Appeal No. 1997-4285 Page 12
Application No. 08/420,852
Claim 1 reads as follows:
A method for removing heavy metals, paint residues,
fats, oils and grease from wastewater and processing the
resulting solid wastes in an apparatus, the method
comprising the steps of:
a) placing wastewater into a reactor/settling tank;
b) additively mixing a water purifying composition
and an oxidant into the wastewater to yield a mixture;
c) neutralizing the pH of the mixture to 7.5-9.4;
d) allowing the mixture to stand until the purifying
composition forms a sludge at the bottom of the tank
leaving an essentially heavy metal and oil free
supernatant;
e) pumping the resulting supernatant through a
filter to yield recyclable wastewater suitable for
disposal or reuse;
f) pumping the sludge to a holding tank where the
sludge is thickened; and
g) pumping the sludge to a solar dewatering unit,
wherein said sludge is dewatered to a water content of
less than 50%, wherein the reactor/settling tank, the
holding tank and solar dewatering unit of the apparatus
are arranged to form a portable unit.
Claim 9 reads as follows:
A method for treating wastewater, processing the
resulting solid wastes and producing reusable water in an
apparatus, comprising the steps of:
a) adding an oxidizing agent and a reactive settling
agent to the wastewater in a reactor/settling tank,
thereby forming a mixture;
b) adjusting, in the reactor/settling tank, the pH
of the mixture to 7.5 to 9.4 with a base;
c) allowing the mixture to stand in the
reactor/settling tank, until the settling agent forms a
sludge at the bottom of the reactor/settling tank and a
supernatant;
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