Pilot studies for reclamation of municipal used water: Comparison of MBR-RO and ASP-MF-RO process

I&EC 66

Jian-Jun Qin, jjqin@cawt.sui.com.sg1, Kiran A. Kekre1, Maung Htun Oo1, Guihe Tao1, and Harry Seah2. (1) Centre for Advanced Water Technology, Singapore Utilities International Pte Ltd, The Toh Tuck Comples, 80/82 Toh Guan Road East, #C4-03, Singapore 608575, Singapore, (2) Singapore Public Utilities Board of Singapore, Singapore
The membrane bioreactor (MBR) is a combination of activated sludge process (ASP) and membrane separation. MBR has advantages of small foot-print, producing consistently high quality of effluent and less sludge disposal, etc. The objective of the pilot studies was to compare a new MBR-RO process to ASP-MF-RO process for reclamation of municipal used water. The pilot results showed that the new MBR-RO process demonstrated the capability of producing the same or more consistent product quality (in terms of TOC, NH4 and NO3) compared to the conventional ASP-MF-RO process in reclamation of domestic sewage. RO membranes in the MBR-RO process could be operated at 22 Lm-2h-1 without CIP during the whole study period of five months, which was 30% higher than that (17 Lm-2h-1) in the ASP-UF-RO process. It was concluded that the MBR-RO process could be a better option for production of high grade water from municipal used water.
 

IEC Poster Session
8:00 PM-10:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Industrial & Engineering Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007