Towards zero waste production in the paint industry wastewater using an agro-based material in the treatment train
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An attempt has been made to evaluate the use of natural, agro-based material, Moringa oleifera as a coagulant in the treatment of recreated water-based paint effluent. The treatment train sequence comprising coagulation, flocculation, sedimentation, sand filtration, and membrane filtration was used. The efficiency was evaluated in terms of color and turbidity. The influence of experimental parameters such as eluent type, eluent concentration, coagulant dose, coagulant-eluate volume, initial effluent pH, and initial effluent concentration was examined. The recommended conditions to yield maximum removal efficiency are 80 mL of eluate prepared using 3 g of M. oleifera seed powder and 1 N NaCl, under actual pH, to treat a liter of effluent. The treated supernatant from coagulation unit was passed through a sand filtration setup and a membrane filtration, with a maximum removal of color above 95%. The results affirmed the positive coagulation properties of M. oleifera, which could serve as a better alternative for chemical coagulant. The optimized treatment conditions derived for the recreated paint effluent were applied in the real paint effluent treatment. An opportunity was identified for re-using treated wastewater, as a cooling fluid and a diluting agent for lower quality paints.
The results affirmed the positive coagulation properties of M. oleifera, which could serve as a better alternative for chemical coagulant.
KeywordsPaint industry effluent Moringa oleifera Coagulation Sand filtration Ultra filtration
- APHA. (1995). Standard methods for the examination of waste and wastewater (Sixteenth ed.). New York: American Public Health Associations.Google Scholar
- Brown, J. A., & Weintraub, M. (1982). Bio oxidation of paint process wastewater. Journal of Water Pollution Control and Federation, 54(7), 1127–1130.Google Scholar
- Haung, C. P., & Ghadirian, M. (1974). Physical–chemical treatment of paint industry wastewater. Journal of Water Pollution Control Federation, 46(10), 2340–2346.Google Scholar
- Kumar, R., & Barakat, M. A. (2013). Decolourization of hazardous brilliant green from aqueous solution using binary oxidized cactus fruit peel. Bioresource Technology, 226(15), 377–383.Google Scholar
- Mohsen, A. E. L. S., Hasanin, E. A., & Kamel, M. M. (2010). Appropriate technology for industrial wastewater treatment of paint industry. American–Eurasian Journal of Agricultural and Environment, 8(5), 597–601.Google Scholar
- Rizzo, L., Gennaro, A. D., Gallo, M., & Belgiorno, V. (2008). Coagulation/chlorination of surface water: a comparison between chitosan and metal salts. Separation Science and Technology, 62, 79–85.Google Scholar
- Sengupta, B., Dey, B. K., Hashim, M. A., & Hasan, S. (2004). Micro filtration of water-based paint effluents. International Journal of Environmental Management, 8(3–4), 455–466.Google Scholar
- Shanta, S., & Kaul, S. N. (2000). Performance of evaluation of a pure oxygen-based activated sludge system treatment a combined paint industry wastewater and domestic sewage. International Journal of Environmental Studies, 58(4), 445–457.Google Scholar