The progressive reduction of velocitygradient to keep the flocculation rate as high as possible without breakage of flocsis called 'tapered flocculation'. In the present work, an attempt has been made to compare the performance of continuous tapered flocculationin conicaland cylindricaltanks. The efficiencyof conical flocculator was found to be higher than that of cylindrical flocculator, espec...

The tube flocculator is used to study how fluid shear levels affect the settling properties of a flocculated alum-kaolin suspension. FReTA is employed to quantitatively compare the effects of varying fluid shear and hydraulic residence time on the sedimentation velocity distributions and the post-sedimentation residual turbidities of flocculated suspensions formed in the tube flocculator. Resul...

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The purpose of this study was to evaluate the efficiency a large-scale Horizontal Tubular Flocculator (HTF) as an easy-to-implement technology for potable water provision compared traditional baffle flocculator. HTF built with 4-inch diameter PVC pipe and coupled sedimentation filtration process. Experimental tests were performed using lengths 68.4 m 97.6 HTF. These combined raw flow rates 0.25...

Secondary clarification is a crucial unit process in wastewater treatment; the particulate biocatalysts are separated from the clean water by gravitation. Their gravitational settling is highly dependent on the particles’ properties such as size, density and permeability. Hence, floc aggregation and disaggregation are essential to consider in the evaluation of the clarifier efficiency. The focu...

Abstract During our research work, we examined the removal of contaminants from synthetically produced bathing waters using different coagulants and studied efficiency mechanism coagulation-flocculation processes in detail. In performed experiments with two types (iron(III) chloride polyelectrolyte) compared their efficiencies. The zeta potential its change were monitored as a qualifying parame...

Pollution in river water affects human, plant and animal health activities, its removal using chemical coagulants is a huge concern. This study aims to reduce turbidity COD pollutants through coagulation-adsorption process by Tacca leontopetaloides biopolymer flocculant (TBPF) powder activated carbon (PAC). In coagulation experiment, TBPF dosages were varied evaluate the effect on Bioblock floc...