Determination of pressure and velocity fields in ultrafiltration membrane modules used in drinking water production

2013 ◽  
Vol 431 ◽  
pp. 221-232 ◽  
Author(s):  
G. Cano ◽  
P. Steinle ◽  
J.V. Daurelle ◽  
Y. Wyart ◽  
K. Glucina ◽  
...  
Keyword(s):  
Drinking Water ◽  
Velocity Fields ◽  
Ultrafiltration Membrane ◽  
Water Production ◽  
Drinking Water Production ◽  
Membrane Modules

Methodology for Determining the Presence and Origin of Organic Micropollutants

1982 ◽  
Vol 14 (12) ◽  
pp. 127-142 ◽  
Author(s):  
Alain Guiraud ◽  
Joseph Larnicol
Keyword(s):  
Drinking Water ◽  
Liquid Chromatography ◽  
Mass Spectra ◽  
Treatment Process ◽  
Water Production ◽  
Organic Micropollutants ◽  
Pragmatic Approach ◽  
Physico Chemical ◽  
Drinking Water Production

The article describes the approach taken by the Water Authority for the Paris Suburbs, the Compagnie Générale des Eaux and the Seine-Normandie River Basin Agency for the determination of organic micropollutants in the Oise River. The objective of the very pragmatic approach outlined is to locate the origin of possible micropollutants in the Oise water which may cause problems during treatment, distribution or consumption of the drinking water produced at the Méry-sur-Oise plant, whose treatment combines in an original way the whole range of existing processes, both the physico-chemical and the biological. The conventional method of searching for organic micropollutants consists of carrying out a series of analyses in a medium to identify a certain number of undesirable substances and of following their development in the stream. The existence of a drinking water production process, that is, a line of treatment stages, distracts from the interest in testing for a number of micropollutants, since they are removed at various stages of the treatment process. Nevertheless, the protection of reactors and, in particular, of biological reactors, requires that certain micropollutants be eliminated even before the beginning of the treatment sequence. And, among the micropollutants which might possibly enter the plant, those which should be looked at are those which will entail baneful effects for consumption, it being understood that drinking water standards are respected in all circumstances. The analytical method used is gas or liquid chromatography; where identification is essential, as in the case of suspected products, a combination of mass spectrometry and liquid chromatography is used. The notion of a chromatogram or mass spectra bank is essential. The assumption underlying the method's validity is that the discharge(s) likely to contain in large part the substances creating problems is that which usually contains them in small part. Although available experience is still limited, there are good reasons to believe that this method can improve the identification and above all the elimination of the sources of “problematic” micropollutants for the modern treatment of surface water intended for the production of drinking water.

Arsenate removal from contaminated water by a highly adsorptive nanocomposite ultrafiltration membrane

2015 ◽  
Vol 39 (11) ◽  
pp. 8263-8272 ◽  
Author(s):  
Rasoul Jamshidi Gohari ◽  
Woei Jye Lau ◽  
Elnaz Halakoo ◽  
Ahmad Fauzi Ismail ◽  
Fatemeh Korminouri ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Sources ◽  
Ultrafiltration Membrane ◽  
Contaminated Water ◽  
Water Production ◽  
Drinking Water Production

This novel adsorptive nanocomposite ultrafiltration membrane is effective in removing arsenate (As(v)) from water sources for drinking water production.

Effect of concentration on virus removal for ultrafiltration membrane in drinking water production

2021 ◽  
pp. 119417
Author(s):  
N. Jacquet ◽  
S. Wurtzer ◽  
G. Darracq ◽  
Y. Wyart ◽  
L. Moulin ◽  
...  
Keyword(s):  
Drinking Water ◽  
Ultrafiltration Membrane ◽  
Water Production ◽  
Virus Removal ◽  
Drinking Water Production

scholarly journals Determination of Pressure and Velocity in a Dead–end Inside–out Membrane Module used in Drinking Water Production

2012 ◽  
Vol 44 ◽  
pp. 229-232
Author(s):  
G. Cano ◽  
Y. Wyart ◽  
J.V. Daurelle ◽  
K. Glucina ◽  
D. Bourdiol ◽  
...  
Keyword(s):  
Drinking Water ◽  
Membrane Module ◽  
Water Production ◽  
Dead End ◽  
Drinking Water Production ◽  
Inside Out

Coagulation/flocculation/ultrafiltration for natural organic matter removal in drinking water production

2004 ◽  
Vol 4 (5-6) ◽  
pp. 215-222 ◽  
Author(s):  
A.R. Costa ◽  
M.N. de Pinho
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Natural Organic Matter ◽  
Membrane Fouling ◽  
Membrane Filtration ◽  
Membrane Surface ◽  
Water Production ◽  
Cellulose Acetate Membranes ◽  
Wide Range ◽  
Drinking Water Production

Membrane fouling by natural organic matter (NOM), namely by humic substances (HS), is a major problem in water treatment for drinking water production using membrane processes. Membrane fouling is dependent on membrane morphology like pore size and on water characteristics namely NOM nature. This work addresses the evaluation of the efficiency of ultrafiltration (UF) and Coagulation/Flocculation/UF performance in terms of permeation fluxes and HS removal, of the water from Tagus River (Valada). The operation of coagulation with chitosan was evaluated as a pretreatment for minimization of membrane fouling. UF experiments were carried out in flat cells of 13.2×10−4 m2 of membrane surface area and at transmembrane pressures from 1 to 4 bar. Five cellulose acetate membranes were laboratory made to cover a wide range of molecular weight cut-off (MWCO): 2,300, 11,000, 28,000, 60,000 and 75,000 Da. Severe fouling is observed for the membranes with the highest cut-off. In the permeation experiments of raw water, coagulation prior to membrane filtration led to a significant improvement of the permeation performance of the membranes with the highest MWCO due to the particles and colloidal matter removal.

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.

System Analysis of Source Water Indicators at Drinking Water Production in the Central Water Supply System

2018 ◽  
Vol 16 (2) ◽  
pp. 84
Author(s):  
G A Blagodatsky ◽  
A A Bass ◽  
M M Gorokhov ◽  
D S Ponomarev
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
System Analysis ◽  
Supply System ◽  
Water Supply System ◽  
Source Water ◽  
Water Production ◽  
Drinking Water Production

Работа посвящена системному анализу данных показателей исходной воды при производстве питьевой воды в системе центрального водоснабжения крупного населенного пункта. На сегодняшний день на фоне увеличивающегося негативного антропогенного воздействия на окружающую среду наблюдается ухудшение состояния многих источников питьевого водоснабжения в широком спектре показателей, в частности, таких как органолептические свойства воды. Как следствие, возникает проблема и для питьевой воды. В работе приводится процесс подготовки данных о параметрах исходной воды, забираемой из водохранилища, которые ежемесячно (с 2002 по 2014 год) учитывались на предприятии при дезодорации воды. Приведенные параметры оказывают существенное влияние на органолептические свойства конечной воды. Подготовка данных для анализа проводится методом главных компонент К. Пирсона. Данные, полученные в пространстве R9, переводятся в пространство меньшей размерности R3. Понижение размерности позволяет снизить автокорреляцию между компонентами. Отбор компонент в пространство R3 проводится по правилу Парето. В пространстве R3 методом сферической кластеризации данных «Форель» с постоянным радиусом группировки проводится кластеризация. Приводится пошаговое визуальное представление алгоритма кластеризации в пространстве R3. В работе показано, что в данных показателях качества исходной воды имеются кластеры. Проводится корреляционно-регрессионный анализ данных, представленных в главных компонентах. Строятся регрессионные зависимости показателей органолептических свойств от главных компонент из пространства R3.

The WaterProtect governance guide: Experiences from seven agricultural and drinking water production catchments across Europe

2021 ◽  
Vol 761 ◽  
pp. 143867
Author(s):  
Els Belmans ◽  
Lieve Borremans ◽  
Lone Søderkvist Kristensen ◽  
Nicoleta Alina Suciu ◽  
Eva Kerselaers
Keyword(s):  
Drinking Water ◽  
Water Production ◽  
Drinking Water Production
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