Modeling of small scale reverse osmosis systems

A simulation model was developed and verified for a small scale reverse osmosis (RO) system operating in a closed-loop concentrating mode. The model combines material balances on the feed tank, membrane module and product tank with membrane mass-transfer models. The proposed model is a nonlinear dif...

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Bibliographic Details
Published in:Desalination 1985, Vol.52 (3), p.267-284
Main Authors: Slater, C.S., Zielinski, J.M., Wendel, R.G., Uchrin, C.G.
Format: Article
Language:English
Subjects:
Applied sciences
desalination
Exact sciences and technology
Industrial wastewaters
membranes
Pollution
reverse osmosis
simulation
Wastewaters
water treatment
Water treatment and pollution
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Summary:A simulation model was developed and verified for a small scale reverse osmosis (RO) system operating in a closed-loop concentrating mode. The model combines material balances on the feed tank, membrane module and product tank with membrane mass-transfer models. The proposed model is a nonlinear differential equation representing the feed concentration as a function of operating time. Correlations of flux, solute concentrations, and rejection with operating time and overall system recovery are functions of the model. Total dissolved solids (TDS) was the parameter representing solute concentration. Data from simple salt and industrial wastewater experiments were used to verify the model. The model suggests a good fit to the data over the range studied.
ISSN:0011-9164
1873-4464
DOI:10.1016/0011-9164(85)80037-0