Application of UV Disinfection to achieve Enterococci Removal at a Trickling Filter Plant

$17.50 plus tax (Refund Policy)

Buy Article:

Abstract:

The City of Leavenworth, KS operates a wastewater treatment plant with an average daily capacity of 16.54 MLD (4.38 MGD) with a peak flow rate of 104.98 MLD (27.50 MGD). The plant currently uses trickling filters to remove organics (BOD) and suspended solids. In 2010 the State of Kansas (KDHE) issued a discharge permit that required disinfection be incorporated into the plant and that a plan be developed to provide nutrient removal. Collimated beam testing was conducted during the month of October 2010. Results of the testing indicated that a fluence (UV dose) of 600 J/m2 would be needed to achieve compliance with either the E, coli permit compliance or future enterococci limits. To confirm the transmittance data, measurements were collected using an on-line HACH UVAS transmittance sensor. This data indicated values more in line with typical values observed from trickling filter plants. Design transmittance values were developed that resulted in a UVT of 38 percent. Chemical testing was examined as a potential for increasing the transmittance resulting in a reduction in the cost and size of the UV system. The results of these preliminary tests indicated, with chemical addition, that a higher UVT could be used for design.

Keywords: Collimated Beam; Trickling Filter; UV Disinfection; UV-C

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864711802713018

Publication date: January 1, 2011

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 These proceedings are not peer reviewed.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
  • ingentaconnect is not responsible for the content or availability of external websites

Tools

Favourites

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect 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