CN104874592A - In situ multi-phase extraction system for contaminated soil - Google Patents
In situ multi-phase extraction system for contaminated soil Download PDFInfo
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- CN104874592A CN104874592A CN201510116797.6A CN201510116797A CN104874592A CN 104874592 A CN104874592 A CN 104874592A CN 201510116797 A CN201510116797 A CN 201510116797A CN 104874592 A CN104874592 A CN 104874592A
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Abstract
The invention relates to an in situ multi-phase extraction system for contaminated soil. The system comprises multiple extraction wells. A water-gas dual-purpose pump for drawing-off gases and liquids in the wells is arranged above the extraction wells through corresponding pipelines. The water-gas dual-purpose pump is communicated with a gas-water separator through a corresponding pipeline. A gas-phase outlet of the gas-water separator is communicated with a suction port of a vacuum pump through a pipeline. An outlet of the vacuum pump is communicated with an entrance of a gas processing unit through a pipeline. An exit of the gas processing unit is communicated with the outside atmosphere. A liquid-phase outlet of the gas-water separator is communicated with an inlet of an oil-water separator through a pipeline. A non-water soluble pollutant outlet of the oil-water separator is communicated to a high-risk waste collection device. An outlet of the oil-water separator is communicated with a sewage treatment station through a sewage pump. By the technical scheme, organic pollutants in soil and underground water can be controlled and the soil and underground water can be repaired, and the system has a short repair cycle, is low-cost and is convenient to maintain.
Description
Technical field
The present invention relates to field of environment engineering, be specifically related to the heterogeneous extraction system of a kind of contaminated soil original position.
Background technology
Volatile dusty gas and runny nonaqueous phase contaminated liquid are called NAPL, as gasoline, diesel oil, organic solvent etc.; What density was less than water is called LNAPL(Light NAPL), also referred to as light oil, be generally oil product, as diesel oil, benzene, dimethylbenzene etc.; What density was greater than water is called DNAPL(Density LNAPL), also become heavy oil, be generally halogen-containing organic solvent (as PCE, PCB) and agricultural chemicals (DDT), also have coking product, as coal tar.
The present invention, by vacuum extraction means, extracts the soil gas in underground pollution region, underground water and oil slick layer and carries out to ground being separated and processing, to control and the organic pollution in rehabilitating soil and underground water.
Heterogeneous extracting refers to the gas and liquid (comprising soil gas, underground water and NAPL) that extract Polluted area simultaneously, and gaseous state, water-soluble state and water-insoluble fluid contaminants are drawn into ground treatment system from underground.Multi-phase separation refers to the solution-air and Oil-water separation process of carry out extract.
Summary of the invention
The object of the invention is to overcome prior art Problems existing, provide a kind of contaminated soil original position heterogeneous extraction system.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
The heterogeneous extraction system of a kind of contaminated soil original position, this system includes multiple extraction well, above described extraction well, corresponding pipeline is provided with the water and gas dual-purpose pump for extracting gas-liquid in well, described water and gas dual-purpose pump is communicated with gas and water separator by corresponding pipeline, the gaseous phase outlet of described gas and water separator passes through the suction inlet of pipeline communication vavuum pump, described vacuum delivery side of pump is by the entrance of pipeline communication gas treatment equipment, the outlet ambient atmosphere of described gas treatment equipment, the liquid-phase outlet of described gas and water separator passes through the entrance of pipeline communication oily-water seperating equipment, in the high-risk rubbish collecting device of water-insoluble pollutant outlet of described oily-water seperating equipment, the outlet of described oily-water seperating equipment is communicated with Sewage Disposal by sewage pump.
Further, the pipeline between described extraction well and water and gas dual-purpose pump is provided with vacuum meter and flowmeter.
Further, described oily-water seperating equipment removes oil slick layer by gravitational settling mode, isolates the water that oil content is low.
Further, this system also comprise for actuating station each in control system PLC control appliance and be arranged in extraction well the monitoring equipment of WATER LEVEL CHANGES parameter near the underground water drawdown of monitoring in its vacuum, well, extracting underground water volume, single well flow, inlet flow rate and well.
The invention has the beneficial effects as follows:
Adopt technical solution of the present invention, can control and the organic pollution in rehabilitating soil and underground water, and repairing efficiency is short, generally need the time of 1-24 month, its processing cost is relevant to the factor such as pollutant levels and project scale, and concrete cost comprises the expenditures such as construction investment, equipment investment, operational and administrative expenses.According to domestic pilot scale plant case, often process the cost about 385 yuan of 1 kilogram of NAPL, very low, need at run duration, by the physics of the sustainable monitoring of monitoring system and the mechanical parameter (vacuum in extraction well and monitor well in running, underground water drawdown in extraction well, extracting underground water volume, single well flow, fan inlet flow, WATER LEVEL CHANGES etc. near extraction well), chemical index (gas phase pollution substrate concentration, gas/water outlet pollutant levels, extracting underground water pollution substrate concentration, NAPL composition change etc.), and biological index of correlation (dissolved gas, nitrogen and phosphorus concentration, BOD, pH value, oxidation-reduction potential, micro organism quantity etc.).
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Number in the figure illustrates: 1, extraction well, 2, water and gas dual-purpose pump, 3, gas and water separator, 4, vavuum pump, 5, gas treatment equipment, 6, oily-water seperating equipment, 7, high-risk rubbish collecting device, 8, sewage pump, 9, Sewage Disposal, 10, vacuum meter, 11, flowmeter.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
With reference to shown in Fig. 1, the heterogeneous extraction system of a kind of contaminated soil original position, this system includes multiple extraction well 1, above described extraction well 1, corresponding pipeline is provided with the water and gas dual-purpose pump 2 for extracting gas-liquid in well, described water and gas dual-purpose pump 2 is communicated with gas and water separator 3 by corresponding pipeline, the gaseous phase outlet of described gas and water separator 3 passes through the suction inlet of pipeline communication vavuum pump 4, the outlet of described vavuum pump 4 is by the entrance of pipeline communication gas treatment equipment 5, the outlet ambient atmosphere of described gas treatment equipment 5, the liquid-phase outlet of described gas and water separator 3 passes through the entrance of pipeline communication oily-water seperating equipment 6, in the high-risk rubbish collecting device 7 of water-insoluble pollutant outlet of described oily-water seperating equipment 6, the outlet of described oily-water seperating equipment 6 is communicated with Sewage Disposal 9 by sewage pump 8.
Pipeline between described extraction well 1 and water and gas dual-purpose pump 2 is provided with vacuum meter 10 and flowmeter 11.
Described oily-water seperating equipment 6 removes oil slick layer by gravitational settling mode, isolates the water that oil content is low.
This system also comprises for the PLC control appliance of actuating station each in control system and the monitoring equipment of WATER LEVEL CHANGES parameter near being arranged in extraction well 1 in its vacuum of monitoring, well underground water drawdown, extracting underground water volume, single well flow, inlet flow rate and well.
Processing procedure is as follows in the present embodiment: (1). first, set up groundwater extraction well 1, well and well spacing should within the scope of the waterpower radiuses of influence, first NAPL in extraction well 1 and contaminated underground water can be drawn out of ground by pump, can be drawn out of along with underground water enters in extraction well together to the supply of well at the NAPL of extraction well 1 near zone, the place existed for there being DNAPL, the degree of depth of extraction well 1 should reach water barrier top.
(2). keep the seal that whole extraction line is good, comprise well head, pipeline, interface etc., after extracting starts, according to flowmeter 11 observed volume, and regulate vacuum and extraction tube position according to vacuum meter 10 registration, make system stable operation.
(3). in gas and water separator 3, carried out gas-water separation by water and gas dual-purpose pump 2 is extracted out soil gas, underground water and NAPL, isolated gas phase portion enters gas disposal device 5 by vavuum pump 4, and isolated liquid phase part then enters in oily-water seperating equipment 6.
(4). liquid phase is by Gravity Separation in oily-water seperating equipment 6, and the upper strata LNAPL obtained and lower floor's DNAPL pollutant are as dangerous waste disposal, and contaminated underground water then delivers to qualified discharge after on-the-spot Sewage Disposal process by sewage pump.
In the above-described embodiments, (1) extraction well adopts UPVC material, and hole diameter 25mm, well depth 3.5m, the radius of influence is about 6.0m, and wherein screen casing is positioned at the position of underground 1m to underground 3m.(2) heterogeneous extracting pilot test system operation with single extraction well one by one extracting mode in turn carry out, altogether run 25 days.(3) extraction times of single extraction well every day is in 0.5 hour, the accumulation extraction times of 25 days about 8 hours altogether.(4) during extracting, system vacuum controls at-0.065 MPa, and extraction well well head vacuum degree control is at-0.03MPa, and average gas extracting flow is 80-100 liter/min (L/min).
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. the heterogeneous extraction system of contaminated soil original position, it is characterized in that, this system includes multiple extraction well (1), described extraction well (1) top is provided with the water and gas dual-purpose pump (2) for extracting gas-liquid in well by corresponding pipeline, described water and gas dual-purpose pump (2) is communicated with gas and water separator (3) by corresponding pipeline, the gaseous phase outlet of described gas and water separator (3) passes through the suction inlet of pipeline communication vavuum pump (4), the outlet of described vavuum pump (4) is by the entrance of pipeline communication gas treatment equipment (5), the outlet ambient atmosphere of described gas treatment equipment (5), the liquid-phase outlet of described gas and water separator (3) passes through the entrance of pipeline communication oily-water seperating equipment (6), in the high-risk rubbish collecting device of the water-insoluble pollutant outlet (7) of described oily-water seperating equipment (6), the outlet of described oily-water seperating equipment (6) is communicated with Sewage Disposal (9) by sewage pump (8).
2. the heterogeneous extraction system of contaminated soil original position according to claim 1, is characterized in that, the pipeline between described extraction well (1) and water and gas dual-purpose pump (2) is provided with vacuum meter (10) and flowmeter (11).
3. the heterogeneous extraction system of contaminated soil original position according to claim 1, is characterized in that, described oily-water seperating equipment (6) removes oil slick layer by gravitational settling mode, isolates the water that oil content is low.
4. the heterogeneous extraction system of contaminated soil original position according to claim 1, it is characterized in that, this system also comprises for the PLC control appliance of actuating station each in control system and the monitoring equipment of WATER LEVEL CHANGES parameter near being arranged in extraction well (1) in its vacuum of monitoring, well underground water drawdown, extracting underground water volume, single well flow, inlet flow rate and well.
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| CN201510116797.6A CN104874592B (en) | 2015-03-18 | 2015-03-18 | A kind of contaminated soil original position multiphase extraction system |
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| CN201510116797.6A CN104874592B (en) | 2015-03-18 | 2015-03-18 | A kind of contaminated soil original position multiphase extraction system |
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Cited By (7)
| 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 |
| CN107552549A (en) * | 2017-08-29 | 2018-01-09 | 武汉都市环保工程技术股份有限公司 | A kind of bio- ventilation strengthens multiphase extraction system in situ |
| CN107639104A (en) * | 2016-07-22 | 2018-01-30 | 罗伯特·丹尼尔·斯拉贝 | Multiphase soil vapor extraction device |
| CN108273836A (en) * | 2017-12-28 | 2018-07-13 | 江苏盖亚环境科技股份有限公司 | A kind of microorganism extracts joint soil and groundwater in-situ remediation system with gas phase |
| CN109738242A (en) * | 2019-01-11 | 2019-05-10 | 成都市环境保护科学研究院 | Volatile organic contaminant acquisition device in soil |
| CN110066919A (en) * | 2019-04-25 | 2019-07-30 | 中国地质科学院矿产综合利用研究所 | Vacuum extraction device and method for ionic rare earth mining |
| CN111570492A (en) * | 2020-05-14 | 2020-08-25 | 上海市政工程设计研究总院（集团）有限公司 | Intelligent multi-phase extraction repair system based on process monitoring and control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09174033A (en) * | 1995-12-27 | 1997-07-08 | Hitachi Plant Eng & Constr Co Ltd | Vacuum extraction and purification of soil |
| CN102974600A (en) * | 2012-11-10 | 2013-03-20 | 华北电力大学 | Periodic-dosing oil-gas-liquid three-phase extraction device and method thereof for repairing petroleum-contaminated soil |
| CN203235746U (en) * | 2013-03-07 | 2013-10-16 | 中国石油天然气集团公司 | In-situ remediation device for unsaturated zone soil with light oil pollution |
| CN204182671U (en) * | 2014-10-24 | 2015-03-04 | 武汉绿之地环保节能科技有限公司 | For the heterogeneous extracting prosthetic device of single pump hydrocone type that contaminated site is repaired |
| CN204620625U (en) * | 2015-03-18 | 2015-09-09 | 江苏盖亚环境工程有限公司 | The heterogeneous extraction system of a kind of contaminated soil original position |
-
2015
- 2015-03-18 CN CN201510116797.6A patent/CN104874592B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09174033A (en) * | 1995-12-27 | 1997-07-08 | Hitachi Plant Eng & Constr Co Ltd | Vacuum extraction and purification of soil |
| CN102974600A (en) * | 2012-11-10 | 2013-03-20 | 华北电力大学 | Periodic-dosing oil-gas-liquid three-phase extraction device and method thereof for repairing petroleum-contaminated soil |
| CN203235746U (en) * | 2013-03-07 | 2013-10-16 | 中国石油天然气集团公司 | In-situ remediation device for unsaturated zone soil with light oil pollution |
| CN204182671U (en) * | 2014-10-24 | 2015-03-04 | 武汉绿之地环保节能科技有限公司 | For the heterogeneous extracting prosthetic device of single pump hydrocone type that contaminated site is repaired |
| CN204620625U (en) * | 2015-03-18 | 2015-09-09 | 江苏盖亚环境工程有限公司 | The heterogeneous extraction system of a kind of contaminated soil original position |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107639104A (en) * | 2016-07-22 | 2018-01-30 | 罗伯特·丹尼尔·斯拉贝 | Multiphase soil vapor extraction device |
| 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 |
| CN107552549A (en) * | 2017-08-29 | 2018-01-09 | 武汉都市环保工程技术股份有限公司 | A kind of bio- ventilation strengthens multiphase extraction system in situ |
| CN108273836A (en) * | 2017-12-28 | 2018-07-13 | 江苏盖亚环境科技股份有限公司 | A kind of microorganism extracts joint soil and groundwater in-situ remediation system with gas phase |
| CN109738242A (en) * | 2019-01-11 | 2019-05-10 | 成都市环境保护科学研究院 | Volatile organic contaminant acquisition device in soil |
| CN110066919A (en) * | 2019-04-25 | 2019-07-30 | 中国地质科学院矿产综合利用研究所 | Vacuum extraction device and method for ionic rare earth mining |
| CN111570492A (en) * | 2020-05-14 | 2020-08-25 | 上海市政工程设计研究总院（集团）有限公司 | Intelligent multi-phase extraction repair system based on process monitoring and control method |
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| CN104874592B (en) | 2018-05-08 |
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