On July 4, the reporter learned from Tianjin Membrane Technology Co., Ltd. that it was the recommended national standard GB/T 36137-2018 hollow fiber ultrafiltration membrane and microfiltration membrane module integrity inspection method prepared by the main drafting unit. Released on May 14th, will be implemented on December 1.
The membrane module integrity test method specified in the standard can effectively check and judge the integrity of the hollow fiber ultrafiltration membrane and the microfiltration membrane module, avoid the problems of membrane filtration effect caused by product integrity defects, and the hollow fiber. The research, production, processing, storage, transportation and maintenance of ultrafiltration membrane and microfiltration membrane module have a good guiding role. The release and implementation of this standard will fill the blank of China's hollow fiber ultra-microfiltration membrane integrity inspection method standards. It is of great significance in strengthening the standardized management of the membrane market and improving economic benefits.
According to reports, membrane module quality is a key factor directly affecting the separation effect of membrane water treatment, and the integrity of membrane module is an effective means to evaluate the quality of membrane module products. Previously domestic HY/T 112-2008 "ultrafiltration membrane And its components, HY/T 061-2002 "Hollow Fiber Microfiltration Membrane Module", two of the two marine industry standards involve the integrity testing of membrane modules, but no system requirements for membrane module integrity testing; GB /T 25279-2010 "Hollow Fiber Curtain Membrane Module" standard only applies to hollow fiber curtain membrane modules, other types of membrane modules and membrane systems are not involved. Foreign standards relate to water filtration membrane system integrity testing, but only The partial test theory and method are generally mentioned, and the pressure decay rate value for determining the integrity of the membrane module is not given.