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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
energy
Response surface methodology approach for simultaneous carbon, nitrogen, and phosphorus removal from industrial wastewater in a sequencing batch reactor
Advances in Environmental Technology, Volume 7, No. 2, Year 2021
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Description
Wastewater reclamation involving a sequencing batch reactor (SBR) has received more attention recently due to its high nutrient removal efficiency, cost-effectiveness, and low footprint. This study attempts to develop a stable and applicable activated sludge SBR for simultaneous carbon and nutrient removal from industrial wastewater. The derived-filed data were explored by response surface methodology (RSM) to identify the impact of operational variables on the SBR performance. Optimum conditions were obtained at 4000 mg/L MLSS, 100: 8: 2 COD: N: P ratio, 40 min/h aeration time, and 40 h cycling time, which resulted in the removal of 82.53% chemical oxygen demand (COD), 89.83% TKN, 87.23% PO43--P, and 73.46% NO3--N. Moreover, the sludge volume index (SVI) and mixed liquor volatile suspended solids (MLVSS)/mixed liquor suspended solids (MLSS) ratio were 64.8 mL/g and 0.8, respectively. The maximum nitrification rate was calculated as 113.9 mg/L.d, which increased with the rise of the initial ammonium concentration. The specific denitrification rate (SDNR) was estimated in the range of 0.003-0.07 mgNO3--N/mg MLVSS.d, depicting the high potential of the SBR reactor to eliminate nitrate by granular sludge. Accordingly, the removal efficiency of the optimized system revealed a notable capability towards meeting environmental regulations. © 2021, Iranian Research Organization for Science and Technology. All rights reserved.
Authors & Co-Authors
Ling, Irene
Malaysia, Bandar Sunway
Monash University Malaysia
Younesi, H.
Iran, Tehran
Tarbiat Modares University
Zinatizadeh, Ali Akbar
Iran, Kermanshah
Razi University
Statistics
Authors: 3
Affiliations: 6
Identifiers
Doi:
10.22104/AET.2021.5093.1383
ISSN:
24766674
Research Areas
Environmental