Labs


Pilot Plant at the J.D. Kline Water Treatment Plant

People on project:

Graham GagnonJessica Campbell

Partners:

Halifax Water

Pilot Plant at the J.D. Kline Water Treatment Plant

The pilot plant was commissioned in 2007, to help understand and ultimately optimize the current treatment practices at the J.D. Kline Water Treatment Plant.   The J.D. Kline Water Treatment Plant treats water from Pockwock Lake and serves peninsular Halifax, Nova Scotia, Canada.  The automated pilot plant was custom built by Intuitech (Utah, U.S.A.). Each of the twin pilot plant streams has three rapid mix tanks, where up to six different chemical feeds can be injected. The mixing tanks are followed by three mechanical flocculation tanks with vertical paddles. Following flocculation, the pilot plant has the ability to treat as a direct filtration or a conventional filtration plant. If conventional treatment is desired, the flocculated water then passes through a sedimentation tank with 30 adjustable plates, and into a settled water basin. The resulting sludge can be sampled or sent o a waste stream. The clarified water can then be sampled or sent on to filtration (dual media filters with anthracite and sand). The sedimentation process can also easily be bypassed to simulate direct filtration.  The pilot plant can be used to test different coagulants, mixing energies, filter backwash sequences, detention times and filtration rates.  In-line equipment is used to monitor pH, temperature, turbidity and particles counts at critical control points. 

In 2008, the pilot-plant went through a rigorous proving stage (Knowles et al., 2012), and the pilot plant has provided some fundamental understanding of how pilot-scale mixing results should be interpreted when applying to full-scale mixing (Vadasarukkai & Gagnon, 2010).  Future publications will detail the work on optimized coagulation processes and the potential of biofiltration.

The pilot-plant is maintained by a qualified water treatment plant operator, Jessica MacKay.  Jessica joined the Clean Water Laboratory in 2007, to provide technical support for the proving and continuous operation of the pilot plant.  Jessica also provides invaluable research and laboratory support for the graduate students who work at the pilot plant.

Contact Information
Jessica MacKay (J.MacKay@dal.ca)