龙洞河水污染状况及综合防治对策研究

龙洞河为清江支流，近几年，随着入河污染物的不断增加，从上游到下游水质恶化趋势明显，河下游水质已处于超V类和富营养化状态，采用多点取样方法对恩施城区龙洞河水质进行监测分析，测定水中溶解氧、五日生化需氧量，总磷等11个项目，对水质进行了初步评价，并针对存在的问题，提出了减少排污量，优化污染治理技术以及加强生态建设等综合防治建议。

Study on the Present Situation of Water Pollwtion of Longdong River and Comprehensive Countermeasure

Longdong River is a tributary of Qingjiang River. In recent years, with increasing pollutants to the river, it is clear that the water quality has worsened from the upper to the lower reaches. The water quality of lower reaches has been in the state of over V sort and rich nutrition. The method of multi-spot sampling is used to monitor the water quality of Longdong River in the urban area of Enshi city, some data are obtained by assessing eleven items, such as the dissolved oxygen(DO),five-day biochemical oxygen demand(BOD 5) and total phosphorus(TP) in the water. The water quality is preliminarily evaluated. In view of the existing problems,some proposals are put forward, such as decreasing the quality of foul water, improving managing technique,selecting the super administer technique, and strengthening the ecological construction .