The Problems: Square Pharmaceuticals, the largest pharmaceutical company in Bangladesh, had an existing pre- treatment to a Reverse Osmosis and UV system, which included: • Multimedia filter • Activated Carbon Column • 5 micron Cartridge Filter The main problem was Pseudomonas bacteria growth in sand and carbon filters. Case Study: Square Pharma Project ID: Company: Square Pharmaceuticals Location: Gazipur, Bangladesh Year: 2014 Description: Pre-treatment for Reverse Osmosis and UV Goal: Protect the UV-unit and the membranes from ferric and bio fouling Capacity: 60 m 3 /hour Water Source: Ground Water Items Existing Values Required Value Fe (mg/L) 10 < 0.3 As (ug/L) 8-10 < 5 Turbidity (NTU) Up to 10 < 3 Pseudomonas bacteria (units/100 ml) >1000 <1 ZPM ZPM Dryden’s Know-how AFM AF

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