The article presents analyses of long-term water quality data from the Warta River between 1958 and 2016. A clear increasing trend in nitrate concentrations was observed to early 1990s. This mainly related use fertilizers Poland this period. Then, after 1990s, a slow decreasing improvements sewage management more rational fertilizer political economic changes Poland. influence hydrological droughts on also investigated. Sharp increases concentration surface were accumulation contaminants...

Abstract Drinking water wells on a riverbank filtration sites are exposed to contamination from farmlands (like pesticides) that had migrated the contaminated river. In this study, pesticide of Warta River and at Mosina-Krajkowo well field (Poland) were examined during annual cycle. Among 164 pesticides analysed, 25 identified. The highest concentrations occurred in river decreased along flow path wells. Only most persistent substances detected farthest points. During seasonal changes...

This paper describes the origin of groundwater chemistry in regional aquifer located Wielkopolska region western Poland. Factor analysis was used for identification geochemical processes that influence chemistry. Two groups were identified: anthropogenic (i.e., caused by contamination) and geogenic natural processes). Based on a background variations chemistry, effect upward flow from deep part system identified. The boron concentrations isotope data allowed zones relatively old groundwater....

Studies on the presence of pharmaceuticals in water were carried out riverbank filtration site, Krajkowo–Poznań (Poland). A preliminary investigation conducted 3 sampling points showed both surface and bank filtrate. Based above, an extended analysis was made July, August October 2018 included wells located at a different distance (5–250 m) travel time (1–150 days) from source (Warta River). Firstly, 75 compounds (antibiotics, anti-inflammatory analgesic drugs, psychotropic x-ray agents...

The aim of this article is to evaluate the removal natural organic matter and micropollutants at a riverbank filtration site in Krajkowo, Poland, its dependence on distance between wells river related travel times. A high reduction dissolved carbon (40–42%), chemical oxygen demand (65–70%), colour (42–47%) was found 60–80 m from river. lower (26%), (42%), (33%) observed horizontal well. At greater distances river, pharmaceutical residues pesticides range 52–66% 55–66%, respectively. highest...

The present study examines the behaviour of nitrate in recharge zone a regional Quaternary flow system. presence contaminated groundwater with high content shallow part system was documented. Tritium analyses confirmed that these contaminants can migrate downward. A downward gradient exists area, extending into regions extraction. In unconfined system, which is most vulnerable to pollution, concentration found occur at great depth. However, denitrification processes limit migration. As...

Abstract River bank filtration systems are widely used for water supply purposes. Using these systems, the movement of over short distances between river bottom and extraction wells can decrease concentrations some contaminants. Such especially important removal specific micro-pollutants that seasonally appear in water. In this article, pesticides migration at Krajkowo well field is analysed based on different schemes. The extracted by two groups (one located 60–80 m from Warta River, second...

This study presents the behavior of nitrate in recharge zone Tursko well-field (south Wielkopolska, Poland). The presence a contaminant plume derived from land drainage systems was documented. contamination is reflected mainly by high concentration (>80 mg/l). It documented that migrates aquifer along flow path source to well-field. factor retards migration bacterial denitrification. As result denitrification, decreases systematically lines, but other parameters—products denitrification...

Abstract River bank filtration (RBF) is a system that enriches groundwater resources by induced infiltration of river water to an aquifer. Problematic during operation RBF systems the deterioration effectiveness caused bed clogging. This situation was observed in Krajkowo well field which supplies fresh city Poznań (Poland) and after long hydrological drought between years 1989 1992. The present note discusses results specific hydrogeological research included drilling net boreholes depth 10...

The studied recharge zone of regionally extended Quaternary aquifers - Lwówek region (Wielkpolska, Poland) is located in a where are the principal source drinking water. A visible water quality deterioration trend was observed, manifested mainly by increase nitrate concentration. main objective presented study to examine groundwater flow patterns and vertical difference chemistry using multicomponent chemical tracers approach isotopic compositions (stable isotopes, tritium radiocarbon). This...

Poland, Warta River catchment. The study aimed to explain the reasons for spatial variability in chloride concentrations at Mosina-Krajkowo riverbank filtration (RBF) site located along river. This is attributed RBF's different intensity river sections, related, among others, clogging development. RBF effectiveness was studied using groundwater flow modelling by: examining water balance zones established on hydrogeological setting and concentrations; travel time of bankfiltrate...

Managed aquifer recharge is gaining in importance worldwide. As there not much information on bank filtration (BF) sites Eastern Europe, a survey of geohydraulic conditions and post-treatment schemes carried out. Such will make it possible to assess hydraulic the region commonly required post-treatment. Data were collected from publications, archival documentations, maps as well through direct communication with administrators relevant water companies. result, summary data 71 BF or...

This article presents the analysis of temporal changes in water chemistry a semi-confined aquifer (Wielkopolska Buried Valley aquifer, Poland) during one decade exploitation. It is shown that groundwater contamination, as documented previous work, still persists and has lead to steady quality deterioration. The most intensive due contamination are observed regions recognized earlier vulnerable parts aquifer. influence effective despite implementation protection activities. travails confined...

Abstract In the paper, a comparison of efficiency riverbank treatments is outlined for Krajkowo well field, where different methods water abstraction are used. The extracted from 29 vertical wells that located at distance 60–80 m channel River Warta and horizontal with radial drains 5 below bottom river. results two-year water-quality investigation indicate quality in both types system influenced by river water. observed closely similar to water, concentrations sulphates, nitrates...

Pharmaceutical compounds were investigated in river and riverbank filtration (RBF) water at the Mosina-Krajkowo site (Poland), 6 sampling campaigns between November 2019 June 2020. All of ten pharmaceutical tested for detected water. Carbamazepine, fluconazole, tramadol, sulphamethoxazole sulphapyridine most frequently found, highest concentrations being observed surface There was a reduction their levels horizontal well (HW) with drains located below bottom, averaging 17%. Significantly...

W 2018 r. na ujęciu infiltracji brzegowej w Krajkowie wykonano oznaczenia farmaceutyków wodach rzecznych i infiltracyjnych. Przeprowadzono trzy serie badań: rzece Warcie, piezometrach studniach usytuowanych różnych odległościach od rzeki (38–250 m) oraz studni promienistej z drenami zlokalizowanymi 5 m pod dnem rzeki. Łącznie analizie poddano 75 substancji, tym antybiotyki, leki przeciwbólowe, przeciwzapalne, psychotropowe, β-blokery środki kontrastowe promieniowania X. Kilka spośród...

The article identifies the effects of human activity on groundwater chemistry in regional aquifer system located Wielkopolska region (western Poland). It was documented using statistical methods, that main process influencing is connected to contamination. impact contamination evident regions without sewers and where aquitard relative thin. Chloride sulphatewere found most influenced by pollution from surface sources. Total hardness also sensitive, but its behavior controlled geogenic...