Skip to main content

WASTEWATER EFFLUENT PLUME TRACKING: TEMPORAL AND SPATIAL DYNAMICS

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

The largest Publicly Owned Treatment Works (POTW) in California emit wastewater effluent into the subsurface ocean waters off the coast. The outfalls of these wastewater treatment plants are designed to keep the discharge plumes offshore and below the surface waters to allow bacteria, heavy metals, and other pollutants to disperse with the least amount of human health risk and impact on the environment.

This paper presents the dynamics of the wastewater plume from the Orange County Sanitation District (OCSD) outfall/diffuser system (serving a population of more than 2 million) in terms of the shape and extent of the plume as a function of ocean density stratification and of current direction and speed. The wastewater plume often extended at least 10 km longshore in the direction of the current regime in the lower part of the water column. It ranged from 1 to 4 km wide, with greater widths generally farther from the diffuser outfall. Maximum plume widths ranged from 4 to 8 km but were not highly correlated with the duration, speed, and direction of the currents. The plume resided between 20 and 60 m deep, with the particulate constituents (e.g., coliform bacteria) usually somewhat deeper than the dissolved constituents. The plume frequently followed topography and moved offshore in the upcoast direction and tended to move onshore following the Newport Canyon contours in the downcoast direction usually during slower current conditions. The length of time the effluent plume was likely to persist at detectable levels varied from 0.5 to 4 days. No relationship was found between proximity of plume to shore on 10 cruises and the levels of coliform bacteria on beaches within the OCSD beach sampling universe.
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 These proceedings are not peer reviewed.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
X
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