US 12,459,013 B2
Coanda effect induced lamellae cleaning system for wastewater and drinking water treatment clarifier
Guillaume Perin, Pierrefonds (CA); Martin Caspar, Montréal (CA); Christian Scott, Montréal (CA); and Guillaume Jeudy, Montréal (CA)
Assigned to VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT, Saint-Maurice (FR)
Appl. No. 18/005,019
Filed by VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT, Saint-Maurice (FR)
PCT Filed Jun. 22, 2021, PCT No. PCT/CA2021/050848
§ 371(c)(1), (2) Date Jan. 10, 2023,
PCT Pub. No. WO2022/011451, PCT Pub. Date Jan. 20, 2022.
Claims priority of provisional application 63/051,509, filed on Jul. 14, 2020.
Prior Publication US 2023/0330714 A1, Oct. 19, 2023
Int. Cl. B08B 5/02 (2006.01)
CPC B08B 5/02 (2013.01) [B08B 2205/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method to dislodge sediment retained within a lumen of individual tubes from a tube settler assembly used for raw water clarification, said method comprising the steps of:
providing a high pressure air power supply means;
providing a number of first perforated pipes;
releasing high pressure air from said high pressure air power supply means through said number of first perforated pipes beneath said tube settler assembly, to generate a first fluid flow from combined high pressure air and raw water;
providing a smooth arcuate deflectors at a location between said tube settler assembly and said number of first perforated pipes and located in a pathway of said first fluid flow, said smooth arcuate deflectors of such size, shape and number as to generate turbulence of a Coanda-effect type of said first fluid flow; and
driving said first fluid flow towards and through a bottom mouth of tubes lumen of the tube settler assembly and thereinto in such a way as to dislodge sediments trapped therein.