CN107020297A - A kind of contaminated soil, underground water reaction in-situ band repair system and restorative procedure - Google Patents
A kind of contaminated soil, underground water reaction in-situ band repair system and restorative procedure Download PDFInfo
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- CN107020297A CN107020297A CN201710389927.2A CN201710389927A CN107020297A CN 107020297 A CN107020297 A CN 107020297A CN 201710389927 A CN201710389927 A CN 201710389927A CN 107020297 A CN107020297 A CN 107020297A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biotechnology (AREA)
- Mycology (AREA)
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- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of contaminated soil, underground water reaction in-situ band repair system, including：Dc source；Even number of electrodes well, is opened in the downstream direction of pollution sources direction of groundwater flow, and the electrode bottom is located at the electrolyte in soil aquifer, electrode wells with the formation of Groundwater infiltration electrode wells；Even number of electrodes, its quantity is equal with the quantity of electrode wells, and an electrode is plugged in each electrode wells, and electrode is inserted into the bottom of electrode wells, and the height of electrode is not less than liquid level of electrolyte height in electrode wells；Half electrode connects the positive pole of dc source, and second half electrode connects the negative pole of dc source；Extracting and processing system, the electrolyte in each electrode wells is extracted by the pipeline provided with filter.Contaminated soil, the underground water reaction in-situ band repair system of the present invention, is intercepted and is concentrated beneficial to by the pollutant in underground water, beneficial to the diffusion and migration of nutriment.
Description
Technical field
The present invention relates to a kind of contaminated soil, the home position strengthening repair system of underground water, the pollution belonged in environmental protection
Treatment process field.
Background technology
Pump-and-treat technology is widely used in the recovery project of polluted underground water, and its principle is by contaminated underground
Water is extracted out, harmless treatment is carried out to it using the water processing establishment on ground, the water after processing is up to standard can be with recharge to underground
Or be drained into surface water body.
Because pump-and-treat system needs to carry out the extraction of a large amount of water bodys, generally require and lay substantial amounts of draw water in restoring area
Well, if place does not possess the condition for building a large amount of wells, will influence the implementation of reparation；The extraction of a large amount of underground water, can influence
The local hydrogeologic condition of restoring area, may have undesirable effect to the stabilization of construction of structures around；A large amount of underground water
Pump-and-treat system, add the cost of repairing construction；Be drawn to it is up to standard after, after a period of time, often occur that " bounce-back is existing
As ", i.e., the content of underground water pollutant is again exceeded, and pump-and-treat system repairing efficiency can be caused often longer.
The content of the invention
In order to solve the above-mentioned technical problem, repaiied the invention provides a kind of contaminated soil, the barrier of underground water reaction in-situ band
Complex system.
A kind of contaminated soil that the present invention is provided, underground water reaction in-situ band repair system, including：
Dc source；
Even number of electrodes well, is opened in the downstream direction of pollution sources direction of groundwater flow, and the electrode bottom is located at soil water-containing
There is the electrolyte of Groundwater infiltration electrode wells formation in layer, electrode wells；
Even number of electrodes, its quantity is equal with the quantity of electrode wells, and an electrode is plugged in each electrode wells, and electrode is inserted into electrolysis
In liquid（Preferably, electrode is inserted into the bottom of electrode wells, and the height of electrode is not less than liquid level of electrolyte height in electrode wells）；One
Half electrode connects the positive pole of dc source, and second half electrode connects the negative pole of dc source；
Extracting and processing system, the electrolyte in each electrode wells is extracted by the pipeline provided with filter.
As optimal technical scheme, the electrode wells for being inserted with the electrode of connection DC power anode are connected direct current with being inserted with
The electrode wells of the electrode of power cathode are interspersed.
As the above-mentioned contaminated soil of optimal technical scheme, underground water reaction in-situ band repair system, in addition to：Adjuvant
Agent injection well, is arranged on downstream, the upstream of electrode wells of pollution sources direction of groundwater flow, and the bottom of assistant medicament injection well is located at soil
Earth water-bearing layer；Wherein, the depth of assistant medicament injection well is not more than electrode well depth, and the internal diameter of assistant medicament injection well is not less than
5cm。
As optimal technical scheme, above-mentioned contaminated soil, underground water reaction in-situ band repair system, in addition to：Monitoring
Well, is arranged on the downstream direction of the direction of groundwater flow of electrode wells, apart from electrode wells 5-10m, and the quantity of monitoring well is no less than electrode
The quantity of well.
As optimal technical scheme, electrode wells internal diameter is not less than 6cm, and the spacing of electrode wells is in the range of 4-5m.
As optimal technical scheme, the dc source is DC frequency-changing power supply；The electrode be carbon steel, iron, coke or
Graphite.
The present invention also provides the restorative procedure of above-mentioned contaminated soil, underground water reaction in-situ with repair system, including such as
Lower step：
1）After electrode is connected and is powered with dc source, in the presence of DC electric field, underground water flows through reaction zone repair system
When, powered contaminated ion or polarity organic pollution in underground water can be enriched in the electrolyte of electrode wells；
2）Electrolyte in electrode wells is drawn in extracting and processing system, electrolysis up to standard will be handled by harmless treatment
Liquid recharge is into electrode wells.
As optimal technical scheme, the dc source is DC frequency-changing power supply, and the restorative procedure also includes：Step 3）
Switch the polarity of the both positive and negative polarity of dc source, repeat step 1）~2）；Wherein, step 3）Repeat at least one times.
As optimal technical scheme, the contaminated soil, underground water reaction in-situ band repair system also include：Assistant medicament
Injection well, is arranged on downstream, the upstream of electrode wells of pollution sources direction of groundwater flow, and the bottom of assistant medicament injection well is located at soil
Water-bearing layer；The restorative procedure also comprises the following steps：Step 1）~3）While energization, added into assistant medicament injection well
The medicament for being conducive to microorganism to grow.
As optimal technical scheme, the contaminated soil, underground water reaction in-situ band repair system also include：Monitoring well,
It is arranged on the downstream direction of the direction of groundwater flow of electrode wells；The restorative procedure also includes：Underground water is detected by monitoring well
Water quality.
Beneficial effects of the present invention include：
1. the contaminated soil of the present invention, underground water reaction in-situ band repair system, are blocked beneficial to by the pollutant in underground water
Cut and concentrate, beneficial to the diffusion and migration of nutriment.
2. the use of contaminated soil, underground water reaction in-situ with repair system of the present invention, is only extracted out to electrolyte
Processing, it is to avoid polluted underground water is carried out it is substantial amounts of extract out, reduce energy consumption and cost, reduce steady to restoring area geology
Qualitatively influence.
3. the contaminated soil of the present invention, underground water reaction in-situ band repair system have anode and negative electrode periodically to switch,
So as to ensure that soil and groundwater pH is controlled in predeterminated level.
4. the contaminated soil of the present invention, underground water reaction in-situ band repair system Anodic, catholyte are integrated into list
In only closed loop pumping out system, the pollutant in underground water is caught by applying voltage, is adjusted and incited somebody to action by electrolyte
Electrolyte is periodically removed, so as to realize the removal to pollutant.
5. the present invention contaminated soil, underground water reaction in-situ with repair system can electrode front end assistant medicament
Add in well and add medicament, the scattered of nutriment is beneficial to by electric field, so that degraded of the enhancement microbiological to pollutant.
6. the contaminated soil of the present invention, underground water reaction in-situ can be certain with the electrode and electric field in repair system
The temperature of soil is improved in degree, beneficial to the degraded of microbe.
7. the contaminated soil of the present invention, underground water reaction in-situ band repair system can be generated electricity using solar panels,
Reduce engineering energy consumption.
8. the contaminated soil of the present invention, underground water reaction in-situ band repair system can be not only used for contaminated soil, underground
Water is repaired（Organic matter, inorganic matter are suitable for）, it may also be used for coastal area prevents the engineering of sea water intrusion underground water.
Brief description of the drawings
Contaminated soil, underground water reaction in-situ band repair system structural representations of the Fig. 1 for the present invention.
Embodiment
With reference to specific embodiment, the invention will be further described, so that those skilled in the art can be more preferable
Understand the present invention and can be practiced, but illustrated embodiment is not as the restriction to invention.
As shown in figure 1, the contaminated soil of the present invention, underground water reaction in-situ band system, including：
Dc source 1, dc source is DC frequency-changing power supply, can be powered by outside electric power network, can also pass through solar panels
Generate electricity.
Even number of electrodes well, is opened in pollution sources A direction of groundwater flow X downstream direction, and electrode bottom is located at soil
Water-bearing layer.There is the electrolyte of Groundwater infiltration electrode wells formation in electrode wells.Electrode wells internal diameter is not less than 6cm（It is general optional
Select 8cm）, the spacing of electrode wells is in the range of 4-5m；Electrode wells also serve as the extraction well of electrolyte simultaneously, are electrolysed liquid treating system
For conventional Waste Water Treatment（Handling process can be adjusted according to the different of process object）,
Even number of electrodes, its quantity is equal with the quantity of electrode wells, and an electrode is plugged in each electrode wells, and electrode is inserted into electrolysis
In liquid（Preferably, electrode is inserted into the bottom of electrode wells, and the height of electrode is not less than liquid level of electrolyte height in electrode wells）.Its
In, half electrode connects the positive pole of dc source, and second half electrode connects the negative pole of dc source；It is inserted with connection dc source
The electrode wells of the electrode of positive pole（Abbreviation anode well）4 electrode wells with being inserted with the electrode for being connected DC power cathode（It is referred to as cloudy
Pole well）5 are interspersed（And distributed anode well around negative electrode well, negative electrode well is distributed around anode well）.Electrode is carbon steel, iron, Jiao
The conductive material such as carbon or graphite, typically with diameter 5cm carbon steel rod/iron staff（Or other nonmetallic materials）It is used as electrode.
Electrode wells（And electrode）Quantity adjusted according to place actual conditions, general no less than 4 mouthfuls wells.
Extracting and processing system 3, the electrolyte in each electrode wells is extracted by the pipeline provided with filter；
Assistant medicament injection well 2, is arranged on downstream, the upstream of electrode wells of pollution sources direction of groundwater flow, assistant medicament injection well
Bottom be located at soil aquifer；Wherein, the depth of assistant medicament injection well is not more than electrode well depth, assistant medicament injection well
Internal diameter be not less than 5cm.In order to promote the degraded of microbe in soil and groundwater, it can be injected to assistant medicament
It is added with well 2 and is beneficial to the medicament that microorganism grows.
Monitoring well（Not shown in figure）, the downstream direction of the direction of groundwater flow of electrode wells is arranged on, apart from electrode wells 5-
10m, the quantity of monitoring well is no less than the quantity of electrode wells.
The restorative procedure of contaminated soil, underground water reaction in-situ with repair system of the present invention, comprises the following steps：
1）After electrode is connected and is powered with dc source, in the presence of DC electric field, underground water flows through reaction zone repair system
When, powered contaminated ion or polarity organic pollution in underground water can be enriched in the electrolyte of electrode wells；
2）Electrolyte in electrode wells is drawn in extracting and processing system 3, electricity up to standard will be handled by harmless treatment
Liquid recharge is solved into electrode wells；
3）Switch the polarity of the both positive and negative polarity of dc source, repeat step 1）~2）；Wherein, step 3）Repeat at least one times；
4）Step 1）~3）While energization processing, the medicament for being conducive to microorganism to grow is added into assistant medicament injection well 2.
5）The water quality of underground water is detected by monitoring well.
The present invention is further described with a specific embodiment below：
As shown in figure 1, the contaminated soil of the present embodiment, underground water reaction in-situ band system, including：Dc source 1, electrode and electricity
Pole well, electrolyte extracting and processing system 3, assistant medicament injection well 2 etc..
Wherein, dc source 1 can regular switch polarity, supply voltage is 100V.
Electrode wells are arranged on Pollution Plume downstream edge, apart from pollution sources about 35m, there is provided 4 electrode wells（2 are inserted with
Connect the electrode wells 4 of the electrode of DC power anode（Abbreviation anode well）, 2 be inserted with connection DC power cathode electrode
Electrode wells 5（Abbreviation negative electrode well）, it is interspersed）, adjacent electrode well spacing 5m.Electrode wells internal diameter is 8cm, using pvc pipe conduct
Well casing；Negative electrode and anode are diameter 5cm carbon steel rod, length 12m.
Assistant medicament injection well 2 sets 3 mouthfuls altogether in electrode wells updrift side, apart from electrode wells 3.5m, adjacent medicament note
Enter well spacing for 6m, using diameter 5cm pvc pipe as well casing, well casing length 9m, sieve aperture is opened in below earth's surface 3m, thereto
Add the nutriment rich in N, C（Such as ammonium carbonate）, rainy season addition solid, the solution of dry season addition 50%.
It is powered after 2 weeks, the electrolyte in anode well, negative electrode well is drawn in electrolyte extracting and processing system 3, passed through
Harmless treatment will handle electrolyte recharge up to standard into electrode wells, and switch the polarity of dc source 1；Continue to be powered 2 weeks,
Then extract the electrolyte in electrode wells out to be drawn in electrolyte extracting and processing system 3, reach processing by harmless treatment
Target electrolyte recharge switches the polarity of dc source 1 into electrode wells；So repeat the above steps, as pollutant is dense
The continuous reduction of degree, the cycle that electrolyte is extracted out can extend to 3 weeks or 4 weeks, and the switching cycle of DC power polarity is also corresponding
Change.
Monitoring well is arranged on electrode wells downstream, and apart from electrode wells 6m, 6 mouthfuls of monitoring wells, the spacing of adjacent monitoring well are set altogether
For 5m；Energization reparation initial stage（First 3 months）, monthly monitor the water quality of underground water, later stage（9 months afterwards）Season monitors 1 time.
The system has been run 12 months altogether, and ammonium carbonate 150kg is added altogether（Solid）.After operation 3 months, in soil in soil
The content of dichloro-benzenes is declined by the content that total petroleum hydrocarbon in 0.25mg/kg, soil is dropped to for 281.8mg/kg by 6407mg/kg
To less than 300mg/kg；The content of dichloro-benzenes is decreased below in 0.5mg/L, underground water total oil by 13.5mg/L in underground water
The content of hydrocarbon is decreased below 5mg/L by 820mg/L.
Embodiment described above is only the preferred embodiment to absolutely prove the present invention and being lifted, protection model of the invention
Enclose not limited to this.Equivalent substitute or conversion that those skilled in the art are made on the basis of the present invention, in the present invention
Protection domain within.Protection scope of the present invention is defined by claims.
Claims (10)
1. a kind of contaminated soil, underground water reaction in-situ band repair system, it is characterised in that including：
Dc source；
Even number of electrodes well, is opened in the downstream direction of pollution sources direction of groundwater flow, and the electrode bottom is located at soil water-containing
There is the electrolyte of Groundwater infiltration electrode wells formation in layer, electrode wells；
Even number of electrodes, its quantity is equal with the quantity of electrode wells, and an electrode is plugged in each electrode wells, and electrode is inserted into electrolysis
In liquid；Half electrode connects the positive pole of dc source, and second half electrode connects the negative pole of dc source；
Extracting and processing system, the electrolyte in each electrode wells is extracted by the pipeline provided with filter.
2. contaminated soil according to claim 1, underground water reaction in-situ band repair system, it is characterised in that be inserted with
The electrode wells for connecting the electrode of DC power anode are interspersed with being inserted with the electrode wells for the electrode for being connected DC power cathode.
3. contaminated soil according to claim 1, underground water reaction in-situ band repair system, it is characterised in that also include：
Assistant medicament injection well, is arranged on downstream, the upstream of electrode wells of pollution sources direction of groundwater flow, the bottom of assistant medicament injection well
Positioned at soil aquifer；Wherein, the depth of assistant medicament injection well is not more than electrode well depth, the internal diameter of assistant medicament injection well
Not less than 5cm.
4. contaminated soil according to claim 1, underground water reaction in-situ band repair system, it is characterised in that also include：
Monitoring well, is arranged on the downstream direction of the direction of groundwater flow of electrode wells, apart from electrode wells 5-10m, and the quantity of monitoring well is no less than
The quantity of electrode wells.
5. contaminated soil according to claim 1, underground water reaction in-situ band repair system, it is characterised in that electrode wells
Internal diameter is not less than 6cm, and the spacing of electrode wells is in the range of 4-5m.
6. contaminated soil according to claim 1, underground water reaction in-situ band repair system, it is characterised in that described straight
Stream power supply is DC frequency-changing power supply；The electrode is carbon steel, iron, coke or graphite.
7. the restorative procedure of contaminated soil, underground water reaction in-situ with repair system described in claim 1, it is characterised in that
Comprise the following steps：
1）After electrode is connected and is powered with dc source, in the presence of DC electric field, underground water flows through reaction zone repair system
When, powered contaminated ion or polarity organic pollution in underground water can be enriched in the electrolyte of electrode wells；
2）Electrolyte in electrode wells is drawn in extracting and processing system, electrolysis up to standard will be handled by harmless treatment
Liquid recharge is into electrode wells.
8. restorative procedure according to claim 7, it is characterised in that the dc source is DC frequency-changing power supply, described
Restorative procedure also includes：Step 3）Switch the polarity of the both positive and negative polarity of dc source, repeat step 1）~2）；Wherein, step 3）It can weigh
Again at least one times.
9. restorative procedure according to claim 8, it is characterised in that the contaminated soil, underground water reaction in-situ band are repaiied
Complex system also includes：Assistant medicament injection well, is arranged on downstream, the upstream of electrode wells, adjuvant of pollution sources direction of groundwater flow
The bottom of agent injection well is located at soil aquifer；The restorative procedure also comprises the following steps：Step 1）~3）While energization,
The medicament for being conducive to microorganism to grow is added into assistant medicament injection well.
10. restorative procedure according to claim 8, it is characterised in that the contaminated soil, underground water reaction in-situ band are repaiied
Complex system also includes：Monitoring well, is arranged on the downstream direction of the direction of groundwater flow of electrode wells；The restorative procedure also includes：It is logical
Cross the water quality that monitoring well detects underground water.
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| CN108128856A (en) * | 2018-02-05 | 2018-06-08 | 中国矿业大学 | Utilize the system of principle of electrophoresis control goaf filling weight metal transport |
| CN108526205A (en) * | 2018-05-22 | 2018-09-14 | 北京高能时代环境技术股份有限公司 | For polluting plot risk management and control band structure and method are reacted with the cylindricality of reparation |
| CN109127699A (en) * | 2018-08-31 | 2019-01-04 | 成都理工大学 | A kind of soil restoring device and application method using solar energy |
| CN109513738A (en) * | 2018-10-30 | 2019-03-26 | 中铁上海工程局集团有限公司 | A kind of underground pollution object migration control method based on BIM technology |
| CN110076187A (en) * | 2019-04-02 | 2019-08-02 | 亿利资源集团有限公司 | Electrode wells |
| CN112142255A (en) * | 2020-08-31 | 2020-12-29 | 苏州森旭生态科技有限公司 | Underground water pollution extraction circulation repair system |
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