Laundry water recycling in ship by direct nanofiltration with tubular membranes

Julie Guilbaud, Anthony Massé, Yves Andrès, François Combe and Pascal Jaouen

Resources, Conservation & Recycling, 2010, vol. 55, issue 2, 148-154

Abstract: The present study deals with the feasibility to implement, on board ship, a direct nanofiltration process in order to treat laundry grey waters and recycle 80% to the inlets of the washing machines. At first, a specific methodology for real laundry grey water production was set up at the laboratory for the purpose. Characteristics of the lab-produced grey water are close to those observed on board (pH 7, 1300mgCOD/L, 80mgTSS/L). Then, a membrane screening in view of a selection was realised at the lab scale. A direct nanofiltration process (without pre-treatment) on tubular PCI-AFC80 membrane (35bar, 25°C, volumic-reduction-factor 5) allowed us to produce a permeate free of micro-organisms and suspended solids and with only 48mgCOD/L and 7mgTOC/L. Based on these satisfactory preliminary results, a techno-economic study was conducted (up-scaling) with the aim of producing daily 52m3 of recyclable permeate from 65m3 of polluted grey water. Finally, orders of magnitude, both for energetic consumption and processing costs, are proposed.

Keywords: Laundry; Recycling; Cruise ship; Grey water reuse; Nanofiltration; Tubular membrane (search for similar items in EconPapers)
Date: 2010
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:recore:v:55:y:2010:i:2:p:148-154

DOI: 10.1016/j.resconrec.2010.09.001

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