Design, operation, performance evaluation and mathematical optimization of a vermifiltration pilot plan for domestic wastewater treatment
| Autor: | S.J. Hashemian, Shahnaz Ghasemi, M. Mirzaie, M. Ashrafnejad, Atefeh Hasan-Zadeh, S.R. Shahnemati |
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| Rok vydání: | 2020 |
| Předmět: |
media_common.quotation_subject
Population Sand filter Sewage Septic tank 02 engineering and technology 010501 environmental sciences 01 natural sciences Chemical Engineering (miscellaneous) Turbidity education Waste Management and Disposal 0105 earth and related environmental sciences media_common education.field_of_study business.industry Process Chemistry and Technology Chemical oxygen demand Environmental engineering 021001 nanoscience & nanotechnology Pollution Wastewater Environmental science Sewage treatment 0210 nano-technology business |
| Zdroj: | Journal of Environmental Chemical Engineering. 8:103587 |
| ISSN: | 2213-3437 |
| DOI: | 10.1016/j.jece.2019.103587 |
| Popis: | The present study shows the approach developed and employed to wastewater treatment utilizing the vermifiltration technique in a region with a population of approx. 280 people. The domestic sewage from the residential area accumulated in the septic tank was fed into the system designed based on the combination of the sand filter and the vermifilter with the optimum loading rate of 2m2 per day for 45 days. The pH, electrical conductivity, chemical oxygen demand, turbidity and nitrate concentration of wastewater were measured before and after vermitreatment for the mentioned period. The results demonstrated that the unique combination of the vermifiltration system with the sand filter was able to reduce the electrical conductivity, chemical oxygen demand, nitrate, and turbidity with removal efficiencies of 80, 80, 60, and 90%, respectively. The quality of the treated wastewater complies with environmental standards. Besides, the computational and mathematical modeling of experimental parameters with all the statistical details related to their prediction and optimization have been investigated. The simultaneous modeling and optimization of the experimental parameters as a multi-objective optimization problem have been proposed. The compatibility of statistical results with the experimental results confirmed to complete and apply them. |
| Databáze: | OpenAIRE |
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