Water Treatment Plant Reduces Hazardous Compounds

A water treatment plant designed by Severn Trent Services-Apliclor and the Puig-reig (Spain) is solving a long-standing problem of elevated iron and manganese levels in the city's drinking water. Using chlorine dioxide for pre-oxidation treatment, the plant is also minimising hazardous compounds that are formed by the reception of chlorine with organic matter.

The plant, located near Barcelona in north-eastern Spain, was constructed in accordance with the Spanish government's Plan E economic stimulus plan. Sorea served as the general contractor for the project. The treatment plant covers 1,500m2 and treats up to 80m3/hr to provide water for the 4,000 inhabitants of Puig-reig. The plant, which consists of pre-oxidation, coagulation/flocculation, filtration and disinfection systems, is said to significantly improve the quality of the water by removing iron and manganese.

In addition, Severn Trent Services-Apliclor's Aquadiox chlorine dioxide generating system serves as the pre-oxidation process as an alternative to the use of chlorine. By using chlorine dioxide instead of chlorine, the treatment plant minimises trihalomethanes, hazardous compounds that are generated by the reaction of chlorine and organic matter during the water treatment process.

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