Abstract:
Membrane technology plays a vital role in drinking water and wastewater treatments. Among a number of factors affecting membrane performance, temperature is one of the dominant factors determining membrane performance. In this review, the impact of temperature on membrane structure, fouling, chemical cleaning, and membrane performance is reviewed and discussed with a particular focus on cold temperature effects. The findings from the literature suggest that cold temperatures have detrimental impacts on membrane structure, fouling, and chemical cleaning, and thus could negatively affect membrane filtration operations and performance, while warm and hot temperatures might expand membrane pores, increase membrane flux, improve membrane chemical cleaning efficiency, and interfere with biological processes in membrane bioreactors. The research gaps, challenges, and directions of temperature effects are identified and discussed indepth. Future studies focusing on the impact of temperature on membrane processes used in water and wastewater treatment and the development of methods that could reduce the adverse effect of temperature on membrane operations are needed.
摘要:
膜技术在饮用水和废水处理中起着至关重要的作用。在影响膜性能的诸多因素中,温度是决定膜性能的主要因素之一。在这次审查中,温度对膜结构的影响,污垢,化学清洗,和膜的性能进行了回顾和讨论,特别关注冷温度的影响。文献中的发现表明,低温对膜结构有不利影响,污垢,和化学清洗,因此可能会对膜过滤操作和性能产生负面影响,虽然温暖和炎热的温度可能会扩大膜孔,增加膜通量,提高膜化学清洗效率,并干扰膜生物反应器中的生物过程。研究空白,挑战,并对温度效应的方向进行了识别和深入讨论。需要进行未来的研究,重点是温度对水和废水处理中使用的膜工艺的影响,以及开发可以减少温度对膜操作的不利影响的方法。