Skip to main content

Membrane Bioreactor (MBR) Piloting at a Water Reclamation Plant in Los Angeles County

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

A pilot-scale MBR plant, manufactured by Zenon Environmental Inc., was operated at the Whittier Narrows Water Reclamation Plant (WNWRP) for twenty-one months. The objective of this study was to compare the long-term performance of the system, with respect to effluent water quality, to that of the WNWRP. Water quality parameters of particular interest were COD, suspended solids, turbidity, nitrogen, priority pollutants, microbial indicator organisms, and emerging micropollutants (NDMA and selected hormones). Primary effluent from the plant was used as influent to the MBR. Average COD, total suspended solids (TSS), and ammonia concentrations in the primary effluent were 330, 100, and 24 mg/L, respectively. Key findings from the study include (1) the MBR plant achieved excellent COD (96%), TSS (> 99%), and turbidity (typically <0.2 NTU) removals; (2) the MBR plant was able to achieve excellent nitrogen removal with an average effluent nitrate nitrogen concentration of 6.4 mg N/L and an ammonia nitrogen concentration typically <1 mg N/L; (3) all priority pollutants detected in the primary effluent were removed by the MBR to levels below the detection limits or to levels equivalent to that of the WNWRP effluent; (4) the MBR typically achieved >6-log removal of total coliform and fecal coliform as well as indigenous coliphage; (5) the MBR process removed approximately 80% of the NDMA and most of the selected hormones. The performance with respect to NDMA and hormone removals was comparable to that of the WNWRP despite the fact that the MBR was operated at a longer solids retention time and higher mixed liquor suspended solids concentration than the WNWRP; (6) membrane production capacity and cleaning requirements have met or exceeded manufacturer's recommendations.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 2005-01-01

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