A renovative low cost technique for removal of arsenic from groundwater ― Integrated field study

摘要

Groundwater, the vital natural resource is used throughout the world for irrigation and drinking purposes due to its easy availability, dependability and cost effectiveness. Abstraction of this resource in the Bengal Delta Plain resulted in high arsenic groundwater contamination exhibiting severe health hazards among the affected population. Several remedial options though adopted for alternative supply, remained unsuccessful on long term basis. In sedimentary system arsenic remain adsorbed on Fe / Al oxides / hydroxides; therefore application of natural geo-chemical material with Fe / Al hydroxides in different ratios phases 'Laterite' is a suitable low cost fixed bed arsenic adsorber. The material is developed, tested and effectively used as filter media in field trial to gauge the techno-commercial viability.