This paper presents the results of the study of sludge aggregates produced during electrocoagulation of model wastewater of a composition corresponding to the effluents from the cellulose and paper industry. Wastewater was electrocoagulated statically using aluminium electrodes with a current density of 31.25 A m−2 and 62.50 A m−2. In subsequent stages of the treatment, sludge flocs were collected, their size was studied and their floc settling velocity (30–520 μm s−1) and fractal dimension (D) were determined. The values of D ranged from 1.53 to 1.95 and were directly proportional to the degree of wastewater treatment. Higher values of D were determined for sludge with lower water content (after 24 hours’ settling). Fractal dimension can therefore be used as an additional parameter of wastewater treatment control.
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Research Article|
September 15 2015
Analysis of sludge aggregates produced during electrocoagulation of model wastewater
B. Załęska-Chróst;
1Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury, 10-957 Olsztyn, Pl. Łódzki 4, Poland
E-mail: [email protected]
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R. Wardzyńska
R. Wardzyńska
1Department of Chemistry, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury, 10-957 Olsztyn, Pl. Łódzki 4, Poland
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Water Sci Technol (2016) 73 (1): 161–166.
Article history
Received:
April 30 2015
Accepted:
September 02 2015
Citation
B. Załęska-Chróst, R. Wardzyńska; Analysis of sludge aggregates produced during electrocoagulation of model wastewater. Water Sci Technol 8 January 2016; 73 (1): 161–166. doi: https://doi.org/10.2166/wst.2015.476
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