Department of Earth Sciences, School of Sciences, Shiraz University, Shiraz, 7146713565, Iran.
Environ Monit Assess. 2020 Jul 18;192(8):532. doi: 10.1007/s10661-020-08464-2.
A comprehensive risk assessment tool may have advantages for investigating complex water quality data and for a better understanding of the ecological status of the studied systems including aquatic ecosystems. In this paper, the impact of agricultural, industrial, and domestic sources on the quality of the Kor River in Fars Province, Iran are investigated. The study developed a procedure consists of pollution index (P), water quality index (WQI), and data grouping as a useful simple tool to assist water quality management. The pollution indicators used in the development of P and WQI are 15 physical, chemical, and biological variables in the river water. According to the world guideline standards, an appropriate weight is assigned to each indicator, scores of P are determined, a composite WQI is formulated, and a water quality grouping score is proposed. Pollution risk levels along the river are highlighted using the grouping score and dominant pollution sources are determined. Results revealed that pollution sources influence the water quality indicator content so that some sites are under the high influence of sewage disposal and industrial effluents and some others under the influence of agricultural runoff. Results also provide insight into the development of better pollution control strategies for the Kor River and other aquatic ecosystems affected by industrial, agricultural, and domestic pollution sources.
综合风险评估工具可能具有调查复杂水质数据的优势，并有助于更好地了解所研究系统（包括水生生态系统）的生态状况。本文以伊朗法尔斯省的科鲁河为例，研究了农业、工业和生活污染源对其水质的影响。本研究开发了一种程序，该程序由污染指数（P）、水质指数（WQI）和数据分组组成，是一种有用的简单工具，可协助水质管理。在开发 P 和 WQI 时使用的污染指标是河流水中的 15 个物理、化学和生物变量。根据世界指导标准，为每个指标分配适当的权重，确定 P 的得分，制定综合 WQI，并提出水质分组得分。利用分组得分突出了河流沿线的污染风险水平，并确定了主要的污染源。结果表明，污染源影响水质指标的含量，因此一些地点受到污水处理和工业废水的高度影响，而另一些地点则受到农业径流的影响。结果还为科鲁河和其他受工业、农业和生活污染源影响的水生生态系统制定更好的污染控制策略提供了参考。
