Skip to main content

The Practical Application of Fine Time Increment, Diurnal, Nitrate Analyses Using Portable In Situ UV Spectrometers in an Effluent Dominated Urban Stream

Buy Article:

$17.50 plus tax (Refund Policy)

Or sign up for a free trial

Many wastewater facilities use a nitrifying biological process to eliminate or reduce ammonia concentrations which are toxic to fauna in their receiving water. One byproduct of this process is nitrate. Nitrate is generally non-toxic to fauna in receiving streams at levels produced by a nitrification process. However, chronic exposures of 10mg/L NO3-N, or greater, may produce toxic responses in human infants. As a result, nitrate concentrations are regulated in waters that may impact drinking water sources. Some wastewater facilities are now being required to add an additional biological process to de-nitrify effluent. While there are a number of traditional methods for measuring nitrate in water, they are not suitable for on-going, rapid analysis of wastewater or environmental waters.



Because nitrate (and nitrite) in water absorbs UV light at a specific wavelength that has little interference, it can be used to estimate nitrate concentrations. I will discuss the principles of nitrate measurement using UV spectroscopy and the various instruments that are available in the market. I will also discuss the selection, modification and application of a small portable UV spectrometer. This instrument can be placed inconspicuously in any water body, without connection to the shore. The instrument typically measures nitrate every five minutes and can save a week's worth of data for later analysis. Vital information is currently being collected on daily nitrate variation and patterns downstream from a wastewater plant; this information will be used to measure changes from baseline conditions when a major de-nitrification facility begins operation and can also provide an assessment of natural de-nitrification in a river system. The instrument(s) can also be used by a wastewater treatment facility to evaluate the de-nitrification process at various stages.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Keywords: ANALYSES; DENVER; NITRATE; SOUTH PLATTE RIVER; UV

Document Type: Research Article

Publication date: 2007-10-01

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