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Principles
of Design
As
for Brackish Water streams, the feedwater
must be properly pretreated to ensure
optimum membrane performance.
Depending
on the feedwater and design
specifications, recoveries of up to 50%
and rejections of up to 99.9% can be
achieved. At all times, EBD Water
Seawater Reverse Osmosis
Systems are designed to operate within the
technical limitations of the water
chemistry, temperature, and water
velocities.
Specifically,
the membranes performance is projected at
the third year of operation, the average
temperature of feedwater is assumed at 25
°C [Design range from 1 °C to 45 °C],
Turbidity at less than 1 NTU [after
pretreatment], inlet silt density index at
less than 4 [Design range 3 - 5],
feedwater TDS at 35,000 ppm [Design range
15,000 - 50,000 ppm], and inlet pressure
of 25 - 60 psig. Based on the above,
the highest recommended permeate flow and
recovery are calculated.
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EBD
Water’s Seawater Reverse Osmosis
Systems are effectively designed to
desalinate seawater, producing potable
water quality which exceeds the World
Health Organization (W.H.O.) standards.
