TY - JOUR T1 - Effect of low frequency ultrasonication as a pre-chlorination treatment in the inactivation of streptococcus faecalis in drinking water JF - Philippine Engineering Journal A1 - Salamat, Grace Ruth L. A2 - Peralta, Genandrialine L. LA - English YR - 2009 UL - https://tuklas.up.edu.ph/Record/IPP-00000644301 KW - Water purification KW - Water chlorination KW - Enterococcus faecalis KW - Drinking water ER -