Flotation Units, type GPL

The GPL flotation units are robustly built and characterised by large "free surface" areas. For wastewater containing large solids contents, the design provides sufficient retention time for separation and pre-dewatering of the skimming.

The GPL units have been designed for wastewater with COD contents of 10 000 mg/l and higher. In the same system, suspended solids, fat, oil, grease and other dispersed and/or flocculated materials are removed.

The GPL's typical feature is the very efficient micro aeration system. The complete design of the GPL units is based on elimination of hydraulic disturbances, resulting in a complete stable and laminar flow at all cross sections of the system. Depending on the application, specially with respect to the solids amount to be removed, either a special multistage gas/liquid pump or a pressure vessel type saturation unit is applied to generate a supersaturated water/air (gas) mixture.

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