Skip to main content


Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial


The paper describes design and operational considerations for the largest SBR plant in the world presently being constructed in Dublin, Eire for a population equivalent of 1.8 million. Site constraints, keeping the existing primary treatment going and life cycle costs dictated the design in an open competition. Stacked SBR's could fit on the site and allowed construction while keeping the present plant operational. Life cycle costs over 20 years demanded that the overall energy balance be taken into account as well as the quantity of sludge produced. The combined sewers with flat grades required high rate primary treatment. Partial nitrification was required. denitrification was dictated by the low alkalinity. Only about 50% of the wastewater will be nitrified while the remainder will get only high rate treatment. The primary and secondary sludge will be passed through a heat hydrolysis process to increase gas production and improve dewaterability thus reducing the sludge mass produced as well as the water associated with the sludge since this must be evaporated. The higher sludge breakdown with heat hydrolysis will make the plant independent of outside energy for sludge digestion and drying. The operation of the plant during storm flows and with one unit out will be described.

Document Type: Research Article


Publication date: 2001-01-01

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 These proceedings are not peer reviewed.

    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
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree 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