宁波中心城区典型河道水质的时空变化趋势分析  

An Analysis on the Spatio-Temporal Water Quality Variation Trend of Typical Waterways in Central Ningbo

作　　者：石予白[1] 陈青扬[2] 李诚[1] 马少华[1] 秦志伟[1] 

机构地区：[1]宁波卫生职业技术学院,宁波315100 [2]浙江万里学院,宁波315100

出　　处：《上海环境科学》2017年第5期193-196,210,共5页Shanghai Environmental Sciences

基　　金：宁波市软科学基金项目,编号:2015A10052

摘　　要：通过对宁波市中心城区6条典型河道水质指标在2013-2016年的各年平均数值分析,结合综合污染指数评价法,探讨了氨氮（NH_3-N）、总磷（TP）、溶解氧（DO）、化学需氧量（COD）、五日生化需氧量（BOD5）和高锰酸盐指数（COD_（Mn））含量的时空变化趋势。结果显示,氮磷等有机物污染是引起宁波城区河道水质污染的主要因素;经过治理,各河道水质的污染程度得到有效控制,特别是甬新河和毕家河的水质已达到Ⅳ类水体的要求。Through an analysis on the annually average water quality levels of six typical rivers in the central Ningbo City in the period of 2013-2016 and combined with the comprehensive pollution index evaluation method, spatio-temporal changes in the contents of ammonia-nitrogen, total phosphorus, dissolved oxygen, chemical oxygen demand, five-day biochemical oxygen demand and permanganate value were discussed. The results showed that the organic nitrogen and phosphorus compounds were the main factors to result in water pollution of the urban waterways. Through the rehabilitation, the waterway pollution levels have effectively been under control, especially the water quality of Yongxin River and Bijia River has reached the Category IV functional water body requirements.

关 键 词：水污染 趋势分析 综合污染指数 城市河道 宁波市 

分 类 号：X835[环境科学与工程—环境工程]