B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
B01F 5/18 (2006.01) B01F 3/04 (2006.01) C02F 1/74 (2006.01) C02F 3/12 (2006.01)
Patent
CA 2364735
A venturi device is provided for aeration of wastewaters containing suspended solids. It has a non-obstructive design which prevents attachment or accumulation of suspended solids, and promotes even air distribution for efficient aspiration of air and mixing of air and wastewater. The device has provisions for adjustment of the venturi throat size, for protection of the throat from wearing out, for enhancing air and wastewater mixing capabilities, and for flushing of the solids accumulated in the air entrance. In particular, the device has a venturi having a constricting inlet portion for receiving a carrier fluid, an expanding outlet portion and a throat therebetween. A plurality of apertures circumferentially spaced about the expanding outlet portion immediately downstream of the throat introduce an aspirated medium into the venturi. A spiral mixer may be provided upstream and/or downstream of the venturi, and ports provide instrument or flushing connections. A conical liner may be provided in the inlet portion.
Korzeniowski Jan A.
Malyszko Thomas E.
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