Sand Filtration. Tipe :. Slow sand filtration Rapid (gravity) sand filtration Rapid (pressure) sand filtration. Pengertian .?. Sand filtration is a water purification process in which water is passed through a porous bed of filter medium Slow sand filtration? Rapid sand filtration?.
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SLOW SAND FILTER
When is Backwashing Needed?
Expansion area = 20-50 % dariketinggian bed filter