Department of Fisheries, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, Iran.
Department of Fisheries, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, Iran.
Chemosphere. 2021 Jan;262:128039. doi: 10.1016/j.chemosphere.2020.128039. Epub 2020 Aug 23.
Wastewater discharge is considered to be a significant point source of microplastic (MPs) release into the marine environment. This study is the first attempt to quantify MPs released from the wastewater outfall from Bandar Abbas City into the Persian Gulf. Two wastewater discharge stations at Gursuzan and Suru were sampled. MPs were isolated by an oxidative procedure and subsequent density separation using ZnCl solution. The average MP concentration in wastewater and sludge were 70.66 (±14.12, SD) MP.35 L and 6070 (±807.25) MPs.kg, respectively at Confidence Level (CL) (95.0%). The most commonly recovered polymers were polyethylene (PE) and polypropylene (PP) in all size classes. Our findings provides a baseline of MP concentration in wastewater streams and slurry that is discharged from the Bandar Abbas wastewater treatment facility into the Persian Gulf. This highlights the need to undertake more studies at water treatment plants in the region for a realistic assessment of MP discharge into the Persian Gulf.
污水排放被认为是海洋环境中微塑料（MPs）释放的一个重要点源。本研究首次尝试量化从阿巴斯港市的污水排放口排入波斯湾的 MPs。在古尔苏赞和苏鲁两个污水排放站进行了采样。 MPs 通过氧化处理和随后使用 ZnCl 溶液进行密度分离来分离。在置信水平（CL）（95.0%）下，废水中和污泥中的 MPs 浓度分别为 70.66（±14.12，SD）MP.35 L 和 6070（±807.25）MP.kg。所有尺寸等级中最常见的回收聚合物是聚乙烯（PE）和聚丙烯（PP）。我们的研究结果为从阿巴斯湾污水处理厂排入波斯湾的污水和泥浆中的 MPs 浓度提供了基线。这凸显了需要在该地区的水处理厂进行更多研究，以对 MPs 排入波斯湾进行实际评估。
