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US 4,639,314 AGranted
Fine bubble diffuser and diffuser system having filtered blow-down tube
OwnerRobert R. Tyerinventor
Life of this patent
Estimating the term…
Abstract
An improved fine bubble diffuser and diffuser system is provided. The diffuser includes a filtered blow-down tube for containing an internal gas pressure within the diffuser and allowing water to be removed from the system and further includes a filter disposed between the blow-down tube and the diffuser for filtering solids from water entering the diffuser.
Claims12
In a gas diffuser system for a vessel having at least one gas diffuser element connected to a gas supply pipe, the improvement comprising:
- (a) At least one tube connected to the system, the tube extending in a downward direction from the system and having an opening to the vessel located in predetermined distance below the level of the diffuser element, and the tube communicating with the system through an upper end;
- and
- a filter extending across the tube and having pores sized to exclude from the interior portions of the system solid material suspended in liquid material entering the tube through its opening to the vessel.
A gas diffuser for use in wastewater vessels and the like comprising:
- (a) a diffuser body having at least one fine bubble generating surface;
- (b) a tube extending downwardly from and communicating with the diffuser body at its upper end and having an opening to the vessel located a predetermined distance below the fine bubble generating surface;
- and
- (c) a filter extending across the tube and having pores sized to exclude from the interior portions of the diffuser body solid material suspended in liquid material entering the tube through its opening to the vessel.
1 more element
A gas diffuser comprising:
- (a) a near-flat, horizontally-disposed, porous surface element for generating fine bubbles, the surface element having pores having an average size of less than 200 microns;
- (b) a containment and support vessel having a concave-upwardly bowl-shaped bottom member sealingly attached to the porous surface element at the periphery thereof;
- (c) means for connection to a gas supply pipe attached to the diffuser and communicating with the interior of the containment and support vessel through and inlet opening therein;
- (d) a baffle member disposed within the containment and support vessel and spaced apart from the inlet opening, the baffle member being sized with respect to the inlet opening such that incoming gas is arrested and displaced throughout the vessel;
- (e) a blow-down tube attached to and extending downwardly from the containment and support vessel having a predetermined length sufficient to contain a positive gas pressure within the containment and support vessel and enable uniform gas distribution across the system;
- and
- (f) a porous filter having pores of an average size less than the average pore size of the surface element and disposed within the blow-down tube to filter liquid entering the containment and support vessel through the blow-down tube.
4 more elements
Dependencies are inferred from the claim text.