The invention relates to methods and devices for the decontamination of fluid, particularly the removal of heavy metals and/or arsenic and/or their compounds from water, by means of electrolysis, wherein the water to be purified subjected to electrodes of different polarities. The invention can include...http://www.google.fr/patents/US7691253?utm_source=gb-gplus-shareBrevet US7691253 - Method and apparatus for decontamination of fluid