Sensors for Monitoring Septic Tanks

We are developing an automated monitoring system to optimize the frequency of septic tank pumps.
Septic tanks are used in ~87% of rural communities across Canada; current best practice for
maintenance pumping is neither effective nor efficient as it is based on time rather than use. A
reliable monitoring system can reduce cost by minimizing the frequency of pumping (more efficient)
and avoid environmental damage associated with overflow (more effective). There are three layers
in a tank: floating scum, liquid effluent, and bottom sludge. Both scum and sludge build up over time;
if the tank is not pumped, solids will clog the outflow pipes in the connected leach field. In this
project, we will first perform field testing to determine which layer is most effective for determining
when a tank needs to be emptied. Then we will compare different sensor technologies in a lab test
setup. Thereafter, we will prototype an enclosure and a data logging system for the most effective
sensing technology. Finally we will field test the sensor prototype.

Faculty Supervisor:

Rudolf Seethaler;Alyse Hawley

Student:

Partner:

Reliable Septic Services, Inc.

Discipline:

Engineering

Sector:

Administrative and support, waste management and remediation services

University:

The University of British Columbia - Okanagan

Program: