RETRIEVABLE DIFFUSER MODULE WITH TRUSS CONSTRUCTION
A diffuser module and system for diffusing gas into liquid such as in aeration/mixing of wastewater. Each module has a header pipe and diffusers which receive gas from the header pipe. Each header pipe is equipped with a truss for enhanced structural strength and resistance to bending. The truss may take the form of a buoyancy/ballast pipe connected with the header pipe by purlins.
1 . A diffuser module for applying gas to liquid, comprising:
a diffuser assembly including a header pipe and a plurality of diffusers connected with said header pipe to receive gas therefrom;
a gas supply line extending to said header pipe to supply gas thereto;
a beam member; and
a plurality of rigid purlins interconnecting said header pipe and beam.
2 . A diffuser module as set forth in claim 1 , wherein said beam member comprises a pipe providing a buoyancy chamber and including a buoyancy line connected with said buoyancy chamber for selectively supplying gas thereto for effecting a buoyant condition of said diffuser assembly.
3 . (canceled)
4 . (canceled)
5 . (canceled)
6 . A diffuser as set forth in claim 1 , wherein said beam member is located above and is oriented substantially parallel to said header pipe.
7 . A diffuser module as set forth in claim 1 , wherein said beam member is substantially parallel to said header pipe.
8 . A diffuser module for applying gas to liquid, comprising:
a diffuser assembly including a header pipe and a plurality of elongated diffusers connected to receive gas therefrom;
a gas supply line for supplying gas to said header pipe; and
a truss connected with said header pipe for structural enhancement.
9 . A diffuser module as set forth in claim 8 , wherein said truss comprises:
a beam spaced from and substantially parallel to said header pipe; and
a plurality of purlins interconnecting said beam and said header pipe.
10 . (canceled)
11 . (canceled)
12 . (canceled)
13 . (canceled)
14 . Apparatus for applying gas to a liquid, comprising:
a plurality of diffuser modules for immersion in the liquid, each module including a header pipe and a truss connected with said header pipe for structural enhancement thereof;
a plurality of diffuser pipes extending from each of said header pipes to receive gas therefrom for discharge into the liquid; and
a gas supply line extending to each header pipe to supply gas thereto.
15 . Apparatus as set forth in claim 14 , wherein said truss comprises:
a beam spaced from and substantially parallel to said header pipe; and
a plurality of purlins interconnecting said beam and said header pipe.
16 . (canceled)
17 . (canceled)
18 . (canceled)
19 . (canceled)