scholarly journals Cytogenotoxicity screening of source water, wastewater and treated water of drinking water treatment plants using two in vivo test systems: Allium cepa root based and Nile tilapia erythrocyte based tests

2017 ◽  
Vol 108 ◽  
pp. 320-329 ◽  
Author(s):  
Chamini K. Hemachandra ◽  
Asoka Pathiratne
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Allium Cepa ◽  
Nile Tilapia ◽  
Drinking Water Treatment ◽  
Source Water ◽  
In Vivo Test ◽  
Test Systems ◽  
Water Treatment Plants

Using surrogate data to assess risks associated with microbial peak events in source water at drinking water treatment plants

2021 ◽  
pp. 117296
Author(s):  
Émile Sylvestre ◽  
Michèle Prévost ◽  
Jean-Baptiste Burnet ◽  
Patrick Smeets ◽  
Gertjan Medema ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Surrogate Data ◽  
Source Water ◽  
Water Treatment Plants

scholarly journals Nine-Year Study of the Occurrence of Culturable Viruses in Source Water for Two Drinking Water Treatment Plants and the Influent and Effluent of a Wastewater Treatment Plant in Milwaukee, Wisconsin (August 1994 through July 2003)

2005 ◽  
Vol 71 (2) ◽  
pp. 1042-1050 ◽  
Author(s):  
Gerald Sedmak ◽  
David Bina ◽  
Jeffrey MacDonald ◽  
Lon Couillard
Keyword(s):  
Drinking Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plant ◽  
Environmental Protection Agency ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Source Water ◽  
High Concentration ◽  
Water Treatment Plants

ABSTRACT Reoviruses, enteroviruses, and adenoviruses were quantified by culture for various ambient waters in the Milwaukee area. From August 1994 through July 2003, the influent and effluent of a local wastewater treatment plant (WWTP) were tested monthly by a modified U.S. Environmental Protection Agency Information Collection Rule (ICR) organic flocculation cell culture procedure for the detection of culturable viruses. Modification of the ICR procedure included using Caco-2, RD, and HEp-2 cells in addition to BGM cells. Lake Michigan source water for two local drinking water treatment plants (DWTPs) was also tested monthly for culturable viruses by passing 200 liters of source water through a filter and culturing a concentrate representing 100 liters of source water. Reoviruses, enteroviruses, and adenoviruses were detected frequently (105 of 107 samples) and, at times, in high concentration in WWTP influent but were detected less frequently (32 of 107 samples) in plant effluent and at much lower concentrations. Eighteen of 204 samples (8.8%) of source waters for the two DWTPs were positive for virus and exclusively positive for reoviruses at relatively low titers. Both enteroviruses and reoviruses were detected in WWTP influent, most frequently during the second half of the year.

scholarly journals Investigation on the fate of quinolone antibiotics in three drinking water treatment plants of China

2021 ◽  
Author(s):  
Zhiquan Liu ◽  
Yongpeng Xu ◽  
Yuan Wang ◽  
Fuyi Cui
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Tap Water ◽  
Drinking Water Treatment ◽  
Chemical Oxidation ◽  
Source Water ◽  
Water Treatment Plants ◽  
Detection Frequency ◽  
Quinolone Antibiotics ◽  
Carbon Filtration

Abstract Quinolone (QN) antibiotics are widely used all over the world and have been frequently detected in source water, but the occurrence in tap water and the treatment efficiencies of QNs by drinking-water treatment plants (DWTPs) were rarely reported. In the present study, the occurrence and distribution of six representative QNs in three urban DWTPs of China were investigated. The results showed that the concentrations of total QNs in the three source waters ranged from 26.4 ng/L to 313.8 ng/L and all of the six QNs were detectable with a detection frequency of 100% (4.6 to 121.7 ng/L). Enrofloxacin (ENR) and ofloxacin (OFL) were the dominant species of QNs and accounted for 40.1% to 79.5% of the total QNs. After the treatments, there were still considerable QNs in the finished water (total amounts of 74.9 ng/L to 148.4 ng/L). The adsorbed QNs could be readily treated with the removal of turbidity by DWTPs, but only a part of the dissolved QNs (13.6% to 68.5%) can be removed. This implies that the dissolved QNs were more hazardous in the source water. Pre-oxidation and disinfection could remove 15.8 ± 8.3% and 16.9 ± 10.8% of dissolved QNs, respectively, depending on the chemical structure of QNs and the types of oxidant. Chemical oxidation was more efficient than coagulation-sedimentation and filtration for the treatment of dissolved QNs. Ozone-granular activated carbon filtration may fail to remove dissolved QNs in the actual DWTPs, because of the insufficient dosage of oxidant and the competition effect of natural organic matter.

Application of in vivo measurements for the management of cyanobacteria breakthrough into drinking water treatment plants

2014 ◽  
Vol 16 (2) ◽  
pp. 313 ◽  
Author(s):  
Arash Zamyadi ◽  
Sarah Dorner ◽  
Mouhamed Ndong ◽  
Donald Ellis ◽  
Anouka Bolduc ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
In Vivo Measurements ◽  
Water Treatment Plants

Occurrence of CX3R-Type Disinfection Byproducts in Drinking Water Treatment Plants Using DON-Rich Source Water

2020 ◽  
Author(s):  
Ruihua Zhang ◽  
Feifei Wang ◽  
Chao Fang ◽  
Xinmiao Luan ◽  
Xu Yang ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Disinfection Byproducts ◽  
Rich Source ◽  
Source Water ◽  
Water Treatment Plants

Characteristics of organic pollutants in source water and purification evaluations in drinking water treatment plants

2020 ◽  
Vol 733 ◽  
pp. 139277
Author(s):  
Sainan Sun ◽  
Tingting Jiang ◽  
Yujin Lin ◽  
Jiaxiu Song ◽  
Yuanyuan Zheng ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Organic Pollutants ◽  
Drinking Water Treatment ◽  
Source Water ◽  
Water Treatment Plants

scholarly journals Vulnerability of Quebec drinking-water treatment plants to cyanotoxins in a climate change context

2009 ◽  
Vol 8 (3) ◽  
pp. 455-465 ◽  
Author(s):  
Annie Carrière ◽  
Michèle Prévost ◽  
Arash Zamyadi ◽  
Pierre Chevalier ◽  
Benoit Barbeau
Keyword(s):  
Climate Change ◽  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Current Guideline ◽  
Source Water ◽  
Water Industry ◽  
Efficient Treatment ◽  
Water Treatment Plants ◽  
Change Context

Cyanobacteria are a growing concern in the province of Quebec due to recent highly publicised bloom episodes. The health risk associated with the consumption of drinking water coming from contaminated sources was unknown. A study was undertaken to evaluate treatment plants' capacity to treat cyanotoxins below the maximum recommended concentrations of 1.5 μg/L microcystin-LR (MC-LR) and the provisional concentration of 3.7 μg/L anatoxin-a, respectively. The results showed that close to 80% of the water treatment plants are presently able to treat the maximum historical concentration measured in Quebec (5.35 μg/L MC-LR equ.). An increase, due to climate change or other factors, would not represent a serious threat because chlorine, the most popular disinfectant, is effective in treating MC-LR under standard disinfection conditions. The highest concentration of anatoxin-a (2.3 μg/L) measured in natural water thus far in source water is below the current guideline for treated waters. However, higher concentrations of anatoxin-a would represent a significant challenge for the water industry as chlorine is not an efficient treatment option. The use of ozone, potassium permanganate or powder activated carbon would have to be considered.

Drinking Water Surveillance Program in the St. Clair-Detroit River Area 1985/86

1986 ◽  
Vol 21 (3) ◽  
pp. 447-459 ◽  
Author(s):  
K.J. Roberts ◽  
R.B. Hunsinger ◽  
A.H. Vajdic
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Surveillance Program ◽  
Sampling Protocol ◽  
Detroit River ◽  
Water Treatment Plants

Abstract The Drinking Water Surveillance Program (DWSP), developed by the Ontario Ministry of the Environment, is an assessment project based on standardized analytical and sampling protocol. This program was recently instituted in response to a series of contaminant occurrences in the St. Clair-Detroit River area of Southwestern Ontario. This paper outlines the details and goals of the program and provides information concerning micro-contaminants in drinking water at seven drinking water treatment plants in Southwestern Ontario.

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