A study on submerged rotating MBR for wastewater treatment and membrane cleaning |
| |
| Authors: | Dan-Ying Zuo Hong-Jun Li Hong-Tao Liu Gui-Ping Wu |
| |
| Affiliation: | (1) Department of Civil and Environmental Engineering, Texas Technological University, Lubbock, TX, USA;(2) Environmental Engineering Laboratory, National University of Singapore, Kent Ridge, Singapore; |
| |
| Abstract: | A submerged rotating membrane bioreactor (SRMBR), with a rotatable, rounded, flat-sheet Poly(vinyldiene fluoride) (PVDF) membrane
module fixed on hollow axes and moved by an electromotor, was used for wastewater reclamation. It was found that the effluent
COD became stable and lower than 20 mg/L after one day running. The equilibrium permeate flux increased from 42.5 to 47.5
L/m2·h with the rotation speed increasing from 15 r/min to 25 r/min. Prolonging relaxation time could alleviate membrane fouling
and enhance the flux. Finally, membrane cleaning was studied. The results showed that flushing the membrane surface with water,
water/NaOH and water/NaOH/HCl recovered permeate flux to 48.4%, 83.5% and 90.2% of that of the initial operation, respectively. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
