贵州省部分河流水质变化趋势分析

贵州省由于在近十几年中工农业得到快速发展、人类活动范围不断扩大,均对河流水质产生了显著的影响.据1985～2000年水质监测资料对贵州省部分河流的8个断面水质及其变化趋势的分析结果表明,贵阳市南明河甲秀楼断面、遵义湘江站断面、都匀清水江油行断面水质污染在其区间呈加重态势,均为Ⅴ类或劣Ⅴ类水,主要污染物为高锰酸盐指数、总硬度、氨氮、五日生化需氧量,其余干支流断面水质污染除个别项目外无变化趋势.本文根据监测及分析结果,提出了防治水污染的建议.

Analysis on Variation Tendency of Water Quality of Partial Rivers in Guizhou Province

Fast development of economy and enlargement of human activity scope of last more than ten years have notably influenced water quality in Guizhou Province. According to the results of water quality and its variation tendency analysis on supervision data in eight sections of partial rivers from 1985 to 2000, pollution of water had became more serious in some sections such as Jiaxiulou one of the Nanming River in Guiyang City, Xiangjiang Station one in Zhunyi City, Youxing one of the Qingshuijiang River in Duyun City. The water qualities of these sections were class V or worse than class V. The main pollutants are indexes of permanganate, total hardness, ammonia and nitrogen, biological oxygen demand in 5 days. Other water pollution indexes in sections of the main rivers- and these tributaries have not changed besides very few ones. On the base of the monitoring and analyzing resuits, the article raises some suggestions about controlling water pollution.