126
Views
6
CrossRef citations to date
0
Altmetric
Articles

Seawater pretreatment by dead-end micro and ultrafiltration in pressure-driven inside feed

, , &
Pages 416-422 | Received 09 Mar 2012, Accepted 18 Jul 2012, Published online: 10 Aug 2012
 

Abstract

Low pressure microfiltration (MF) and ultrafiltration (UF) is used as seawater pretreatment before reverse osmosis membranes for capacity that ranged from 6,700 to 140,000 m3 per day at Colakoglu Steel Mill (Turkey), Yu-Han (China), Kindasa (Saudi Arabia), Fukuoka (Japan), and Ad Dur (Bahrain). Among all modes of porous membrane filtration, pressure-driven inside feed configuration accounts for about 30% of all membrane configurations used for water and wastewater treatment. The present study deals with the MF and UF with hollow fiber membranes (polyacrylonitrile [PAN] 50 kDa, polyethersulfone [PES] 100 kDa, and polyvinylidene fluoride [PVDF] 0.1 μm) of seawater in pressure-driven inside feed configuration. Several cycles of filtration have been carried out at 100 L h−1 m−2 during 30 min for each followed by 30 s of permeate backwash at 250 L h−1 m−2. Microalgae-rich seawater has been prepared at laboratory which contained 30 g of salt, 1.2 × 108 (+/−0.25 × 108) of cells (Nannochloropsis oculata and Skeletonema costatum) per liter. The highest fouling resistance ranging from 1.57 to 3.25 × 1011 m−1 has been found for the PES membrane with an increase of the resistance value along filtration cycles. Whatever the used membrane, all microalgae have been retained and the backwash efficiencies to microalgae removal from membrane increased along filtration cycles. On the basis of these results, the 0.1 μm PVDF membrane seems to be more suitable to seawater membrane pretreatment.

Notes

Presented at the International Conference on Desalination for the Environment, Clean Water and Energy, European Desalination Society, 23–26 April 2012, Barcelona, Spain

Log in via your institution

Log in to Taylor & Francis Online

There are no offers available at the current time.

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.