Liquid purification or separation – With gas-liquid surface contact means – With separator
Reexamination Certificate
2006-05-02
2006-05-02
Upton, Christopher (Department: 1724)
Liquid purification or separation
With gas-liquid surface contact means
With separator
C210S170050, C210S290000, C405S129250, C405S129650, C405S129700
Reexamination Certificate
active
07037423
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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Bartosh Joseph
Herman Stewart T.
Lezoche Zachary J.
Sewald, Sr. Richard T.
ISG Technologies Inc.
Masteller, Jr. Harold I.
Upton Christopher
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