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Post date: Sep 19, 2010 7:59:37 PM
Nigeria Water Purification Animation
AERATION LESS IRON SINKS
FLOCULATOR ALUMINIUM SULFPHATE IMPURITIES FLOC OUT SINK
SAND FILTER CLEANING
LIME ADDED PH 7 (ACIDITY)
CHLORINE DISINFECT
STORAGE TANK
i-phone video 400 x 225 = 1.77
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