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公开(公告)号：US09919244B2
公开(公告)日：2018-03-20
申请号：US15063397
申请日：2016-03-07
Applicant: Ovivo Inc.
Inventor： Tor Heimdal , John Vorwaller , Hugh Ryan Clark , Todd Kline , Ralph Petrone , Bruce A. Hugo , Roger Peters , Tyson Beaman
CPC classification number: B01D21/0006 , B01D21/0003 , B01D21/0042 , B01D21/2444 , Y02W10/37
Abstract: A clarifier in a wastewater treatment plant is provided with a submerged launder for effluent, the launder preferably having an integral density current baffle and scum baffle. In one embodiment an existing launder is modified, with its vertical leg replaced with a sloped plate defining launder conduit triangular in cross section, and with a sloping portion of the plate forming a density current baffle. Openings in the sloped plate permit entry of effluent liquid, and the liquid level in a clarifier is controlled without an overflow weir plate. In another form submerged pipe with entry holes serves as the launder, with support brackets integral with a density current baffle. A third form of the launder is a box formed beneath the shelf of an existing internal launder in the clarifier, again with a density current baffle extending down from the box. In another version an existing launder is covered and sealed, and holes are drilled through the launder wall to admit effluent. A submerged launder avoids problems of algae buildup and the need for algae sweeps or frequent cleaning of the launder.
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公开(公告)号：US20170252673A1
公开(公告)日：2017-09-07
申请号：US15063397
申请日：2016-03-07
Applicant: Ovivo Inc.
Inventor： Tor Heimdal , John Vorwaller , Hugh Ryan Clark , Todd Kline , Ralph Petrone , Bruce A. Hugo , Roger Peters , Tyson Beaman
CPC classification number: B01D21/0006 , B01D21/0003 , B01D21/0042 , B01D21/2444 , Y02W10/37
Abstract: A clarifier in a wastewater treatment plant is provided with a submerged launder for effluent, the launder preferably having an integral density current baffle and scum baffle. In one embodiment an existing launder is modified, with its vertical leg replaced with a sloped plate defining launder conduit triangular in cross section, and with a sloping portion of the plate forming a density current baffle. Openings in the sloped plate permit entry of effluent liquid, and the liquid level in a clarifier is controlled without an overflow weir plate. In another form submerged pipe with entry holes serves as the launder, with support brackets integral with a density current baffle. A third form of the launder is a box formed beneath the shelf of an existing internal launder in the clarifier, again with a density current baffle extending down from the box. In another version an existing launder is covered and sealed, and holes are drilled through the launder wall to admit effluent. A submerged launder avoids problems of algae buildup and the need for algae sweeps or frequent cleaning of the launder.
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