Grant: Collaborative Research and Development Grants

A significant portion of the Canadian population relies on an on-site system for management of residential wastewater. These systems must be carefully sited, designed and installed to ensure that pathogenic microorganisms are not released into receiving surface and groundwater systems. Disinfection of effluent leaving on-site systems designed to provide secondary treatment of wastewater is often necessary, depending on the vulnerability of the receiving water system. The challenge with developing wastewater management systems for on-site residential applications is that homeowners prefer systems will minimal maintenance requirements. The objective of this proposed research project is to develop a passive flow sand filter that can be used to disinfect effluent from on-site wastewater treatment systems. Working in partnership with Brookfield Concrete Ltd., the project team will conduct a series of bench and pilot scale experiments to determine the optimum sand media, loading rate and dosing regime for reliable disinfection of secondary treated residential wastewater. This project will lead to the development of a passive, low maintenance, disinfection system that could allow Brookfield Concrete to expand operations in the area of manufacturing and installing on-site wastewater technologies. The development of a low cost, robust disinfection system for on-site wastewater applications will help reduce the risk of transmitting pathogens in rural environments. In addition, this project will involve training opportunities for three highly qualified personnel.