Preparation and characterization of a high flux nanofiltration polyamide hollow fiber TFC membrane for drinking water production

2020 ◽  
Vol 193 ◽  
pp. 177-188
Author(s):  
Wan Su ◽  
Yufeng Zhang ◽  
Wenjuan Zhang ◽  
Shuting Xie ◽  
Xiaobo Sun ◽  
...  
Keyword(s):  
Drinking Water ◽  
Hollow Fiber ◽  
High Flux ◽  
Water Production ◽  
Drinking Water Production ◽  
Tfc Membrane

314 Establishment of hollow fiber membrane filtration system for drinking water production (II)

2005 ◽  
Vol 2005.15 (0) ◽  
pp. 262-265
Author(s):  
Toshifumi KURAHASHI ◽  
Toshitsugu KASHIIDE ◽  
Tsuyoshi HIGASHIJIMA ◽  
Keizo MURATA ◽  
Yuji YAMADA ◽  
...  
Keyword(s):  
Drinking Water ◽  
Hollow Fiber ◽  
Membrane Filtration ◽  
Hollow Fiber Membrane ◽  
Water Production ◽  
Fiber Membrane ◽  
Filtration System ◽  
Drinking Water Production

High flux ultrafiltration membrane for drinking water production

2001 ◽  
Vol 1 (5-6) ◽  
pp. 177-184 ◽  
Author(s):  
S. Nakatsuka ◽  
T. Ase ◽  
T. Miyano
Keyword(s):  
Drinking Water ◽  
Hollow Fibre ◽  
Asymmetric Structure ◽  
Dense Layer ◽  
High Flux ◽  
Water Production ◽  
Hollow Fibre Membrane ◽  
Fibre Membrane ◽  
Drinking Water Production

The high flux ultrafiltration hollow fibre membrane (HFCA) for drinking water production was developed and the membrane performance was evaluated by long-term ultrafiltration testing with river water. The hollow fibre membrane was made of cellulose acetate (CA) and has a highly porous structure with a very thin dense layer on the internal surface of the membrane. The ultrafiltration flux of the HFCA membrane was compared with that of the conventional CA membrane without such a highly asymmetric structure. The flux for the HFCA membrane was almost twice as high as that for the conventional one. The performance of the conventional CA membrane was also compared with that of membranes with different materials, namely polyethersulfone (PES) and polyacrylonitrile (PAN). The result showed much higher flux for the CA membrane, indicating that the fouling can be effectively controlled by using the membrane with hydrophilic and negatively charged properties. It was shown that the high flux for the HFCA membrane was due to characteristics of both membrane material and porous membrane structure. The pilot plant testing was carried out to examine the performance in the long term operation, and confirmed the high performance of the HFCA membrane for the application of drinking water treatment.

Establishment of hollow fiber membrane filtration system for drinking water production

2004 ◽  
Vol 2004.14 (0) ◽  
pp. 300-302
Author(s):  
Toshifumi KURAHASHI ◽  
Hideyoshi MATSUBARA ◽  
Tsuyoshi HIGASHIJIMA ◽  
Keizo MURATA ◽  
Yuuji YAMADA ◽  
...  
Keyword(s):  
Drinking Water ◽  
Hollow Fiber ◽  
Membrane Filtration ◽  
Hollow Fiber Membrane ◽  
Water Production ◽  
Fiber Membrane ◽  
Filtration System ◽  
Drinking Water Production

Molecular characterization of microbial populations in groundwater sources and sand filters for drinking water production

2009 ◽  
Vol 43 (1) ◽  
pp. 182-194 ◽  
Author(s):  
W.W.J.M. de Vet ◽  
I.J.T. Dinkla ◽  
G. Muyzer ◽  
L.C. Rietveld ◽  
M.C.M. van Loosdrecht
Keyword(s):  
Drinking Water ◽  
Molecular Characterization ◽  
Microbial Populations ◽  
Water Production ◽  
Sand Filters ◽  
Drinking Water Production

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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