ADVANCED MEMBRANE TECHNOLOGY FOR APPLICATION TO WATER-TREATMENT

Following the successful implementation of the 'MAC21' Project, the 'N ew MAC21' Project is being implemented for further development of memb rane technology in Japan. The project includes various pilot-scale and laboratory experiments on 1) nanofiltration system, and 2) MF/UF syst em combined with advanced treatment processes such as activated carbon treatment, ozonation and biological treatment. As the result, it has been shown that both systems are applicable to drinking water treatmen t. Although a NF system was very effective for the removal of organic contaminants such as precursors of disinfection by-products, it is con sidered that the development of a proper treatment method for the conc entrate will be very important in the future. (C) 1998 Published by El sevier Science Ltd. All rights reserved