Functionalized biofilm carriers enhanced low temperature partial nitrification/anammox (PN/A) for nitrogen removal from mainstream municipal wastewater功能化生物膜载体强化了低温下主流市政污水中的部分硝化/厌氧氨氧化(PN/A)脱氮过程Journal of Environmental Chemical EngineeringIF7.22026-02-230PRE