A Successful Study of the Rejuvenation for Deteriorated RO Membranes with Innovative Chemicals
The new rejuvenation chemicals treatment is introduced in this paper.This chemical treatment can repair the deteriorated RO membranes, and recover the salt rejection ratio immediately.In the past, such kind of rejuvenation methods have been developed and reported only with table test basis and pilot plant test basis.This report describes the feature of the newly developed rejuvenation chemical treatment for the performance deteriorated SWRO membranes.The new rejuvenation chemicals (hereafter RC) have totally different features compared with the ones previously referred.The RC features are: 1) On site treatment.It dose not need to unload the membranes from the pressure vessels.2) RC is applied only after cleaning.The continuous dosing of RC chemicals is not necessary.3) RC chemicals are based on the food additives grade.So it provides safe handling for the plant maintenance works.RC improved the rejection of SWRO membrane which was deteriorated by NaC1O up to 92.5% froom 83.3%.We concluded that RC is effective for SWRO same as BWRO.
deterioration oxidation RO repairing chemical
Taeko Nakamura Takahiro Kawakatsu Kunihiro Hayakawa Yusuke Matoba Katsumi Matsumoto
Kurita Water Industries,Ltd (KWI)
国内会议
2015(第十届)青岛国际脱盐大会暨全国冶金节水与废水利用技术研讨会
青岛
英文
6-8
2015-06-29（万方平台首次上网日期，不代表论文的发表时间）