AERATION METHOD AND APPARATUS

A submerged aerator includes a non-impelling bubble shearing mechanism rotating with and below an axial flow impeller which impells liquid downward past the bubble shearing mechanism to entrain the sheared bubbles in the downward flow to provide increased retention of the sheared bubbles in the lowe...

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Bibliographische Detailangaben
Hauptverfasser:	SHELL, GERALD L, DI GREGORIO, DAVID
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY METALLURGY MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	A submerged aerator includes a non-impelling bubble shearing mechanism rotating with and below an axial flow impeller which impells liquid downward past the bubble shearing mechanism to entrain the sheared bubbles in the downward flow to provide increased retention of the sheared bubbles in the lower portion of the liquid body. The shearing mechanism includes a hollow cylinder having an open bottom to receive bubbles, a closed top concentrically secured to a rotating shaft, and a slotted sidewall through which the bubbles are released and sheared.