On the importance of mixing characterization and application in the water treatment process

0531619 - ÚH 2021 RIV GB eng J - Journal Article
Vašatová, Petra - Filipenská, Monika - Petříček, Radim - Pivokonský, Martin
On the importance of mixing characterization and application in the water treatment process.
Journal of Water Supply Research and Technology. AQUA. Roč. 69, č. 6 (2020), s. 639-646. ISSN 0003-7214. E-ISSN 1365-2087
R&D Projects: GA ČR(CZ) GA18-05007S
Institutional support: RVO:67985874
Keywords : aggregation * flocculation * floc properties * separation * shear rate * velocity gradient
OECD category: Environmental sciences (social aspects to be 5.7)
Impact factor: 1.644, year: 2020
Method of publishing: Limited access
https://iwaponline.com/aqua/article-abstract/doi/10.2166/aqua.2020.033/76281/On-the-importance-of-mixing-characterization-and

Floc properties can be controlled only by selecting a coagulant type and adjusting mixing parameters. However, optimization of mixing is widely overlooked. Well-chosen mixing conditions increase floc separation efficiency, which decreases the operating costs of drinking water treatment plants (DWTPs). This paper presents guidelines for designing mixing parameters in water treatment. Special attention is paid to the determination of mixing intensity and the purpose of different mixing intensities with respect to the subsequent separation. For instance, single-stage separation by filtration must be preceded by homogenization and rapid flocculation mixing. Double-stage separation by sedimentation and filtration should be preceded by homogenization, rapid flocculation mixing and slow flocculation mixing.
Permanent Link: http://hdl.handle.net/11104/0311155