The customer is a renowned pharmaceutical company based in India, founded with the aim of manufacturing lifesaving immune-biologicals. They installed a water treatment system to recycle pharmaceutical process wastewater for reuse. Ultrafiltration was chosen as pretreatment to a reverse osmosis system, and the feed water was tertiary treated pharmaceutical effluent.
Soon after operation began, the existing UF membranes were repeatedly choking. The customer had to frequently backwash and resort to chemical cleaning, often up to three times in a day.
RO performance was impacted due to frequent cleaning because of higher SDI values. After seven to eight months of operation, the membranes were completely fouled. The customer started searching for a more reliable and advanced ultrafiltration solution.