Improving nutrient removal performance of surface flow constructed wetlands in winter using hardy submerged plant-benthic fauna systems.

ABSTRACT: Constructed wetlands (CWs) have been widely used as an ecological technology for removing nutrients from aquatic ecosystems. However, the treatment efficiency of surface flow constructed wetlands (SFCWs) in winter is generally low. To enhance the nutrient removal performance of SFCWs in winter, we developed a novel hardy submerged plant-benthic fauna system by adding Chironomus riparius (C. riparius) larvae and planting Potamogeton crispus L. in SFCWs. Compared to a system without C. riparius, the paired system greatly enhanced TN and TP removal with the average removal efficiencies of 54.73% and 94.76%, respectively. Furthermore, the paired system improved NO₃ ^--N removal efficiency by 29.51% and reached NH₄ ⁺-N remov

SUBMITTER: Guo Y 

PROVIDER: S-EPMC9092255 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature