Septic Tanks Research

Improving Safety of Septic Systems through Professional Operations and ‘Maintenance in Mind’

Published in Influents, 2009

Performance-based regulations rather than prescriptive standards are important to allow for the acceptance and adoption of innovations in the onsite industry.

Comparing the Performance of Prescribed Septic Tanks to Long, Narrow, Flooded Designs

Presented at WEFTEC, 2007

Side-by-side testing shows the WaterTube™ septic tank from Waterloo Biofilter produces a higher quality effluent and reduces sludge and scum accumulation compared to conventional box-shaped septic tanks.

Re-thinking Hydraulic Flow in Septic Tanks

Published in ES&E, 2005

Performance of conventional septic tanks prescribed by the CSA B66 standard can be improved by eliminating the airspace and providing a longer flow path that encourages laminar flow and longer retention time.

Sulphuric Acid Attack on Concrete Tanks

Published in OOWA Newsletter, 2005

A problem which must be addressed in the onsite industry is the corrosion and premature failure of concrete septic tanks and concrete pump tanks due to sulphuric acid.

The Effect of Household Chemicals on Septic Tank Performance

Presented at ASAE Conference, 2004

Field study results are detailed confirming that the use of household chemicals such as detergent with bleach have an adverse effect on BOD treatment within a septic tank.

Improving Septic Tank Performance by Enhancing Anaerobic Digestion

Presented at NOWRA, 2017

Septic tanks have been used for anaerobic treatment of raw sewage for well over one hundred years, and their basic design has not fundamentally changed over that time. On the other hand, there have been tremendous improvements in our understanding of anaerobic microorganisms and development of high-rate anaerobic treatment technologies particularly since the 1970’s. However, this improved technical knowledge has not yet been applied to improving the century-old septic tank.