Nitrogen could be removed in constructed wetland through processes including NH3 volatilization, plants uptake, matrix sedimentation and nitrification-denitrification of microorganism.

• 各种形态的氮在人工湿地系统中可以通过氨的挥发、植物吸收、介质沉淀吸附以及微生物硝化/反硝化作用等过程被去除。