Singapore Membrane Technology Centre, Nanyang Technological University, Singapore 637723, Singapore.
Water Res. 2010 Jan;44(1):21-40. doi: 10.1016/j.watres.2009.09.026. Epub 2009 Sep 17.
Recent efforts in the field of used water treatment and water reclamation have led to the development of a number of innovative high retention membrane bioreactor (HRMBR) systems. These systems invariably combine a high rejection membrane separation with a biological treatment. A common positive outcome of these systems is that smaller size organic contaminants are effectively retained, which facilitates their biodegradation and thus produces high quality product water. This provides the desired high level of separation, but also leads to salt accumulation with potentially adverse effects on the operations. The effects of elevated salt condition are complex, and impact on aspects covering physicochemical parameters, microbiology and membrane performance. The salt concentration factor is an important operating parameter to be optimised in the HRMBR systems. This paper aims to elucidate the important issues associated with the use of HRMBR systems under elevated salt conditions up to 50gL(-1).
近年来，在污水回用和废水处理领域的努力已经导致了一些创新的高截留膜生物反应器（HRMBR）系统的发展。这些系统总是将高截留率的膜分离与生物处理相结合。这些系统的一个共同的积极结果是，较小尺寸的有机污染物被有效地截留，这有利于它们的生物降解，从而产生高质量的产品水。这提供了所需的高水平分离，但也导致盐的积累，可能对操作产生不利影响。升高盐度的影响是复杂的，并影响涵盖物理化学参数、微生物学和膜性能的各个方面。盐浓度因子是 HRMBR 系统中需要优化的一个重要操作参数。本文旨在阐明在高达 50gL(-1)的升高盐度条件下使用 HRMBR 系统的相关重要问题。
