A combined RO/freezing system to reduce inland rejected brine

Abstract

A combined RO/DCF system is proposed as an efficient system which would reduce the problem of the disposal of the rejected brine from inland desalination plants. Governing equations and thermodynamic relations are shown. Economical and energy comparisons between the combined system and separate RO and DCF units for 200 m3/h are presented. Results showed that the combined system can reduce the energy consumption by about 13 percent and 17 percent compared to separate RO and DCF plants respectively. The combined system can reduce the rejected brine by over 90 percent of that of separate RO plant at the same water production. © 1989.