Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City
Municipal wastewater is one of the largest volumes of wastewater which contains various organic compounds from proteins and fats to carbohydrates and nucleic acids. Municipal wastewater of Behshahr city (Mazandaran, Iran) was evaluated using aluminum sulfate and iron chloride as chemical coagulants...
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| Format: | Article |
| Language: | English |
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Hamadan University of Medical Sciences
2021-12-01
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| Series: | Avicenna Journal of Environmental Health Engineering |
| Subjects: | |
| Online Access: | https://ajehe.umsha.ac.ir/PDF/ajehe-8-110.pdf |
| _version_ | 1797670183130628096 |
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| author | Sakineh Tabaki Fatemeh Ardestani |
| author_facet | Sakineh Tabaki Fatemeh Ardestani |
| author_sort | Sakineh Tabaki |
| collection | DOAJ |
| description | Municipal wastewater is one of the largest volumes of wastewater which contains various organic compounds from proteins and fats to carbohydrates and nucleic acids. Municipal wastewater of Behshahr city (Mazandaran, Iran) was evaluated using aluminum sulfate and iron chloride as chemical coagulants and pectin and sodium alginate as natural ones. Biological oxygen demand was investigated at different temperatures and coagulant concentrations. The fraction of full factorial statistical method and Qualitek-4 software were applied for designing experiments and analyzing the results to determine the optimal conditions for achieving the highest reduction in wastewater organic load and biological oxygen demand. In the case of biological oxygen demand, the optimal condition was achieved at 25°C, using 1, 0.02, 1.5 and 1 g/L of aluminum sulfate, sodium alginate, iron chloride and pectin, respectively. Under the optimal condition, the percentage of biological oxygen demand reduction was equal to 34.5%. Maximum BOD removal of 40.9% was obtained at 25°C using aluminum sulfate, sodium alginate, iron chloride, and pectin at concentrations of 0.6, 0.02, 1.5, and 6 g/L, respectively. The contribution of aluminum sulfate, sodium alginate, iron chloride, and pectin concentration in biological oxygen demand removal of the studied wastewater was 3.8%, 22.4%, 16.3%, and 14.4%, respectively. Coagulation temperature and aluminum sulfate concentration with approximately 42.7% and 3.8% contribution values were determined as the most and the least effective factors in biological oxygen demand reduction. |
| first_indexed | 2024-03-11T20:56:02Z |
| format | Article |
| id | doaj.art-a7044c25fac747f29103b20c809e69e1 |
| institution | Directory Open Access Journal |
| issn | 2423-4583 |
| language | English |
| last_indexed | 2024-03-11T20:56:02Z |
| publishDate | 2021-12-01 |
| publisher | Hamadan University of Medical Sciences |
| record_format | Article |
| series | Avicenna Journal of Environmental Health Engineering |
| spelling | doaj.art-a7044c25fac747f29103b20c809e69e12023-09-30T10:06:15ZengHamadan University of Medical SciencesAvicenna Journal of Environmental Health Engineering2423-45832021-12-018211011510.34172/ajehe.2021.14ajehe-4201Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr CitySakineh Tabaki0Fatemeh Ardestani1Department of Chemical Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, IranDepartment of Chemical Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, IranMunicipal wastewater is one of the largest volumes of wastewater which contains various organic compounds from proteins and fats to carbohydrates and nucleic acids. Municipal wastewater of Behshahr city (Mazandaran, Iran) was evaluated using aluminum sulfate and iron chloride as chemical coagulants and pectin and sodium alginate as natural ones. Biological oxygen demand was investigated at different temperatures and coagulant concentrations. The fraction of full factorial statistical method and Qualitek-4 software were applied for designing experiments and analyzing the results to determine the optimal conditions for achieving the highest reduction in wastewater organic load and biological oxygen demand. In the case of biological oxygen demand, the optimal condition was achieved at 25°C, using 1, 0.02, 1.5 and 1 g/L of aluminum sulfate, sodium alginate, iron chloride and pectin, respectively. Under the optimal condition, the percentage of biological oxygen demand reduction was equal to 34.5%. Maximum BOD removal of 40.9% was obtained at 25°C using aluminum sulfate, sodium alginate, iron chloride, and pectin at concentrations of 0.6, 0.02, 1.5, and 6 g/L, respectively. The contribution of aluminum sulfate, sodium alginate, iron chloride, and pectin concentration in biological oxygen demand removal of the studied wastewater was 3.8%, 22.4%, 16.3%, and 14.4%, respectively. Coagulation temperature and aluminum sulfate concentration with approximately 42.7% and 3.8% contribution values were determined as the most and the least effective factors in biological oxygen demand reduction.https://ajehe.umsha.ac.ir/PDF/ajehe-8-110.pdfbiological oxygen demandcoagulationmunicipal wastewatertaguchi approach |
| spellingShingle | Sakineh Tabaki Fatemeh Ardestani Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City Avicenna Journal of Environmental Health Engineering biological oxygen demand coagulation municipal wastewater taguchi approach |
| title | Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City |
| title_full | Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City |
| title_fullStr | Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City |
| title_full_unstemmed | Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City |
| title_short | Evaluation of Natural and Chemical Coagulants Performance in Treatment of Municipal Wastewater of Behshahr City |
| title_sort | evaluation of natural and chemical coagulants performance in treatment of municipal wastewater of behshahr city |
| topic | biological oxygen demand coagulation municipal wastewater taguchi approach |
| url | https://ajehe.umsha.ac.ir/PDF/ajehe-8-110.pdf |
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