手冢治虫怎么读
作者：***
二甲基亚硝胺来源：《安徽农学通报》2019年第07期
扬卡洛夫
摘 要：为了研究生态补水对改善河道水质的影响，对塘西河近3年水质监测数据进行分析，结果表明：塘西河水体上游区域（Z1）高锰酸盐指数（CODMn）、总磷、总氮等各指标改善显著，下游（Z2）CODMn、总磷改善较明显，总氮受下游污水处理厂尾水等因素影响，改善效果较差；塘西河水质受季节性的影响较大，夏季水质优于冬季；降水对河道水质也具有一定的影响。因此，对于季节性城市河道的水质改善，不仅仅是依靠生态补水和加大沿岸污染的治理，减少外源输入也是改善河道水质的重要举措。
刘怀元 关键词：生态补水；水质；城市河道
中图分类号 TV85 文献标识码 A 文章编号 1007-7731（2019）07-0130-03
Abstract：Water quality grade of Tang xi River was comprehensively analyzed using th
企业改革与管理e water quality data of Tang xi River during 2016-2018，respectively.The results indicated that：In the upstream area of tangxi river，indicators such as （Z1） permanganate index（CODMn），total phosphorus and total nitrogen were significantly improved. In the downstream area（Z2），CODMn and total phosphorus were significantly improved.Total nitrogen was affected by tailwater of downstream sewage treatment plant and other factors，and the improvement effect was poor. The water quality of Tang xi river is affected by seasonal factors and is better in summer than in winter. Precipitation also has a certain impact on river water quality. For the water quality improvement of seasonal urban watercourses，it is an important measure to not only rely on ecological water replenishment，improve coastal pollution control and reduce exogenous input.
