In case of low turbidity water Water filtration with low rate can eliminate turbidity without chemicals assist in sedimentation so that total flok (Floc) and does not require the use of settling tank for removal of turbidity and the aforementioned flok. Water production system is a mechanical or electrical device that has a minimal or none at all. It is possible to filter the water, without electricity, so it is suitable to use in rural areas has slowly filtered tank approx. 0.13-0.42 m 3/m. 2-hours. In the current The slow sand filter tank filter is used because it is very limited. Tank top with more speed. However, in a village far away from civilization, and there are no facilities for various land prices low makes the tank slowly. Somma is a different than with the slow control of the tank can be done easily without the people who have special knowledge and without electricity.
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