Tender For corrigendum : vacuum degasser packing removal, cleaning, acetic acid treatment, refixing after acetic acid spray in vacuum degasser.......clarifloculator and filling top-up of sand in the all 3 sand filters in wtp at hwpk site.
Tender For corrigendum : revamping of 1 nos clarifloculator mechanism bridge walkway with handrailing in raw water treatment plant at ongc hazira plant