濑溪河泸县段水质评价与治理建议

本文运用综合污染指数法对濑溪河泸县段天竺寺大桥和官渡大桥上、下两个断面的水质进行现状评价和污染变化规律分析，表明濑溪河泸县段污染情况逐年恶化，超标频率和倍数都成上升趋势，枯水月份、平水月份、丰水月份分别对水体污染起着不同的作用，在丰水月份来临之前、之后的平水月份非点源污染污染突出，可见濑溪河泸县段非点源污染在濑溪河的水体污染中占有一定的比重，濑溪河泸县段水质状况不容乐观，亟待加强水质污染的防治和控制力度，并提出治理的建议。

Water Quafity Assessment and Treatment Advices for Luxian Section of Laixi River

This paper uses the integrated pollution index to evaluate the water quality status and analyze the changing rules of Laixi River in the sections of Tianzhusi Bridge and Guandu Bridge. The results show that the pollution in the Luxian Section of Laixi River is worsening year by year including the frequency of over standard and magnitude. The different season such as dry months, normal months and wet months play different roles on water pollution. The non-point source pollution highlights in normal months, so non-point source pollution accounts for a certain proportion in Lu County section of Laixi River. The pollution status of water quality is now unoptimistic and it is urgent to strengthen the intensity of prevention and control of the water pollution. Finally, suggestions concerning pollution treatment are proposed.