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公开(公告)号：US20210331091A1
公开(公告)日：2021-10-28
申请号：US17267444
申请日：2019-07-19
Applicant: Tyson Garret BEAMAN , Garret BEAMAN , Ryan CLARK , John VORWALLER , Robert E. HANFORD , Ovivo Inc.
Inventor： Tyson Beaman , Garret Beaman , Ryan Clark , John Vorwaller , Robert E. Hanford
Abstract: In a wastewater treatment system, a clarifier has a submerged effluent launder, with a sloped, submerged plate that allows clarified liquid to exit through submerged openings. The sloped surface tends to accumulate solids, which can lead to algae growth. Typical internal scum collection system equipment prevents any efficient way to clear the accumulated sludge off the launder surface because of interferences. As disclosed here, a scum discharge area or box is placed external to the clarifier in one embodiment. Scum is wiped from a vertical surface of the launder assembly, above the sloped launder surface, and swept over a scum beach at one position in the clarifier, to drop into a lower trough and the flow out through the clarifier wall to a drop out box or scum discharge area. This allows for a rake-attached, sweeping launder wiper to be moved with the clarifier's rake to remove the accumulation of sludge from the launder's submerged surface, without elaborate moving parts. The sludge is swept back to settle in the clarifier, improving effluent quality by preventing sludge from exiting along with clarified water. In another embodiment the scum discharge box is internal, as a low-profile vertically disposed channel against the inside clarifier wall, leading to an existing scum pipe through the clarifier wall.
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公开(公告)号：US11331601B2
公开(公告)日：2022-05-17
申请号：US17267444
申请日：2019-07-19
Applicant: Ovivo Inc. , Tyson Beaman , Garret Beaman , Ryan Clark , John Vorwaller , Robert E. Hanford
Inventor： Tyson Beaman , Garret Beaman , Ryan Clark , John Vorwaller , Robert E. Hanford
Abstract: In a wastewater treatment system, a clarifier has a submerged effluent launder, with a sloped, submerged plate that allows clarified liquid to exit through submerged openings. The sloped surface tends to accumulate solids, which can lead to algae growth. Typical internal scum collection system equipment prevents any efficient way to clear the accumulated sludge off the launder surface because of interferences. As disclosed here, a scum discharge area or box is placed external to the clarifier in one embodiment. Scum is wiped from a vertical surface of the launder assembly, above the sloped launder surface, and swept over a scum beach at one position in the clarifier, to drop into a lower trough and the flow out through the clarifier wall to a drop out box or scum discharge area. This allows for a rake-attached, sweeping launder wiper to be moved with the clarifier's rake to remove the accumulation of sludge from the launder's submerged surface, without elaborate moving parts. The sludge is swept back to settle in the clarifier, improving effluent quality by preventing sludge from exiting along with clarified water. In another embodiment the scum discharge box is internal, as a low-profile vertically disposed channel against the inside clarifier wall, leading to an existing scum pipe through the clarifier wall.
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公开(公告)号：US10150687B2
公开(公告)日：2018-12-11
申请号：US15448088
申请日：2017-03-02
Applicant: Ovivo Inc.
Inventor： Tor Heimdal , Ryan Clark , Scott Hawkins , John Vorwaller
Abstract: In a sludge thickener water/wastewater treatment system, sludge solids are recirculated with a mixer positioned in the influent column or offset from the center column and within the stilling well, in order to produce essentially constant sludge solids concentration in the sludge withdrawn from the thickener. This solves the problem of thickeners producing inconsistent underflow solids concentration and often exhibiting problems with binding of rake arms due to sometimes very high sludge concentrations. Also, dewatering steps that follow thickening typically require a relatively constant solids concentration for efficient operation.
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公开(公告)号：US20170253516A1
公开(公告)日：2017-09-07
申请号：US15448088
申请日：2017-03-02
Applicant: Ovivo Inc.
Inventor： Tor Heimdal , Ryan Clark , Scott Hawkins , John Vorwaller
CPC classification number: C02F11/12 , B01F3/1221 , B01F5/104 , B01F5/108 , B01F7/007 , B01F7/165 , B01F7/22 , B01F2003/1285 , B01F2215/0052 , C02F11/121 , C02F2301/046
Abstract: In a sludge thickener water/wastewater treatment system, sludge solids are recirculated with a mixer positioned in the influent column or offset from the center column and within the stilling well, in order to produce essentially constant sludge solids concentration in the sludge withdrawn from the thickener. This solves the problem of thickeners producing inconsistent underflow solids concentration and often exhibiting problems with binding of rake arms due to sometimes very high sludge concentrations. Also, dewatering steps that follow thickening typically require a relatively constant solids concentration for efficient operation.
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