Nero Engineering

The project included the replacement of screening and grit removal systems, the relocation of a flow splitting structure which divides flow to 3 downstream processes: membrane bioreactor (MBR), oxidation ditch, and flow equalization (EQ) basin, and the upsizing of the EQ lift station and force main. The new flow splitting structure utilizes weir gates to control the flow among the three processes. A detailed analysis of flowrates and peak events was performed to determine the best solution for handling peak flows. The evaluation connected the control strategy and lengths of the splitter box weir gates to the utilization of the EQ basin volume and sizing of the subsequent pumping from the EQ basin to accomplish goals of operation ease during both average and peak flow conditions.