| Summary: | 碩士 === 國立東華大學 === 海洋生物研究所 === 105 === Wetland is a natural environment that can purify water. In the wetland, gravels can filter pollutants in water, help precipitate the suspended solids and nutrients. Through plants, algae, bacteria that utilize nutrients, the water is purified. The aim of this study is to evaluate the performance of four constructed wetlands used for secondary treatment of domestic wastewater, aquaculture wastewater and agricultural wastewater from January 2010 to September 2014 at Dapeng Bay National Scenic Area. The results show that Datan Wetlands can effectively reduce the turbidity, biochemical oxygen demand (BOD), suspended solid (SS), total organic carbon (TOC), total nitrogen (TN) and total phosphorus (TP) in wastewater, but Right Bank Wetlands removal effect is poor, and cannot reduce the BOD. Cifong Wetlands can effectively remove the TN and TP in wastewater, but inefficient in removing the SS, and the effluent’s turbidity, BOD and TOC were higher than the influent. Pengcun Wetlands can effectively remove the TN, but the TP removal effect is poor, and cannot reduce the turbidity, SS, BOD, SS and TOC.
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