Laboratory analyses of nutrient release processes from Haihe River sediment

作     者：Min WU Xue-ming SUN Sui-liang HUANG Xian-qiang TANG Miklas SCHOLZ 

作者机构：Key Laboratory of Pollution Processes and Environmental Criteria of Ministry of EducationNankai University Numerical Simulation Group for Water EnvironmentTianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai University Civil Engineering Research CentreSchool of ComputingScience and EngineeringThe University of Salford 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2012年第27卷第1期

页      面：61-72页

核心收录：

学科分类：08[工学] 0815[工学-水利工程] 

基　　金：financed by NSFC(Grant No.51079068) NSF of Tianjin(Grant No.09ZCGYSF00400) the National Key-Projects of Water Pollution Control and Prevention(Grant Nos. 2008ZX0734-005-001 and 2009ZX07209-001) financially supported by The Royal Society 

主　　题：Aquatic sediment and water interaction Water quality management Nitrogen Phosphorus Salinity Dredging Water depth Light Haihe River China 

摘      要：Sediment samples were collected from the heavily contaminated Haihe River to conduct static nutrient release experiments with tap water,and to evaluate the effect of dredging depths,salinity and light on the corresponding release *** study is significant because it helps decision-makers to assess the likely impact of dredging(***) on contaminated freshwater and brackish *** concentrations of total nitrogen and inorganic phosphorus were approximately 950 mg/kg and 760 mg/kg,*** typical organic matter concentration was 8.6%.Data obtained from the nutrient leaching experiments indicated that 5cm-dredging of sediment reduced the water column total phosphorus,total dissolved phosphorus and ammonia-nitrogen concentrations *** contrast,dredging 10cm surface sediment could improve the water *** salinity values benefited the release of nitrogen and phosphorus from *** contrast to indoor experiments, concentrations of total phosphorus,total dissolved phosphorus and ammonia-nitrogen were higher for the outdoor experiments.