Water Research and Technology Center, Borj Cédria Technopark, PO Box 273, Soliman 8020, Tunisia.
J Hazard Mater. 2010 Nov 15;183(1-3):98-102. doi: 10.1016/j.jhazmat.2010.06.112. Epub 2010 Aug 1.
Polycyclic aromatic hydrocarbons (PAHs) are organic compounds which may be present as contaminants in wastewater sewage sludge. Due to their toxicity and persistence in the solid phase, information should be gathered relating to their presence in sewage sludge in order to determine their contamination risks after land application. In this study, sewage sludge samples from nine Tunisian wastewater treatment plants (WWTPs) were characterized for the total content in 16 EPA-priority PAHs using an optimized extraction protocol. These WWTPs differ in the type of applied treatment and the wastewater source. Through this first assessment of PAHs in Tunisian sludges, their total concentration varied from 96 to the highest level of 7718 ng g(-1). Regardless of the source of wastewater, the highest PAH content was found in sludges deriving from untreated wastewater (natural lagooning). In addition, some correlation was found between the distribution patterns of each PAH, the type of applied treatment on one hand and the wastewater source on other hand.
多环芳烃（PAHs）是有机化合物，可能作为污染物存在于废水污水污泥中。由于其在固相中的毒性和持久性，应该收集有关污水污泥中存在的信息，以确定其在土地应用后的污染风险。在这项研究中，使用优化的提取方案，对来自突尼斯九个污水处理厂（WWTP）的污水污泥样品中的 16 种美国环保署优先控制的 PAHs 的总含量进行了表征。这些 WWTP 在应用的处理类型和废水来源上有所不同。通过对突尼斯污泥中 PAHs 的首次评估，其总浓度从 96 到最高的 7718ng g(-1) 不等。无论废水来源如何，未经处理的废水（自然塘）产生的污泥中 PAH 含量最高。此外，还发现每个 PAH 的分布模式与所应用的处理类型以及废水来源之间存在一定的相关性。
