1998—2017年温榆河流域水质变化特征  

Analysis on the Characteristics of Water Quality Changes in the Wenyu River Basin from 1998 to 2017

作　　者：郭婧[1] 田颖 梁云平[1] 徐蘇士 赵靓[1] 陶蕾[1] 荆红卫[1] GUO Jing;TIAN Ying;LIANG Yunping;XU Sushi;ZHAO Liang;TAO Lei;JING Hongwei(Beijing Municipal Environmental Monitoring Center,Beijing 100048,China)

机构地区：[1]北京市环境保护监测中心

出　　处：《中国环境监测》2019年第4期85-92,共8页Environmental Monitoring in China

基　　金：北京(全国)水环境创新中心建设(Z181100005518009)

摘　　要：分析1998-2017年间水质手工监测结果可知,温榆河水质变化大致分为4个阶段:水质恶化-水质改善-水质稳定-水质进一步改善,最后一个阶段,污染凸显以氨氮为主。通过空间分析,温榆河上段化学需氧量主要受南沙河影响,氨氮受北沙河及南沙河影响均较大;下段氨氮主要受清河下段及坝河下段影响,而化学需氧量则受温榆河上段、清河下段、坝河下段3条河段影响。污水处理厂的建成运行、污水处理率的提高,使温榆河整体水质第一次改善,部分直排污水及污水处理厂排水标准宽松,阻碍水质进一步改善。河道清淤,加强污水收集及管网建设,以及污水处理厂提高出水标准后,温榆河水质出现第二次改善,但仍然为劣Ⅴ类。自动站雨季监测发现,非点源污染的影响不可忽略。Based on manual monitoring data of the Wenyu River during 1998-2017, the water quality changes in the Wenyu River can be roughly divided into four stages: water quality deterioration-water quality improvement-water quality stability-water quality was further improved. In the final stage, the pollution was dominated by ammonia nitrogen. Through spatial analysis. The concentration of CODCr in the upstream of the Wenyu River was significantly affected by the Nansha River and ammonia nitrogen was affected by both the Beisha River and the Nansha River. For the downstream of the Wenyu River, ammonia nitrogen was affected by downstream of the Qinghe River and downstream of the Bahe River, CODCr was affected by three river sections: upstream of the Wenyu River, downstream of the Qinghe River and downstream of the Bahe River. The whole water quality in the Wenyu River was firstly improved by the completion of the sewage treatment plant and the improvement of the sewage treatment rate. But the further improvement of the water quality was prevented by the direct discharge of sewage and the drainage standards failing to meet the national surface water standard of China. Water quality was improved for the second time by river dredging, sewage collection, the construction of pipe network and the drainage standards improved. In spite of this, it was still worse than grade V in national surface water standard. Automatic monitoring in rainy season found that impact of nonpoint source should not be ingored.

关 键 词：温榆河 地表水 河段 水质 

分 类 号：X824[环境科学与工程—环境工程]