کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6465501 | 1422952 | 2017 | 6 صفحه PDF | دانلود رایگان |
- Substantial bioelectrochemical denitrification was noticed under closed circuitry.
- The designed bioelectrochemical DNT system performed at low C/N ratios.
- Sequential integration of ANT & DNT resulted in remarkable multi-pollutant removal.
An attempt was made to cohesively assess the aerobic nitrification treatment (ANT) and bioelectrochemical denitrification treatment (DNT) of real-field pharmaceutical wastewater. The ANT resulted in the removal of 73% ammonium and 78.5% organic carbon content. Subsequently, the outlet of ANT reactor was fed to DNT reactor and the relative influence of external circuitry was investigated. The DNT reactor operated with closed circuit mode (CCM) resulted in ~83% of nitrates and % ~61% of organic content removal even at low C/N ratio of 2.18. The other pollutant concentrations viz., phosphates, sulfates and total dissolved salts were also significantly removed by both ANT and DNT processes. In this study, a sequential integration of both ANT and DNT processes exhibited high potential for self-sustained energy-positive nutrient removal.
Schematic view of (A) ANT (aerobic nitrification treatment) reactor and (B) DNT (denitrification treatment) reactor (1: nitrifying organisms, 2: Anode Oxidizing Bacteria, 3: Nitrate reducing bacteria, P1 & P2: Pumps).147
Journal: Chemical Engineering Journal - Volume 326, 15 October 2017, Pages 715-720