Chemical Tank Cleaning Eliminates Town's Chlorine Demand   Water & Wastes Digest May 2003   Ulrich Reimann-Philipp, Ph.D.
Finished water quality often declines in storage facilities. Traditional tank cleaning methods have some effect in removing loose debris and sediment, but leave most of the scale, metal oxide deposits and biological growth in place. Chemical cleaning methods have been widely applied in Europe for years and have become an essential part of preserving water quality in systems which operate with minimal or no chlorine.