水质评价方法改进研究

Research on the Improvement of Water Quality Evaluation Method

本研究以某河流的水质评价为例,当污染物年内分布不均匀且不同污染物的时程分布有较大差异时,传统水质优劣程度模型不能准确反映污染物的实际超标状况,使得评价结果过于乐观。首先计算各次水质监测的评分值,而后按代表时长加权平均,计算水质综合评分值,通过逐次监测评价和时长加权平均,建立了改进的水质优劣程度模型,有效地解决了年均值不能准确反映污染物的实际超标状况,为以后水质评价分析提供了科学参考依据。

In this study,the water quality evaluation of a river is taken as an example.When the annual distribution of pollutants is uneven and the time-history distribution of different pollutants is greatly different,the traditional water quality model cannot accurately reflect the actual state of pollutants exceeding the standard,which makes the evaluation results too optimistic.This study firstly calculates the score values of each water quality monitoring,and then calculates the comprehensive water quality score based on the length-weighted average of the representative time.Through the successive monitoring evaluation and length-weighted average,an improved water quality model is established.It can effectively solve problem that the annual average cannot accurately reflect the actual situation of pollutants exceeding the standard,which provides a scientific reference for future water quality evaluation and analysis.