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Application of Electrochemical Disinfection Process Using Aluminum Electrodes for Efficient Removal of Coliforms from Wastewater | ||
| Pollution | ||
| دوره 10، شماره 1، فروردین 2024، صفحه 629-643 اصل مقاله (1.58 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/poll.2023.368051.2135 | ||
| نویسندگان | ||
| Amir Nabi Bidhendi* 1؛ Nasser Mehrdadi2؛ Abdolreza Karbassi2 | ||
| 1Department of Environmental Engineering, Aras International Campus, University of Tehran, Jolfa, Iran | ||
| 2Graduate Faculty of Environment, University of Tehran, Tehran, Iran | ||
| چکیده | ||
| In this work, it was attempted to evaluate and demonstrate disinfection effectiveness of an electrochemical process to entirely remove coliform from wastewater effluent following secondary treatment. For the tests, an experimental bench-scale batch electrochemical cell was constructed, and aluminum electrodes were employed in the electro-disinfection reactor. In the electric disinfection phase, wastewater samples were put in the reactor/disinfector and a direct current (DC) was applied to it. According to findings, a significant decrease occurred in the total number of coliforms in the treated wastewater, and a high improvement occurred in the effluent properties. At a contact time of 15 min and a current density of 5.5 mA/cm2, led to a bacterial killing effectiveness of 97.7% or above. As the current density and contact time increased, a general increase occurred in the bacterial killing efficiency, and the effect of the two above-mentioned factors was much greater than the effect of salinity. Moreover, according to the experimental data, the removal efficiency of chemical oxygen demand (COD) and total suspended solids (TSS) by the aluminum electrodes were 78.50% and 99.93%, respectively. The findings indicate the applicability of the proposed electrochemical treatment to wastewater effluent. Nevertheless, to be able to apply this system at an industrial scale in the future, it is necessary to conduct more research into the optimum operation conditions and make an in-depth comparison of energy consumptions between the electrochemical treatment and the conventional approaches. | ||
| کلیدواژهها | ||
| Electrochemical disinfection؛ E. coli؛ Wastewater؛ Aluminum | ||
| مراجع | ||
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