Saddle Lake Cree Nation SIBROM

Project details

  • Installation: 2011
  • System: Biological/Reverse Osmosis (SIBROM) system with dual RO trains
  • Permeate Flow Rate: 2,765 m3/day or 32 L/s
  • Case Study: Safe Water For All (PDF)
  • Location:: Alberta

OVERVIEW

Saddle Lake Cree Nation, located in Northern Alberta, is the second most populous First Nation in Alberta, and has a police detachment, a fire hall, an employment and training centre, and numerous schools.

In 2011, the Saddle Lake Cree Nation needed to expand their existing water treatment facility to ensure it could accommodate the growing population and provide potable water to 10,000 residents. It was also essential to ensure any impact to the environment and watershed were sustainable. Much of their distribution system was poorly constructed, so having biologically stable water run through the pipes was necessary to reduce chances of contamination.

This was the first installation of a SIBROM where the bio-filter tanks were fed directly by surface water (water from Saddle Lake). After biological pretreatment, water proceeds to two (2) separate Reverse Osmosis (RO) trains which can be run simultaneously. Each RO train (unit) has a permeate water output of 16 L/s (32 L/s total) with a system recovery of 50%, allowing concentrate to be returned to the lake.

WATER QUALITY

Parameter of Interest Raw Water Permeate Guidelines
TOC (mg/l) 24 <0.5 N/A*
DOC (mg/l) 24 <0.5 N/A*
Turbidity (NTU) 7.0 <0.1 <0.1

*No guideline. Reduction required to prevent disinfection by-product formation.