玄武湖入湖口的悬浮颗粒物沉降调查研究  

Investigation on Subsidence of Suspended Particles in the Inlets of Xuanwu Lake

作　　者：欧阳夏骏[1] 宋永忠[1] 

机构地区：[1]南京市环境监测中心站,江苏南京210013

出　　处：《污染防治技术》2008年第4期13-15,共3页Pollution Control Technology

摘　　要：通过对玄武湖的外围入湖口及湖心的悬浮颗粒物的组成、悬浮颗粒物沉降量及沉降速率的对比实验,阐述了外源水、面源水的污染物对湖水水质的影响,并从面源、点源、水体自净能力及补给水等,促使湖水水质变化的途径入手,依据各项监测结果及对数据的分析,找出了玄武湖多次发生水污染的原因是多方面、多途径的影响结果。从监测分析发现,入湖口悬浮颗粒物沉降量高于湖心点,说明玄武湖水污染主要是受外源影响。另外还发现,入湖污水经水生植物阻滞、吸附和吸收后,其悬浮颗粒物的沉积速率和沉降量明显增大,据此认为,控制外源性污染、补充清洁水及在入湖口周围广种水生植物,是减缓湖水水质恶化,促使水质改良的有效途径。Through the comparative tests on the composition of suspended particles of the Xuanwu periphery or central lake, the settlement of suspended particles and settlement rate, the influences of extraneous source water and non - point source water on lake water quality were described. From non - point source, point sources, water supply and self- purification capacity of the lake and water quality serial number, according as the results of monitoring and data analysis to identify the Xuanwu Lake frequent causes of water pollution, the impact on water qualities are various. From monitoring and analysis found that the enter lake suspended particle deposition rate and the settlement significantly increased. Accordingly, controlling periphery pollution, adding clean water and planting all kind of aquatic plants is an effective way to slow deterioration of lake water quality and improve water quality.

关 键 词：悬浮颗粒 沉降量 沉降速率 

分 类 号：X524[环境科学与工程—环境工程] X508