DE3931013A1 - Arrangement for removing volatile impurities from ground water - in which efficiency of system for passing cleaning gas through water in borehole is improved by recirculating some of used cleaning gas - Google Patents

Arrangement for removing volatile impurities from ground water - in which efficiency of system for passing cleaning gas through water in borehole is improved by recirculating some of used cleaning gas

Info

Publication number
DE3931013A1
DE3931013A1 DE3931013A DE3931013A DE3931013A1 DE 3931013 A1 DE3931013 A1 DE 3931013A1 DE 3931013 A DE3931013 A DE 3931013A DE 3931013 A DE3931013 A DE 3931013A DE 3931013 A1 DE3931013 A1 DE 3931013A1
Authority
DE
Germany
Prior art keywords
cleaning gas
cleaning
gases
stage
arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE3931013A
Other languages
German (de)
Other versions
DE3931013C2 (en
Inventor
Werner Dr Ing Buermann
Bruno Dr Ing Herrling
Bruno Bernhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IEG Industrie Engineering GmbH
Original Assignee
IEG Industrie Engineering GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE8915877U priority Critical patent/DE8915877U1/de
Application filed by IEG Industrie Engineering GmbH filed Critical IEG Industrie Engineering GmbH
Priority to DE3931013A priority patent/DE3931013C2/en
Priority to ES199090115958T priority patent/ES2036081T3/en
Priority to EP90115958A priority patent/EP0418572B1/en
Priority to AT90115958T priority patent/ATE82786T1/en
Priority to DE9090115958T priority patent/DE59000506D1/en
Priority to US07/581,746 priority patent/US5095975A/en
Priority to CA002025385A priority patent/CA2025385C/en
Publication of DE3931013A1 publication Critical patent/DE3931013A1/en
Application granted granted Critical
Publication of DE3931013C2 publication Critical patent/DE3931013C2/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/34—Arrangements for separating materials produced by the well
    • E21B43/40—Separation associated with re-injection of separated materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0005—Degasification of liquids with one or more auxiliary substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0031—Degasification of liquids by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0042—Degasification of liquids modifying the liquid flow
    • B01D19/0047—Atomizing, spraying, trickling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/34—Arrangements for separating materials produced by the well
    • E21B43/38—Arrangements for separating materials produced by the well in the well
    • E21B43/385—Arrangements for separating materials produced by the well in the well by reinjecting the separated materials into an earth formation in the same well
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00—In situ
    • 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

Abstract

The filters (23,28) used in a system for removing volatile impurities from ground water have at least one pipe connection (26,29) for recirculating the cleaning gas or gas mixture to the borehole (10). The filter arrangement (23,28) has at least two stages, and at least after the first of these stages (23), and upstream of a throttling valve (25), a connection (26) is provided to the inlet pipe (17) which brings the cleaning gas or gas mixture to the borehole (10). The first filter stage (23) is a coarse filter, and at least one further stage for a finer filtration is provided. The second filtration stage (28) may take the form of a cold reactor for the removal of contaminants. The cleaning gas may be air, with or without the addition of carrier gases. USE/ADVANTAGE - This invention is used for removing volatile impurities from ground water and from the surrounding earth. The proposed arrangement improves the effectiveness and economy of existing similar devices.

Description

Die Erfindung betrifft eine Anordnung zum Austreiben leichtflüchtiger Verunreinigungen aus dem Grundwasser und dem von ihm durchströmten Erdreich durch Erzeugen von Unterdruck in einem bis zum verunreinigten Grundwasser­ bereich getriebenen Brunnenschacht mit einem Kanal zur Zu­ leitung von Reinigungsgasen oder Gasgemischen unter den Wasserspiegel im Brunnenschacht, mit Vorrichtungen zum Ab­ saugen des Reinigungsgases oder Gasgemisches und mit den Absaugvorrichtungen nachgeschalteten Filtereinrichtungen.The invention relates to an arrangement for expulsion volatile contaminants from groundwater and the earth through which it flows by generating Negative pressure in a contaminated groundwater area-driven well shaft with a channel to the Zu line of cleaning gases or gas mixtures among the Water level in the well shaft, with devices for draining suck the cleaning gas or gas mixture and with the Suction devices downstream filter devices.

Eine Anordnung zur Reinigung kontaminierter, grundwasser­ führender Schichten ist bereits vorgeschlagen worden (DE- PS 38 05 200). Bei jener Anordnung wird Frischluft von oberhalb der Erdoberfläche durch in einem Brunnenschacht erzeugten Unterdruck bis unterhalb des Grundwasserspiegels in den Schacht eingeleitet. Nach dem Durchströmen des kon­ taminierten Grundwassers wird die Luft aus dem Schacht ab­ gesaugt und über ein Filter wieder nach außen abgegeben.An arrangement for cleaning contaminated groundwater leading layers have already been proposed (DE- PS 38 05 200). With that arrangement, fresh air from above the surface of the earth in a well shaft generated negative pressure to below the water table  introduced into the shaft. After flowing through the con contaminated groundwater, the air is removed from the shaft sucked and released to the outside again via a filter.

Der Erfindung liegt die Aufgabe zugrunde, die eingangs ge­ nannte, bereits vorgeschlagene Anordnung in ihrer Wirksam­ keit und im Kostenaufwand zu verbessern.The invention has for its object the ge named, already proposed arrangement in its effectiveness to improve speed and costs.

Die gestellte Aufgabe wird mit einer Anordnung der ein­ gangs genannten Art erfindungsgemäß dadurch gelöst, daß die Filtereinrichtung mindestens eine Verbindung zum Zu­ leitungskanal für die Reinigungsgase oder Gasgemische zur mindestens teilweisen Rückführung der Gase in den Brunnen­ schacht aufweist.The task is presented with an arrangement of a gangs mentioned type solved according to the invention in that the filter device has at least one connection to the zu line duct for the cleaning gases or gas mixtures for at least partial return of the gases to the well has shaft.

Das zumindest teilweise Rückführen der gefilterten Gase in den Brunnenschacht ermöglicht eine häufige Wiederverwen­ dung der Gase zur Reinigung des kontaminierten Grund­ wassers. Dadurch wird das ständige Zuführen frischer und unter Umständen teurer Spezialgase zur Reinigung über­ flüssig. Bei der Verwendung von Luft zur Reinigung, die an sich einfach und preiswert von oberhalb der Erdoberfläche angesaugt werden kann, bietet das Rückführen der gefilter­ ten Abluft den Vorteil, daß unerwünschte Oxidationsvor­ gänge in den grundwasserführenden Bodenschichten vermin­ dert werden können.The at least partial recycling of the filtered gases the well shaft enables frequent reuse formation of the gases for cleaning the contaminated ground water. This makes the constant feeding fresh and possibly expensive special gases for cleaning over liquid. When using air for cleaning, the easy and inexpensive from above the earth's surface can be sucked in, offers the return of the filtered ten exhaust air the advantage that undesirable Oxidvorvor Reduce aisles in the groundwater layers can be changed.

Die Filtereinrichtung zur Reinigung der Abluft bzw. der kontaminierten Reinigungsgase kann vorteilhafterweise mehrstufig ausgebildet sein, wobei die erste Filterstufe der Grobfilterung und die weiteren Stufen der Feinfil­ terung der Gase oder Gasgemische dienen. Die mit dieser mehrstufigen Anordnung erzielbare Filterwirkung ist wesentlich größer als bei einer einstufigen Ausführung. Die Anordnung einer Verbindung zum Zuleitungskanal der Reinigungsgase in den Schacht bereits nach der ersten Filterstufe, wobei der Anteil des über diese Verbindung rückgeführten Gases über eine Drosselklappe einstellbar ist, ermöglicht es, bei nur schwacher Verschmutzung des Grundwassers eine unnötige Feinfilterung des Reinigungs­ gases durch die nachfolgenden Stufen zu vermeiden. Der Filteraufwand ist also dem Verschmutzungsgrad anpaßbar, wodurch sowohl der Zeit- als auch der Kostenaufwand für die Filterung der Abluft oder der Abgase steuerbar ist.The filter device for cleaning the exhaust air or contaminated cleaning gases can advantageously be designed in several stages, the first filter stage the coarse filtering and the further stages of the fine fil serve the gases or gas mixtures. The one with this  multi-stage arrangement is achievable filter effect much larger than a one-stage version. The arrangement of a connection to the supply channel of the Cleaning gases in the shaft after the first Filter stage, the proportion of this connection recirculated gas adjustable via a throttle valve is, makes it possible to clean the Groundwater an unnecessary fine filtering of the cleaning to avoid gases through the subsequent stages. The The filter effort can therefore be adapted to the degree of contamination, whereby both the time and the cost for the filtering of the exhaust air or exhaust gases is controllable.

Zur Feinfilterung kann eine der ersten Stufe nachgeschal­ teten Filterstufen einen Kältereaktor zum Ausfrieren von Verunreinigungen aufweisen, wobei das Ausfrieren von Verunreinigungen ein kostengünstiges und sehr effizientes Filterverfahren ist.One of the first stages can be added for fine filtering Filter stages a cold reactor to freeze out Have impurities, the freezing out of Impurities an inexpensive and very efficient Filtering method is.

Die Anordnung der Erfindung stellt also eine äußerst effektive und im Aufwand regulierbare Vorrichtung zum Aus­ treiben leichtflüchtiger Verunreinigungen aus grundwasser­ führenden Bodenschichten dar. Außerdem gewährleistet die Anordnung eine Reinigung von grundwasserführenden Boden­ schichten, die die chemische Zusammensetzung des Bodens möglichst wenig beeinflußt.The arrangement of the invention therefore represents an extreme effective and adjustable device for the Aus drive volatile impurities from groundwater leading soil layers. In addition, the Arrangement a cleaning of groundwater-carrying soil layers that reflect the chemical composition of the soil influenced as little as possible.

Nachfolgend wird ein Ausführungsbeispiel der Anordnung ge­ mäß der Erfindung anhand der beiliegenden Zeichnung näher erläutert. An exemplary embodiment of the arrangement is described below according to the invention with reference to the accompanying drawings explained.  

Die Zeichnung zeigt einen schematischen Längsschnitt durch eine erfindungsgemäße Anordnung. Es ist ein Brunnenschacht 10, der durch eine Bodenschicht 11 bis in einem Grund­ wasserbereich 12 getrieben ist, dargestellt. Der Grund­ wasserspiegel ist durch die gestrichelte Linie 13 angedeu­ tet. Durch den im Brunnenschacht 10 herrschenden Unter­ druck wird der Grundwasserspiegel im Brunnenschacht und im umgebenden Erdreich entsprechend der gestrichelten Linie 13a angehoben. Im Schacht selbst ist der Grundwasser­ spiegel mit 13′ bezeichnet. Oberhalb des Grundwasser­ spiegels 13′ ist der Schacht 10 mit einer luftundurchläs­ sigen Wandung 14 und einen ebenfalls luftundurchlässigen Deckel 15 luft- und gasdicht abgeschlossen. Entlang eines Zufuhrkanales 17 wird durch den durch eine Pumpe 16 er­ zeugten Unterdruck im Brunnenschacht 10 Reinigungsgas zu einem Bereich 21 unter einer im Schacht unterhalb des Grundwasserspiegels 13′ angeordneten Siebplatte 18 gelei­ tet. Die Siebplatte 18 ist mittels Ketten 19 an einem Schwimmring 20 befestigt und wird so in einem konstanten Abstand unterhalb des Grundwasserspiegels 13′ im Schacht 10 gehalten. Das Reinigungsgas strömt aus dem Bereich 21 unterhalb der Siebplatte 18 durch deren Öffnungen und durch einen Bereich 22 im Grundwasser 12 nach oben. Dabei kann das Reinigungsgas flüchtige Verunreinigungen des Grundwassers binden und über die Pumpe 16 mit aus dem Schacht abführen. Nach der Pumpe 16 ist eine erste Filter­ stufe 23 angeordnet, die eine Grobreinigung der Abluft oder Abgase durchführt. Nach Durchlaufen der ersten Filterstufe 23 können die Reinigungsgase, gesteuert durch eine Luftdrossel 25, teilweise über eine Verbindung 26 in den Gaszuleitungskanal 17 zurückströmen. Der andere Teil der Reinigungsgase durchläuft eine zweite Reinigungsstufe 28 zur Feinfilterung, bevor er über eine Verbindung 29 ebenfalls dem Zuleitungskanal 17 zugeführt wird. Eine Ein­ trittsöffnung 30 im Zuleitungskanal 17 dient der durch eine Luftdrossel 31 gesteuerten Zufuhr frischer Luft oder frischer Reinigungsgase.The drawing shows a schematic longitudinal section through an arrangement according to the invention. It is a well shaft 10 , which is driven through a bottom layer 11 in a ground water area 12 , shown. The bottom water level is indicated by the dashed line 13 . Due to the prevailing in the well shaft 10 , the groundwater level in the well shaft and in the surrounding soil is raised according to the dashed line 13 a. In the shaft itself, the groundwater level is 13 '. Above the groundwater level 13 ', the shaft 10 with an air-impermeable wall 14 and an air-impermeable cover 15 is airtight and gas-tight. Along a supply channel 17 is by the vacuum generated by a pump 16 in the well 10 cleaning gas to an area 21 under a sieve plate 18 arranged in the shaft below the water table 13 '. The sieve plate 18 is fastened by means of chains 19 to a floating ring 20 and is thus held in the shaft 10 at a constant distance below the water table 13 '. The cleaning gas flows from the area 21 below the sieve plate 18 through its openings and through an area 22 in the groundwater 12 upwards. The cleaning gas can bind volatile contaminants in the groundwater and discharge them from the shaft via the pump 16 . After the pump 16 , a first filter stage 23 is arranged, which carries out a rough cleaning of the exhaust air or exhaust gases. After passing through the first filter stage 23 , the cleaning gases, controlled by an air throttle 25 , can partially flow back into the gas supply duct 17 via a connection 26 . The other part of the cleaning gases passes through a second cleaning stage 28 for fine filtering before it is also fed to the feed channel 17 via a connection 29 . An entry opening 30 in the supply channel 17 is used to control the supply of fresh air or fresh cleaning gases by an air throttle 31 .

Anstelle der hier dargestellten zweistufigen Filterein­ richtung sind natürlich auch mehrstufige Filtereinrichtun­ gen denkbar, wobei mindestens eine der Stufen mit Spezial­ einrichtungen, wie beispielsweise einem Kältereaktor, ver­ sehen sein kann.Instead of the two-stage filter shown here direction are of course also multi-stage filter devices gene conceivable, at least one of the stages with special facilities, such as a cold reactor, ver can be seen.

Claims (5)

1. Anordnung zum Austreiben leichtflüchtiger Verunreini­ gungen aus dem Grundwasser und dem von ihm durchström­ ten Erdreich durch Erzeugen von Unterdruck in einem bis zum verunreinigten Grundwasserbereich getriebenen Brun­ nenschacht mit einem Kanal zur Zuleitung von Reini­ gungsgasen oder Gasgemischen unter den Wasserspiegel im Brunnenschacht, mit Vorrichtungen zum Absaugen des Reinigungsgases oder Gasgemisches und mit den Absaug­ vorrichtungen nachgeschalteten Filtereinrichtungen, dadurch gekennzeichnet, daß die Filtereinrichtung (23, 28) mindestens eine Verbindung (26, 29) zum Zuleitungs­ kanal (17) für die Reinigungsgase oder Gasgemische zur mindestens teilweisen Rückführung der Gase in den Brun­ nenschacht (10) aufweist.1. Arrangement for expelling volatile impurities from the groundwater and the soil through which it flows by generating negative pressure in a well shaft driven up to the contaminated groundwater area with a channel for supplying cleaning gases or gas mixtures under the water level in the well shaft, with devices for Sucking off the cleaning gas or gas mixture and with the suction devices downstream filter devices, characterized in that the filter device ( 23 , 28 ) at least one connection ( 26 , 29 ) to the supply channel ( 17 ) for the cleaning gases or gas mixtures for at least partial return of the gases in has the well shaft ( 10 ). 2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Filereinrichtung (23, 28) mindestens zweistufig ausgebildet ist und daß mindestens nach der ersten dieser Stufen (23) vor einer Drosselklappe (25) eine Verbindung (26) zum Zuleitungskanal (17) der Reinigungsgase oder Gasgemische in den Brunnenschacht (10) ausgebildet ist. 2. Arrangement according to claim 1, characterized in that the filing device ( 23 , 28 ) is formed at least in two stages and that at least after the first of these stages ( 23 ) before a throttle valve ( 25 ) a connection ( 26 ) to the supply channel ( 17 ) Cleaning gases or gas mixtures is formed in the well shaft ( 10 ). 3. Anordnung nach Anspruch 1 oder 2, dadurch gekennzeich­ net, daß die erste Filterstufe (23) Einrichtungen für eine Grobfilterung und die mindestens eine weitere Stufe Einrichtungen für eine Feinfilterung der abge­ saugten Reinigungsgase und Gasgemische aufweisen.3. Arrangement according to claim 1 or 2, characterized in that the first filter stage ( 23 ) have devices for coarse filtering and the at least one further stage devices for fine filtering of the suctioned cleaning gases and gas mixtures. 4. Anordnung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß eine der ersten Stufe (23) nachge­ schaltete Filterstufe (28) einen Kältereaktor zum Aus­ frieren von Kontaminationsstoffen aufweist.4. Arrangement according to one of claims 1 to 3, characterized in that one of the first stage ( 23 ) downstream filter stage ( 28 ) has a cold reactor for freezing out contaminants. 5. Anordnung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Reinigungsgasgemisch aus Luft mit oder ohne Zusatz von Trägergasen besteht.5. Arrangement according to one of claims 1 to 4, characterized characterized in that the cleaning gas mixture of air with or without the addition of carrier gases.
DE3931013A 1989-09-16 1989-09-16 Arrangement for expelling volatile contaminants from the groundwater Revoked DE3931013C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE3931013A DE3931013C2 (en) 1989-09-16 1989-09-16 Arrangement for expelling volatile contaminants from the groundwater
DE8915877U DE8915877U1 (en) 1989-09-16 1989-09-16
EP90115958A EP0418572B1 (en) 1989-09-16 1990-08-21 Device for removing light volatile contaminants from ground water
AT90115958T ATE82786T1 (en) 1989-09-16 1990-08-21 ARRANGEMENT FOR DRIVING VOLATILE POLLUTANTS FROM GROUNDWATER.
ES199090115958T ES2036081T3 (en) 1989-09-16 1990-08-21 PROVISION TO EXTRACT EASY VOLATILE IMPURITIES FROM GROUND WATER.
DE9090115958T DE59000506D1 (en) 1989-09-16 1990-08-21 ARRANGEMENT FOR DRIVING LIGHT VEGETABLE IMPURITIES FROM GROUND WATER.
US07/581,746 US5095975A (en) 1989-09-16 1990-09-13 Arrangement for driving volatile impurities from ground water
CA002025385A CA2025385C (en) 1989-09-16 1990-09-14 System for removing volatile impurities from ground water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3931013A DE3931013C2 (en) 1989-09-16 1989-09-16 Arrangement for expelling volatile contaminants from the groundwater

Publications (2)

Publication Number Publication Date
DE3931013A1 true DE3931013A1 (en) 1991-03-28
DE3931013C2 DE3931013C2 (en) 1993-10-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE3931013A Revoked DE3931013C2 (en) 1989-09-16 1989-09-16 Arrangement for expelling volatile contaminants from the groundwater

Country Status (1)

Country Link
DE (1) DE3931013C2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176798A (en) * 1991-05-17 1993-01-05 Shell Oil Company System for removal and disposal of minor amounts of organics from contaminated water
DE4240969A1 (en) * 1992-12-05 1994-06-09 Dyckerhoff & Widmann Ag In-situ purificn. of soils, esp. dense soils of low permeability - comprises removing air contg. gaseous and volatile impurities from borehole, condensing and returning at least in part to soil
DE4407835A1 (en) * 1994-03-09 1995-09-14 Ieg Ind Engineering Gmbh Method and device for removing low volatility liquid contaminants of lower density than water from the groundwater flow
US5882486A (en) * 1996-01-18 1999-03-16 Moore, Jr.; John W. Glycol refining
US6773554B1 (en) 1996-01-18 2004-08-10 John W. Moore, Jr. Hazardous waste disposal
AU2017204375B2 (en) * 2016-06-28 2022-07-21 Coho Resources Pty Ltd Improvements in relation to pumps and the operation of pumps

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430122C2 (en) * 1994-08-25 1996-08-01 Zueblin Ag Process for groundwater and soil air purification and subsequent exhaust air treatment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805200C1 (en) * 1988-02-19 1988-09-29 Ieg - Industrie-Engineering Gmbh, 7410 Reutlingen, De Arrangement for expelling readily volatile impurities from groundwater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805200C1 (en) * 1988-02-19 1988-09-29 Ieg - Industrie-Engineering Gmbh, 7410 Reutlingen, De Arrangement for expelling readily volatile impurities from groundwater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CAV, H. 12, 1985, S. 52 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5176798A (en) * 1991-05-17 1993-01-05 Shell Oil Company System for removal and disposal of minor amounts of organics from contaminated water
DE4240969A1 (en) * 1992-12-05 1994-06-09 Dyckerhoff & Widmann Ag In-situ purificn. of soils, esp. dense soils of low permeability - comprises removing air contg. gaseous and volatile impurities from borehole, condensing and returning at least in part to soil
DE4407835A1 (en) * 1994-03-09 1995-09-14 Ieg Ind Engineering Gmbh Method and device for removing low volatility liquid contaminants of lower density than water from the groundwater flow
US5882486A (en) * 1996-01-18 1999-03-16 Moore, Jr.; John W. Glycol refining
US6080280A (en) * 1996-01-18 2000-06-27 Moore, Jr.; John W. Structure for refining glycol in a natural gas dehydration plant
US6773554B1 (en) 1996-01-18 2004-08-10 John W. Moore, Jr. Hazardous waste disposal
AU2017204375B2 (en) * 2016-06-28 2022-07-21 Coho Resources Pty Ltd Improvements in relation to pumps and the operation of pumps

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