… slow sand filter (HSSF) models for the removal of microorganisms from river water throughout
the … Filters were fed daily with 48 L pre-treated river water (24 h sedimentation followed by …

… Only 48% cryptosporidium removal was reported in a slow sand filter using sand with a
uniformity coefficient of 3.5 to 3.8 [23]; in contrast, another study using the same river water …

… In this study, the physical adsorption effect of river sand on pollutants … sand filters of laboratory
scale were used to compare the effect of different particle sizes of river sand on raw water …

… The roughing filters utilize raw water from river Nile directly through the intake … water
produced from a roughing filter with gravel in three layers, was passed to different slow sand filters …

… of the slow sand filter modification unit in treating the water of … of sand with silica sand and
geotextile and sand with Anadara … of the treated water using the unit Slow Sand Filter have met …

… to improve the quality of drinking water at home through simple, … Sand Filter (HSSF), a
home scale of the slow sand filter, whose main widespread model is the patented biosand filter (…

… purifier in a slow sand filter. 139-148p, in Graham, N. and R. … Nakamoto : Role of filamentous
algae in a slow sand filter. … harvest method in a pond of a slow sand filter. Verb. Internat. …

… Some households in rural areas of the Red River Delta have thus started to use simple
sand filters or settling tanks to remove the iron from the groundwater. Household …

… Additionally, this study evaluated the reduction of river water turbidity by a simple pre-treatment
by sedimentation and passage through blankets and the reduction of microbiological risk …

… The weekly introduction of river water was tested as a filter-ripening … river water) to speed
up the HSSF ripening. Ripening consisted of a controlled introduction of river water to the filters …