CN205032471U - A individual well layering is extracted and injection device for contaminated site recovering work - Google Patents
A individual well layering is extracted and injection device for contaminated site recovering work Download PDFInfo
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Abstract
The utility model relates to an individual well layering is extracted and injection device for contaminated site recovering work, including the pneumatic sealing system of extraction / injection well system, extraction / injection burette system and layering. The screen pipe of extraction / injection well system includes whole target restoration level. Extraction / injection burette system extracts or the injection headtotail with outside, and the burette position can be adjusted from top to bottom. Last lower extreme gas movable sealing ring cover in the pneumatic sealing system of layering is extracting burette triangle incision both sides, and position and interval can be adjusted. Under the vented condition, go up lower extreme gas movable sealing ring inflation and hug closely the well casing wall for upward keep the leakproofness between the lower extreme gas movable sealing ring, can carry out vacuum extraction and malleation injection to this interval. The real -time switching that can realize extracting well and injection well, through adjustment burette position and last lower extreme gas movable sealing ring's position and interval, still the level is repaired to adjustable target, overcomes the heterogeneous adverse effect of soil layer, reduces repair costs and improves remediation efficiency in addition.
Description
Technical field
The utility model technology a set ofly can be applicable to contaminated site recovery project, can realize the device of individual well layering extracting and function of injection.
Background technology
Extraction well and injector well are widely used in most contaminated site based technique for in-situ remediation, and the bio-ventilation technology in as biological prosthetic in original position soil utilizes injector well carry out ventilation oxygen supply to contaminated soil and promote aerobic degradation pollutant in soil; Soil gas extraction technique in the reparation of original position soil physical chemistry, utilizes extraction well to apply vacuum to Polluted area, orders about soil gas and carries polluter flow direction extraction well secretly, and process the most on the ground; Artificial-strengthening bioremediation technology in descending aquatic organism to repair in situ, utilizes injector well to inject air, nutriment and electron acceptor etc. to polluted underground water, strengthens the speed of microbial degradation pollutant to reach reparation object; Original position underground water physical chemistry repair in heterogeneous extraction technique, use extraction well to apply vacuum to Polluted area, simultaneously extracting soil gas and polluted underground water and non-aqueous phase liquids repair contaminated soil and groundwater; Original position underground water physical chemistry repair in chemical oxidation techniques, use injector well to add strong oxidizer in underground water, decomposed or transform the pollutant in underground water by redox reaction, the harmless compound of soil boy structure is to reach reparation object.In a word, injector well and extraction well are the majors avenues of approach of contaminants removal, are also the Main Means that external source repairs that material enters Polluted area, are widely used in various recovery technique.
There is following technology limitation in current extraction well and injector well: 1) the target repair layer position of injector well and extraction well is mainly the part that screen casing covers in all kinds of recovery technique use procedure, tradition extraction well and injector well are once determine screen casing position and length, just can not adjust after being arranged on underground, namely target repair layer position cannot adjust again; 2) in the layer position that cover of injector well and extraction well screen casing, often soil layer type differs, even the target repair layer position of identical soil layer type, also the preferential paths of macrovoid such as soil crack, root system passage and worm hole may be there is, therefore near the soil layer that in traditional extraction well and its destination layer position of injector well, infiltration coefficient is larger and preferential path, Polluted area can preferentially be repaired, Polluted area repairing effect beyond the less and preferential path of infiltration coefficient is limited, cannot repair even completely.3) some places use extraction well and injector well simultaneously, conventional injection well and extraction well are all installed according to Site characteristic parameter designing, cannot guarantee that a well meets the technical requirement of injection and extracting simultaneously, the function that individual well takes into account extracting and injection simultaneously cannot be realized.
Domestic at present still do not have to solve the extraction well of above technology limitation and the Patent Publication of injector well device.The breakthrough of above technology limitation, for saving contaminated site recovery project cost, improves remediation efficiency and has very large meaning.
Summary of the invention
The utility model technology overcome prior art cannot adjust repair destination layer position, cannot to overcome soil layer uneven and cannot realize the limitation such as real-time switching of extracting and function of injection, provide a kind of and be applied to the device that contaminated site recovery project can realize individual well layering extracting and injection.
The utility model technology is achieved through the following technical solutions:
A set ofly be applied to contaminated site recovery project, the device of individual well layering extracting and function of injection can be realized, comprise extracting/injector well system, extracting/injection dropper system and layering pneumostop system.
Described extracting/injector well system comprises lower end snap joint (not being with by order end), Bai Guan, screen casing, bottom, cement mortar, bentonite and quartz sand.Described lower end snap joint (not being with by order end) the outer silk screw thread of band, and be connected with described white pipe upper end.Described white pipe lower end is connected with screen casing upper end, and screen casing lower end is furnished with bottom.Well casing outer wall and to install between native hole space filled stone sand, bentonite and cement mortar successively from bottom to up.
Extracting/injection dropper system comprises three angle kerves of transparent high-pressure hose, ball valve, pressure vacuum meter, three hole top covers, upper end snap joint (with by order end), dropper and dropper bottom.Dropper is inserted at transparent high-pressure hose two ends, and is fixed by stainless steel anchor ear.Three hole top covers are the aperture being distributed with 3 different-diameters, are respectively the outlet of 2 compressed air hoses and 1 dropper.Three top cover bottom, holes are upper end snap joint (being with by order end), supporting with the lower end snap joint (be not with and hold by making) of extracting/injector well system, can connect fast and dismantle.Three angle kerve drift angles of dropper bottom are 120 °, and drift angle otch span is 13mm.The degree of depth that dropper inserts extracting/injector well inside is determined according to Site characteristic parameter, and top is connected to external vacuum extracting or injecting systems through after three hole top covers always.
Layering pneumostop system comprises compression gas pipe, upper end Pneumatic sealing ring and lower end Pneumatic sealing ring.Compression gas pipe and upper and lower side Pneumatic sealing ring are connect soon in succession by pneumatic.Upper and lower side Pneumatic sealing ring is all enclosed within dropper, lays respectively at the two ends up and down of dropper three angle kerve, keeps at a certain distance away, by being connected to the compression gas pipe air feed of external compression air source of the gas.Upper and lower side Pneumatic sealing ring is annular hollow structure, and the high voltage bearing silica gel material of acid and alkali-resistance, is fixed on dropper by the quick clip of the stainless steel of its upper and lower both sides, can adjusting position as required.Under inflated condition, upper and lower side Pneumatic sealing ring expands to the periphery, and outer wall is close to extracting/injector well inside pipe wall, guarantees that in extracting and injection process, sealing ring outer wall and well casing inner wall sealing are good.
Preferably, the upper and lower side Pneumatic sealing ring external diameter that unaerated state is enclosed within dropper is less than extracting/injector well internal diameter, can adjust the position of dropper in well flexibly.
Preferably, upper and lower side Pneumatic sealing ring is connected to external compression air source of the gas by compression gas pipe, can expand in the deflated condition and be close to well tubular wall, make to keep sealing between upper and lower side Pneumatic sealing ring, vacuum extraction and malleation injection can be carried out for this interval.
Three angle kerves that dropper bottom is arranged, drift angle is 120 °, and otch span is 13mm, can effectively avoid traditional flat mouth dropper in vacuum extraction process, due to the violent shaking phenomenon that level of ground water causes in incision site frequent fluctuation, make system cloud gray model more stable.
Preferably, the dropper after ball valve connects the long transparent high-pressure hose of 30cm, can Real Time Observation dropper internal flow state.
Preferably, the sieve of extracting/injector well system screen casing seam is 0.02mm, and sieve kerf spacing is 3mm, and screen casing length covers whole target repair layer position, follow-uply can adjustment aim layer position or layering inject as required.
Preferably, by adjusting the mode of dropper position and upper and lower side Pneumatic sealing ring position and interval, individual well layering extracting and injection can be realized.
During use, first the upper and lower side Pneumatic sealing ring in layering pneumostop system is arranged on dropper assigned address, afterwards extracting/injection dropper system is inserted designated depth in extracting/injector well and tighten upper and lower side snap joint, then opening ball valve.Then open external compression air source of the gas, upper and lower side Pneumatic sealing ring is expanded and guarantees the sealing in space between upper and lower side Pneumatic sealing ring.Coordinate outside extracting or injecting systems, namely can realize individual well layering injection or extracting.
The utility model technology has the following advantages compared with currently available technology:
(1): by adjusting the mode of dropper position and upper and lower side Pneumatic sealing ring interval, real-time adjustment aim repair layer position, thus renovation technique can be optimized, improving remediation efficiency.And the target repair layer position of traditional extracting/injector well is determined by screen casing length and location, once cannot adjust in real time after installing.
(2): can by adjusting the mode of dropper position and upper and lower side Pneumatic sealing ring interval, target repair layer position is divided into several small spacer layer position layering reparations, when overcoming for whole target repair layer position reparation, the reparation that soil heterogeneous body causes is uneven and not thorough.
(3): by adjusting the mode of dropper position and upper and lower side Pneumatic sealing ring interval, the real-time switching of individual well extracting and function of injection can be realized.And conventional injection well and extraction well are all installed according to Site characteristic parameter designing, cannot guarantee that a well meets the technical requirement of injection and extracting simultaneously, the function that individual well takes into account extracting and injection simultaneously cannot be realized.
Accompanying drawing explanation
The layering extracting of Fig. 1 individual well and injection device structural representation
The layering extracting of Fig. 2 individual well and injection device inflated condition structural representation
Fig. 3 Pneumatic sealing ring cross-sectional view
Detailed description of the invention
Be described in detail to this use is novel below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, the utility model technology is a set ofly be applied to contaminated site recovery project, can realize the device of individual well layering extracting and function of injection, comprise extracting/injector well system, extracting/injection dropper system and layering pneumostop system.
Described extracting/injector well system comprises lower end snap joint (not being with by order end) (1), white pipe (2), screen casing (3), bottom (4), cement mortar (5), bentonite (6) and quartz sand (7).Described lower end snap joint (not being with by order end) (1) is with outer silk screw thread, and is connected with described white pipe (2) upper end.Described white pipe (2) lower end is connected with screen casing (3) upper end, and screen casing (3) lower end is furnished with bottom (4).The above tubing and joint are De63 specification UPVC material.Screen casing (3) sieve seam width is 0.2mm, and sieve kerf spacing is 3mm.Well casing outer wall and to install between native hole space filled stone sand (7), bentonite (6) and cement mortar (5) successively from bottom to up.The utility model extracting/injector well screen casing (3) length need contain whole target repair layer position, so that realize layering extracting and injection as required in repair process.
Extracting/injection dropper system comprises three angle kerves (14) of transparent high-pressure hose (8), ball valve (9), pressure vacuum meter (10), three hole top covers (11), upper end snap joint (with by order end) (12), dropper (13) and dropper bottom.Transparent high-pressure hose (8) length of PVC material is 30cm, and the dropper (13) of De25UPVC material is inserted at two ends, and is fixed by stainless steel anchor ear.The UPVC material that ball valve (9) is De25 specification.Pressure vacuum meter (10) range is-0.1 ~ 1.5Mpa, the equal meet volume range request when vacuum extraction and malleation injection.The UPVC material that three hole top covers (11) are De63 specification, being distributed with 2 diameter 6mm and 1 diameters is the aperture of 25mm, is respectively 2 compressed air hoses (15) and burette exit port.Three hole top cover (11) bottoms are the UPVC upper end snap joint (being with by order end) (12) of De63 specification, band internal thread screw thread, supporting with the lower end snap joint (be not with and hold by making) (1) of extracting/injector well system, can connect fast and dismantle.Three angle kerves (14) drift angle of dropper bottom is 120 °, and drift angle otch span is 13mm.The degree of depth that dropper (13) inserts extracting/injector well inside is determined according to Site characteristic parameter, and top is connected to external vacuum extracting or injecting systems through after three hole top covers (11) always.
Layering pneumostop system mainly comprises compression gas pipe (15), upper end Pneumatic sealing ring (16) and lower end Pneumatic sealing ring (17).Compression gas pipe (15) is PU6mm*4mm specification, and upper and lower side Pneumatic sealing ring (16,17) is connect soon in succession by pneumatic.Upper and lower side Pneumatic sealing ring (16,17) is all enclosed within dropper (13), lays respectively at the two ends up and down of dropper three angle kerve (14), keeps at a certain distance away.The compression gas pipe (15) of upper end Pneumatic sealing ring (16) from inflation inlet (18) out after, extend along dropper (13) outer wall, after going out from three hole top covers (11), then be connected to external compression air source of the gas; The compression gas pipe (15) of lower end Pneumatic sealing ring (17) extends along the inwall of dropper (13), behind upper end Pneumatic sealing ring (16) position, go out from the perforation of dropper (13) wall, then be connected to external compression air source of the gas along dropper (13) outer wall through after three hole top covers (11).Dropper (13) wall punch position sealing silica gel sealing, guarantees air-tightness.Upper and lower side Pneumatic sealing ring (16,17) annular hollow structure is, the high voltage bearing silica gel material of acid and alkali-resistance, is fixed on dropper (13) by the quick clip of the stainless steel of its upper and lower both sides (19), and adjusting position as required.Under non-inflated state, Pneumatic sealing ring (16,17) internal radius 25mm, external diameter 45mm, height 16mm.Under inflated condition, upper and lower side Pneumatic sealing ring (16,17) expands to the periphery, and outer wall is close to extracting/injector well inside pipe wall, guarantees that in extracting and injection process, sealing ring outer wall and well casing inwall air-tightness are good.The inflation inlet (18) of upper end Pneumatic sealing ring (16) is vertically arranged on sealing ring top, and inflation inlet (18) level of lower end Pneumatic sealing ring (17) is arranged on the cylinder tangent plane between sealing ring and dropper (13), to extend inwards and after passing dropper (13) wall, appear vertically upward again, shape similar " L " shape.
When carrying out extracting operation, dropper (13) is connected to external vacuum extraction system; When carrying out injection operation, dropper (13) is connected to External infusion system.Before extracting and injection operation, first determine target repair layer position, according to the degree of depth in repair layer position adjustment dropper (13) fill-in well and the interval of upper and lower side Pneumatic sealing ring (16,17).Generally, upper and lower side Pneumatic sealing ring (16,17) interval should comprise and repairs destination layer position or suitably slightly larger than reparation destination layer position, and dropper three angle kerve (14) is positioned at the middle part of upper and lower side Pneumatic sealing ring (16,17).Meanwhile, also the position of dropper (13) and the interval of upper and lower side Pneumatic sealing ring (16,17) can be adjusted flexibly according to Site characteristic situation during recovery project design.
By the upper and lower side Pneumatic sealing ring (16 in layering pneumostop system, 17) dropper (13) assigned address is arranged on, then extracting/injection dropper system is inserted designated depth in extracting/injector well, by upper and lower side snap joint (12,1) tighten, and open ball valve (9).Open external compression air source of the gas, upper and lower side Pneumatic sealing ring (16,17) is expanded, and sealing ring outer wall is close to extracting/injector well inside pipe wall.In the well of-0.1Mpa ~ 0.3Mpa in working pressure range, layering pneumostop system can keep good air-tightness, meets the requirement for extracting and injection pressure in all kinds of recovery technique.
Adjusting process parameter is often needed, as the target repair layer position of extracting and injector well in recovery project implementation process.And the target repair layer position of traditional extracting and injector well is determined by screen casing length and location, once cannot adjust in real time after installing.The utility model technology by adjusting the mode of dropper (13) position and upper and lower side Pneumatic sealing ring (16,17) interval, real-time adjustment aim repair layer position, thus can optimize renovation technique, improves remediation efficiency.
When in target repair layer position, soil layer type differs and there is privileged way, tradition extracting and injector well repair will mainly concentrate on the soil layer in the comparatively large and privileged way region of infiltration coefficient in destination layer position, because when infiltration coefficient is comparatively large and privileged way region soil layer extracting underground pollution medium repairs medicament with injection, the resistance that need overcome is less; And repair is limited for the restoring area repairing effect beyond the less soil layer of infiltration coefficient in target repair layer position and privileged way, does not have repairing effect even completely.The utility model can by adjustment dropper (13) position and upper and lower side Pneumatic sealing ring interval (16,17) mode, target repair layer position is divided into several closely-spacedly to repair, make each closely-spaced interior soil layer relatively homogeneous, overcome the heterogeneous adverse effect of soil layer.
A recovery project may utilize extraction well and injector well to repair simultaneously, conventional injection well and extraction well are all installed according to Site characteristic parameter designing, the target repair layer position of extraction well and injector well is often inconsistent, cannot realize the function that individual well takes into account extracting and injection simultaneously.The utility model by adjusting the mode of dropper (13) position and upper and lower side Pneumatic sealing ring (16,17) interval, can realize the real-time switching of individual well extracting and function of injection.
Claims (6)
1. for individual well layering extracting and the injection device of contaminated site recovery project, it is characterized in that: device comprises extracting/injector well system, extracting/injection dropper system and layering pneumostop system,
Described extracting/injector well system comprises lower end snap joint (1), white pipe (2), screen casing (3), bottom (4), cement mortar (5), bentonite (6) and quartz sand (7), described lower end snap joint (1) the outer silk screw thread of band is also connected with described white pipe (2) upper end, described white pipe (2) lower end is connected with screen casing (3) upper end, screen casing (3) lower end is furnished with bottom (4), well casing outer wall and to install between native hole space filled stone sand (7) successively from bottom to up, bentonite (6) and cement mortar (5),
Extracting/injection dropper system comprises transparent high-pressure hose (8), ball valve (9), pressure vacuum meter (10), three hole top covers (11), upper end snap joint (12), three angle kerves (14) of dropper (13) and dropper bottom, transparent high-pressure hose (8) two ends are inserted in outside dropper, fixed by stainless steel anchor ear, three hole top covers (11) are for being distributed with the aperture of 3 different-diameters, be respectively 2 compressed air hoses (15) and dropper (13) outlet, three hole top cover (11) bottoms are upper end snap joint (12), band internal thread screw thread, supporting with the lower end snap joint (1) of extracting/injector well system, can connect fast and dismantle, three angle kerves (14) drift angle of dropper bottom is 120 °, three angle kerves (14) span is 13mm, dropper (13) is connected to external vacuum extracting or injecting systems through after three hole top covers (11) always,
Layering pneumostop system mainly comprises compressed air hose (15), upper end Pneumatic sealing ring (16) and lower end Pneumatic sealing ring (17), compressed air hose (15) and upper and lower side Pneumatic sealing ring (16, 17) connect in succession soon by pneumatic, upper and lower side Pneumatic sealing ring (16, 17) be all enclosed within dropper (13), lay respectively at the two ends up and down of dropper three angle kerve (14), keep at a certain distance away, by being connected to compression gas pipe (15) air feed of external compression air source of the gas, upper and lower side Pneumatic sealing ring (16, 17) annular hollow structure is, the high voltage bearing silica gel material of acid and alkali-resistance, be fixed on dropper (13) by the quick clip of the stainless steel of its upper and lower both sides (19), can adjusting position as required, under inflated condition, upper and lower side Pneumatic sealing ring (16, 17) expand to the periphery, outer wall is close to extracting/injector well inside pipe wall, guarantee that in extracting and injection process, sealing ring outer wall and well casing inner wall sealing are good.
2. according to claim 1 for individual well layering extracting and the injection device of contaminated site recovery project, it is characterized in that, unaerated state is enclosed within the pneumostop up and down (16 on dropper (13), 17) enclose external diameter and be less than extracting/injector well internal diameter, dropper (13) position in well can be adjusted flexibly.
3. according to claim 1 for individual well layering extracting and the injection device of contaminated site recovery project, it is characterized in that, upper and lower side Pneumatic sealing ring (16,17) external compression air source of the gas is connected to by compression gas pipe (15), can expand in the deflated condition and be close to well tubular wall, make to keep sealing between upper and lower side Pneumatic sealing ring (16,17), vacuum extraction and malleation injection can be carried out for this interval.
4. according to claim 1 for individual well layering extracting and the injection device of contaminated site recovery project, it is characterized in that, dropper (13) after ball valve (9) connects the long transparent high-pressure hose (8) of 30cm, can Real Time Observation dropper internal flow state.
5. according to claim 1 for individual well layering extracting and the injection device of contaminated site recovery project, it is characterized in that, the sieve seam of extracting/injector well system screen casing (3) is 0.02mm, sieve kerf spacing is 3mm, and screen casing (3) length covers whole target repair layer position, follow-up can as required adjustment aim layer position or layering injection.
6. according to claim 1 for individual well layering extracting and the injection device of contaminated site recovery project, it is characterized in that, can by adjustment dropper (13) position and upper and lower side Pneumatic sealing ring (16,17) mode at position and interval, realizes individual well layering extracting and injection.
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| CN107185955A (en) * | 2017-05-12 | 2017-09-22 | 清华大学 | Contaminated soil original position eddy current type thermal desorption system |
| CN107185955B (en) * | 2017-05-12 | 2020-07-28 | 清华大学 | Contaminated soil in-situ eddy current type thermal desorption system |
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| CN111157289B (en) * | 2019-10-30 | 2021-09-07 | 中国科学院南京土壤研究所 | Application method of connecting and sealing device |
| CN111099755A (en) * | 2019-12-21 | 2020-05-05 | 刘福东 | Underground water restoration circulating well and using method thereof |
| CN110947747A (en) * | 2020-01-06 | 2020-04-03 | 北京中岩大地科技股份有限公司 | In-situ vacuum negative pressure mass transfer polluted soil remediation method |
| CN112058887A (en) * | 2020-09-15 | 2020-12-11 | 森特士兴集团股份有限公司 | Pneumatic fracturing strengthening multiphase extraction system for pollution site treatment |
| CN112058887B (en) * | 2020-09-15 | 2021-10-08 | 森特士兴集团股份有限公司 | Pneumatic fracturing strengthening multiphase extraction system for pollution site treatment |
| CN113532940A (en) * | 2021-06-23 | 2021-10-22 | 成都理工大学 | Multifunctional test testing equipment for repairing heterogeneous soil groundwater |
| CN113532940B (en) * | 2021-06-23 | 2022-08-30 | 成都理工大学 | Multifunctional test testing equipment for repairing heterogeneous soil groundwater |
| CN113617812A (en) * | 2021-07-08 | 2021-11-09 | 苏州市宏宇环境科技股份有限公司 | Extraction and injection integrated device |
| CN113617812B (en) * | 2021-07-08 | 2022-08-30 | 苏州市宏宇环境科技股份有限公司 | Extraction and injection integrated device |
| CN113500094A (en) * | 2021-07-26 | 2021-10-15 | 复岘环保科技(上海)有限公司 | Soil pollution monitoring and ecological restoration method |
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