The performance of two flat-sheet membrane modules in a submerged membrane bioreactor(MBR)for spiramycin wastewater treatment was compared through a 120 d experiment.During 0-80 d,both the flux and specific flux of the membraneⅡ(MemⅡ) were higher than those of the membraneⅠ(MemⅠ),but the reverse was true during 81-120 d due to the irreversible fouling of MemⅡ.The average removal rates of COD,protein and carbohydrate by MemⅠwere 30.50%,14.03% and 39.51% respectively,and by MemⅡ were 29.81%,11.12% and 37.36% respectively.There was no significant difference between MemⅠ and MemⅡ(p=0.05) on removal of organic matters.The apparent molecular weight(AMW) distribution and turbidity of the two membranes permeates did not show a significant difference either.Composition analysis of the membrane chemical cleaning solutions indicated that these two membranes were mainly fouled by organic components.Based on the techno-economic analysis,MemⅠ is more suitable for treating spiramycin wastewater.

The sources,hazards,bail-out measures,and treatment technologies for marine and coastline polluted by marine oil spill are thoroughly reviewed.Currently,the traditional treatment technologies are mainly used for marine oil spill.Therefore,it will be the focus of making and implementing the emergency treatment measures more quickly,as well as developing and promoting application of new technologies for marine oil spill in the future.