Induced gas liquid coalescer and flotation separator

DETAILED DESCRIPTION OF THE INVENTION The apparatus of the present invention as illustrated in FIG.
1 is generally indicated as an induced gas coalescer apparatus 2 with the apparatus being substantially dominated by the separator vessel 4.
As illustrated in the figures, the separator vessel 4 can be a substantially elongated, vertical vessel which defines an induced gas flotation chamber 6.
Within chamber 6, a coalescer riser tube 8 rises from a bottom portion of the chamber and is in open communication with the chamber contained liquid at or below the liquid surface.
Within the coalescer riser tube 8 a coalescer riser pack 10 is positioned in order to insure final coalescence of influent contaminants.
Clarified liquid is substantially present in the clear liquid well 12 portion of the chamber 6 and is withdrawn through the clarified liquid outlet 14 which communicates with the clear liquid well 12 through opening 16.
A froth discharge trough 18 circumferentially surrounds the perimeter of the separator vessel 4.
Coalescer discharge froth is collected in the discharge trough 18 and discharged from the trough 18 through outlet valve 20.
An adjustable stand pipe 22 is illustrated in the figure which provides one mechanical method of maintaining liquid level within vessel chamber 6, the stand pipe 22 being vertically adjustable in length and serves as a method for releasing clarified liquid into the standpipe housing 24 and clear water outlet valve 26.
Froth 28 is generated by the aeration and coalescence of impurities which have passed through the coalescer riser 8 and coalescer riser pack 10.
The liquid level 32 is substantially uniform inclusive of the effervescent surface zone 30.
The end of the coalescer riser 34 can be positioned in several heights in relationship to the liquid level 32 depending upon the geometry of the chamber 6, coalescer riser 8 and the throughput volumes of gas induced influent.
The induced gas flotation chamber 6 can be provided with a drain plug or port and the gas induced influent communication conduits with the coalescer riser 8 is provided with a sample valve 36 which is exterior to the induced gas flotation chamber 6