ANALYSIS OF CENTRIFUGAL SEDIMENTATION PROCESS OF POSTPRODUCTION SUSPENSION FROM TIMBER PROCESSING PLANT USING FLOCBEL TYPE FLOCCULANT

摘要

The results of the study dealing with the treatment of wastewater from a timber processing plant were presented. The investigations have been carried out for one flocculant, namely Flocbel FC 170H, applied to improve centrifugal sedimentation process. The experiments were performed with the use of condensed product of industrial effluents in a laboratory centrifuge. The relationship between the flocculant dose and sediment humidity as well as solid concentration in the drained off liquid have been determined. On the basis of earlier research the mathematical equations describing the relationship between the parameters of the sediment (humidity, solid concentration) and the independent variable parameters (time of centrifug-ing, rpm of the setting centrifuge, initial temperature of the sediment, dose of flocculant) have been derived. The flocculant Flocbel FC 170H used in the experiments only slightly improved the centrifugal process, but the process proved to be more efficient than in the case of flocculants applied in earlier study (Praestol 2900, Flocbel FC190).