Research Article
Ali Almasi, Abdollah Dargahi,
Abstract
Process performance of pressured filtration units is complicated and depends on parameters such as filter bed granules size and shape, filter bed depth, filtration rate and so on. Present study was a pilot scale laboratory study with the aim of evaluation of the efficiency of home pressured sand filters for pathogen removal based on coliform, fecal streptococci and turbidity indices and suspended materials. Whole experiments were conducted according to standard methods. According to results, highest removal of total coliform, fecal coliform, fecal streptococci, suspended materials and turbidity obtained as 98, 97, 100, 100 and 97 percent indicating high efficiency of studied system at long- term application of above mentioned pollutants removal. Therefore, use of this system for water filtration with strict population or in house scale recommended for producing better quality water.