标题：Mass Balance Study on Phosphorus Removal in Constructed Wetland Microcosms Treating Polluted River Water
作者：Wu, Haiming; Zhang, Jian; Li, Cong; Fan, Jinlin; Zou, Yina
作者机构：[Wu, Haiming; Zhang, Jian; Li, Cong; Fan, Jinlin; Zou, Yina] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, 更多
通讯作者地址：[Zhang, J]Shandong Univ, Sch Environm Sci & Engn, Jinan 250100, Shandong, Peoples R China.
来源：CLEAN-SOIL AIR WATER
关键词：Hydraulic retention time; Macrobiota; Nutrient waste; Temperature;; Vegetation
摘要：A number of studies have showed that the mass removal rates of phosphorus (P) in different constructed wetlands (CWs) varied significantly, and it is essential to quantify the contributions of major P removal processes in order to improve system design. The objective of this study was to investigate the effects of vegetation, hydraulic retention time (HRT), and water temperature on P removal from polluted river water and to quantify the contributions of different P removal pathways in surface CWs. Results showed that the average total P removal rates ranged between 2.69 and 20.84mg/(m(2)day) in different seasons and were influenced significantly by vegetation, HRT, and water temperature. According to the mass balance approach, plant uptake removed 4.81-22.33% of P input, while media storage contributed 36.16-49.66%. Other P removal processes such as microbiota uptake removed around 0.26-4.13%. Media storage and plant uptake were identified as the main P removal processes in surface CWs treating polluted river water. This illustrated the importance of selecting media and plants in CWs for future practical application.