title: Review of coagulation technology for removal of arsenic: case of Chile.
abstract: Coagulation technology has been used since 1970 in northern Chile for removing arsenic from drinking-water. This experience suggests that coagulation is an effective technology for the removal of arsenic. It is currently possible to reduce arsenic from 400 microg/L to 10 microg/L at a rate of 500 L/sec, assuming pH, oxidizing and coagulation agents are strictly controlled. The Chilean experience with the removal of arsenic demonstrates that the water matrix dictates the selection of the arsenic-removal process. This paper presents a summary of the process, concepts, and operational considerations for the use of coagulation technology for removal of arsenic in Chile.
authors: Department of Civil Engineering, Division of Water Resources and Environment, University of Chile, Blanco Encalada 2002, Santiago, Chile. amsancha@ing.uchile.cl
authors: Ana María
authors: AM
authors: Sancha
mesh_terms: D001151:Arsenic / Q000737:chemistry*; D020261:Arsenic Poisoning / Q000517:prevention & control*; D002677:Chile; D004781:Environmental Exposure; D005618:Fresh Water / Q000737:chemistry*; D006801:Humans; D007501:Iron / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*; D014881:Water Supply
chemical_list: D014874:Water Pollutants, Chemical; D007501:Iron; D001151:Arsenic