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Nitrogen removal from ammonium-contaminated groundwater using dropping nitrification–cotton-based denitrification reactor
Water Science and Technology : Water Supply
A novel dropping nitrification–cotton-based denitrification reactor was developed for total nitrogen (N) removal from ammonium (NH4+)-contaminated groundwater. The nitrogen removal ability of the reactor was evaluated for 91 days. A 1 m long dropping nitrification unit was fed with synthetic groundwater containing 30 mg-NH4+-N/L at a flow rate of 2.16 L/d. The outlet of the dropping nitrification unit was connected to the cotton-based denitrification unit. The NH4+ present in the groundwaterdoi:10.2166/ws.2021.258 fatcat:wyqpu35dovhsjksflysp2xhsoe