Integrated multi-objective membrane systems for surface water treatment: pre-treatment of nanofiltration by riverbank filtration and conventional ground water treatment

Desalination ◽  
1998 ◽  
Vol 118 (1-3) ◽  
pp. 239-248 ◽  
Author(s):  
Jacques A.M. van Paassen ◽  
Joop C. Kruithof ◽  
Simon M. Bakker ◽  
Frank Schoonenberg Kegel
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Ground Water ◽  
Riverbank Filtration ◽  
Membrane Systems ◽  
Multi Objective ◽  
Surface Water Treatment ◽  
Pre Treatment

Direct capillary nanofiltration for ground water and surface water treatment

2002 ◽  
Vol 2 (5-6) ◽  
pp. 277-283 ◽  
Author(s):  
J.Q.J.C. Verberk ◽  
J. Post ◽  
W.G.J. van der Meer ◽  
J.C. van Dijk
Keyword(s):  
Surface Water ◽  
Ground Water ◽  
Membrane Filtration ◽  
Cake Filtration ◽  
Nanofiltration Membranes ◽  
Surface Water Treatment ◽  
University Of Technology ◽  
Capillary Membranes ◽  
Pre Treatment ◽  
Concentration Polarisation

Capillary nanofiltration is a new concept in membrane filtration. This technique combines the advantages of the good water quality obtained from nanofiltration membranes with the easy hydraulic cleaning of capillary membranes. Direct capillary nanofiltration can be used to treat ground water or surface water without pre-treatment. At the Delft University of Technology several MSc-thesis projects have been carried out on this subject. This paper will describe some results of these studies. A model based on a mass balance to predict the flux of a capillary nanofiltration installation treating groundwater is proposed. In this model the only resistance taken into account is the concentration polarisation. Also a model to predict the flux when treating surface water has been developed. This model takes into account the resistance due to cake filtration.

COMPARATIVE STUDY ON SURFACE WATER TREATMENT USING ALUMINIUM SULPHATE AND POLYALUMINIUM CHLORIDES AS COAGULANT REAGENTS

2009 ◽  
Vol 8 (4) ◽  
pp. 859-863 ◽  
Author(s):  
Daniela Simina Stefan ◽  
Cristina Costache ◽  
Viorica Ruxandu ◽  
Monica Balas ◽  
Mircea Stefan
Keyword(s):  
Water Treatment ◽  
Surface Water ◽  
Comparative Study ◽  
Aluminium Sulphate ◽  
Surface Water Treatment

A rapid small scale evaluation of ultrafiltration performance for surface water treatment at Alcantarilha's water treatment works (Algarve, Portugal)

2004 ◽  
Vol 4 (5-6) ◽  
pp. 199-206
Author(s):  
M. Ribau Teixeira ◽  
H. Lucas ◽  
M.J. Rosa
Keyword(s):  
Water Treatment ◽  
Membrane Fouling ◽  
Conventional Treatment ◽  
Apparent Molecular Weight ◽  
Small Scale ◽  
Hydraulic Permeability ◽  
Scale Evaluation ◽  
Surface Water Treatment ◽  
Drinking Water Production ◽  
Pre Treatment

A rapid small-scale evaluation of ultrafiltration (UF) performance with and without physical–chemical pre-treatment was performed to up-grade the conventional treatment used for drinking water production in Alcantarilha's water treatment works, Algarve, Portugal. Direct UF and pre-ozonation/coagulation/flocculation/sedimentation/UF (O/C/F/S/UF) were evaluated using polysulphone membranes of different apparent molecular weight cut-off (MWCO) (15–47 kDa). The results indicated that (i) UF is an effective barrier against microorganisms, including virus larger than 80 nm; (ii) for surface waters with low to moderate SUVA values, direct UF performance is equivalent or better than the conventional treatment in terms of residual turbidity, while UV254 nm and TOC residuals require the use of O/C/F/S/UF; (iii) the permeate quality improves with the membrane apparent MWCO decrease, especially for the direct UF, although the conventional treatment performance is never reached using UF; (iv) membrane fouling and adsorption phenomena are more severe in direct UF than in O/C/F/S/UF sequence (pre-ozonation decreases the membrane foulants by decreasing their hydrophobicity) and these phenomena increase with the membrane hydraulic permeability and, particularly, with the membrane apparent MWCO.

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