Preventive Solutions and Safety Programs The Hydrex™4000 range is specifically formulated for membrane treatment systems. The Hydrex™ products keep the membranes free of scale and bacterial growth and aid in extending membrane life. Hydrex™ chemicals optimize operational costs, protect the expensive membrane modules and ensure smooth, efficient operation. is approved by leading international membrane manufacturers for use with their products. Veolia Water Solutions & Technologies offers the right Hydrex™ range including chlorination and de-chlorination agents, disinfectants, antiscalants and cleaners for all types of membranes: • Reverse osmosis Example of Hydrex™ products: • Hydrex™4101 is a scale inhibitorfor calcium carbonate • Hydrex™4102 is a scale inhibitorfor calcium carbonate. with high silica content.

A Global Packaged Offering • Balancingthe ionic composition ofthefeed water • Determining scaling potential of various salts at designed recovery and pH • Offering options of Hydrex™ products to be used to prevent scale formation • Defining dosage of chosen Hydrex™ product • Generatingfinal report. The physical dissection of an RO membrane and the laboratory analysis of its foulants can be one of the most definitive methods of troubleshooting an RO system. A Hydrex™ autopsy includes a wide range of procedures. • External and internal visual examination • Test of the element performance • Chemical...