| 22 | Desalination & Water Reuse | August-September 2015
projects
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Dr–Ing A Yfantis president and managing director and Dr N Yfantis
technical director, Sychem
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Stringent boiler feedwater quality requirements arising from the advent of supercritical, high-pressure boilers
has upped demands on water purification systems for steam generation significantly. And system designers still
must contend with varying raw water characteristics dependent on location. The authors describe the challenges
encountered at an oil industry site and the responses to them using a purification technology that is gathering
favour in the sector.
While long-established demineralization
resin technology can meet the quality requirements for
boiler feed water, there is a widespread and increasing
shift in the oil sector to continuous electrodeionization
(CEDI or EDI) technology. Reasons for this shift
include the elimination of hazardous regeneration
chemicals and neutralization systems, a much
smaller footprint, reduced overall cost of ownership –
particularly in operational cost, and more consistent
product water quality.
March of continuous
electrodeionization in
ultra pure water use
Greek economy: Greece's largest desalination plant at Corinth
Refineries is demonstrating sound investment returns.
