工业废水被认为是我们宝贵的水生态中最严重的污染者之一。然而,工业废水处理厂(IWTPs)废水中存在的污染物类型尚不清楚。在这项研究中,建立了一种简单有效的化学指纹分析方法,用于检查不同工业废水及其污水接收河流之间的源汇关系。从电子产品废水中筛选出107、228、155和337种化学品,钢,纺织品,和印染厂,分别。对检测到的化学物质进行化学指纹识别,结果表明,芳香族化合物在污染物类别中最普遍(即,56、189和168在电子产品中,钢铁,和印染厂,分别)。对废水中选择的化学品进行可追溯性分析,确定了不同工业企业的特征污染物。在四种IWTPs的废水的不同工艺阶段中,68种化合物被确定为特征污染物。在84个污水接收河水特征污染物中,在来自四个IWTPs的流出物中也检测到47.6%(n=40)。有效筛选工业废水中的有机污染物并确定其来源将有助于加快工业废水处理技术的改进。
Industry wastewater is considered one of the worst polluters of our precious water ecologies. However, the types of pollutants present in wastewater from industrial wastewater treatment plants (IWTPs) are still unclear. In this study, a simple and effective chemical fingerprinting method for checking the source-sink relationships among different industrial wastewaters and their effluent-receiving river was established. 107, 228, 155, and 337 chemicals were screened out in wastewater from electronics, steel, textile, and printing and dyeing plants, respectively. Chemical fingerprinting of the detected chemicals was performed, and results showed that aromatic compounds were the most prevalent among the pollutant categories (i.e., 56, 189, and 168 in electronics, iron and steel, and printing and dyeing plants, respectively). The traceability analysis of the chemicals selected in the effluent determined the characteristic pollutants of different industrial enterprises. Sixty-eight compounds were identified as the characteristic pollutants in the different process stages of wastewater of the four IWTPs. Of the 84 effluent-receiving river water signature pollutants, 47.6% (n = 40) were also detected in the effluent from the four IWTPs. Effective screening of organic pollutants in industrial wastewater and determining their sources will help accelerate the improvement of industrial wastewater treatment technology.