Paper mill biosolids reuse through integration into hydroseed mixtures

Sludge, a waste component of the paper making process, while typically placed in landfills, has the potential for a value-added end use in the capacity as a component in the hydroseeding process replacing the typical cellulosic shredded additive utilized to bind the hydroseed mixture and reduce movement once spread.
The case study industry, Port Hawkesbury Paper LP (PHP), produces over 7 tons/ hr of sludge at a wetness value of approximately 70% which currently augments Nova Scotia Power Point Tupper’s biomass burner with excess being landfilled. The goal is to remove the need for landfilling while concurrently creating a usable feedstock/ ingredient in a pre-existing process.
Trials will take place to determine the feasibility for sludge as both a tacking agent as well as the affects for growth on various plant types. Additionally, the need for pre-treatment to mitigate the presence and effects of trace contaminants will be investigated.

Faculty Supervisor:

Adam Donaldson;Margaret Walsh

Student:

Partner:

Port Hawkesbury Paper LP

Discipline:

Engineering

Sector:

Agriculture; Manufacturing

University:

Dalhousie University

Program: