CHEMICALS on demand

摘要

MANY municipal water,food processing,and wastewater treatment plants are switching over from the nse of chlorine disinfectants and biocides to safer and more environmentally friendly poinr-of-use and on-demand generated chemicals.The primary reasons for this change are that conventional chlorine agents require transport by tankers on accident-prone highways or railroads,ever increasing safety and environmental regulations regarding toxic gases and chemical spills,and the required bulk storage or rhese hazardous materials at the sites where they are used.Safer and in many cases more effective chemicals have been developed thai can replace chlorine.For example,after many trial and error attempts to iind a,way to effectively control Legionnaires'disease,it was found that chlorine dioxide(CIO,)was one the few chemical agents that could consistently and safely disinfect Legionella bacteria.Add to this the ability to manufacture these safer chemicals at the locations that use them,and only when needed,and the advantages in total become obvious.