November - December, 2006
Short research project conducted by A. M. Dawson, Meng EVSE (candidate), University of Regina funded by Mainstream Water Solutions.  

OBJECTIVE:
The objective of the project was to determine the effect on tannin removal when a roughing filter was added to the Mainstream system.  

RESEARCHERS:
A. M. Dawson, BSc.ES, MEng EVSE (candidate)
Dr. Yee-Chung Jin (supervisory)

BACKGROUND:
The project involved the simultaneous operation of two Mainstream systems; one with a roughing filter, one without.  Both systems were fed the same synthetically produced tannin-laden raw water.

CONCLUSIONS:
The results of the study were inconclusive as the raw water exhibited very high levels of hardness which interfered with the testing methodology.  Recommendations were provided to enable to project to continue at a future time.

Making synthetic tannin-laden feed water using peat moss.
The Mainstream bench-scale systems (one with roughing filter) treating the same tannin-laden influent water