【摘要】 为了探究膜生物反应器（MBR）系统膜材料在运行及化学清洗过程中释放微塑料（MPs）的情况，探究了尼罗红染料对微塑料的最佳染色条件，将染色方法与扫描电子显微镜、傅里叶变换红外光谱等手段相结合对膜材料化学清洗出水微塑料进行表征分析，结果表明，尼罗红染液在质量浓度为10 mg/L，染色温度为50℃，染色时间为30 min下可以达到理想的染色效果。膜材料的微塑料释放量会随着MBR运行周期的延长而增加；同时随着清洗时间延长，膜损伤加剧，膜材料容易剥落，将加剧膜自身分解释放微塑料的风险。研究表明，MBR系统膜材料本身在使用以及化学清洗的过程中存在释放微塑料的可能，在工程应用中应注意膜清洗产生的微塑料释放问题。更多还原

【Abstract】 In order to investigate the release of microplastics(MPs) from membrane materials in membrane bioreactor(MBR) systems during operation and chemical cleaning, the optimal dyeing condition for Nile red dye on MPs was investigated. The membrane materials and MPs from chemical cleaning were characterized and analyzed by combining dyeing methods with scanning electron microscopy and Fourier transform infrared spectroscopy. The results showed that the Nile red dye solution achieved optimal dyeing effect at a mass concentration of 10 mg/L, a temperature of 50 ° C, and a duration of 30 min. The MPs release of membrane material in the MBR system will increase with the extension of the operational cycle. At the same time, prolonging the cleaning time, the membrane damage will be aggravated, and the membrane material is easy to peel off, which will aggravate the risk of MPs release from the membrane itself. The research indicated that the membrane material of MBR system may release MPs in the process of use and chemical cleaning, and attention should be paid to the release of MPs resulting from membrane cleaning in engineering applications.更多还原