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this is the primary treatment where the tank separate the wastewater into three separte stratification of scum in top; water in the middle and sluge at the bottom
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 00:32, 14 March 2008 | | 2,071 × 2,950 (3.73 MB) | Nth5 (talk | contribs) | this is the primary treatment where the tank separate the wastewater into three separte stratification of scum in top; water in the middle and sluge at the bottem |
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