Balancing Nutrients in a Reuse World

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

The Western Corridor Recycled Water Project (WCRWP) in Queensland will reclaim water from municipal effluent for reuse to reduce demand by industrial users of current sources and possibly also to replenish source water. A total of three AWTPs will be constructed to treat secondary effluent from six wastewater treatment plants to provide an ultimate reuse water supply of 310 MLD. The first project, Bundamba-A, went into service in September 2007 with an initial capacity of 20 MLD. The second phase, Bundamba-B will go into service in mid 2008 to provide an additional 40 MLD. The liquid stream process will consist of microfiltration, reverse osmosis and advanced oxidation using UV- peroxide. Unique to this project is treatment of the reverse osmosis waste stream to remove nitrogen and phosphorus prior to discharge to a brackish river. In addition, high levels of ortho phosphorus can adversely impact the RO operation due to scaling. Several nutrient reduction alternatives were considered to determine the preferred location for nutrient reduction. The recommended plan included pre-treatment of the AWTP feed water to reduce ortho phosphates to a concentration that would not result in scaling of the RO units and would minimize the quantity of phosphorus removal required in the ROC to meet the discharge permit. A storage basin will provide equalization of the ROC prior to chemical/physical treatment for phosphorus removal in a high rate solids contact clarification process. Chemical feed to the solids contact clarifiers will include bisulfite for dechlorination, caustic for alkalinity and pH control, and ferric chloride and polymer for coagulation and chemical precipitation of phosphorus. Deep bed denitrification filters will provide nitrate removal using methanol as a carbon source.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864708788803947

Publication date: January 1, 2008

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 These proceedings are not peer reviewed.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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