Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

A full-scale sequencing batch reactor (SBR) plant coupled with reverse osmosis (RO) membrane was evaluated in this study. The plant was operated at 1.0 to 2.6 kgCOD/m3/d and 0.6 to 1.0kgN/oxic m3/d for SBR, and 28 to 40 L/m2/hr for membrane with pressure range from 179 to 330 psi. About 74.5% of nitrogen was removed by bio treatment and the remainder was removed by RO membrane system. In bio treatment process, about 60% of nitrogen was removed by denitrification, 15% by ammonia stripping and about 3% by sludge wasting. The phosphorus seemed to be removed by chemical precipitation in SBR, and later by membrane.

Application of aerobic biological treatment to piggery waste with high COD and nutrients cause high temperature up to 44°C, which eventually inhibits activities of nitrifying bacteria. Based on this experiment, it was considered that the reactor temperature should not exceed 35°C to minimize nitrification inhibition. Most of nitrogen was converted to nitrite (NO2N) forms. Nitrite denitrification required less carbon source and additional chemicals did not need for nitrification because of suitable alkalinity recovery. Due to increase in ammonia uptake rate (AUR) and nitrite uptake rate (NUR), treatment efficiency increased.

SBR effluent was directed to RO membrane system without any intermediate treatment. Shear force added on the membrane surface prevented fouling and biological slime build-up. Consequently continuous and stable flux and salt rejection rate were achieved; and decreased flux backed up again to the optimum level through periodical flushing and chemical cleaning. As a tertiary treatment method, applied RO membrane system suggested a new way of economic polishing method of biologically treated waste without any intermediate treatment.
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: 2002-01-01

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 These proceedings are not peer reviewed.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