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• W4381056722 endingPage "164822" @default.
• W4381056722 startingPage "164822" @default.
• W4381056722 abstract "Aerobic granular sludge (AGS) is a breakthrough biotechnology of 21st century and an innovative alternative to activated sludge for treating wastewater. Concerns on long-start up periods for development of AGS and stability of granules are impeding its widespread implementation for treating low-strength domestic wastewater especially in tropical climate conditions. Addition of nucleating agents have been shown to improve development of AGS while treating low-strength wastewaters. There are no previous studies on AGS development and biological nutrient removal (BNR) in the presence of nucleating agents during treatment of real domestic wastewater. This study investigated AGS formation and BNR pathways while treating real domestic wastewater in a 2 m3 pilot-scale granular sequencing batch reactor (gSBR) operated without and with granular activated carbon (GAC) particles. The gSBRs were operated under tropical climate (T ≈ 30 °C) for >4-years to evaluate the effect of GAC addition on granulation, granular stability and BNR at pilot-scale. Formation of granules was observed within 3 months. MLSS values of 4 and 8 g/L were recorded within 6 months in gSBRs without and with GAC particles, respectively. The granules had an average size of 1.2 mm and SVI5 of 22 mL/g. Ammonium was mainly removed through nitrate formation in the gSBR without GAC. But, ammonium was removed by short-cut nitrification via nitrite due to washout of nitrite oxidizing bacteria in the presence of GAC. P removal was much higher in gSBR with GAC due to the establishment of enhanced biological P removal (EBPR) pathway. After 3 months, the P removal efficiencies were at 15 % and 75 %, respectively, without and with GAC particles. The addition of GAC led to moderation in bacterial community and enrichment of polyphosphate-accumulating organisms. This is the first ever report on pilot-scale demonstration of AGS technology in the Indian sub-continent and GAC addition on BNR pathways." @default.
• W4381056722 created "2023-06-18" @default.
• W4381056722 creator A5014175493 @default.
• W4381056722 creator A5034313542 @default.
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• W4381056722 date "2023-10-01" @default.
• W4381056722 modified "2023-10-13" @default.
• W4381056722 title "Pilot-scale aerobic granular sludge reactors with granular activated carbon for effective nitrogen and phosphorus removal from domestic wastewater" @default.
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• W4381056722 doi "https://doi.org/10.1016/j.scitotenv.2023.164822" @default.
• W4381056722 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37331394" @default.
• W4381056722 hasPublicationYear "2023" @default.
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