Study on Surface Flow Constructed Wetland Treating Slightly Polluted River Water in the High Latitude and Cold Region

Zhi Gang Zhao; Yong Xiang Zhang; Shuo Jia Peng; Zhi Yuan Li; Wei Yao Li

doi:10.4028/www.scientific.net/AMR.726-731.3501

Paper Titles

Research on Influences of Global Climate Change on Water Resources in the Yellow River Basin
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Research on Various Operation Modes of Geheyan Hydropower Station Reservoir in the Qingjiang River
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Study of Rational Development Mode for Water Resource in Arid Areas Based on the Fuzzy Comprehensive Evaluation
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Study on Calculations of Pollutant Adjustment Concentrations at Monitoring Sections in Water Function Zones under the Scene of Overproof Upstream Water
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Study on Surface Flow Constructed Wetland Treating Slightly Polluted River Water in the High Latitude and Cold Region
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Study on Water Environmental Integrated Management Modeling Platform in Zhangweinan Basin, China
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Study on Ecological Water Requirement of Luyanghu Wetland in Weinan City, Shaanxi Province
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Sustainable Water Management on Reclaimed Water Use - A Case of Tianjin
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The Grey Relational Analysis between Industrial Structure and Water Resource Consumption in Jing-Jin-Ji Region of China
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Study on Surface Flow Constructed Wetland Treating Slightly Polluted River Water in the High Latitude and Cold Region

Abstract:

Surface flow wetland with Reed planted in it was employed to treat micro-polluted water in Xinkai river, and effects of temperature, hydraulic retention time and growth of plants on the performance of surface flow wetland were studied. The results showed that COD removal of surface flow wetland was influenced by growth of plants and temperature, hydraulic retention time affected the performance of surface flow wetland obviously. NH₄⁺-N removal of surface flow wetland was excellent and stable. Most of the area of the wetland system was under anaerobic or anoxic, Concentration of NO₂^--N and NO₃^--N in effluent stayed low. The denitrification was fully conducted but nitrification became a constraining factor. TP removal performance of surface flow wetland was ordinary. When Temperature was greater than 16°C, the hydraulic retention time was greater than the 3d and plants grew well, removal efficiencies of CODNH₄⁺-N and TP were 22.45%,70.10% and 55.80% with concentration below 30.21mg/L1.82mg/L and 0.36mg/L, and the standards of Surface Water Grade V were satisfied.