Case Study
Hanhwa Total Petrochemical, Korea
Water shortages have forced industry in the Daesan region to use polluted local rivers as a source of industrial water. Local industry has been using reverse osmosis to produce high quality industrial water from these surface supplies since the early eighties. Conventional pre-treatment systems used on these early plants were not able to reduce silt density index (SDI) to an acceptable level. Downstream reverse osmosis (RO) systems experienc