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Asahi-America April 2024

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…

lagoon cells

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.
downspouts

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Norton Engineering has developed an efficient and cost-effective solution to finally get these illegal, outdated connections eliminated.
Flottweg

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

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.
Global critical mineral demand graph

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.
OZ Lifting

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.
DPR water treatment consists of many stages, including primary, secondary, and sometimes tertiary wastewater treatment

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.
This large pad is laid out to have eight compost windrows 50 metres in length

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 Western Hospital

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.
constructed wetland

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.
Trestle 7 bridge

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 tanks

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.
Dr. Jinkai Xue

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 graphic

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.
Recollections – Pollution Control Association of Ontario

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.”
manganese discoloration

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...
water tower replacement

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...
GE Booth wastewater capacity expansion

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...
USU pipes study

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...
Aerial of Red Deer Downtown

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...
tap water conservation

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...
Excess Soil Regulation

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...
Revolving Algal Biofilm System

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...