气候变化领域集成服务门户(CCPortal): Temperature effects on bank filtration: Redox conditions and physical-chemical parameters of pore water at lake Tegel; Berlin; Germany

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DOI	10.2166/wcc.2010.005
	Temperature effects on bank filtration: Redox conditions and physical-chemical parameters of pore water at lake Tegel; Berlin; Germany
	Gross-Wittke A.; Gunkel G.; Hoffmann A.
发表日期	2010
ISSN	20402244
起始页码	55
结束页码	66
卷号	1 期号:1
英文摘要	In the city of Berlin, artificial groundwater recharge techniques, such as bank filtration and infiltration ponds, are an important source for drinking water production. Climate change with increasing surface water temperatures can influence the water purification processes during bank filtration mainly due the intensification of metabolic processes leading to a decrease of oxygen and an increase of anaerobic conditions. In Lake Tegel a significant increase of water temperature in the epilimnion of 2.4°C within the last 30 years was recorded. For a better understanding of induced bank filtration at Lake Tegel, redox processes and physical-chemical conditions within the surface sediment layers (0-26 cm depth) at the littoral infiltration zone were investigated. The influence of temperature in the range of 0-25°C on microbial catalysis of redox processes, such as reduction of nitrate and sulphate, was examined during the period March 2004-June 2005. High water temperatures (16-25°C) were accompanied by negative redox potentials (EH = -47 mV) and decreasing Ninorg concentrations, while the amount of ammonia, Mn2+ and Fe2+ was rising. This indicates redox processes such as denitrification, Mn4+ reduction, nitrate respiration and ammonification, as well as Fe3+ reduction. The reduction of sulphate, however, has not yet become significant at Lake Tegel, but with increasing water temperature, sulphate reduction must be expected. © IWA Publishing 2010.
英文关键词	Bank filtration; Climate change; Groundwater recharge; Redox chemical processes; Self-purification; Water temperature
语种	英语
scopus关键词	Bank filtration; Chemical process; Ground water recharge; Self-purification; Water temperatures; Climate change; Infiltration; Lakes; Manganese; Nitrates; Redox reactions; Sulfur compounds; Temperature; Water supply; Recharging (underground waters)
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148396
作者单位	Department of Water Quality Control, Berlin University of Technology, Sekr. KF 4, Straße des 17. Juni 135, 10623 Berlin, Germany
推荐引用方式 GB/T 7714	Gross-Wittke A.,Gunkel G.,Hoffmann A.. Temperature effects on bank filtration: Redox conditions and physical-chemical parameters of pore water at lake Tegel; Berlin; Germany[J],2010,1(1).
APA	Gross-Wittke A.,Gunkel G.,&Hoffmann A..(2010).Temperature effects on bank filtration: Redox conditions and physical-chemical parameters of pore water at lake Tegel; Berlin; Germany.Journal of Water and Climate Change,1(1).
MLA	Gross-Wittke A.,et al."Temperature effects on bank filtration: Redox conditions and physical-chemical parameters of pore water at lake Tegel; Berlin; Germany".Journal of Water and Climate Change 1.1(2010).