Method for removal and detoxication of dissolved metals in a rainwater discharge
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United States of America Patent
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May 2, 2006
Grant Date -
Feb 19, 2004
app pub date -
Aug 15, 2002
filing date -
Aug 15, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a water treatment apparatus and method for reducing toxicity in zinc containing acid stormwater runoff, the apparatus comprising a first filter layer of high calcium material a last filter layer comprising a drainpipe arrangement embedded within an aggregate; and at least one intermediate filter layer comprising a wood mulch material positioned between the first filter layer and said last filter layer.
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