Skip to main content

A Microbiological Investigation of a Point of Use Drinking Water Disinfection Technology: Solar Photo-Disinfection and its Challenges in Cambodia

Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

In rural and underdeveloped regions of the world, simple point-of-use water treatment technologies are sometimes the only option available clean drinking water. Using the sun to disinfect drinking water has become internationally known as an efficient method to treat drinking water to a quality approaching and/or surpassing commercially available bottled water. A solar disinfection microbiology study in a Cambodia based laboratory was conducted to describe this point-of-use water treatment option. Various batch experiments were conducted to scientifically assess the technology and its efficiency in handling certain typical user challenges. Utilizing a wild type strain of Escherichia coli as an indicator for pathogenic bacteria, results of the study describe “die-off” or disinfection efficiency when 500ml plastic polyethylene terphthalate (PET) bottle are filled with river water and exposed to the sun for one day. The challenges of turbidity, volume variations, absorptive or reflective surfaces, source water chemistry, and varying weather conditions are described. Regression models are developed to characterize the disinfection efficiency. Major results were that a six-log10 removal of the indicator was possible under a wide variety of conditions including: (1) moderate levels of turbidity; (2) varying reflective/adsorptive surfaces; (3) varying volumes inside the SWD bottle; (4) and under a completely cloudy and overcast day. Additionally, the turbidity disinfection trials were shown to be not attributed to a thermal effect suggesting a potential for photocatalytic action of dissolved organic matter. The study results are specific to the Phnom Penh, Cambodia location and validate other international investigations of SWD efficiency.
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: 2007-01-01

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