Please use this identifier to cite or link to this item: https://doi.org/10.1016/0011-9164(96)00081-1
Title: Design and economics of RO seawater desalination
Authors: Malek, A. 
Hawlader, M.N.A. 
Ho, J.C. 
Keywords: Desalination
Design methodology and economics
Reverse osmosis
Issue Date: Jul-1996
Source: Malek, A., Hawlader, M.N.A., Ho, J.C. (1996-07). Design and economics of RO seawater desalination. Desalination 105 (3) : 245-261. ScholarBank@NUS Repository. https://doi.org/10.1016/0011-9164(96)00081-1
Abstract: Large-scale seawater desalination is an attractive and viable alternative for the production of potable water in the absence of natural fresh water resources. Over the past two decades, the reverse osmosis (RO) process has allowed a tremendous reduction in the cost of potable water from seawater desalination. Indeed, cost studies conducted by various researchers have indicated that it is possible to obtain product water cost of about US$ 0.80/ m3. This paper introduces a comprehensive, but tractable, means of modelling large-scale seawater RO desalination plants that can accommodate various flow configurations. The two most important considerations in RO plant modelling are the permeator performance characteristics and the permeator replacement scheme. In particular, the flux degradation of the permeator with operational age has to be accounted for. The RO model introduced here was used for extensive plant cost analysis. The cost studies indicate that the permeator cost makes up a large percentage (∼37%) of the total plant capital cost. This means that large-sized permeators, which offer smaller cost per unit membrane area, should be utilized in order to appreciate economies of scale. In terms of operating cost, the annual permeator replacement cost also forms the major portion. Interestingly, with the use of hydraulic energy recovery systems, the product water cost is relatively insensitive to energy price fluctuations. Also, cost comparisons conducted for a brine-stage RO plant configuration indicated that it is more costly than single-stage plants, especially for high concentration seawater.
Source Title: Desalination
URI: http://scholarbank.nus.edu.sg/handle/10635/91438
ISSN: 00119164
DOI: 10.1016/0011-9164(96)00081-1
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

101
checked on Feb 14, 2018

WEB OF SCIENCETM
Citations

88
checked on Jan 23, 2018

Page view(s)

53
checked on Feb 19, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.