drinking water production Articles
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PLAGNE, France: Elimination of turbidity and microbiological retention
Plagne, a village close to Toulouse, has acquired an autonomous drinking water production system treating threesprings called “Très Peyres”. The regular growth in population has prompted the town to think about the upgradeable character of the treatment unit. It is for this reason that Aquasource solution was ...
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MEYREUIL, France: Ecoskid–Elimination of turbidity and microbiological retention
In 1997, the Ballon drinking water production plant was equipped with an avant-garde technique that could treat the water without chemical reactants: Ultrafiltration.In 2005, as this technology had given full satisfaction, the city of Meyreuil again entrusted its plant extension to Aquasource to supply the 6,000 ...
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LAUSANNE, Switzerland: Grand Systeme–Elimination of turbidity and microbiological retention
The drinking water production plant in the town of Lutry (Vaud canton), on the edge of Leman Lake, was built in two phases (2000 and 2003). The plant supplies the city of Lausanne and the surrounding towns.Aquasource Ultrafiltration was chosen in order to integrate it in the best possible way into its environment. One final extension is possible for future ...
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MOSCOW, Russia: Grand Systeme–Elimination of turbidity and microbiological retention
Moscow is one of the largest Ultrafiltration plants in the world.This drinking water production plant in the southwest of Moscow was designed to supply a million people starting on January 1st, 2007.This unit is equipped with 1344 modules so that it can produce up to 275,000 m3 of ultrafiltered water ...
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Eutrophication linked to disinfection - by products problem in drinking water production
Eutrophication is one of those big problems that cause water quality degradation. Presence of cyanobacterial toxins and climate change impacts would degrade water quality towards the worst. In regard to the mentioned problems, disinfection-by products strongly act as a consequence of drinking water production. Continue reading the full ...
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SEMUR EN AUXOIS, France: Skid–Elimination of turbidity, organic matter, pesticides, metals, algae, oxidation of manganese and microbiological retention
The plant built in 1980 using a traditional process had to be renovated in 2002. The Ultrafiltration by membranes combined with the Cristal® process (addition of powdered activated carbon) was chosen for this upgrade. In total, this drinking water production station is equipped with 3 skids 18 ...
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Nongfu Spring Linjiang Project - Case Study
Nongfu Spring is the former name of “Zhejiang Qiandaohu Yangshengtang Drinking Water Co., Ltd.”. Its company headquarters is located in Hangzhou, Zhejiang Province, and is the holding company of Yangshengtang. It was established on September 26, 1996. The company is a drinking water production enterprise in mainland China, with Zhejiang Qiandao Lake, Jilin Changbai Mountain, Hubei ...
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Membrane retrofit maintains safe drinking water production - Case Study
Problem The ultrafiltration (UF) membrane cartridges used in the City of Del Rio (Texas) Water Treatment Plant needed frequent fiber repairs and had reached the end of their useful life. However, replacement using the existing specified membranes was beyond the facility’s budget, forcing the city to pursue a retrofit. Most potential replacements either could not fit the existing footprint ...
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A Simple Method to Reduce Disinfection By-product Formation
The formation of disinfection byproducts (DBP) during drinking water production has long been of concern toauthorities and consumers alike. Although most disinfectants form unwanted DBPs there is particular concern withchlorine disinfection as a variety of chlorinated compounds are formed with possible adverse health effects, includingtrihalomethanes (THMs). Strategies for controlling THM ...
By Ixom
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Pilot plant trials: management of membrane concentrate
In surface water nanofiltration (NF) for drinking water production, 15 to 25% of the feed is rejected by the membranes. Two complementary approaches are investigated in order to manage concentrates. On one hand, an additional NF stage allows an increase in the yield of drinking water production from 85 to 94%. Thirty-days filtration cycles are achieved. Conductivity, natural organic matter (NOM) ...
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Incidental potable water reuse in a Catalonian basin: living downstream
A preliminary assessment of incidental potable water reuse (IPR) in the Llobregat River basin has been conducted by estimating the dilution factor of treated effluent discharges upstream of six river flow measurement sections. IPR in the Llobregat River basin is an everyday occurrence, because of the systematic discharge of treated effluents upstream of river sections used as drinking water ...
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Mechano-chemical ageing of PES/PVP ultrafiltration membranes used in drinking water production
In water treatment by microfiltration and ultrafiltration, a major concern is the integrity loss or failure of membrane induced by onsite operations, potentially leading to permeate water contamination. This study aims to provide a better understanding of the phenomena responsible for membrane damage by analyzing its causes and effects. The role of sodium hypochlorite exposure conditions and ...
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Source tracking of Enterococcus moraviensis and E. haemoperoxidus
Enterococci were detected occasionally in 100 L samples of water abstracted from a shallow aquifer in a natural dune infiltration area for drinking water production. Enterococcus moraviensis was the species most frequently identified in these samples. Because there are no existing reports of faecal sources of E. moraviensis and the closely related E. hemoperoxidus, this study aimed to find ...
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Ageing and Characterization of PES Ultrafiltration Membranes Exposed to Hypochlorite
Polyethersulfone (PES) ultrafiltration (UF) hollow fibers are widely used for drinking water production. During onsite operation, backwashing (brief, high occurrence, low concentration in free chlorine: 10 ppm to 20 ppm) and chemical washing (longer, less frequent, high concentration in free chlorine: 200 ppm to 400 ppm) are applied to PES fibers to ensure their proper functioning. Impact of ...
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Nan H2O filtration Drinking Water Production – Membrane Filtration Municipality of Lac - Bouchette
Located in Lac-Saint-Jean, Quebec, Lac-Bouchette is a municipality of 1,400 inhabitants. For its supply in drinking water, the Roche Ltd Consulting Group recommended the municipality to call on H2O Innovation’s services. This, following a pilot study executed on the water of the Ouiatchouan lake that has been carried out from May till October 2003. The nanofiltration treatment system called ...
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WaterScope introduction
Focus on the algae! The 'Pitch': Harmful algae blooms (HABs) appear world-wide in increasing number due to global warming and this phenomenon comes up in places where this has not been so far. HABs are dangerous because toxins produced by algal blooms cause problems in various industries such as drinking water production, fish fanning, tourism, and the environment protection. WaterScope is an ...
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Issues of drinking water quality of small scale water services towards climate change
As climate change could impact water quantity and quality, important concerns are related to water quality degradation in small scale water services (SSWS). SSWS using surface waters resources (rivers and lakes) for drinking water production are particularly vulnerable to short term transient events due to their low adaptation capacity and their lack of support and technical knowledge compared to ...
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Characterization and comparison of iron oxyhydroxide precipitates from biotic and abiotic groundwater treatments
Removal of iron is an important step in groundwater treatment for drinking water production. It is performed to prevent organoleptic issues and clogging in water supply systems. Iron can be eliminated with a purely physico-chemical (abiotic) method or biotically with the help of iron-oxidizing bacteria (FeOB). Each of the purification methods requires different operating conditions and ...
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Intrinsic properties and performances of NF270 and XLE membranes for water filtration
Nanofiltration and low pressure reverse osmosis membranes are well-known in the field of drinking water production and their separation performance is very strongly related to their intrinsic characteristics. The membrane characterization (scanning electron microscopy (SEM), atomic force microscopy (AFM), zeta potential …) was realized on a NF270 and extra-low energy (XLE) membrane. SEM results ...
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Biodegradation of natural organic matter in long-term, continuous-flow experiments simulating artificial ground water recharge for drinking water production
The role of biodegradation in the attenuation of natural organic matter (NOM) was investigated in long-term experiments that simulate artificial ground water recharge (AGR) for drinking water production. Lake water containing 5.8 mg L–1 total organic carbon (TOC) was continuously fed into an 18.5-m-long sand column. During the 941 d of operation, on average 76 and 81% of TOC was removed within ...
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