MS2 removal from high NOM content surface water by coagulation - ceramic microfiltration, for potable water production

AIChE Journal ◽  
2011 ◽  
Vol 58 (7) ◽  
pp. 2270-2281 ◽  
Author(s):  
Thomas Meyn ◽  
Tor Ove Leiknes ◽  
Anne König
Keyword(s):  
Surface Water ◽  
Potable Water ◽  
Water Production

Potable water production from pesticide contaminated surface water—A membrane based approach

Desalination ◽  
2007 ◽  
Vol 204 (1-3) ◽  
pp. 368-373 ◽  
Author(s):  
Baisali Sarkar ◽  
N. Venkateshwarlu ◽  
R. Nageswara Rao ◽  
Chiranjib Bhattacharjee ◽  
Vijay Kale
Keyword(s):  
Surface Water ◽  
Potable Water ◽  
Water Production

scholarly journals Removal of model viruses, E. coli and Cryptosporidium oocysts from surface water by zirconium and chitosan coagulants

2017 ◽  
Vol 15 (5) ◽  
pp. 695-705 ◽  
Author(s):  
Ekaterina Christensen ◽  
Vegard Nilsen ◽  
Tor Håkonsen ◽  
Arve Heistad ◽  
Christophe Gantzer ◽  
...  
Keyword(s):  
Surface Water ◽  
Salmonella Typhimurium ◽  
Potable Water ◽  
Water Production ◽  
E Coli ◽  
Cryptosporidium Oocysts ◽  
Cryptosporidium Parvum Oocysts ◽  
Filter Bed ◽  
First Time ◽  
Polyaluminium Chloride

The present work evaluates the effect of contact filtration, preceded by coagulation with zirconium (Zr) and chitosan coagulants, on model microorganisms and waterborne pathogens. River water intended for potable water production was spiked with MS2 and Salmonella Typhimurium 28B bacteriophages, Escherichia coli, and Cryptosporidium parvum oocysts prior to coagulation. The hygienic performance demonstrated by Zr comprised 3.0–4.0 log10 removal of viruses and 5.0–6.0 log10 removal of E. coli and C. parvum oocysts. Treatment with chitosan resulted in a removal of 2.5–3.0 log10 of viruses and parasites, and 4.5–5.0 log10 of bacteria. A reference coagulant, polyaluminium chloride (PACl), gave a 2.5–3.0 log10 removal of viruses and 4.5 log10 of E. coli. These results indicate that both Zr and chitosan enable adequate removal of microorganisms from surface water. The present study also attempts to assess removal rates of the selected microorganisms with regard to their size and surface properties. The isoelectric point of the Salmonella Typhimurium 28B bacteriophage is reported for the first time. The retention of the selected microorganisms in the filter bed appeared to have some correlation with their size, but the effect of the charge remained unclear.

Barcelona's water supply improvement: the brine collector of the Llobregat river

1994 ◽  
Vol 30 (10) ◽  
pp. 221-227 ◽  
Author(s):  
Jordi Martín-Alonso
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Salt Mine ◽  
Water Production ◽  
Public Work ◽  
Drinking Water Production ◽  
Llobregat River

The Llobregat is a 156 km long river, which supplies 35% of the Barcelona's drinking water needs from the Sant Joan Despí Water Treatment Plant. Since the establishment of the Salt Mine Works in the Llobregat basin in 1923, a progressive salinization of the water sources has been recorded. The operation of the Brine Collector, as a public work carried out by Aigües de Barcelona (AGBAR), started in 1989; it enabled a very significant improvement in the quality of the surface water used for drinking-water production.

Effect of Flow Configuration on Nitrifiers in Biological Activated Carbon Filters for Potable Water Production

2020 ◽  
Vol 54 (22) ◽  
pp. 14646-14655
Author(s):  
Min Rui ◽  
Haoshen Chen ◽  
Yinyin Ye ◽  
Huiping Deng ◽  
Hong Wang
Keyword(s):  
Activated Carbon ◽  
Potable Water ◽  
Water Production ◽  
Biological Activated Carbon ◽  
Flow Configuration

Use of membrane technology for potable water production

Desalination ◽  
2004 ◽  
Vol 170 (2) ◽  
pp. 105-112 ◽  
Author(s):  
M. Arora ◽  
R.C. Maheshwari ◽  
S.K. Jain ◽  
A. Gupta
Keyword(s):  
Potable Water ◽  
Membrane Technology ◽  
Water Production

scholarly journals Microbial biotechnologies for potable water production

2017 ◽  
Vol 10 (5) ◽  
pp. 1094-1097 ◽  
Author(s):  
S. Jane Fowler ◽  
Barth F. Smets
Keyword(s):  
Potable Water ◽  
Water Production

Dissolved air flotation in drinking water production

2001 ◽  
Vol 43 (8) ◽  
pp. 9-18 ◽  
Author(s):  
T. Schofield
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Potable Water ◽  
Water Production ◽  
Process Technology ◽  
Dissolved Air Flotation ◽  
Drinking Water Production ◽  
Air Flotation ◽  
Potable Water Treatment ◽  
Dissolved Air

Dissolved Air Flotation (DAF) has become increasingly important in the field of potable water treatment, as a preferred option for treating upland and stored lowland waters. This paper outlines the development of dissolved air flotation (DAF) in potable water treatment, the benefits and disadvantages and the recent advances that has taken the process technology from an art to a science.

Legionella and Public Water Supplies

1988 ◽  
Vol 20 (11-12) ◽  
pp. 5-10 ◽  
Author(s):  
J. S. Colbourne ◽  
P. J. Dennis ◽  
R. M. Trew ◽  
C. Berry ◽  
G. Vesey
Keyword(s):  
Surface Water ◽  
Heat Shock ◽  
Distribution Systems ◽  
Potable Water ◽  
Water Sources ◽  
Water Supplies ◽  
Indirect Immunofluorescent Assay ◽  
Water Mains ◽  
Legionnaires Disease ◽  
Indirect Immunofluorescent

A survey for legionella in public water supplies in England failed to detect culturable L.pneumophila in all but samples from taps in buildings; however, the organism was detected in underground and surface water sources and distribution systems using an indirect immunofluorescent assay (IFA) to L.pneumophila serogroup 1. Culturability was related to water temperatures above 20°C. In water mains L.pneumophila was associated with biofilms or sediment. Non-culturable L.pneumophila detected in potable waters by IFA were recovered by heat shock experiments demonstrating their viability. Although the strain found in potable water is rarely asociated with disease, monoclonal expression, a virulence marker, was altered by heat shock. These findings have implications for the prevention of legionellosis and may explain the sporadic nature of legionnaires disease in the community.

Screening of pharmaceuticals and endocrine disrupting compounds in water supplies of Cyprus

2010 ◽  
Vol 62 (11) ◽  
pp. 2720-2728 ◽  
Author(s):  
Konstantinos C. Makris ◽  
Shane A. Snyder
Keyword(s):  
Surface Water ◽  
Bisphenol A ◽  
Water Samples ◽  
Potable Water ◽  
Endocrine Disrupting Compounds ◽  
Water Supplies ◽  
Temporal And Spatial Distribution ◽  
Treated Effluent ◽  
Endocrine Disrupting ◽  
Finished Surface

Cyprus is currently the leading country in antibiotic consumption among all European Union member countries and is likely to have a high consumption of pharmaceuticals overall. This reconnaissance type of project sought to investigate the occurrence of 16 pharmaceuticals, six known or suspected endocrine disrupting compounds (EDCs), two flame retardants, one insect repellant, and one fragrance for the first time in water supplies of Cyprus. Groundwater samples from sites that were located beneath farms scattered around Cyprus, wastewater influent and tertiary-treated effluent, raw and finished surface water, and household potable water samples were analyzed using liquid chromatography and tandem mass spectrometry. Most of the tested compounds were < minimum reporting limit, except for ibuprofen (mean of 1.4 ng L−1) and bisphenol A (mean of 50 ng L−1), which were detected in more than one out of the five groundwater sampling sites. Certain compounds were found in large concentrations in the wastewater influent (caffeine 82,000 ng L−1, sulfamethoxazole 240 ng L−1, ibuprofen 4,300 ng L−1, and triclosan 480 ng L−1). However, several pharmaceuticals and EDCs were detected in the tertiary-treated effluent (recycled water). For the raw and finished surface water, and potable water samples, ibuprofen was detected, whereas, bisphenol-A was measured in only potable water. Overall, with a few notable exceptions, source, finished and potable water had rare detection or low concentration of target compounds, but further research is needed to elucidate the temporal and spatial distribution of the detected emerging contaminants along with the characterization of the related public health risk.

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