Biological Treatment of Textile Wastewater by Total Aerobic Mixed Bacteria and Comparison with Chemical Fenton Process | ||
| Pollution | ||
| دوره 8، شماره 4، پاییز 2022، صفحه 1418-1433 اصل مقاله (736.54 K) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2022.340753.1408 | ||
| نویسندگان | ||
| MD Sabbir Hossain1، 2؛ Protima Sarker3؛ Md. Shiblur Rahaman3؛ Fee Faysal Ahmed4؛ Shaibur Molla Rahman1؛ Md Khabir Uddin* 5 | ||
| 1Department of Environmental Science and Technology, Jashore University of Science and Technology, P. O. Box 7408, Jashore, Bangladesh. | ||
| 2Graduate School of Environmental Science, Hokkaido University, P. O. Box 060-0810, Sapporo, Japan. | ||
| 3Department of Environmental Science and Disaster Management Noakhali Science and Technology University, P. O. Box 3814, Noakhali, Bangladesh. | ||
| 4Department of Mathematics, Jashore University of Science and Technology, P. O. Box 7408, Jashore, Bangladesh. | ||
| 5Water Research Center, Department of Environmental Sciences, Jahangirnagar University, P. O. Box 1342, Dhaka, Bangladesh. | ||
| چکیده | ||
| Textile effluents are highly colored for synthetic dyes, cause significant water pollution due to high pH, TDS, EC, BOD, and COD content, and are harmful to aquatic species. Among different treatment processes, biological treatment process is considered as a promising approach. In this investigation, a mixed aerobic bacterial consortium was used for the treatment of wastewater. In addition, the fenton process with a normal sand filter was used for treatment and compared with the biological method. The mean values of BOD, COD, TDS, EC, DO, and pH in the raw wastewater indicated that the effluent was highly contaminated according to Bangladesh standard (ECR, 1997). Both the biological treatment process and fenton process separately showed promising removal of pollution load. The aerobic mixed bacterial consortium reduced TDS (66.67%), EC (60%), BOD (91.67%), and COD (85.45%) and fenton process reduced TDS (74.71%), EC (55.11%), BOD (88.33%), and COD (83.63%) compared to the raw effluent bacterial consortium simultaneously degraded dyes and decolorized the wastewater from dark deep green to transparent. Color removal for the mixed aerobic bacterial process after 72 hours of aeration was 58.57% and for the fenton process with a normal sand filter was 80%. BOD and COD removal percentages for aerobic mixed bacterial consortium showed higher removal efficiency than the fenton process with a normal sand filter. Though 92 hours of aeration showed the maximum satisfactory result, aeration time could be reduced to 72 hours which also satisfied the Bangladeshi standard (ECR, 1997). | ||
| کلیدواژهها | ||
| Textile effluents؛ bioremediation؛ advance oxidation process, coagulation-flocculation, microbes | ||
| مراجع | ||
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