Water conservation through reclamation of sewage for reuse

Abstract

In major urban centers of ASEAN there have been water shortages. Water conservation through reclamation and reuse is essential. A 45,000 cu m per day treatment plant was built to reclaim sewage for industrial uses. The reclaimed water in general meets with the quality requirements for general washing and process applications of industries such as paper and textile. As demand of ultrapure water increases advanced treatment processes to reduce dissolved ions, silica, organic and inorganic particles and other impurities become necessary. This paper presents data of field studies of the performances of a RO plant and an electrodialysis reverse (EDR) plant respectively producing 30 and 170 cu m/hr ultrapure water for their intended use.