State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
J Hazard Mater. 2012 May 30;217-218:286-92. doi: 10.1016/j.jhazmat.2012.03.026. Epub 2012 Mar 19.
Phenols pose a risk to the environment and to human health. Phenols found in rivers mainly originate from sewage treatment plants (STPs). In this paper, analytical procedures, based on deconvolution technology and retention time locking technology, were investigated to simultaneously identify and determine the concentrations of fifty different phenols in sewage water and effluents. Seventeen different phenols were found in sewage and five - including two regulated phenols (phenol and 2,4,6-trichlorophenol) and three un-regulated phenols (2-chlorophenol, 2,5-dichlorophenol and 2,4-dichloro-3-ethyl-6-nitrophenol) - were identified in effluents of five STPs. A number of processes undertaken in five STPs were also investigated. These processes can be used to remove phenols at efficiency levels of between 88.95% and 99.97%. Among the processes tested, a combination of anaerobic/anoxic/oxic (A(2)/O), continuous microfiltration (CMF), ozone oxidation (O(3)), and chlorination, appeared to be the best option for the removal of key phenols. Among the five phenols identified in effluents, 2,5-dichlorophenol (1.89 μg/L) and 2,4-dichloro-3-ethyl-6-nitrophenol (22.6 μg/L) pose the greatest ecological risk to receiving waters.
酚类对环境和人类健康构成威胁。河流中发现的酚类主要来自污水处理厂（STP）。在本文中，研究了基于解卷积技术和保留时间锁定技术的分析程序，以同时识别和确定污水和废水中五十种不同酚类的浓度。在污水中发现了十七种不同的酚类，在五个 STP 的废水中鉴定出了五种 - 包括两种受管制的酚类（苯酚和 2,4,6-三氯苯酚）和三种不受管制的酚类（2-氯苯酚、2,5-二氯苯酚和 2,4-二氯-3-乙基-6-硝基苯酚）。还研究了五个 STP 中进行的多个过程。这些过程可以以 88.95%至 99.97%的效率水平去除酚类。在测试的过程中，厌氧/缺氧/好氧（A(2)/O）、连续微滤（CMF）、臭氧氧化（O(3)）和氯化的组合似乎是去除关键酚类的最佳选择。在废水中鉴定出的五种酚类中，2,5-二氯苯酚（1.89μg/L）和 2,4-二氯-3-乙基-6-硝基苯酚（22.6μg/L）对受纳水体构成最大的生态风险。
