Definition: Infiltration bed (vertical flow) (independent secondary waste water treatment)
Environment
Treatment system in which the waste water is led vertically through a flooded field or swamp, covered with helophytes and equipped with subsoil drainage. Waste water is fed intermittently to the system. Pollution is removed by (physical) filtration and biological breakdown.
Source:
OECD/Eurostat Joint Questionnaire - Inland Waters
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