Nitrogen removal and N 2 O emission in subsurface wastewater infiltration systems with/without intermittent aeration under different organic loading rates.
Bioresource Technology（2017）
Abstract
•Intermittent aerated SWISs were effective in treating high strength wastewater.•Intermittent aeration improves TN removal at higher OLR up to 16.5g BOD/(m2d).•16.5g BOD/(m2d) was recommended for SWISs with 4 aerated/non-aerated cycles a day.•Aeration raised amoA, nxrA, narG, napA, nirK, nirS, qnorB and nosZ abundances.
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Key words
N2O,Subsurface wastewater infiltration system,Intermittent aeration,Nitrogen removal functional genes,Organic loading rate
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