Closing the loop on circumpolar community water cycles

Theme 1. Environmental protection
Session Name 1.5 Sanitation in small Arctic communities
Datetime Sep 05, 2018 03:20 PM - 03:30 PM (UTC +3)
Presentation Type Oral
Author(s) Nicholas Ashbolt (University of Alberta, Canada), David Shoults (University of Alberta, Canada), Yang Lui (University of Alberta, Canada)
Abstract text

Globally and within North America, many circumpolar communities lack adequate quantities of water for potable and non-potable purposes. Given the remoteness and low population density of most circumpolar communities, conventional wastewater treatment (WWT) is neither economically feasible or practical. Additionally, traditional WWT practices fail to recover valuable nutrients, energy, and water resources that could contribute to a more sustainable future. Keeping greywater (some 70 % of sewer flow and most of the thermal heat) separated from blackwater (most of the nutrients and imbedded energy) at the source allows for optimal resource recovery and treatment efficacy, which is being demonstrated for blackwater treatment at the Alberta Resource Recovery Centre (ARRC) in Edmonton, Canada. In addition, we are evaluating a community-scale facility to treat source-separated greywater using FiltraLiteTM unsaturated filtration for pre-treatment and an AquaBackTM distillation process to provide potable quality recovered water. Using indigenous staphylococci, spiked bacteriophages, and other faecal indictors we will evaluate an in-situ risk-based performance testing framework as part of developing appropriate water safety plans for the management of such systems.

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