2021-08-24 | 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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| CN105399245A (en) * | 2015-12-18 | 2016-03-16 | 江苏维尔利环保科技股份有限公司 | Remediation device of hexavalent chromium-polluted underground water, and remediation method thereof |
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| 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 |
| CN107739083A (en) * | 2017-10-31 | 2018-02-27 | 爱土工程环境科技有限公司 | A kind of method of the permeable reactive barrier of underground water containing cyanogen in-situ immobilization |
| 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 |
| CN109775862A (en) * | 2019-01-30 | 2019-05-21 | 中国环境科学研究院 | A kind of permeable reaction wall and underground water pollution biology in situ renovation method |
| 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 |
| CN113292205A (en) * | 2021-06-08 | 2021-08-24 | 浙江工业大学 | Heavy metal polluted water body remediation method combining filter column and phytoremediation |
| 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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