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Wastewater Treatment by Azolla Filiculoides: A Study on Color, Odor, COD, Nitrate, and Phosphate Removal | ||
| Pollution | ||
| مقاله 6، دوره 4، شماره 1، فروردین 2018، صفحه 69-76 اصل مقاله (932.35 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2017.236692.290 | ||
| نویسندگان | ||
| Abooali Golzary1؛ Omid Tavakoli* 2؛ Yasemin Rezaei2؛ Abdolreza Karbassi1 | ||
| 1Department of Environmental Engineering, Graduate Faculty of Environment, University of Tehran, P.O. Box 14155-6135, Tehran, Iran. | ||
| 2School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11365-4563, Tehran, Iran | ||
| چکیده | ||
| The aquatic fern Azolla, a small-leaf floating plant that lives in symbiosis with a nitrogen fixing cyanobacteria (Anabaena), is an outstanding plant, thanks to its high biomass productivity along with its tremendous rate per unit area for nitrogen-fixation. The present study investigates the potential growth of Azolla in secondary effluents for removal of COD, phosphorus, and nitrogen. Results have shown that N and P removal at 100 ppm of each component in separate medium turned out to be 36% and 44%, respectively, whereas in case of a mixed solution of these two compounds, N and P removal declined to 33% and 40.5%, respectively. Moreover, results have suggested that in the presence of phosphorus nitrogen absorption decreased. Furthermore, Azolla has revealed a high potential of COD removal by 98.8% in 28 days. Finally, Azolla may be one of the most promising agents to remove COD and treat nitrogen-free and phosphorus-rich wastewaters. | ||
| کلیدواژهها | ||
| Azolla؛ Wastewater treatment؛ COD removal؛ Nitrate and phosphate removal | ||
| مراجع | ||
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