京杭运河(镇江段)污染现状分析  

Analysis of Pollution Status in Zhenjiang Section of Beijing-hangzhou Grand Canal

作　　者：任海鹏 REN hai - peng(Jurong environmental protection bureau, Jurong, Jiangsu 212400, Chian)

机构地区：[1]句容市环境保护局,江苏句容212400

出　　处：《污染防治技术》2017年第5期38-43,共6页Pollution Control Technology

摘　　要：文中通过对大运河镇江段的水质状况调查,采用污染综合指数的方法,剖析河流污染类型、主要污染因子和污染水平。结果表明,(1)大运河在2013—2015年期间污染情况较为严重。运河三年的全河段水质污染综合指数分别为9.178、9.073、8.445,污染状况有所减轻。其主要超标项目为总氮、氨氮、总磷、CODcr。(2)支流汇入量是京杭大运河沿程汇入水量的主要来源。九曲河、谏壁抽水引河、二郎庙岔河、肖梁河等支流的通量所占的比重较大,因此对大运河的水质影响较大,控制好这几条支流水质状况,可有效保障大运河水质达标。(3)京杭大运河(镇江段)起始段氨氮处于一个较高的浓度水平,影响大运河上游来水水质的主要因素为长江内江、以及丹徒镇和谏壁镇沿江排放的污水。断面总氮均呈上升趋势,高锰酸盐指数呈下降趋势,氨氮、总磷浓度波动变化,幅度不大。Water quality investigation of the Grande Canale in Zhenjiang section is conducted by using the method of comprehensive pollution index,analysis of river pollution type,the main pollution factors and pollution level. The results show that：（ 1）during 2013 ~ 2015,the pollution is serious,in the three years the whole river water pollution comprehensive indexes are respectively 9. 178,9. 073 and 8. 445,pollution situation eased. The main items such as the total nitrogen,ammonia nitrogen,CODcrand total phosphorus are over national standards.（ 2） the Jiuqu River,Jianbi pumping irrigation,erlangmiao Chahe,Xiao Lianghe and other tributaries of the flux of the proportion of larger,so the water quality impact on the Grande Canale is great,good control of the river water quality can effectively guarantee the quality of the Grande Canale.（ 3） Beijing-Hangzhou grand canal zhenjiang section starting period of ammonia nitrogen at a higher level,the main factors influencing the grand canal are the upstream water quality for the Yangtze river neijiang,Dantu town and Jianbi town sewage discharge along the river. Total nitrogen in the section is on the rise,permanganate index is on the decline,ammonia nitrogen and,total phosphorus concentration fluctuation change little.

关 键 词：京杭运河 水质现状 污染综合指数 

分 类 号：X522[环境科学与工程—环境工程]