Intgration of hollow fiber filtration and flotation unit under industrial conditions

conference paper

English

Flotation as a chemical unit operation has already reached its maturity and is relatively safely used in industry if the corresponding pilot tests are done. Membrane filtration has not such a long and successful history of applications on industrial scale. However, there are some large-scale applications, e.g. communal wastewater treatment. Both methods have their known pros and cons. Integration can partially eliminate disadvantages (membrane filtration e.g. high investment cost, flotation e.g. high concentration of suspended solids). It is obvious that there are two possible types of integration namely a flotation filtration train or placing filtration directly into flotation. It would be relatively easy to study such integration on a laboratory level using such water streams, which would be artificially prepared. However, the idea of integration must be verified under industrial conditions. Four different tasks of heavy metal removal by the integrated unit operations from wastewater were studied. Elimination of Hg and Al is described in details and confronted with results of three reaming case studies. The integration problem is a multidimensional task. Therefore four pilot tests cannot generate enough data for making reliable conclusions. However, it is clear that there is no optimal integration. The integration problem must be solved on ad hoc basis.

Hollow Fiber, Integration, Microfiltration, Flotation, Heavy Metals

DOHNAL, M.; TVARŮŽEK, P.; PLEŠEK, M.

1. 1. 2003

Slovak Society of Chemical Engineering

Bratislava Tatranské Matliare

80-227-1922-6

Permea 2003 Proceedings of the Membrane Science and Technology Conference of the Visegrad Countries with Wider International Participation

44

55

12