Skip to main content

Start-Up and Initial Operation Of Singapore's 800,000 M3/Day (211 MGD) Changi Water Reclamation Plant

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The new Changi Water Reclamation Plant (CWRP) in Singapore is designed for ultimate expansion to 2,400,000 m3/day (634 mgd). Construction of the initial 800,000 m3/day (211 mgd) phase began in 2001 and will be completed in mid 2008. Designed as a compact, underground facility, the plant incorporates stacked rectangular primary and secondary clarifiers along with the anoxic step feed process. Solids processing consists of centrifuge thickening, anaerobic digestion, centrifuge dewatering, and thermal drying. A 225,000 m3/day (59 mgd) “NEWater Factory”, or Reclaimed Water Production Plant, will be constructed under a Design Build Own and Operate (DBOO) concession on top of the liquid process modules to produce high grade water for indirect potable and non-potable uses. Phased start-up of the facility began in February, 2007 and has continued through 2008. Initial performance through May, 2008 has generally met expectations, resulting in excellent performance when the plant is not hydraulically overloaded. Partial nitrification and denitrification as intended with the anoxic step feed process was also established, which provided stable treatment, avoided significant pH depression, and achieved SVI values which were generally in the 80 to 120 105 mL/g range. Sludge digestion has performed as intended. Dewatered sludge cake has not met design expectations. Nocardioform foaming of the liquid treatment process adversely impacted performance during late 2007 and 2008 and also resulted in anaerobic digester foaming. Successful start-up of the CWRP has set the stage for on-going plant optimization.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2008-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more