【作者】 金晓丹； 何义亮； 吴昊； 曹红军； 吴启明； 狄瑜； 高何凤；

【Author】 Jin Xiaodan;He Yiliang;Wu Hao;Wang Qiming;Cao Hongjun;Di Yu;Gao Hefeng;Institute of Environmental Science and Engineering,Shanghai Jiaotong University;Environmental Protection Research Institute of Guangxi;

【机构】 上海交通大学环境科学与工程学院； 广西壮族自治区环境保护科学研究院；

【摘要】 对长江河口青草沙水库水体浊度、氮和磷形态物质进行空间分布研究。结果表明,青草沙水库进口附近的浊度达到167NTU,随着库区悬浮颗粒物沉降,水体浊度、氮、磷呈现进水口处含量高而出水口处含量低的规律。浊度从进水口至出水口的去除率为93%;总氮、硝态氮和氨氮在进水口平均浓度分别为1.446、0.695、0.0929mg/L,自进水口至出水口的去除率分别为43、46和40%;总磷、总反应磷和溶解性反应磷去除率分别为63、67、75%。说明长江口水库具有较强的生态自然净化能力,对高浑浊来水的氮和磷物质具有一定净化作用,降低富营养化风险。更多还原

【Abstract】 The spatial distribution of turbidity,nitrogen fractions and phosphorus(P) fractions of reservoir in Yangtze estuary QCS reservoir were investigated.The field results showed that the settlement of suspended matter due to turbidity could lead to the deposition of the phosphorus(P) fractions,nitrogen(N) fractions in water onto the sediment surface.The concentration of turbidity was 167 NTU near the intake of reservoir,and the removal rate of turbidity from the intake to outtake of the reservoir was approximately 93%;the concentration of TN(Total N),NO3-N,NH4+-N was 1.446、0.695、0.0929mg/L,and the removal of TN(Total N),NO3-N,NH4+-N was approximately 43,46 and 40% respectively;the removal rate of TP(Total P),TRP(Total Reactive P) and PRP(Soluble Reactive P) was approximately 63,67 and 75% respectively.The reservoir functions as a primary settling tank in the deposition of suspended matters onto the sediment.Therefore,it has a good performance in treatment of high turbidity,phosphorus,nitrogen water,and reduce the risk of eutrophication in the Yangtze River estuary.更多还原