title: The modified swirl sedimentation tanks for water purification.
abstract: This paper discusses design, evaluation, and application for the use of swirl/vortex technologies as liquid purification system. A study was performed using modified swirl sedimentation tanks. The vortex separators (OW, OWK, OWR and OWKR) have been studied under laboratory conditions at liquid flow rate from 2.8⋅10-5to 5.1⋅10-4[m3/s]. The pressure drop and the efficiency of purification of liquid stream were analyzed. The suspended particles of different diameters were successfully removed from liquid with the application of swirl chambers of proposed constructions. It was found that damming of liquid in the tank increases alongside liquid stream at the inlet and depends on the tank construction. The efficiency of the sedimentation tanks increases alongside the diameters of solid particles and decrease in the liquid flow rate. The best construction proved to be the OWR sedimentation tank due to smallest liquid damming, even at high flow rates, and the highest efficiency of the purification liquid stream for solid particles of the smallest diameter. The proposed solution is an alternative to the classical constructions of sedimentation tanks.
authors.affiliation: Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan, Poland. Electronic address: ochowiak@op.pl.
authors.forename: Marek
authors.initials: M
authors.lastname: Ochowiak
authors.affiliation: Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Matuszak
authors.affiliation: Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan, Poland.
authors.forename: Sylwia
authors.initials: S
authors.lastname: Włodarczak
authors.affiliation: Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan, Poland.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Ancukiewicz
authors.affiliation: Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Poznan, Poland.
authors.forename: Andżelika
authors.initials: A
authors.lastname: Krupińska
mesh_terms: D004867:Equipment Design; D019015:Geologic Sediments; D018508:Water Purification / Q000295:instrumentation* / Q000379:methods*
keywords: Efficiency of sedimentation of sand; Swirl sedimentation tank