| 摘要 |
<p>The invention relates to a tertiary filtration section for refining waste water, to be located particularly downstream of a purification plant, comprising a set of filter panels (13) arranged in parallel rows (12) inside a treatment tank (11), on which a to-and-fro bridge crane (14) is foreseen carrying a counterwashing system for cleaning the filters and for suction from the bottom of the tank (11), as well as a lifting system (16) for extracting the panels (13) which are mounted on vertical perforated pipes (21), integral with a bottom pipe (20) which connects the panels of each row and through which the filtered water is drained. <IMAGE></p> |
