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OASIS FILTER LTD.
| OASIS FILTER LTD. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20100072118 | LOW OPERATING HEAD POLISHING SAND FILTER - This invention relates to a novel low operating head polishing sand filter comprising: (a) a plural-layer media bed comprising small, medium and large crushed quartzite; (b) an untreated water inlet system; (c) an underdrain system; (d) a filtered water collection and outlet system; and (e) a backwash water inlet, collection and siphon outlet system. | 03-25-2010 |