Reversibility of membrane performance and structure changes caused by extreme cold water temperature and elevated conditioning water temperature
作者： Adrianna Tikka , Wa Gao , Baoqiang Liao
DOI: 10.1016/J.WATRES.2018.12.047
关键词:
摘要: Abstract The effects of extreme cold water temperature, elevated cleaning time on membrane performance, and pore size distribution were studied using flat-sheet polyvinylidene fluoride (PVDF) membranes. Extreme temperature led to a decrease in permeability, shrinkage. use periodical warm (35 °C) conditioning could almost completely recover the permeability structure loss caused by while room (23±1 °C) recovered majority temperature. Changes performance correlate well with changes structure. Membranes periodically conditioned warmer showed higher than that at from long-term operation three months. results suggest change PVDF is reversible after conditioning, thus and/or chemical will benefit recovery regions.
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