CN204737749U - Volatile organic compounds pollutes normal position prosthetic devices of groundwater - Google Patents
Volatile organic compounds pollutes normal position prosthetic devices of groundwater Download PDFInfo
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- CN204737749U CN204737749U CN201520439888.9U CN201520439888U CN204737749U CN 204737749 U CN204737749 U CN 204737749U CN 201520439888 U CN201520439888 U CN 201520439888U CN 204737749 U CN204737749 U CN 204737749U
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Abstract
The utility model discloses a volatile organic compounds pollutes normal position prosthetic devices of groundwater. It includes vacuum extraction and gas -liquid separation system, effluent disposal system to and three major parts of waste gas treatment system, extract in the vacuum and the gas -liquid separation system includes diphase extraction well, extracts burette, centrifugal deareator and claw formula vacuum pump, effluent disposal system includes that diaphragm pump, waste water blow tuo ta and centrifugal blower, waste gas treatment system includes air cooled condenser, active carbon adsorption jar and aiutage, extract the installation height -adjustable festival of burette, the device moves the in -process, and the bottom height groundwater level regional with the pollution that extracts the burette keeps unanimous. The utility model discloses a device is supporting set up effluent disposal system and waste gas treatment system handle extract receive pollution groundwater and soil gas, controlling means that can be fine moves the secondary pollution of process.
Description
Technical field
The utility model belongs to polluted underground water recovery technique field, relates to a kind of in-situ repairing device of underground water polluted by volatile organic compound.
Background technology
Along with Urbanization in China is accelerated, urban construction land needed also gets more and more, a large amount of industrial pollution place will be displaced in city, wherein volatile organic matter (VOCs) occupies larger proportion, the contaminated site containing VOCs that part has been deposited, idle, in the process excavated and dispose, the obnoxious flavour volatilized can cause serious harm to surrounding population and field personnel, after volatile organic matter enters underground environment in addition, main is that carrier spreads with underground water, formed and dissolve mutually or solvent phase (Non-aqueous phase liquid, NAPL) groundwater pollution plumage, cause in a big way, long-term, the pollution continued.Therefore, the Control and treatment research carrying out place volatile contaminant has significant social effect and Significance for Environment.
The recovery technique that in underground water, volatile organic matter pollutes can be divided into two large class, showering and in-situ immobilization.Showering technology comprises the excavation method of the pollution soil body, extracts a treatment process.Based technique for in-situ remediation comprises two-phase extraction process, in-situ heat desorption method, permeable coefficient tensor method and in situ chemical oxidation method etc.Wherein two-phase extraction process (Dual-phase Extraction, DPE) refer to and extract gaseous phase of soil and this two types pollution medium of underground water out simultaneously, to a kind of technology that contaminated site processes, be equivalent to the combination of soil vapor extraction (SVE) and underground water Pump-and-Treat technology, in system, vacuum strengthens the flowing that part can accelerate underground water, not only gaseous phase of soil can be purified, groundwater remediation can also be facilitated, can be used for the pollutent simultaneously processing saturation region and non-saturated region, namely process residual simultaneously, volatilization state, the pollutent of free state and solubilised state.Compared with traditional Pump-and-Treat technology, this technology can increase the radius of influence (radius of influence, ROI) that individual well is repaired, and improves the remediation efficiency of underground water.
But in the application process of this technology, need to carry out secondary treatment to extracting to the Polluted Groundwater on earth's surface and soil gas respectively, easily cause secondary pollution if deal with improperly, Health hazard is produced to periphery acceptor.Therefore need waste water and exhaust gas treatment technology and heterogeneous extraction technique to combine, form the underground water polluted by volatile organic compound prosthetic device of complete set, properly settle the secondary pollution problem of waste water and gas while to groundwater remediation.
Utility model content
The purpose of this utility model is, overcomes the deficiencies in the prior art, provides a kind of in-situ repairing device of underground water polluted by volatile organic compound.This covering device can be applicable to the in-situ immobilization of volatile organic matter contaminated site underground water, subsurface contaminated underground water and soil gas are drawn to ground by vacuum extraction effect to carry out respectively processing rear discharge simultaneously, thus realize the reparation of polluted underground water and the secondary pollution of effectively control device operation.
The purpose of this utility model is achieved by the following technical solution:
An in-situ repairing device for underground water polluted by volatile organic compound, it comprises vacuum extraction and Separate System of Water-jet, Waste Water Treatment, and flare system three parts; Vacuum extraction and Separate System of Water-jet comprise two-phase extraction well (2), extracting dropper (3), centrifugal air water separator (4) and claw vacuum pump (5); Waste Water Treatment comprises surge pump (6), waste water blowoff tower (7) and centrifugal blower (8); Flare system comprises air cooled condenser (9), absorbent charcoal adsorption tank (10) and aiutage (11);
Two-phase extraction well (2) upper and lower end seals, and the stage casing of two-phase extraction well (2) is the screen casing (1) that liquid and/or gas can be made to enter; Extracting dropper (3) bottom is inserted in two-phase extraction well (2); Extracting dropper (3) top is connected with centrifugal air water separator (4) entrance; Claw vacuum pump (5) entrance exports with centrifugal air water separator (4) upper gas and is connected; Surge pump (6) entrance is connected with centrifugal air water separator (4) lower liquid outlet, surge pump (6) outlet is connected with the upper entrance of waste water blowoff tower (7), and centrifugal blower (8) outlet is connected with the lower entrances of waste water blowoff tower (7); Claw vacuum pump (5) outlet pipe and waste water blowoff tower (7) top gas vent pipe merge afterwards and air cooled condenser (9), absorbent charcoal adsorption tank (10) are linked in sequence, and aiutage (11) is positioned at absorbent charcoal adsorption tank (10) top.
The depth of penetration of extracting dropper (3) in two-phase extraction well (2) is adjustable, in plant running process, the bottom height of extracting dropper and the groundwater level of Polluted area are consistent, by regulating the height of extracting dropper bottom in two-phase extraction well can Control pollution local ground watering water level, to reach the object regulating pollution amelioration scope.
The in-situ repairing device of underground water polluted by volatile organic compound of the present utility model can be applicable to the in-situ immobilization of volatile organic matter contaminated site underground water.
The beneficial effects of the utility model:
Compared with prior art, tool has the following advantages the utility model:
(1) subsurface contaminated underground water and soil gas are extracted out by the extracting dropper be arranged in two-phase extraction well, in plant running process, the bottom height of extracting dropper and the groundwater level of Polluted area are consistent, the actual groundwater level in Control pollution region can be carried out by the height of adjustment extracting dropper bottom in two-phase extraction well in plant running process, thus the convenient adjustment of extracting operating mode can be realized.
(2) matched with devices is provided with Waste Water Treatment and flare system processes the Polluted Groundwater and soil gas that extract, can be good at the secondary pollution of control device operational process.
(3) Polluted Groundwater that device extracts adopts stripping process process volatile organic matter pollutant effluents to fine treatment effect, and waste water blowoff tower runs the waste gas produced and can be combined by flare system process with the polluted soil gas extracted, equipment of having saved takes up an area and investment.
(4) the system tail gas that extracts of device to adopt after condensation pre-treatment again by gac repair process, can greatly improve flare system processing efficiency and save the use of gac, accomplishing energy-saving and emission-reduction.
(5) claw vacuum pump is adopted, not only corrosion-resistant, pure tail gas recycle can be realized, and also energy-saving and cost-reducing, improve the stability that equipment runs.
Accompanying drawing explanation
Fig. 1 is the structural representation of the in-situ repairing device of a kind of underground water polluted by volatile organic compound of the utility model.
In figure: 1, screen casing; 2, two-phase extraction well; 3, extracting dropper; 4, centrifugal air water separator; 5, claw vacuum pump; 6, surge pump; 7, waste water blowoff tower; 8, centrifugal blower; 9, air cooled condenser; 10, activated carbon adsorption tank; 11, aiutage A, initial ground water table B, stablize ground water table.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Embodiment 1
As shown in Figure 1, the in-situ repairing device of a kind of underground water polluted by volatile organic compound of the utility model, it comprises vacuum extraction and Separate System of Water-jet, Waste Water Treatment, and flare system three parts; Vacuum extraction and Separate System of Water-jet comprise two-phase extraction well 2, extracting dropper 3, centrifugal air water separator 4 and claw vacuum pump 5; Waste Water Treatment comprises surge pump 6, waste water blowoff tower 7 and centrifugal blower 8; Flare system comprises air cooled condenser 9, absorbent charcoal adsorption tank 10 and aiutage 11;
Two-phase extraction well 2 upper and lower end seals, and the stage casing of two-phase extraction well 2 is the screen casings 1 that liquid and/or gas can be made to enter; Extracting dropper 3 bottom is inserted in two-phase extraction well 2; Extracting dropper 3 top is connected with centrifugal air water separator 4 entrance; Claw vacuum pump 5 entrance exports with centrifugal air water separator 4 upper gas and is connected; Surge pump 6 entrance is connected with centrifugal air water separator 4 lower liquid outlet, and surge pump 6 outlet is connected with the upper entrance of waste water blowoff tower 7, and centrifugal blower 8 outlet is connected with the lower entrances of waste water blowoff tower 7; Claw vacuum pump 5 outlet pipe and waste water blowoff tower 7 top gas vent pipe merge afterwards and air cooled condenser 9, absorbent charcoal adsorption tank 10 are linked in sequence, and aiutage 11 is positioned at absorbent charcoal adsorption tank 10 top.
The depth of penetration of extracting dropper 3 in two-phase extraction well 2 is adjustable, and in plant running process, the bottom altitude mixture control of extracting dropper is to being consistent with the groundwater level of Polluted area.The actual groundwater level in Control pollution region can be carried out by the height of adjustment extracting dropper bottom in two-phase extraction well, to reach the object regulating pollution amelioration scope in plant running process.
Subsurface contaminated underground water, first under the suction function of claw vacuum pump 5 generation, is drawn to more than ground by two-phase extraction well 2 and the extracting dropper 3 be arranged in well and enters centrifugal gas-liquid separator 4.Groundwater level in two-phase extraction well 2 is be positioned at initial ground water table A place when just starting, along with the carrying out of vacuum extraction, groundwater level in two-phase extraction well 2 constantly declines, when namely the water level decreasing in two-phase extraction well stablizes ground water table B place to the bottom of extracting dropper 3 with upper/lower positions, under the screen casing at the above position of this water level is just directly exposed to the effect of vacuum tightness, at this moment two-phase extraction well 2 peripheral part zone of saturation soil is just converted to unsaturated zone soil, polluted soil gas in unsaturated zone soil is just drawn to more than ground by two-phase extraction well 2 and extracting dropper 3 from underground and enters centrifugal gas-liquid separator 4.Along with the alimentation of two-phase extraction well 2 surrounding underground water, Polluted Groundwater also constantly can be entered in two-phase extraction well 2 simultaneously and be extracted out by extracting dropper 3, thus under defining the suction function that subsurface contaminated underground water and soil gas produce at claw vacuum pump 5, be drawn to more than ground in the lump by two-phase extraction well 2 and the extracting dropper 3 be arranged in well and enter the operation condition that centrifugal gas-liquid separator 4 carries out gas-liquid separation.
The isolated Polluted Groundwater of centrifugal gas-liquid separator 4 is by overcoming vacuum action and the surge pump 6 realizing discharge opeing is pumped into waste water blowoff tower 7 carries out stripping process, be transferred to gas phase by liquid phase under the new wind action that volatile organic contaminant in waste water is sent constantly at centrifugal blower 8 to discharge, the discharged wastewater met the national standard after process.Enter flare system together with the waste gas that the isolated high-concentration waste gas of centrifugal gas-liquid separator 4 and waste water blowoff tower 7 are discharged, reduce in waste gas finally entering absorbent charcoal adsorption tank 10 adsorption treatment after organic contamination substrate concentration and by aiutage 11 qualified discharge through air cooled condenser 9 condensation process.Containing the organic pollutant of high density in the phlegma that air cooled condenser 9 condensation produces, after isolating, need to entrust as Hazardous wastes have qualification unit to dispose.
Embodiment 2
The in-situ repairing device of underground water polluted by volatile organic compound described in embodiment 1 is as follows in the field application test situation of certain hydrochloric ether contaminated site:
Certain hydrochloric ether contaminated site exists 1 in the sandy silt layer of 6-9 rice, underground, the free phase liquid of 1,1-trichloroethane, has installed the two-phase extraction well 2 that three mouthfuls of diameters are 4 inches in this place, screen casing 1 fitting depth of two-phase extraction well is subsurface 6 meters to 9 meters, i.e. free phase domain of the existence.The negative pressure (-0.06Mpa ~-0.08Mpa) utilizing claw vacuum pump 5 to produce is by 1,1, dusty gas in the free phase of 1-trichloroethane, contaminated underground water and soil pores is extracted out together, enter centrifugal gas-liquid separator 4 through extracting dropper 3 and carry out gas-liquid separation, isolated Polluted Groundwater is pumped into waste water blowoff tower 7 by surge pump 6 and carries out stripping process, total chlorinated hydrocarbon volatile contaminant in waste water is transferred to gas phase by liquid phase and namely becomes waste gas discharge, the discharged wastewater met the national standard after process under the effect of centrifugal blower 8.Enter flare system together with the waste gas that the isolated tail gas of centrifugal gas-liquid separator 4 and waste water blowoff tower 7 are discharged, after air cooled condenser 9 condensation process, finally enter absorbent charcoal adsorption tank 10 adsorption treatment and by aiutage 11 qualified discharge.Total fluid extraction flow is about 1 ~ 1.5m
3/ h, total gas extracting flow is about 20 ~ 30m
3/ h.Through the extracting of 3 months, this system extracted total fluid and the about 3000m of about 1300L altogether out
3soil gas, amount to and remove total hydrochloric ether and be about 40kg, the hydrochloric ether amount wherein removed with gas phase is maximum, accounts for 85% of total removal amount.
Claims (2)
1. an in-situ repairing device for underground water polluted by volatile organic compound, is characterized in that,
It comprises vacuum extraction and Separate System of Water-jet, Waste Water Treatment, and flare system three parts; Vacuum extraction and Separate System of Water-jet comprise two-phase extraction well (2), extracting dropper (3), centrifugal air water separator (4) and claw vacuum pump (5); Waste Water Treatment comprises surge pump (6), waste water blowoff tower (7) and centrifugal blower (8); Flare system comprises air cooled condenser (9), absorbent charcoal adsorption tank (10) and aiutage (11);
Two-phase extraction well (2) upper and lower end seals, and the stage casing of two-phase extraction well (2) is the screen casing (1) that liquid and/or gas can be made to enter; Extracting dropper (3) bottom is inserted in two-phase extraction well (2); Extracting dropper (3) top is connected with centrifugal air water separator (4) entrance; Claw vacuum pump (5) entrance exports with centrifugal air water separator (4) upper gas and is connected; Surge pump (6) entrance is connected with centrifugal air water separator (4) lower liquid outlet, surge pump (6) outlet is connected with the upper entrance of waste water blowoff tower (7), and centrifugal blower (8) outlet is connected with the lower entrances of waste water blowoff tower (7); Claw vacuum pump (5) outlet pipe and waste water blowoff tower (7) top gas vent pipe merge afterwards and air cooled condenser (9), absorbent charcoal adsorption tank (10) are linked in sequence, and aiutage (11) is positioned at absorbent charcoal adsorption tank (10) top.
2. the in-situ repairing device of underground water polluted by volatile organic compound as claimed in claim 1, it is characterized in that, the depth of penetration of extracting dropper (3) in two-phase extraction well (2) is adjustable, and the bottom height of extracting dropper and the groundwater level of Polluted area are consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520439888.9U CN204737749U (en) | 2015-06-24 | 2015-06-24 | Volatile organic compounds pollutes normal position prosthetic devices of groundwater |
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|---|---|---|---|
| CN201520439888.9U CN204737749U (en) | 2015-06-24 | 2015-06-24 | Volatile organic compounds pollutes normal position prosthetic devices of groundwater |
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| CN204737749U true CN204737749U (en) | 2015-11-04 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944467A (en) * | 2017-05-03 | 2017-07-14 | 上海格林曼环境技术有限公司 | A kind of combined type multiphase extraction system and its method for extracting |
| CN106944466A (en) * | 2017-03-28 | 2017-07-14 | 湖南艾布鲁环保科技有限公司 | A kind of stripping of Organic Pollution place soil and biodegradable combined remediation method |
| CN107857415A (en) * | 2017-12-13 | 2018-03-30 | 长沙汇聚环境技术有限公司 | A kind of underground water volatile organic matter pollution amelioration method and device |
| CN109675920A (en) * | 2018-12-04 | 2019-04-26 | 北京高能时代环境技术股份有限公司 | Device and method for contaminated soil thermal desorption |
| CN111299311A (en) * | 2020-03-26 | 2020-06-19 | 杰瑞环保科技有限公司 | Multiphase extraction coupling recharge processing system |
| CN111468526A (en) * | 2020-04-17 | 2020-07-31 | 南京伯克利环境修复有限公司 | Soil and underground water remediation system combining multiphase extraction and biological methods |
| CN111744943A (en) * | 2020-06-18 | 2020-10-09 | 湖南恒凯环保科技投资有限公司 | Large-diameter medicament injection well and in-situ remediation equipment and process for organic matter polluted groundwater |
| CN111908633A (en) * | 2019-05-10 | 2020-11-10 | 中国石油天然气集团有限公司 | Petroleum hydrocarbon polluted underground water treatment process |
| CN113414234A (en) * | 2021-06-21 | 2021-09-21 | 上海格林曼环境技术有限公司 | Method for remediating soil and underground water pollution by using in-situ low-consumption combined relay remediation device |
| CN115889434A (en) * | 2023-02-20 | 2023-04-04 | 宝航环境修复有限公司 | Multiple extraction system and method for volatile organic polluted soil underground water |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944466A (en) * | 2017-03-28 | 2017-07-14 | 湖南艾布鲁环保科技有限公司 | A kind of stripping of Organic Pollution place soil and biodegradable combined remediation method |
| CN106944466B (en) * | 2017-03-28 | 2019-02-12 | 湖南艾布鲁环保科技股份有限公司 | A kind of stripping of organic pollution place soil and biodegradable combined remediation method |
| CN106944467A (en) * | 2017-05-03 | 2017-07-14 | 上海格林曼环境技术有限公司 | A kind of combined type multiphase extraction system and its method for extracting |
| CN107857415A (en) * | 2017-12-13 | 2018-03-30 | 长沙汇聚环境技术有限公司 | A kind of underground water volatile organic matter pollution amelioration method and device |
| CN109675920A (en) * | 2018-12-04 | 2019-04-26 | 北京高能时代环境技术股份有限公司 | Device and method for contaminated soil thermal desorption |
| CN111908633A (en) * | 2019-05-10 | 2020-11-10 | 中国石油天然气集团有限公司 | Petroleum hydrocarbon polluted underground water treatment process |
| CN111299311A (en) * | 2020-03-26 | 2020-06-19 | 杰瑞环保科技有限公司 | Multiphase extraction coupling recharge processing system |
| CN111468526A (en) * | 2020-04-17 | 2020-07-31 | 南京伯克利环境修复有限公司 | Soil and underground water remediation system combining multiphase extraction and biological methods |
| CN111468526B (en) * | 2020-04-17 | 2024-04-26 | 南京伯克利环境修复有限公司 | Soil and groundwater remediation system combining multiphase extraction and biological method |
| CN111744943A (en) * | 2020-06-18 | 2020-10-09 | 湖南恒凯环保科技投资有限公司 | Large-diameter medicament injection well and in-situ remediation equipment and process for organic matter polluted groundwater |
| CN111744943B (en) * | 2020-06-18 | 2021-09-10 | 湖南恒凯环保科技投资有限公司 | Large-diameter medicament injection well and in-situ remediation equipment and process for organic matter polluted groundwater |
| CN113414234A (en) * | 2021-06-21 | 2021-09-21 | 上海格林曼环境技术有限公司 | Method for remediating soil and underground water pollution by using in-situ low-consumption combined relay remediation device |
| CN115889434A (en) * | 2023-02-20 | 2023-04-04 | 宝航环境修复有限公司 | Multiple extraction system and method for volatile organic polluted soil underground water |
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