Optimization of Various MBR Systems for Water Reclamation
Optimization of Various MBR Systems for Water Reclamation
Source : https://www.usbr.gov/tsc/
AUTHOR(S): Samer Adham, Ph.D., James F. DeCarolis
ABSTRACT
This project evaluated the performance of MBR systems from four leading suppliers including US Filter Corporation/Jet Tech Products Group, Zenon Environmental Inc., Ionics/Mitsubishi Rayon Corporation, and Enviroquip Inc./Kubota Corporation during reclamation of municipal wastewater. During pilot testing, the affect of various operating conditions including feed wastewater source (e.g. raw or advanced primary effluent) flux, HRT, and SRT on MBR performance was evaluated. In addition, latest generation RO membranes from two leading suppliers (Saehan Industries Inc. and Hydranautics) were tested during operation on MBR effluent as a final polishing step for salt removal. Lastly, a cost analysis was performed to determine capital and O&M costs associated with MBR water reclamation facilities ranging in capacity from 0.2-10 MGD. Results from this study showed that each MBR system operated successful on advanced primary effluent wastewater containing polymer and coagulant. This finding is significant as it increases the number of suppliers and feed water sources municipalities can choose to meet reclamation needs using the MBR process. In addition, each MBR achieved excellent removal of particulate (effluent turbidity <0.1 NTU), organic (effluent BOD5<2 mg/L) and microbial contaminates (total and fecal coliform LRV 4-6). In addition, valuable cost information was generated showing a significant cost savings for MBR systems designed to operate on advanced primary effluent as opposed to raw sewage.
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