LAUSR

In the present study, the feasibility of treating high ammonia wastewater was evaluated in a combination of aerobic granular sludge nitrification reactor (AGS-SBR) and poly(butylene succinate) solid denitrification reactor (PBS-SBR). After 90 days operation, the effluent NH4+-N and total nitrogen (TN) removal efficiencies were high of 99.6% and 99.7%, respectively. According to typical cycle, N2O emission rate in AGS nitrification process was much higher than PBS denitrification process. It was found from EEM-PARAFAC that the fluorescence intensity scores (protein-like and humic like substances) of soluble microbial products (SMP) in AGS-SBR were the significant higher than in PBS-SBR. Microbial community analysis showed that Thauera was main genus in AGS-SBR and Hydrogenophaga Simplicispira and Thiomonas were dominant genus in PBS-SBR. The obtained result implied that the combined technology is feasible to remove nitrogen compounds from wastewater to meet the stringent emission standards.