精品文档---下载后可任意编辑MBR 处理生活污水中操作条件对膜污染速率的影响的开题报告摘要：膜生物反应器（MBR）已成为一种有效的处理生活污水的技术。然而，在实际应用中，膜污染问题仍然是制约 MBR 应用和推广的主要问题之一。因此，为了进一步完善和优化 MBR 处理生活污水的性能，本文进行了一系列实验讨论，探讨了不同操作条件对膜污染速率的影响。实验结果表明，MBR 系统的稳态反应时间对膜污染速率具有明显的影响。随着稳态反应时间的延长，膜污染速率逐渐下降。此外，膜污染速率还受到曝气量及污泥浓度的影响。曝气量的增加会促进生物膜的生长和代谢活动，从而降低膜污染速率。而随着污泥浓度的增加，MBR 系统中的污泥染料也会增加，导致膜污染速率加快。因此，本文建议在实际应用中，应注意控制 MBR 系统的稳态反应时间、曝气量和污泥浓度等操作条件，以最大限度地减少膜污染速率，保证 MBR 系统的稳定性和长久的运行。关键词：膜生物反应器；生活污水；膜污染速率；稳态反应时间；曝气量；污泥浓度。Abstract：Membrane bioreactor (MBR) is becoming an effective technology for treating domestic wastewater. However, membrane fouling is still one of the main problems that restrict the application and promotion of MBR. In order to further improve and optimize the performance of MBR in treating domestic wastewater, a series of experiments were conducted in this paper to explore the effects of different operating conditions on membrane fouling rate.The experimental results showed that the steady-state reaction time of the MBR system has a significant effect on the membrane fouling rate. As the steady-state reaction time increases, the membrane fouling rate gradually decreases. In addition, the membrane fouling rate is also affected by the aeration rate and sludge concentration. Increasing the aeration rate can promote the growth and metabolic activity of biofilms, thus reducing the membrane fouling rate. With the increase of sludge concentration, the sludge dye in the MBR system will 精品文档---下载后可任意编辑also increase, leading to the acceleration of membrane fouling rate.Therefore, it is recommended to control the operating conditions such as steady-state reaction time, aeration rate and sludge concentration in the actual application, so as to minimize the membrane fouling rate, ensure the stability and long-term operation of the MBR system.Keywords: Membrane bioreactor; domestic wastewater; membrane fouling rate; steady-state reaction time; aeration rate; sludge concentration.
