Long-term bioaugmentation of a carrier enhanced duckweed-based wastewater treatment system via the addition of activated sludge and denitrifying phosphate-accumulating bacterium - Yonggui Zhao; Ruidong Ma; Xixi Li; Jinquan Li; Tianning Liang; Wei Li; Junjun Chang; Changqun Duan (Ecological Engineering, 2026)