集成膜过程污水深度处理工艺

介绍了集成膜过程及其在污水深度处理方面的应用．集成膜过程是将超遽／微遽与反渗透(或纳滤)相结合，形成能够满足各种回用目的的污水深度处理集成工艺．PVDF、PP、PE、PES等超滤／微滤膜，抗污染反渗透复合膜具有化学稳定性高、耐污染、装填密度高等特点，适宜于规模化污水处理．污水处理用超滤／微滤膜以中空纤维为主，系统技术采用了低压运行、频繁(气水、透过液)反冲、气水冲洗等抗污染工艺，能够维持稳定的通量、运行维护费用较低、产水质量稳定．二级出水的集成膜系统工艺已成熟并得以广泛推广，针对原废水的集成膜工艺(膜生物反应器 反渗透)还需要进一步的工程化研究．

Integrated membrane systems for wastewater reclamation

Integrated membrane systems (IMS) and their applications in depth treatment of wastewater were reviewed. IMS integrated ultrafiltration/microfiltration or MBR with reverse osmosis processes, which could be designed for different fields of wastewater reclamation. The membrane polymers for UF/MF should be chemically stable, antifouling, and strong in physics, PVDF, PP, PE and PES were chosen. The new generation of antifouling TFC RO membranes also have above advantage. The common configuration of UF/MF membranes for wastewater is hollow fiber, and the systems also related antifouling design, such as low pressure operation, air-flush, permeate back-flush, and compressed air back-flush, then the performance of the systems could keep high and stable flux, low cost for maintenance and operation, and high quality of products. Different IMS for secondary effluent has already commercialized. The IMS for raw wastewater, MBR+RO, needs more research on engineering for practical application.