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April 2024 Articles
Environmental Science & Engineering Magazine’s April issue article topics include: wastewater phosphorus reduction, water operator training, wastewater energy transfer for decarbonization, reuse of water treatment residuals and sludge, urban stormwater control and downspout disconnection programs, operator safety, and much more…
How to identify excessive sludge accumulation in wastewater lagoons
Here are the most common signs of excessive sludge accumulation and a simple approach to maintain optimal system efficiency and effluent quality.
Mandatory downspout disconnection programs could be a simple and cost-effective solution to I/I problems
Norton Engineering has developed an efficient and cost-effective solution to finally get these illegal, outdated connections eliminated.
Centrifuge decanter helps WWTP achieve 30% solids sludge cake
In just the first two years of operation, the Water Reclamation Facility in the City of Middletown, Ohio, installed a highly efficient decanter that reduced production time by two days a week, increased efficiency, and saves thousands of litres of chemicals per year.
Circuit Riders support water systems and water supply for communities in Northern Manitoba
A collaboration between operators, ATAP trainers, and government staff results in the creation of a tailored plan which aids operators in acquiring certification.
Consulting engineers need to learn how to help clients navigate the current climate crisis
Engineers hold the potential to shape a sustainable future through their decisions and influence.
Confined space is just one material handling challenge facing wastewater plant operators
Many treatment plants have narrow spaces everywhere, such as those commonly found at pump stations or around digester tanks.
Perfecting wastewater pretreatment for direct potable reuse
In order to ensure the highest quality water, DPR systems often use ultrafiltration membranes in place of a tertiary wastewater treatment, or as a pretreatment before storage.
Spring marks crucial test for NB biosolids composting facility
A third-party audit of the composting facility’s system in summer 2023 revealed that ongoing modifications may have eventually compromised aspects of the GORE system.
Toronto’s new wastewater energy project could be first of many as partners share experience
Property owners and energy developers in Toronto can use an existing online map to determine whether a sewer is in the vicinity of their site for a wastewater energy project.
Wetland constructed at Moncton snow disposal facility to protect waterways
Overall, results show a reduction in chloride levels between 66% to 93% when comparing water samples from the inlet and outlet of the wetland.
Edmonton effectively upgrades large‑diameter self-supported sewer line using grooved system
Wastewater pipelines are often buried underground in urban areas, but Edmonton’s system features a unique design and construction. The 900-millimeter-diameter sanitary sewer line crosses Whitemud Creek on a 232-metre length and 30-metre high self-supported pipe, referred to as “Trestle 7.”
LimeGREEN marks a decade of success in rental equipment services
The Ontario-based specialized equipment rental company’s milestone anniversary highlights a track record of reliability and a reputation for a personal touch from founder Kevin Bailey and his LimeGREEN team, who have also heard a lot of “thank yous” over their first decade in business.
Regina water expert pioneers sustainable solution to transform sludge into multi-use ceramsite
When Dr. Jinkai Xue, principal investigator at the University of Regina’s Cold-Region Water Resource Recovery Laboratory, and an associate professor in the Faculty of Engineering & Applied Science, learned that the nearby Buffalo Pound Water Treatment Plant was spending upwards of $1 million annually to transport and landfill water treatment residual stored in on-site lagoons, he set up a meeting with plant management to explore innovative reuse solutions that not only promised substantial cost savings but could significantly diminish the plant’s environmental footprint.
Urban stormwater control measures for nutrient management
Selecting stormwater control measures (SCM) for nutrient removal can be complicated given the number of different parameters contributing to nutrient pollution and that specific SCMs are known to export nutrients. Combined with multiple pollutants of concern for waterbodies, it is important to know which nutrients are impacting a receiving waterbody and review data from the International Best Management Practices Database to select SCMs that will address nutrient loads as well as other loadings.
The evolution of water and wastewater associations
Many, many years ago, I attended my first OWWA conference and noticed that a significant number of attendees had also been at the WEAO conference. So, I asked, “why in Ontario were there two separate water and wastewater associations?” For the rest of Canada, associations included both water and wastewater members. Due to this year being the first time that OWWA and WEAO have held their conferences together, I was recently asked this same question at an association meeting. My impromptu answer, based on what I could remember was, “it’s complicated.”
Casselman starts chlorine dioxide oxidation pilot to solve water’s manganese issue
The Ontario Town of Casselman is planning to move forward with a chlorine dioxide oxidation pilot project to address rising levels of manganese in the South Nation River turning the community’s tap water yellowish...
Saskatchewan’s $51M in water, wastewater funding will support 34 major projects
Major water and wastewater infrastructure funding totalling more than $51 million was announced in February for Saskatchewan to support 34 projects that range from the addition of reverse osmosis systems, to ultraviolet disinfection, and...
Peel Region says wastewater capacity expansion could support up to 47,000 new homes
Ontario’s Peel Region is investing more than $335 million to expand the wastewater treatment capacity at its G.E. Booth Water Resource Recovery Facility by 40 million litres per day.
Peel Region Council estimates that the...
US and Canada face 260,000 water main breaks annually, study says
A recent Utah State University (UTU) study created from utility survey data estimates that some 20% of water pipes across the U.S. and Canada are in need of replacement and contribute to some 260,000...
Red Deer’s nutrient management facility soon underway to reduce phosphorus
Preliminary demolition work will get underway in one month’s time for the construction of a new $19-million nutrient management facility (NMF) in Red Deer, Alberta, as local officials aim to extend the life of...
Lethbridge will present water conservation plan in April to address declining reservoirs
As drought conditions push reservoir levels across southern Alberta to their lowest levels in decades, Lethbridge city council has announced “proactive steps” to address water supply concerns.
A resolution passed at city council’s January 23...
Ontario’s Excess Soil Registry rates jump significantly despite attempt to ‘soften’
Higher Excess Soil Registry fees for users will be spread out over five years instead of three, following feedback from a consultation period, says Ontario’s Resource Productivity and Recovery Authority (RPRA). But users might...
Researchers isolate microalgae strains that capture phosphorus from wastewater for reuse
Colorado-based National Renewable Energy Laboratory researchers have identified and isolated phosphorus-hyperaccumulating algae that have the potential to capture and reuse phosphorus from wastewater before it can be discharged and cause imbalances such as harmful...
























