膜分离技术已经成为国际上市政污水和工业废水处理的核心技术。十年来清华大学化学工程系在先进膜材料制备及应用技术研究上开展了大量工作，以膜材料配方设计、膜材料先进制造、膜组件设计与应用为主线，突破多个技术难题和瓶颈，实现了热致相分离（TIPS）法高性能聚偏氟乙烯（PVDF）中空纤维膜的工业化。首先，基于对TIPS法成膜过程的热力学及动力学研究，制备出具有大通量、高强度、亲水性好的PVDF微孔膜；接着，有机结合材料加工和单元操作，形成PVDF中空纤维膜先进制造技术；最后针对不同的工业环境和市政要求，开发出不同规格的高性能膜组件。研究成果表明TIPS法突破了传统非溶剂致相转化法的限制，可以作为市政污水和工业废水处理的首选膜材料制备技术。

Nowadays membrane technology has been widely employed in the treatment of industrial wastewater and municipal sewage. In the last decade， plenty of work focused on the preparation and industrialization of advanced polyvinylidene fluoride (PVDF) membranes with excellent performance has been carried out by the Chemical Engineering Department in Tsinghua University， which follows the line of preparation formula design， advanced production and membrane module development. This paper reviewed the history information about these researches. Firstly， PVDF membranes with good performance were prepared via thermally induced phase separation (TIPS) method based on thermodynamic and dynamic researches on the membrane formation process. Secondly， advanced production of PVDF hollow-fiber membrane was achieved by an effective combination of material processing and unit operation. Finally， different modules were designed and fabricated according to the characteristic of PVDF membrane prepared via TIPS method and different application situations. The results show that the PVDF membranes prepared via TIPS method break through the traditional phase separation limitation and exceed performance expectation； as a result TIPS method can be the top option for wastewater treatment.