Appeal No. 1998-0425 Page 39
Application No. 08/272,527
D. a cleaning gas source in communication with the
plenums to pass cleaning gas through the elements and clean
them,
E. a plurality of flow regulating means connected with
said cleaning gas source and with said plenums for regulating
the flow of said cleaning gas or both treating gas and
cleaning gas to said plenums, said flow regulating means being
sized or adjusted to deliver the gas or gases at a
substantially similar rate to each of said elements, and
F. retaining means for securing said elements in
gas-tight relationship with their respective plenums.
3. Liquid treatment apparatus comprising:
A. a natural or man-made liquid impound having a bottom
surface,
B. a network of generally horizontal treating gas supply
pipes supported in said impound,
C. a plurality of diffusers comprising plenums mounted on
said pipes in said impound at elevated positions relative to
said surface and supporting a plurality of area-release
diffusion elements above said surface in communication with
the network to direct treating gas through the elements into
the liquid, said elements having upper and lower surfaces
bounded by peripheral sides, and said plenums comprising
gas-tight enclosures that enclose said lower surfaces and that
include upstanding
wall means facing and adjacent to said sides,
D. a cleaning gas source in communication with the plenum
to pass cleaning gas through the elements and clean them,
E. a plurality of flow regulating means connected with
said plenums for regulating the flow of cleaning gas or broth
treating gas and cleaning gas to said plenums, said flow
regulating means being sized or adjusted to deliver the gas or
gases at a substantially similar rate to each of said
elements, and
F. retaining means for securing said elements in
gas-tight relationship with their respective plenums.
4. Liquid treatment apparatus comprising:
A. a natural or man-made liquid impound,
Page: Previous 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Next
Last modified: November 3, 2007