NDLI: The Lasting Impacts of Offline Periods in Lime Dosed Streams: A Case Study in Raccoon Creek, Ohio

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The Lasting Impacts of Offline Periods in Lime Dosed Streams: A Case Study in Raccoon Creek, Ohio

Content Provider	Springer Nature Link
Author	Kruse, Natalie A. Bowman, Jennifer R. Mackey, Amy L. McCament, Benny Johnson, Kelly S.
Copyright Year	2012
Abstract	Hewett Fork in Raccoon Creek, Ohio was a large source of acid mine drainage (AMD) to the main stem of Raccoon Creek, impacting the biological community for several kilometers. To reduce this impact, the AMD treatment was implemented in the Hewett Fork subwatershed to treat water from the largest mine drainage source in the watershed near the village of Carbondale. From prior to installation of wetland treatment in 2000 and installation of the lime doser in 2004, the pH of the mine discharge has been raised from about 4 to about 9, which greatly improved biological communities in Hewett Fork and Raccoon Creek. During the summer of 2010, the doser was off-line for approximately 2 weeks. While the chemistry of Hewett Fork showed little lasting change due to non-treatment, biological surveys show the effect of temporary non-treatment. In the year and a half since the doser was off-line, surveys have shown that the fish community was seriously impacted due to non-treatment and it has not yet recovered; the macroinvertebrate community, on the other hand, showed little impact due to non-treatment, and has shown no lasting effect of non-treatment.Hewett Fork am Raccoon Creek, Ohio, war eine bedeutende Austrittstelle sauren Grubenwassers in den Hauptstrom des Raccoon Creek, der die Artengemeinschaft auf mehreren Kilometern beeinträchtigte. Um diese Belastung zu reduzieren, wurde eine Grubenwasseraufbereitung im Einzugsgebiet des Hewett Fork installiert. Diese reinigt das Grubenwasser der größten Austrittstelle im Wassereinzugsgebiet nahe dem Dorf Carbondale. Bevor im Jahr 2000 ein konstruiertes Feuchtgebiet errichtet wurde, wies das Grubenwasser einen pH Wert von 4 auf. Nachdem im Jahr 2004 zusätzlich eine Kalkdosierung installiert wurde, stiegt der pH zwischenzeitlich auf 9 an. Dies hatte zur Folge, dass die Artengemeinschaft im Hewett Fork und Raccoon Creek deutlich verbessert wurde. Im Verlauf des Sommers 2010 war die Dosierungsanlage circa 2 Wochen außer Betrieb. Während sich der Chemismus im Hewett Fork durch die Nichtbehandlung nur geringfügig veränderte, zeigen biologische Erhebungen die Auswirkungen der vorübergehenden Nichtbehandlung. Wie diese Untersuchungen belegen, wurde die Fischgemeinschaft in den 1 ½ Jahren seit der Nichtbehandlung durch den Ausfall des Kalkdosierers ernsthaft beeinträchtigt und hat sich bislang nicht erholt. Andererseits hatte die Nichtbehandlung auf die Makroinvertebratengemeinschaft nur eine geringe Auswirkung und sie zeigte dadurch keinen bleibenden Schaden.Hewett Fork en Raccoon Creek, Ohio fue una gran fuente de drenaje ácido de mina (AMD), impactando la comunidad biológica por muchos kilómetros. Para reducir este impacto, se implementó el tratamiento del AMD fue implementado en la subcuenca Hewett Fork para tratar agua proveniente de la mayor fuente de drenaje de mina en la cuenca cerca de la villa de Carbondale. Desde la instalación de un tratamiento wetland en 2000 y la instalación de un dosificador de lima en 2004, el pH de la descarga de la mina ha sido elevado desde 4 hasta 9 lo cual mejoró significativamente las comunidades biológicas en Hewett Fork y Raccoon Creek. Durante el verano de 2010, el dosificador estuvo inactivo por aproximadamente 2 semanas. Mientras la química de Hewett Fork mostró un cambio apenas perdurable debido al no tratamiento, los estudios biológicos mostraron el efecto del detenimiento temporario del tratamiento. En el año y medio desde que el dosificador está inactivo, los estudios han mostrado que la comunidad ictícola fue seriamente impactada debido al no tratamiento y aun no ha sido recuperada; la comunidad macroinvertebrada, por otro lado, muestra un pequeño impacto y no ha mostrado ningún efecto perdurable debido al no tratamiento.Hewett岔口 (Hewett Fork)向干流河道俄亥俄州浣熊溪(Raccoon Creek)排放大量酸性矿井水(AMD)而影响了数公里范围内的河道生物群落。为了减少此影响,在Hewett 岔口(Hewett Fork)子流域内处理来自Carbondale村附近的最大酸性矿井水水源。自2000年湿地处理系统安装之前至2004年石灰投放系统安装期间,矿井水pH值已经从4左右升高到9左右,大大改善了Hewett 岔口(Hewett Fork) 和浣熊溪(Raccoon Creek)的生物群落。2010年夏,投放系统短时间中断石灰投放约两周。虽然Hewett 岔口(Hewett Fork)水化学特性未因此发生明显变化,却对河流生物群落产生了遗留影响。在投放系统短时处理中断的一年半之后,调查显示鱼类受短时间处理中断影响最大而且还未完全恢复,而大型无脊椎动物受影响较小且无明显遗留影响。.
Starting Page	266
Ending Page	272
Page Count	7
File Format	PDF
ISSN	10259112
Journal	Mine Water and the Environment
Volume Number	31
Issue Number	4
e-ISSN	16161068
Language	Chinese
Publisher	Springer-Verlag
Publisher Date	2012-06-15
Publisher Institution	International Mine Water Association (IMWA)
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Calcium oxide Active treatment Doser Biological recovery Energy Economics Ecotoxicology Hydrogeology Geology Sedimentology
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Geotechnical Engineering and Engineering Geology

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