杜邦DuPont™ IntegraTec™ Modules SFP-2880超滤膜UF膜更换案例6:电子行业晶圆清洗废水SFP-2880更换(颗粒污染导致膜失效)

 

杜邦DuPont™ IntegraTec™ Modules SFP-2880超滤膜UF膜更换案例6:电子行业晶圆清洗废水SFP-2880更换(颗粒污染导致膜失效)

某半导体企业晶圆清洗废水处理系统,SFP-2880超滤膜运行16个月,出现膜通量下降35%,跨膜压差升至0.18MPa,经检测,因预处理滤芯破损,大量微小晶圆颗粒进入超滤系统,导致膜孔堵塞,膜丝污染,常规清洗无法恢复,需更换膜组件。更换要点:更换前,更换预处理滤芯,检查管路,确保无颗粒杂质进入;拆除旧膜组件,对膜架进行精密清洗,去除内壁残留颗粒;新SFP-2880超滤膜装入前,用超纯水浸泡4h,去除膜表面杂质;装入后,反洗、正洗至出水颗粒数≤10/mL、浊度≤0.05NTU,合格后投入运行;更换后,建立预处理巡检制度,定期更换滤芯,避免颗粒污染。更换后,超滤系统运行稳定,出水水质满足晶圆清洗废水回用要求,为后续反渗透系统提供稳定进水。


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