Using radon-222 as indicator for the evaluation of the efficiency of groundwater remediation by in situ air sparging

被引：20

作者：

Schubert, Michael ^{[1
]}

Schmidt, Axel ^{[1
]}

Mueller, Kai ^{[2
]}

Weiss, Holger ^{[1
]}

机构：

[1] UFZ Helmholtz Ctr Environm Res, D-04318 Leipzig, Germany

[2] GICON GmbH, D-01219 Dresden, Germany

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2011年 / 102卷 / 02期

关键词：

Air sparging; Radon; Tracer; Groundwater remediation; VOC; NATURALLY-OCCURRING TRACER; GAS INJECTION; RADON; FLOW; PERFORMANCE; DISCHARGE; GASOLINE; AQUIFER; LAKES; ZONE;

D O I：

10.1016/j.jenvrad.2010.11.012

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A common approach for remediation of groundwater contamination with volatile organic compounds (VOCs) is contaminant stripping by means of in situ air sparging (IAS). For VOC stripping, pressurized air is injected into the contaminated groundwater volume, followed by the extraction of the contaminant-loaded exhaust gas from the vadose soil zone and its immediate on-site treatment. Progress assessment of such remediation measure necessitates information (i) on the spatial range of the IAS influence and (ii) on temporal variations of the IAS efficiency. In the present study it was shown that the naturally occurring noble gas radon can be used as suitable environmental tracer for achieving the related spatial and temporal information. Due to the distinct water/air partitioning behaviour of radon and due to its straightforward on-site detectability, the radon distribution pattern in the groundwater can be used as appropriate measure for assessing the progression of an IAS measure as a function of space and time. The presented paper discusses both the theoretical background of the approach and the results of an IAS treatment accomplished at a VOC contaminated site lasting six months, during which radon was applied as efficiency indicator. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：193 / 199

页数：7

共 34 条

[1] Extent of benzene biodegradation in saturated soil column during air sparging [J].

Adams, JA ;

Reddy, KR .

GROUND WATER MONITORING AND REMEDIATION, 2003, 23 (03) :85-94

[2] A CONCEPTUAL-MODEL OF FIELD BEHAVIOR OF AIR SPARGING AND ITS IMPLICATIONS FOR APPLICATION [J].

AHLFELD, DP ;

DAHMANI, A ;

JI, W .

GROUND WATER MONITORING AND REMEDIATION, 1994, 14 (04) :132-139

[3] Performance of air sparging systems: a review of case studies [J].

Bass, DH ;

Hastings, NA ;

Brown, RA .

JOURNAL OF HAZARDOUS MATERIALS, 2000, 72 (2-3) :101-119

[4] Environmental impact and mechanisms of the biological clogging of saturated soils and aquifer materials [J].

Baveye, P ;

Vandevivere, P ;

Hoyle, BL ;

DeLeo, PC ;

de Lozada, DS .

CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY, 1998, 28 (02) :123-191

[5] Tracer studies for evaluation of in situ air sparging and in-well aeration system performance at a gasoline-contaminated site [J].

Berkey, JS ;

Lachmar, TE ;

Doucette, WJ ;

Dupont, RR .

JOURNAL OF HAZARDOUS MATERIALS, 2003, 98 (1-3) :127-144

[6] Estimating the dynamics of groundwater input into the coastal zone via continuous radon-222 measurements [J].

Burnett, WC ;

Dulaiova, H .

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 2003, 69 (1-2) :21-35

[7]

Clever H.L., 1979, IUPAC Solubility Data Series, Vol. 2: Krypton, V2

[8] Inferring ground water flow in fractured rock from dissolved radon [J].

Cook, PG ;

Love, AJ ;

Dighton, JC .

GROUND WATER, 1999, 37 (04) :606-610

[9] Direct gas injection into saturated glass beads: Transition from incoherent to coherent gas flow pattern [J].

Geistlinger, Helmut ;

Krauss, Gunnar ;

Lazik, Detlef ;

Luckner, Ludwig .

WATER RESOURCES RESEARCH, 2006, 42 (07)

[10]

GODEKE S, 2004, THESIS EBERHARD KARL

← 1 2 3 4 →