CN110526377A - A method of repairing chloro-carbon solvent polluted underground water - Google Patents
A method of repairing chloro-carbon solvent polluted underground water Download PDFInfo
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- CN110526377A CN110526377A CN201910823550.6A CN201910823550A CN110526377A CN 110526377 A CN110526377 A CN 110526377A CN 201910823550 A CN201910823550 A CN 201910823550A CN 110526377 A CN110526377 A CN 110526377A
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- chloro
- vitamin
- carbon solvent
- underground water
- valent iron
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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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
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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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of methods for repairing chloro-carbon solvent polluted underground water, transmit electronic capability using vitamin B12 as the catalysis of electronics intermediate transfer body, promote micron Zero-valent Iron to the reductive dechlorination of chloro-carbon solvent；By add in-place pressure injection enter or dystopy extraction after be added two ways a certain amount of micron order reduced iron powder and vitamin B12 are added into polluted underground water, make chloro-carbon solvent dechlorination, chloro-carbon solvent such as 1 after handling can be achieved, the dechlorination efficiency of 2,3- trichloropropanes reaches 80% or more.Compared to micron Zero-valent Iron system, this method can be improved 30% or more for the dechlorination efficiency of chloro-carbon solvent pollutant.Present invention can apply to contaminated site reparation, unique advantage and the good repair ability that obtains make micron Zero-valent Iron/vitamin B12 have fabulous application prospect in the dechlorination disposal process of chloro-carbon solvent polluted underground water.
Description
Technical field
The invention belongs to pollute organic pollution recovery technique field in environment, it is dirty to be related to a kind of reparation chloro-carbon solvent
Contaminate the method for underground water, and in particular to a kind of to repair chloro-carbon solvent polluted underground water using micron Zero-valent Iron/vitamin B12
Method.
Background technique
With Urbanization in China quickening and chemical industry extensive style development, Which Ecological Environment Faced serious danger
Machine.Organic dirt will lead to for the unreasonable storage disposition of organic solvent, discharge and unexpected leakage etc. in chemical production process
Dye object enters groundwater environment, seriously endangers and arrives the ecological balance and human health.Since its specific gravity is greater than 1, heavy nonaqueous phase liquid
When body penetrates into earth's surface or underground, it would be possible to which the downward infiltration migration in soil/body of groundwater causes serious pollution.Contain
The chloro-carbon solvent of one or more chlorine bromine atoms is common heavy nonaqueous phase liquid, since it is removed with good
Lipid energy is widely used in electronics industry, chemical industry manufacture, printing and dyeing coating, pharmaceutical synthesis and metal industry.Correlative study table
Bright, most of chloro-carbon solvents have carcinogenic, teratogenesis and mutagenic " three cause " effect to human body, are listed in the U.S., Europe
With the Environment Priority monitoring control pollutant of multiple countries and regions such as China.In recent years, about the pollution of chloro-carbon solvent
People are caused more widely to pay close attention to.
Currently, from underground water remove chloro-carbon solvent main method include physical absorption, electronation oxidation and
Microbial degradation etc..Wherein, physisorphtion is adsorbed organic molten containing chlorine using the active force between adsorbent and adsorption molecule
Agent, absorption disposition speed is fast, but chloro-carbon solvent is not removed in treatment process, and the toxic pollutant being adsorbed also relatively holds
Easily desorb；Microbial degradation method repairing efficiency is longer, receives water body environment factor and is affected.
Compared to above two method, electronation oxidizing process is very fast to chloro-carbon solvent degradation rate, leads in environmental protection
Domain is widely used.In view of the presence of chlorine element in chloro-carbon solvent keeps its betatopic oxidation difficulty larger, mesh
Preceding main use electronation technology carries out dechlorination to chloro-carbon solvent.Zeroth order is proposed from Gillham in 1994 et al.
Since iron reduction dechlorination technical treatment organic chloride, Zero-valent Iron recovery technique because of the features such as its is from a wealth of sources, simple process,
Have become a kind of more potential chloro-carbon solvent recovery technique.For zeroth order iron material, the Zero-valent Iron of Nano grade
Grain has very strong adsorption capacity and reactivity, but since the effects of its high surface energy, magnetic interaction and Van der Waals force leads
The unstability for causing nano zero-valence iron particle, to seriously constrain its efficiency applied in polluted underground water；In addition, high
Master Cost be also to limit the obstacle applied in environmental pollution reparation of nano zero-valence iron particle.In contrast, micron order zero
Valence iron material specific surface area is larger, low in cost, is more suitable for large-scale application in pollution amelioration industry；However, correlative study table
Bright, disposal efficiency of the micron order zeroth order iron material in chloro-carbon solvent reduction application be not high, in particular for chloralkane
Equal organic compounds, since its structure is relatively stable, reduction dechlorination efficiency is more limited.Therefore, to Zero-valent Iron recovery technique into
Row improvement, and it is applied to the reparation of chloro-carbon solvent, it is of great significance to contaminated site repairing and treating.
Summary of the invention
In order to overcome the shortcomings of that existing chloro-carbon solvent polluted underground water repairs that difficulty is big, low efficiency, at high cost, this hair
Bright to provide a kind of method for repairing chloro-carbon solvent polluted underground water, cost is controllable, material is easy to get, is easy to operate, repairs
It is high-efficient.
The invention discloses a kind of methods for repairing chloro-carbon solvent polluted underground water, are entered using add in-place pressure injection or different
The mode being added after the extraction of position adds micron Zero-valent Iron and vitamin B12 in chloro-carbon solvent polluted underground water, and utilization is micro-
Some catalytic effects that rice Zero-valent Iron is formed under vitamin B12 catalytic action carry out dechlorination to chloro-carbon solvent.
As a further improvement of the present invention, the Zero-valent Iron is commercially available reduced iron powder, and the vitamin B12 is commercially available food
Grade vitamin B12, the content range of vitamin B12 are 1%~99%.
As a further improvement of the present invention, the additive amount of the micron Zero-valent Iron is organochlorine molal quantity in reaction system
10~300 times；
Entered using add in-place pressure injection, the dosage of the vitamin B12 is the 0.5%~3% of anaerobic condition dry weight；It adopts
The mode being added after being extracted out with dystopy, the dosage of the vitamin B12 are dispose polluted-water quality 0.5%~3%.
As a further improvement of the present invention, the method for in-situ immobilization chloro-carbon solvent polluted underground water are as follows:
By the mixed solution of micron Zero-valent Iron and vitamin B12 using injection device pressurization injection water table contaminated area
Domain.
As a further improvement of the present invention, the specific implementation step of in-situ immobilization chloro-carbon solvent polluted underground water
Are as follows:
Step 1 passes through and collects place data and on-site land survey, adjusts to contaminated site soil and underground water pollution situation
It looks into, collection site soil and groundwater sample, chlorine organic solvent pollution situation is included to place and carries out entry evaluation；
Step 2 monitors in place in conjunction with contaminated sites situation in three mouthfuls of groundwater monitoring wells of place target area construction
The variation of pollutant concentration in underground water；
Micron Zero-valent Iron/vitamin B12 medicament is injected into target in contaminated site using injection device pressurization by step 3
Region；
Step 4, the to schedule groundwater sample in interval acquisition place target area, analyze wherein target stains
The changes of contents of object and corresponding physical and chemical parameter, and medicament after-teeming is suitably carried out in conjunction with monitoring result.
As a further improvement of the present invention, the method for showering chloro-carbon solvent underground water are as follows:
After the extraction of chloro-carbon solvent polluted underground water, the micron Zero-valent Iron and vitamin B12 are added in water body,
And above-mentioned system is placed in closed stirring container under room temperature and is reacted.
As a further improvement of the present invention, the speed of agitator of the closed stirring container is 10~100r/min.
As a further improvement of the present invention, content of organic chloride range is 5~2500mg/L in body of groundwater.
Compared with prior art, the invention has the benefit that
1, operating procedure is simple: restorative procedure of the invention only needs to add into chloro-carbon solvent polluted underground water body
A certain amount of micron of Zero-valent Iron and vitamin B12 are not necessarily to other complex appts；It is catalyzed using micron Zero-valent Iron in vitamin B12
The lower some catalytic effects formed of effect, carry out dechlorination to chloro-carbon solvent；
2, repair materials are safe: the micron zero-valent iron particle and vitamin B12 added in restorative procedure of the invention are
Nontoxic chemicals, repair materials safety non-pollution.
3, rehabilitation cost is low: restorative procedure of the invention is inexpensively easy using micron order reduced iron powder and vitamin B12 material
, compared to nano zero valence iron recovery technique, rehabilitation cost is substantially reduced.
4, applied widely: restorative procedure of the invention is covered add in-place pressure injection and is entered and two kinds of processing of disposition after dystopy extraction
Method, strong flexibility can be widely applied to the reparation of chloro-carbon solvent polluted underground water, while in 5 DEG C or so of low temperature item
Also there is good repairing effect under part, can effectively solve the problems, such as that conventional biochemical restorative procedure is not low temperature resistant.
5, remediation efficiency is high: the addition of vitamin B12 catalyst in restorative procedure of the invention, being capable of effective Accelerating reduction
The transfer rate of electronics during dechlorination reaction, and then promote micron Zero-valent Iron to the reduction dechlorination rate of chloro-carbon solvent,
The more simple micron Zero-valent Iron treatment effect of the degradation efficiency of chloro-carbon solvent can be improved 30% or more after processing.
Detailed description of the invention
Fig. 1 be the embodiment of the present invention 1 disclosed in be individually added into micron order Zero-valent Iron and mixing be added micron order Zero-valent Iron and
After vitamin B12, to the degradation rate comparison diagram of 1,2,3- trichloropropane of pollutant；
Fig. 2 be the embodiment of the present invention 1 disclosed in be individually added into micron order Zero-valent Iron and mixing be added micron order Zero-valent Iron and
After vitamin B12, to pollutant 1, the degradation rate comparison diagram of 2- dichloropropane；
Fig. 3 be the embodiment of the present invention 1 disclosed in be individually added into micron order Zero-valent Iron and mixing be added micron order Zero-valent Iron and
After vitamin B12, to pollutant 1, the degradation rate comparison diagram of 3- dichloropropane；
Fig. 4 is after micron order Zero-valent Iron and vitamin B12 is added in the disclosed mixing of the embodiment of the present invention 2, to 1,2- dichloro
The degradation rate schematic diagram of ethane；
Fig. 5 be the embodiment of the present invention 3 disclosed in be individually added into micron order Zero-valent Iron and mixing be added micron order Zero-valent Iron and
After vitamin B12, to the degradation rate comparison diagram of 1,2- dichloroethanes.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The present invention is described in further detail with reference to the accompanying drawing:
The present invention provides a kind of method for repairing chloro-carbon solvent polluted underground water, is entered using add in-place pressure injection or dystopy
The mode being added after extraction adds micron Zero-valent Iron and vitamin B12 in chloro-carbon solvent polluted underground water, utilizes micron
Some catalytic effects that Zero-valent Iron is formed under vitamin B12 catalytic action carry out dechlorination to chloro-carbon solvent.Its
In:
Commercially available reduced iron powder can be used in micron Zero-valent Iron of the invention, reduced iron powder when pressing injection mode using add in-place
Diameter can meet 1000-3000 mesh, and preferable particle size is 2500 meshes；Reduced iron powder when adding manner after being extracted out using dystopy
Diameter can meet 200-300 mesh, preferably 200 meshes.For guarantee Zero-valent Iron dispose effect, can first with organic solvent as just oneself
Alkane, acetone etc. are by micron order zeroth order iron surface greasy dirt washes clean that may be present.Delicatessen food grade dimension can be used in vitamin B12
Raw element B12, vitamin B12 content range are 1%~99%, and preferred content is 5%~10%.
The additive amount of micron Zero-valent Iron is organochlorine mole in reaction system when the present invention uses add in-place to press injection mode
Several 50~300 times, preferred scope are 150~200 times；Vitamin B12 dosage is the 0.5%~3% of water-bearing layer dry weight, excellent
Selecting range is 1%；After using dystopy to extract out when adding manner micron Zero-valent Iron additive amount for organochlorine mole in reaction system
Several 10~200 times, preferred scope are 50~100 times；Vitamin B12 dosage is the 0.5%~2% of polluted-water quality,
Preferred scope is 1%.
Content of organic chloride range is 5~2500mg/L in body of groundwater of the invention.
When the present invention is using chloro-carbon solvent reparation is applied to after dystopy extraction, by chloro-carbon solvent polluted underground water
It is drawn in closed stirring container and adds micron Zero-valent Iron and vitamin B12 in water body, carry out confined reaction under room temperature；It is close
Closing speed of agitator in stirring container is 10~200r/min, and preferably speed of agitator is 100r/min.
When the present invention uses in-situ immobilization chloro-carbon solvent polluted underground water, micron Zero-valent Iron is mixed with vitamin B12
Solution is closed using Geoprobe or other injection devices pressurization injection water table Polluted area.
Specific implementation step is as follows:
1) by collection place data and on-site land survey, contaminated site soil and underground water pollution situation are investigated,
Collection site soil and groundwater sample include chlorine organic solvent pollution situation to place and carry out entry evaluation；
1. contaminated site related data is collected, such as meteorological condition, hydrogeology, topography and geomorphology, pollution history, land use
Etc. data；
2. understanding contaminated site actual conditions, the place inspection of the scene of a crime, checking data information are carried out；
3. formulating spot sampling plan simultaneously on above-mentioned working foundation in conjunction with situation finishing analysis checking data is examined on the spot
Prepare sampling tool and auxiliary appliance；
4. place sample collection analysis, makes an appraisal to pollution situation in place；
2) contaminated sites situation is combined, three mouthfuls of groundwater monitoring wells is built in place target area, monitors underground in place
The variation of water pollutant concentration；
3) micron Zero-valent Iron/vitamin B12 mixed solution is injected into using Geoprobe or the pressurization of other injection devices
Contaminated site region of interest within；
4) groundwater sample in interval acquisition place target area to schedule, analysis wherein target contaminant
Changes of contents and corresponding physical and chemical parameter, and medicament after-teeming is suitably carried out in conjunction with monitoring result.
The effect of micron Zero-valent Iron is that dechlorination is carried out to the chloro-carbon solvent in body of groundwater in the present invention, dimension life
Plain B12 function as electronics intermediate transfer body catalysed promoted micron Zero-valent Iron and the dechlorination of chloro-carbon solvent is anti-
It answers；When using in-situ immobilization chloro-carbon solvent polluted underground water, the dechlorination efficiency of chloro-carbon solvent is relatively simple micro- after processing
Rice Zero-valent Iron treatment effect can be improved 30% or more.
Below in conjunction with specific example, the present invention is further described, and embodiments of the present invention are not limited thereto.
Embodiment 1: dystopy application micron Zero-valent Iron/vitamin B12 disposes certain place 1,2,3- trichloropropane, 1,2- dichloro
The case of propane, 1.3- dichloropropane polluted underground water
From certain pollution water-bearing layer with a thickness of in the contaminated site of 6-9m extract 1,2,3- trichloropropane, 1,2- dichloropropane,
1.3- dichloropropane polluted underground water is placed in closed container to be refrigerated in 4 DEG C of refrigerator-freezers, three kinds of pollutants in the underground water
Original concentration is respectively as follows: 1,2,3- trichloropropane 86mg/L, 1,2- dichloropropane 25mg/L, 1,3- dichloropropane 53mg/L.Also
Former iron powder crosses 200 meshes, is cleaned with the hydrochloric acid of 0.5mol/L, after removing surface greasy dirt that may be present, is cleaned with deionized water
Clean and drying for standby under nitrogen protection.Weighing Alternate Restore iron powder 10g, (additive amount of micron Zero-valent Iron is in reaction system
50 times of organochlorine molal quantity), it is respectively charged into closed stirring container a, b that total volume is 1L, additionally incorporates and account for into b container
The vitamin B12 (10g) of polluted-water total amount~1%.For the oxygen for driving away remnants, guarantee the anaerobic environment of reaction system, to
It is the polluted underground water in container after nitrogen 30 minutes of 99.99%, mixing speed that purity is filled in above-mentioned a, b container
100r/min is reacted under room temperature.After reaching the default reaction time, quantitative detection is carried out by gas chromatograph after sampling.
The result shows that 1,2,3- trichloropropanes, 1,2- dichloropropane, 1,3- dichloro third in reaction system a (only adding micron Zero-valent Iron)
The degradation rate of alkane is followed successively by 5%, 10%, 18%, 1,2,3- tri- in reaction system b (addition micron Zero-valent Iron and vitamin B12)
Chloropropane, 1,2- dichloropropane, 1,3- dichloropropane degradation rate be followed successively by 84%, 65%, 88%, after adding vitamin B12
The degradation rate of pollutant 1,2,3- trichloropropane, 1,2- dichloropropane, 1,3- dichloropropane is respectively increased in micron order Zero-valent Iron
80%, 55%, 70%, as shown in Figure 1, 2, 3.
Embodiment 2: dystopy application micron Zero-valent Iron/vitamin B12 disposes certain place 1,2- dichloroethanes polluted underground water
Case
From certain pollution water-bearing layer with a thickness of extraction 1,2- dichloroethanes polluted underground water juxtaposition in the contaminated site of 10-16m
It is refrigerated in closed container in 4 DEG C of refrigerator-freezers, original concentration is 1328mg/L in the underground water.Reduced iron powder crosses 200 meshes, uses
The hydrochloric acid of 0.5mol/L cleans, and after removing surface greasy dirt that may be present, is cleaned up with deionized water and under nitrogen protection
Drying for standby.Weighing Alternate Restore iron powder 150g, (additive amount of micron Zero-valent Iron is 100 of organochlorine molal quantity in reaction system
Times), vitamin B12 medicament 10g (account for polluted-water gross mass~1%) is fitted into total volume as in the closed stirring container of 1L.
To drive away remaining oxygen, guarantees the anaerobic environment of reaction system, the nitrogen that purity is 99.99% is filled with into said vesse
After 30 minutes, the polluted underground water in container, mixing speed 100r/min is reacted under room temperature.Reach the default reaction time
Afterwards, quantitative detection is carried out by gas chromatograph after sampling.The result shows that the degradation rate of 1,2- dichloroethanes can reach after disposition
99%, as shown in Figure 4.
Embodiment 3: 1,2- dichloroethanes polluted underground water in in-situ applications micron Zero-valent Iron/vitamin B12 disposition place
Case
(1) dirty to certain 1,2- dichloroethanes contaminated site soil and underground water by collecting place data and on-site land survey
Dye situation is investigated, collection site soil and groundwater sample, understands underground water pollution situation in place；
(2) contaminated sites situation is combined, three mouthfuls of groundwater monitoring wells are respectively built in place target area a, b, monitors field
In ground in underground water pollutant concentration variation；
(3) reduced iron powder crosses 2500 meshes, is successively cleaned with the hydrochloric acid of 0.5mol/L and distilled water, and removal surface may deposit
Greasy dirt after drying for standby.Micron Zero-valent Iron/vitamin B12 medicament is injected into contaminated site using Geoprobe equipment
Target area a (aqueous layer depth 10-16m, region area 100m2, initial 1,2- dichloroethanes concentration are 2469mg/L), is added
Micron zeroth order weight of iron is the 0.8% of anaerobic condition dry weight, and the quality that vitamin B12 is added is anaerobic condition dry weight
1%；Micron Zero-valent Iron is injected into contaminated site region of interest within b (aqueous layer depth 10-16m, area using Geoprobe equipment
Domain area 100m2, initial 1,2- dichloroethanes concentration are 2281mg/L), it is dry for anaerobic condition that micron zeroth order weight of iron is added
The 0.8% of weight；
(4) to schedule interval acquisition place target area a, b in groundwater sample, with gas chromatographic analysis its
The changes of contents of middle target contaminant and the removal rate for calculating target contaminant in water-outlet body.The result shows that after reaction 150 days,
Pollutant 1 in a of target area, the degradation rate of 2- dichloroethanes can reach 99% or more, and contaminant degradation rate can in the b of target area
Reach 67%, micron Zero-valent Iron/vitamin B12 remediation efficiency can be improved 30% or more compared with micron Zero-valent Iron remediation efficiency, such as Fig. 5
It is shown.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of method for repairing chloro-carbon solvent polluted underground water, which is characterized in that entered using add in-place pressure injection or dystopy
The mode being added after extraction adds micron Zero-valent Iron and vitamin B12 in chloro-carbon solvent polluted underground water, utilizes micron
Some catalytic effects that Zero-valent Iron is formed under vitamin B12 catalytic action carry out dechlorination to chloro-carbon solvent.
2. the method as described in claim 1, which is characterized in that the Zero-valent Iron is commercially available reduced iron powder, the vitamin B12
For delicatessen food grade vitamin B12, the content range of vitamin B12 is 1%~99%.
3. the method as described in claim 1, which is characterized in that the additive amount of the micron Zero-valent Iron is organic in reaction system
10~300 times of chlorine molal quantity；
Entered using add in-place pressure injection, the dosage of the vitamin B12 is the 0.5%~3% of anaerobic condition dry weight；Using different
The mode being added after the extraction of position, the dosage of the vitamin B12 are dispose polluted-water quality 0.5%~3%.
4. the method as described in claim 1, which is characterized in that the method for in-situ immobilization chloro-carbon solvent polluted underground water
Are as follows:
By the mixed solution of micron Zero-valent Iron and vitamin B12 using injection device pressurization injection water table Polluted area.
5. method as claimed in claim 4, which is characterized in that the specific reality of in-situ immobilization chloro-carbon solvent polluted underground water
Apply step are as follows:
Step 1 passes through and collects place data and on-site land survey, investigates contaminated site soil and underground water pollution situation,
Collection site soil and groundwater sample include chlorine organic solvent pollution situation to place and carry out entry evaluation；
Step 2 monitors underground in place in three mouthfuls of groundwater monitoring wells of place target area construction in conjunction with contaminated sites situation
The variation of water pollutant concentration；
Micron Zero-valent Iron/vitamin B12 medicament is injected into contaminated site region of interest within using injection device pressurization by step 3；
Step 4, the to schedule groundwater sample in interval acquisition place target area, analysis wherein target contaminant
Changes of contents and corresponding physical and chemical parameter, and medicament after-teeming is suitably carried out in conjunction with monitoring result.
6. the method as described in claim 1, which is characterized in that the method for showering chloro-carbon solvent underground water are as follows:
After the extraction of chloro-carbon solvent polluted underground water, the micron Zero-valent Iron and vitamin B12 are added in water body, and will
Above-mentioned system, which is placed in closed stirring container under room temperature, is reacted.
7. method as claimed in claim 6, which is characterized in that the speed of agitator of the closed stirring container is 10~100r/
min。
8. the method as described in claim 1, which is characterized in that content of organic chloride range is 5~2500mg/L in body of groundwater.
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| CN201910823550.6A CN110526377A (en) | 2019-09-02 | 2019-09-02 | A method of repairing chloro-carbon solvent polluted underground water |
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| CN201910823550.6A CN110526377A (en) | 2019-09-02 | 2019-09-02 | A method of repairing chloro-carbon solvent polluted underground water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114146709A (en) * | 2021-12-17 | 2022-03-08 | 南京大学 | Iron/polydopamine/carbon composite catalyst with reduction and oxidation dual performance and preparation method and application thereof |
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| CN114146709A (en) * | 2021-12-17 | 2022-03-08 | 南京大学 | Iron/polydopamine/carbon composite catalyst with reduction and oxidation dual performance and preparation method and application thereof |
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