Aeration pipe design for free bubbling hydrodynamic optimization of flat sheet MBRs

Wastewater treatment in large-scale novel corrugated-sheet MBR

“…The aeration conditions were same for both modules with 2.5 L/min of aeration delivered with pulsing at 1 Hz. The pulsing of the air flow has previously been found to be beneficial [27,28]. 200 mV electricity was continuously supplied by a stabilized voltage supply, current was recorded by ammeter, and the rheostat resistance was set to be 100 ohms.…”

“…The fouling mitigation is closely related to shear stress, which has been studied in multiple previous work [7,19,28]. Hence the shear stress induced by two-phase flow was carefully studied for the CS membrane format.…”

“…Currently, this new CS-MBR is applied into large-scale water treatment in Beijing, Taiyuan and Shaanxi province of China. The corrugation on membrane surface in the new CS-MBR creates hydrodynamic flows that are at least as complex as the flow in normal FSMBR [25][26][27][28]. Moreover, it has been unclear how hydrodynamics and fouling control effect varied in CS-MBR comparing to those obtained in FSMBR [19,29].…”