scholarly journals Evaluation of reverse osmosis drinking water treatment of riverbank filtrate using bioanalytical tools and non-target screening

2020 ◽  
Vol 6 (1) ◽  
pp. 103-116 ◽  
Author(s):  
Vittorio Albergamo ◽  
Beate I. Escher ◽  
Emma L. Schymanski ◽  
Rick Helmus ◽  
Milou M. L. Dingemans ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Bioactive Compounds ◽  
Drinking Water Treatment ◽  
Water Source ◽  
Drinking Water Source ◽  
Organic Micropollutants ◽  
Target Screening

Organic micropollutants that occurred in a natural drinking water source induced effects that were not detectable after reverse osmosis. Bioactive compounds were characterised by non-target screening of LC-HRMS data using open cheminformatics approaches.

scholarly journals Households Drinking Water Sources and Treatment Methods Options in a Regional Irrigation Scheme

2020 ◽  
Vol 1 (1) ◽  
pp. 10-19
Author(s):  
Emmy C. Kerich
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Water Source ◽  
Treatment Method ◽  
Water Sources ◽  
Irrigation Canal ◽  
Drinking Water Source ◽  
Irrigation Scheme ◽  
Hand Weeding

Access to safe and clean drinking water is a major challenge to the people living around Ahero Irrigation Scheme (AIS). Water sources in the area are constantly and increasingly polluted by agrochemical like pesticides from rice farming. 2, 4-Dichlorophenoxyacetic acid (2,4-D) is an herbicide extensively used in AIS. The neurotoxic, immunosuppressive, cytotoxic and hepatoxic effects of (2,4-D) have been well documented. Residues of (2,4-D) have been documented in ponds, rivers, lakes and irrigation canals. Therefore this study surveyed agrochemicals used in AIS, the drinking water source for the residents and finally water treatment option for the obtained water in the year 2013. The study established that (52.8%) of the farmers used hand-weeding and 20.8% of them use (2,4-D) for the weeds control. Results indicated that the most preferred water source was lined improved well (47.2%) followed by irrigation canal (22.2%), the least preferred was rain water with (2.8%). The most used method of water treatment was chlorination (45.8%). Spearman’s coefficient of correlation ( ) revealed that there was positive correlation between the two variables ( =0.145, 72, p=0.224>0.05). As  is positive, it implies that the type of treatment given to water depend on its source of the water. Despite the use of chlorinate with almost half of the residents, some of them (22.2%) do not treat their water at all, which may pose a risk of getting water related diseases. Furthermore, despite a proportional number of residents obtaining their water from irrigation canal, all of them do not have appropriate method/s for treating water contaminated with organic pollutants such as herbicides. There is a need to promote water appropriate drinking water treatment method/s in the study area to prevent water related diseases at the family level. Doi: 10.28991/HEF-2020-01-01-02 Full Text: PDF

scholarly journals Removal of polar organic micropollutants by pilot-scale reverse osmosis drinking water treatment

2019 ◽  
Vol 148 ◽  
pp. 535-545 ◽  
Author(s):  
Vittorio Albergamo ◽  
Bastiaan Blankert ◽  
Emile R. Cornelissen ◽  
Bas Hofs ◽  
Willem-Jan Knibbe ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Drinking Water Treatment ◽  
Pilot Scale ◽  
Organic Micropollutants

Reverse osmosis followed by activated carbon filtration for efficient removal of organic micropollutants from river bank filtrate

2010 ◽  
Vol 61 (10) ◽  
pp. 2603-2610 ◽  
Author(s):  
F. Schoonenberg Kegel ◽  
B. M. Rietman ◽  
A. R. D. Verliefde
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Organic Micropollutants ◽  
Drinking Water Treatment Plant ◽  
Carbon Filtration

Drinking water utilities in Europe are faced with a growing presence of organic micropollutants in their water sources. The aim of this research was to assess the robustness of a drinking water treatment plant equipped with reverse osmosis and subsequent activated carbon filtration for the removal of these pollutants. The total removal efficiency of 47 organic micropollutants was investigated. Results indicated that removal of most organic micropollutants was high for all membranes tested. Some selected micropollutants were less efficiently removed (e.g. the small and polar NDMA and glyphosate, and the more hydrophobic ethylbenzene and napthalene). Very high removal efficiencies for almost all organic micropollutants by the subsequent activated carbon, fed with the permeate stream of the RO element were observed except for the very small and polar NDMA and 1,4-dioxane. RO and subsequent activated carbon filtration are complementary and their combined application results in the removal of a large part of these emerging organic micropollutants. Based on these experiments it can be concluded that the robustness of a proposed treatment scheme for the drinking water treatment plant Engelse Werk is sufficiently guaranteed.

scholarly journals Technical Note: Community of bacteria attached on the PVDF MF membrane surface fouled from drinking water treatment, in Seoul, Korea

2009 ◽  
Vol 2 (2) ◽  
pp. 35-39 ◽  
Author(s):  
K. Chon ◽  
K. Chon ◽  
J.-S. Chang ◽  
H. Oh ◽  
E. Lee ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Polyvinylidene Fluoride ◽  
Membrane Surface ◽  
Drinking Water Treatment ◽  
Water Source ◽  
Rrna Gene ◽  
Drinking Water Source ◽  
Gamma Proteobacteria ◽  
Alpha Beta

Abstract. Alpha, beta, and gamma proteobacteria comprise approximately 68, 16, and 7% of all identified bacteria. In this study, bacterial communities that had fouled polyvinylidene fluoride microfiltration membranes, which are used for drinking water treatment, over an 18 month period were analyzed using the 16s rRNA gene clone library method. The alpha, beta, and gamma proteobacteria were composed of mainly Bradyrhizobium and Rhodopseudomonas, Ralstonia, and Legionella, respectively. The presence of a relatively high amount of alpha proteobacteria was due to the oligotrophic condition of the drinking water source, the Han River, tested in this specific case study. The second most prominent bacteria community was the beta proteobacteria, which are typically found in a freshwater environment. This finding supports the notion that the drinking water source was relatively clean. Analyses of the organic foulants indicated that they were most likely from extra cellular polymers and/or cell fractured chemicals from bacteria or micro-organisms, as identified using organic characterizing tools, including 3-D fluorescence excitation-emission matrix and Fourier transform IR analyses.

scholarly journals Co-Occurrence of Microcystins and Taste-and-Odor Compounds in Drinking Water Source and Their Removal in a Full-Scale Drinking Water Treatment Plant

Toxins ◽  
2018 ◽  
Vol 10 (1) ◽  
pp. 26 ◽  
Author(s):  
Lixia Shang ◽  
Muhua Feng ◽  
Xiangen Xu ◽  
Feifei Liu ◽  
Fan Ke ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Water Source ◽  
Full Scale ◽  
Drinking Water Source ◽  
Taste And Odor ◽  
Odor Compounds

The co-occurrence of cyanotoxins and taste-and-odor compounds are a growing concern for drinking water treatment plants (DWTPs) suffering cyanobacteria in water resources. The dissolved and cell-bound forms of three microcystin (MC) congeners (MC-LR, MC-RR and MC-YR) and four taste-and-odor compounds (geosmin, 2-methyl isoborneol, β-cyclocitral and β-ionone) were investigated monthly from August 2011 to July 2012 in the eastern drinking water source of Lake Chaohu. The total concentrations of microcystins and taste-and-odor compounds reached 8.86 μg/L and 250.7 ng/L, respectively. The seasonal trends of microcystins were not consistent with those of the taste-and-odor compounds, which were accompanied by dominant species Microcystis and Dolichospermum. The fate of the cyanobacteria and metabolites were determined simultaneously after the processes of coagulation/flocculation, sedimentation, filtration and chlorination in the associated full-scale DWTP. The dissolved fractions with elevated concentrations were detected after some steps and the breakthrough of cyanobacteria and metabolites were even observed in finished water. Chlorophyll-a limits at intake were established for the drinking water source based on our investigation of multiple metabolites, seasonal variations and their elimination rates in the DWTP. Not only microcystins but also taste-and-odor compounds should be taken into account to guide the management in source water and in DWTPs.

scholarly journals Technical Note: Community of bacteria attached on the PVDF MF membrane surface fouled from drinking water treatment, in Seoul, Korea

2009 ◽  
Vol 2 (1) ◽  
pp. 65-77 ◽  
Author(s):  
◽  
◽  
◽  
◽  
◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Polyvinylidene Fluoride ◽  
Membrane Surface ◽  
Drinking Water Treatment ◽  
Water Source ◽  
Rrna Gene ◽  
Drinking Water Source ◽  
Gamma Proteobacteria ◽  
Alpha Beta

Abstract. Alpha, beta, and gamma proteobacteria comprise approximate 68, 16, and 7% of all identified bacteria. In this study, bacterial communities that had fouled polyvinylidene fluoride microfiltration membranes, which are used for drinking water treatment, over an 18 month period were analyzed using the 16s rRNA gene clone library method. The alpha, beta, and gamma proteobacteria were composed of mainly Bradyrhizobium and Rhodopseudomonas, Ralstonia, and Legionella, respectively. The presence of a relatively high amount of alpha proteobacteria was due to the oligotrophic condition of the drinking water source, the Han River, tested in this specific case study. The second most prominent bacteria community was the beta proteobacteria, which are typically found in a freshwater environment. This finding supports the notion that the drinking water source was relatively clean. Analyses of the organic foulants indicated that the they were most likely from extra cellular polymers and/or cell fractured chemicals from bacteria or micro-organisms, as identified using organic characterizing tools, including 3 dimensional fluorescence excitation-emission matrix and Fourier transform IR analyses.

scholarly journals Integration of target analyses, non-target screening and effect-based monitoring to assess OMP related water quality changes in drinking water treatment

2020 ◽  
Vol 705 ◽  
pp. 135779 ◽  
Author(s):  
Andrea M. Brunner ◽  
Cheryl Bertelkamp ◽  
Milou M.L. Dingemans ◽  
Annemieke Kolkman ◽  
Bas Wols ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Quality Changes ◽  
Target Screening
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