辽宁省辽河流域污染治理前后枯水期河流水质对比分析

Comparative Analysis on Water Qualities of Liao River Basin in Dry Season Before and After Pollution Control

运用地表水环境评价法对辽宁省辽河流域主要河流污染治理前后枯水期的水质变化进行对比分析。结果表明,辽宁省辽河流域河流水质严重污染的历史已发生转变,地表水环境质量呈现全面持续好转趋势,首要污染物化学需氧量与氨氮浓度持续下降。

Water qualities of Liao River Basin in dry season before and after pollution control were comparative analyzod with environmental evaluation methods for surface water. The results showed that the serious pollution history of the river water quality changed. The surface water environmental quality presented a continuously comprehensive improving trend, and the primary pollutant concentration of chemical oxygen demand and ammonia nitrogen decreased continually.