Abstract
The study was carried out to evaluate the feasibility of slow sand filter by using dolochar, a solid waste generated from sponge iron industry, as a filter media and compared with the sand media filter. Effectiveness of slow sand filters assessed by two laboratory-scale filter columns (10 cm diameter and 0.40 m media depth): one consisting sand media and other with dolochar. The effective size of both sand and dolochar media used were 0.42 mm to study the performance at filtration rate of 0.06 m/h. For 160 h of run period, the dolochar media showed higher removal efficiencies, especially chemical oxygen demand (COD) removal up to 89% compared to sand media filter of 69%, turbidity removal of 96% compared to 90% of sand media filter, and phosphate removal also observed more in case of dolochar media filter—especially, the phosphate removal from the dolochar media filter was up to 92.71% compared to sand filter of 85.24%. Since the dolochar media filter exhibited to possess higher removal efficiencies, it supports the utility of dolochar as a low cost and highly efficient filter media for slow sand filtration.
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The authors are thankful to the School of Infrastructure, Indian Institute of Technology Bhubaneswar, India, for providing facilities to carry out the research work in the concerned area.
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Vairagi, P.D., Dash, R.R. (2019). Effectiveness Study of Dolochar as a Filter Media in Wastewater Filtration. In: Kalamdhad, A., Singh, J., Dhamodharan, K. (eds) Advances in Waste Management . Springer, Singapore. https://doi.org/10.1007/978-981-13-0215-2_35
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DOI: https://doi.org/10.1007/978-981-13-0215-2_35
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