Abstract: At present, some problems exist in domestic already running membrane method sea water desalinization systems; especially, in the sea water desalinization systems using ultrafiltration as pretreatment, the problems are more serious. Depending on the field test investigation on sea water ultra filtering membrane of a power plant in Shandong, the State Nuclear Electric Power Planning Design & Research Institute had completed the performance verification and comparison of different brands ultra filtering membranes of the power plant and obtained the related experimental data, which are helpful for selection of ultra filtering membrane.

Key words: sea water desalinization membrane method, pretreatment, ultra filtering membrane, field test