| 摘要 |
<p>A set of sequential filters for greywaters treatment is presented comprising two linked tubular elements (1A,1B) interconnected by connections and containing in the interior of one of the tubular elements (1A) expanded clay and in the interior of the other tubular element (1B) perforated plates (7) arranged one over the other and between the same corrugated tubular filter elements (13). The interior of the bottom (knee 4) of the interconnected tubular elements is filled with stone (6).</p> |
