FIG. 5.
AOB-targeted T-RFLP electropherograms for liquid samples collected from the 4-day retention tanks (A to D) and a biofilm sample from the pH 8 conventional coagulation system (E). Panel A is for the pH 8 conventional coagulation system, and panels B through D are for the pH 7, 8, and 9 enhanced coagulation systems, respectively.