A non-partisan, neutral perspective supporting diversity in the color of water

Tuesday, December 26, 2017

Unique Greywater Thesis

The University of Alaska Anchorage Civil Engineering program is completing some very important research on greywater reuse where the goal is not to fear greywater, but embrace it!
 
Development of a Physicochemical Greywater Reuse Treatment System for Intentional Human Contact

by Gregory Michaelson

Abstract

Some rural Alaskan communities rely on self-haul systems to get water and dispose of waste, a time and labor intensive practice. Water quantity is limited and conserved in households on self-haul systems. As a result, water wash disease rates are high in communities that lack running water and sewer. Building centralized water systems in rural communities is expensive and more difficult in cold climate regions located off the road system. The Alaska Water and Sewer challenge project investigates alternatives to centralized systems to provide sufficient water service to homes in unserved communities in rural Alaska. A prototype was built, adapted and tested for about 1 year to evaluate viability of an in-home greywater reuse system. Water quality goals were met during testing as meeting Direct Potable Reuse standards. Critical Control Points (CCPs) have been identified for this treatment system through the design development process, pathogen testing and micropollutant/water quality sampling. All testing was completed at full scale for a 4-person household using a daily water volume of 58 gallons. Recommendations have been made to integrate CCPs into system automation based on parameters used to describe treatment process efficiency. Alarms and shutoff functions need to be integrated into the system to ensure functionality and health protection by CCPs. Implementing these controls and alarms into the system will add to system robustness and protect public health for eventual installation of systems into homes. Through these efforts, we hope to help contribute to the long-term solution of improving public health by increasing water quantity and availability in rural Alaskan households.

Unfortunately, the University of Alaska Anchorage has the thesis buried behind the ProQuest Dissertations Publishing firewall. But if you have access to a university library, check it out!
* * *
One of Alaska's strengths is our pioneer role in 
environmentally sensitive development. 
~Former US Senator and Governor of Alaska Frank Murkowski


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