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T reatment of sewage plant effluent by simple nanofiitration seems to be limited by organic fouling and only possible with extensive chemical cleaning. ............................................................................................................................ I ........... and outlook ~.......................... ~.................................................................... i............................ :i::=~i/ PAc: o,s o~ HOK k :: ~ IpAC:o,~ o~ HOK ~ Flux:201/m2h i :i Jl IFlux:20 vm2h ~ Recovery:25% | ..... Cross-flow:1,5 m3/h| :i ;.*Ji JRecovery:25% i~ [Cross-Cow:;',5 m~lh ~ [Flushing:11180rnin(no bac ~ :T ].