Enhanced denitrification in Downflow Hanging Sponge reactors for decentralised domestic wastewater treatment

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• 作者：Catherine A. Bundy^a ; ¹ ; Dong Wu^a ; ^b ; ¹ ; Mui-Choo Jong^a ; ¹ ; Stephen R. Edwards^a ; Ziauddin S. Ahammad^c ; David W. Graham^a ; ^{david.graham@newcastle.ac.uk}
• 关键词：Decentralised wastewater treatment ; Bioreactors ; Sponge media ; Waste bypass ; Denitrification
• 刊名：Bioresource Technology
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：226
• 期：Complete
• 页码：1-8
• 全文大小：667 K
• 卷排序：226

文摘

Past Downflow Hanging Sponge (DHS) designs have displayed limited denitrification. Poor denitrification occurs due to C-limitation and excess DO in lower sponges. A raw wastewater bypass was introduced to provide additional C and reduce DO. COD and TN removal rates of >84% and ∼74% were achieved with a 30% v/v bypass. DHS reactors with bypass are suitable for decentralised treatment applications.