Print Email Facebook Twitter Coupling high-rate activated sludge process with aerobic granular sludge process for sustainable municipal wastewater treatment Title Coupling high-rate activated sludge process with aerobic granular sludge process for sustainable municipal wastewater treatment Author Kosar, Sadiye (Istanbul Technical University) Isik, Onur (Istanbul Technical University; Kahramanmaras Sutcu Imam University) Cicekalan, Busra (Istanbul Technical University) Gulhan, Hazal (Istanbul Technical University) Cingoz, Seyma (ISKI Istanbul Water and Sewerage Administration) Yoruk, Mustafa (ISKI Istanbul Water and Sewerage Administration) Ozgun, Hale (Istanbul Technical University) van Loosdrecht, Mark C.M. (TU Delft BT/Environmental Biotechnology) Ersahin, Mustafa Evren (Istanbul Technical University) Date 2023 Abstract Achieving a neutral/positive energy balance without compromising discharge standards is one of the main goals of wastewater treatment plants (WWTPs) in terms of sustainability. Aerobic granular sludge (AGS) technology promises high treatment performance with low energy and footprint requirement. In this study, high-rate activated sludge (HRAS) process was coupled to AGS process as an energy-efficient pre-treatment option in order to increase energy recovery from municipal wastewater and decrease the particulate matter load of AGS process. Three different feeding strategies were applied throughout the study. AGS system was fed with raw municipal wastewater, with the effluent of HRAS process, and with the mixture of the effluent of HRAS process and raw municipal wastewater at Stage 1, Stage 2 and Stage 3, respectively. Total suspended solids (TSS), chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), and total phosphorus (TP) concentrations in the effluent were less than 10 mg/L, 60 mg/L, 0.4 mg/L, and 1.3 mg/L respectively at all stages. Fluctuations were observed in the denitrification performance due to changes in the influent COD/total nitrogen (TN) ratio. This study showed that coupling HRAS process with AGS process by feeding the AGS process with the mixture of HRAS process effluent and raw municipal wastewater could be an appropriate option for both increasing the energy recovery potential of WWTPs and enabling high effluent quality. Subject Aerobic granular sludgeEnergy recoveryHigh-rate activated sludgeMunicipal wastewaterSustainability To reference this document use: http://resolver.tudelft.nl/uuid:e4ef2d10-86c2-46c1-aeb1-7493ce935d58 DOI https://doi.org/10.1016/j.jenvman.2022.116549 Embargo date 2023-07-01 ISSN 0301-4797 Source Journal of Environmental Management, 325 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Sadiye Kosar, Onur Isik, Busra Cicekalan, Hazal Gulhan, Seyma Cingoz, Mustafa Yoruk, Hale Ozgun, Mark C.M. van Loosdrecht, Mustafa Evren Ersahin, More Authors Files PDF 1_s2.0_S0301479722021223_ ... rne2.0.pdf 6.3 MB Close viewer /islandora/object/uuid:e4ef2d10-86c2-46c1-aeb1-7493ce935d58/datastream/OBJ/view