•Aerated SWIS amended with biochar and sludge was effective in treating wastewater.•High removal efficiencies of COD (95%), NH4+-N (96%) and TN (86%) were obtained.•Biochar and sludge reduced N2O emissions in intermittent aerated SWISs.•Aeration enhanced amoA, nxrA, narG, napA, nirK, nirS, qnorB and nosZ abundances.
Bioresource Technology – Elsevier
Published: Feb 1, 2018
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