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根据水质指数和健康风险评估评价常规饮用水处理厂的效率。

Evaluation of conventional drinking water treatment plant efficiency according to water quality index and health risk assessment.

机构信息

Department of Environmental Engineering, Engineering Faculty, Aksaray University, Aksaray, Turkey.

出版信息

Environ Sci Pollut Res Int. 2019 Sep;26(26):27225-27238. doi: 10.1007/s11356-019-05801-y. Epub 2019 Jul 18.

Abstract

The objective of this research is to investigate the effluent water quality of a treatment plant in Turkey fed from surface and groundwater, according to water quality index (WOI) and health risk assessment (HRA). In order to achieve this goal, the quality of the influent and effluent water of the treatment plant was monitored monthly from January 2017 to January 2019. Water quality parameter results were compared with the Turkish drinking water standards and the World Health Organization (WHO), revealing that all parameters were within approved limits. Principal component analysis (PCA) was applied to determine the water quality parameter impacts in the overall quality of water and the most attractive parameters were trace elements, heavy metals, NH-N, NO, and TKN. To evaluate water quality and the impacts on human health, WQI and HRA, including hazard quotient (HQ) and hazard index (HI), were used. The WQI values were calculated by taking into account PCA results. WQI results demonstrated that the influent and effluent of water treatment plant values have a small number of WQI ranking that expressed the water category was "excellent" for drinking purpose. Finally, metal contamination in influent and effluent waters was assessed and the associated health risks to rural populations were estimated for different age groups, children and adults in the service area of the treatment plant. The health risk assessment with similar to WQI results, the acute, sub-chronic, and chronic risks of trace elements was "negligible" level, i.e., to a level affecting 1 person in 1,000,000 inhabitants.

摘要

本研究旨在根据水质指数(WOI)和健康风险评估(HRA),调查土耳其一家采用地表水和地下水作为水源的处理厂的出水水质。为实现这一目标,从 2017 年 1 月至 2019 年 1 月,每月对处理厂的进水和出水水质进行监测。将水质参数的结果与土耳其饮用水标准和世界卫生组织(WHO)进行比较,结果表明所有参数均在允许范围内。应用主成分分析(PCA)确定水质参数对水质综合质量的影响,最具吸引力的参数是微量元素、重金属、NH-N、NO 和 TKN。为了评估水质和对人类健康的影响,采用水质指数(WQI)和健康风险评估(HRA),包括危害系数(HQ)和危害指数(HI)。WQI 值的计算考虑了 PCA 结果。WQI 结果表明,处理厂进水和出水的少数 WQI 等级表示水质类别为“优秀”,适合饮用。最后,评估了进水和出水水中的金属污染情况,并对处理厂服务区不同年龄组(儿童和成人)的农村人口进行了健康风险评估。健康风险评估与 WQI 结果相似,微量元素的急性、亚慢性和慢性风险处于“可忽略”水平,即影响 100 万人中的 1 人。

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