Influence of velocity gradient on optimisation of the aggregation process and physical properties of formed aggregates. Part 1. Inline high density suspension (IHDS) aggregation process

0360313 - ÚH 2012 RIV SK eng J - Journal Article
Polášek, Pavel
Influence of velocity gradient on optimisation of the aggregation process and physical properties of formed aggregates. Part 1. Inline high density suspension (IHDS) aggregation process.
Journal of Hydrology and Hydromechanics. Roč. 59, č. 2 (2011), s. 107-117. ISSN 0042-790X. E-ISSN 1338-4333
R&D Projects: GA ČR GA103/07/1016
Institutional research plan: CEZ:AV0Z20600510
Keywords : flocculation optimum * inline high density suspension (IHDS) formation process * properties of aggregates * intensity of agitation * velocity gradient G
Subject RIV: BK - Fluid Dynamics
Impact factor: 0.340, year: 2011

This paper deals with optimisation and acceleration of the clarification process. It was established that both these objectives are closely inter-related and can be accomplished by the formation of aggregates with a high agitation intensity until the flocculation optimum is reached. This is a new method of formation of aggregates which is called the Inline High Density Suspension (IHDS) formation process. Further, under the IHDS process the aggregates are formed with a single root-mean-square velocity gradient G > 50 s^-1. The resultant aggregates formed by the IHDS process are very compact, dense and homogeneous in their size, shape, volume and inner structure. Last but not least, the IHDS process applied to the HR-CSAV type sludge blanket clarifier facilitated its high attainable upflow velocity above of 25 m h^-1.
Permanent Link: http://hdl.handle.net/11104/0006481