When the system was stable ,the removal of COD was about 95%, the removal of TN was above 45% and the removal of turbidity was about98%.Research results suggested that the kind of B membrane module form could prevent end pollution effectively and lighten the attenuation of membrane flux to some extent . Furthermore, the kind of B membrane module form had almost the same COD removal rate , TN removal rate and power consumption as the kind of A membrane module form. At the same time , B was slightly better...