Organic micropollutant removal from wastewater effluent-impacted drinking water sources during bank filtration and artificial recharge

Title
Organic micropollutant removal from wastewater effluent-impacted drinking water sources during bank filtration and artificial recharge
Authors
맹승규임마뉴엘 아메다샤마에미Gesche Gru¨tzmacher
Keywords
Artificial recharge; Bank filtration; Organic micropollutants; redox conditions
Issue Date
2010-07
Publisher
Water research
Citation
VOL 44, NO 14, 4003-4014
Abstract
Natural treatment systems such as bank filtration (BF) and artificial recharge (via an infiltration basin) are a robust barrier for many organic micropollutants (OMPs) and may represent a low-cost alternative compared to advanced drinking water treatment systems. This study analyzes a comprehensive database of OMPs at BF and artificial recharge (AR) sites located near Lake Tegel in Berlin (Germany). The focus of the study was on the derivation of correlations between the removal efficiencies of OMPs and key factors influencing the performance of BF and AR. At the BF site, shallow monitoring wells located close to the Lake Tegel source exhibited oxic conditions followed by prolonged anoxic conditions in deep monitoring wells and a production well. At the AR site, oxic conditions prevailed from the recharge pond along monitoring wells to the production well. Long residence times of up to 4.5 months at the BF site reduced the temperature variation during soil passage between summerand winter. The temperature variations were greater at theARsite as a consequence of shorter residence times. Deep monitoring wells and the production well located at the BF site were under the influence of ambient groundwater and old bank filtrate (up to several years of age). Thus, it is important to account for mixing with native groundwater and other sources (e.g., old bank filtrate) when estimating the performance of BF with respect to removal of OMPs. Principal component analysis (PCA) was used to investigate correlations between OMP removals and hydrogeochemical conditions with spatial and temporal parameters (e.g., well distance, residence time and depth) from both sites. Principal component-1 (PC1) embodied redox conditions (oxidation-reduction potential anddissolved oxygen), and principal component-2 (PC2) embodied degradation potential (e.g., total organic carbon and dissolved organic carbon) with the calcium ca
URI
http://pubs.kist.re.kr/handle/201004/37770
ISSN
0043-1354
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KIST Publication > Article
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