Assessment of aeration performance and energy consumption of different biological wastewater treatment systems for small communities in Ontario

Attached growth wastewater treatment processes such as the rotating biological contactor (RBC) have been recognized as more energy efficient compared to suspended growth processes. Hannah Environmental Equipment Inc. specializes in producing high energy efficient RBC systems providing high modular flexibility suitable for various plant sizes. The proposed project aims to assess the application of RBCs in the Canadian environment and compare that to current secondary wastewater treatment technologies in terms of energy efficiency, treatment performance, and environmental impact.

SPT-based Methods for Estimating Installation Torque and Capacity of Helical Piles

Helical piles are extensively used across Canada in various engineering applications. Current design methods estimate the axial capacity of helical piles using soil strength parameters when site investigation is available. Alternatively, helical piles can be designed from an empirical torque correlation when installation torques are available. However, it will be more valuable to the industry to have direct design approaches based on geotechnical site investigation.

Integrated Optimal CLT Building Design Considering Energy Performance and Structural Performance

This research proposed a method to conduct optimal CLT building design, which has minimum CLT usage and minimum operating energy consumption. This is a multidisciplinary research pushing the boundary of current definition of optimal design for each disciplinary to another level. With the developing of Building information modeling and automized simulation-optimization technology, the design of building will evolve to an interdisciplinary design in this decade, and this research demonstrate the benefit and application of integrated design.

Next-Gen Amplified Sustainable Agriculture (NASA) – Its’s About Space

To mitigate risks of global malnutrition, hunger, and conflict; food production should become more efficient and sustainable. Controlled Environment Agriculture (CEA) can produce higher yields at reduced spatial and environmental footprints. This control improves management of key elements like water, nutrients, and nutritional outcomes. These advantages come with a cost however; of which energy is among the greatest. Greenhouses and vertical farms can have significant thermal management requirements, and increasingly, very large electricity demands.

Flexural behaviour of strengthened prestressed hollow-core slabs with bonded and unbonded prestressed carbon fiber reinforced polymer (CFRP) plates under various prestress levels...

The overall objective of this project is to enhance the strengthening efficiency of prestressed hollow-core slabs (PHCS) by using prestressed CFRP plates. More specifically, this project aims to investigate the behavior of the PHCS elements strengthened with prestressed CFRP plates. The application of the innovative patented anchor system developed at the University of Waterloo offers a good platform to facilitate the strengthening process in an efficient and cost effect way.

Development of mathematical models/applied AI for estimation of compressive strength of concrete using non-destructive testing methods

The proposed project aims to apply artificial intelligence methods to augment in-place non-destructive testing technologies in order to reduce or eliminate the need for intrusive methods (i.e. concrete core extraction) for concrete strength estimation. The proposed approach is based on the SonReb method, which combines two non-destructive testing technologies, namely ultrasonic pulse velocity and rebound hammer, for assessing subsurface and near-surface concrete properties.

A new design approach for mine haul road pavements with stabilized layers

Currently, the design method of haul road pavements cannot address the rolling resistance under the effects of stabilizers in pavement design. To address this, the overall objective of this research is to develop a new design approach using finite element modeling for mine haul road pavements with stabilized layers. In particular, the prediction of rolling resistance will be addressed in this new design approach. The results derived from the proposed investigation will strongly benefit the performance of truck haulage (both trucks and haul roads) in Canada’s mining sites.

Combination of multi-horizon models for demand forecasting

This project aims to develop a retail demand forecasting model that can both handle the long-term and short-term forecasting, and adjust its parameters as more data come in. General long-term prediction models are relatively precise because the context often remains same over time, but can not quickly adapt to unforeseen events, like the global pandemics. It is then necessary to develop model with multi-horizon perspectives. With the understanding and results achieved by this project, accurate and real-time improvement solutions could be proposed and implemented.

Effect of mixture proportions and constituents on the material and structural performance of ECC link slabs

Concrete bridge decks have joints, which are created because of the method used to build a bridge structure. These joints allow water and other deleterious materials to pass through the bridge deck corroding the deck and the supporting girders. Link slabs are provided to conceal these joints. A link slab is a thin slab made of special concrete called ECC. The main ingredient of ECC is fly ash which comes from coal-fired thermal plants. These plants emit a large amount of pollutants. Hence, Canada and many other countries have decided to decommission all coal-fired plants.

Investigation of effectiveness of sewage-based activated carbon (SBAC) for removing poly- and perfluoroalkyl substances (PFASs) from aqueous environmental media

Poly- and perfluoroalkyl substances (PFASs) are groups of contaminants that have received much attention due to their frequent detection in the environment and potential adverse health effect on humans and animals. PFASs can be removed from water using adsorption processes. Adsorbent produced by pyrolysis of sewage sludge (SBAC) offers a promising sustainable solution for removing PFAS contamination in environmental water (e.g., stormwater, wastewater). This research will investigate the effectiveness of SBAC in removing mixture of PFASs from environmental water.