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CASE STUDY ANGERS, France (49) HEADWORKS BIOLOGY SEPARATION MEMBRANE DISINFECTION BIOSOLIDS SYSTEMS Eco-Friendly Safe Economical Energy Efficient 36 blocks of 24 modules AC1125 120,000 m3/day Raw water origin : surface ANGERS, France (49) 36 blocks of 24 modules AC1125 (2006) Angers and surrounding towns are supplied from the waters of the river Loire and the alluvial table. These waters are loaded with particles (suspended and colloidal matter, algae), organic matter, micro-organisms, kysts, bacteria and metals (Fe, Mn). To eliminate the bulk of this pollution, Aquasource membranes are associated with Cristal® process of powdered activated carbon. • The water : Turbidity : 5 to 100 NTU Iron : < 0.05 to 2 mg/L Manganese : 0.05 to 0.3 mg/L T : 5 to 25°C pH : 7 to 9.7 TOC : 3 to 8 mgC/L KMnO 4 demand : 2.5 to 9.5 mgO2/L • Treatment objectives : OZONE Distribution Elimination of turbidity microbiological retention. and • The system : PAC Cl2 The AC1125 Ultrafiltration module has a membrane area of 125 m² and is integrated in the Ultrazur 450 unit. Its average flow rate at 20°C is 12.5 m 3/hr. Source Partnership AQUASOURCE 20 AV. DIDIER DAURAT - BP 64050 - 31029 TOULOUSE CEDEX 4 - FRANCE 33 (0) 5 61 36 30 36 (TEL) - 33 (0) 5 61 36 30 60 (FAX) WWW.AQUASOURCE-MEMBRANE.COM CS - VUS0025 - V0 - 2007