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News and Opinion

Coverage of sewage sludge since September 9, 2020.

FOREST INK: Reducing wood ash in landfills by enriching soil

"...I always had a problem deciding where to put the ashes from the shop stove because I had heard about toxins from household items. After a little research I found out that ash from most natural wood products is OK as a soil amendment, but we should be concerned about human-altered wood products. The first source is the Canadian Wood Ash Chemistry Database which contains information on wood ashes from 21 Canadian biomass boilers: 10 pulp and paper mills and 11 bioenergy cogeneration facilities..."

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The Harmful Effects of Microplastics and 10 Ways You Can Prevent Pollution Nature Canada

"...A single load of laundry can release up to 700,000 microfibres, which can end up in our water in two ways. Firstly, these fibres bypass the wastewater treatment plant and flow into the water. Secondly, these fibres make their way into waterways through runoff as they are spread on agricultural land through sewage sludge..."

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Fertilizer turning Europe's farms into massive reservoirs of microplastics

"...The sludge that is created through sewage treatment processes is rich in nutrients like phosphorous and nitrogen, making it an excellent source of fertilizer for agriculture. But not all that it contains is good for the environment, with a new study demonstrating how the material acts as a vehicle for huge amounts of tiny plastic fragments to enter soils, so much so the authors suggest Europe's farms could be acting as the world's largest reservoir for microplastics pollution. Sewage sludge serves as an appealing and sustainable source of fertilizer, for both large-scale agriculture operations and home gardeners..."

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Metro Vancouver's first biosolids dryer will help region manage increase in sewage sludge

"...On Oct. 29, the Metro Vancouver authority passed its spending budget for the coming year, making way for new projects, including a new facility that will transform sewage sludge into tiny, dry pellets..."

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Landfill in India: An extremely useful bacterium was discovered here.

"...Internationally outlawed Since 2004, the Stockholm Convention on Persistent Organic Pollutants has regulated the handling of such long-lived environmental toxins. Switzerland ratified the agreement in 2003, but all these substances are already in the environment - and finely distributed. HBCD is found in sewage sludge, in fish, in air, water and soil..."

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New algorithm could help identify COVID-19 outbreaks in neighbourhoods using wastewater data

"...Currently, municipalities such as the City of Ottawa have been collecting samples of untreated wastewater or sewage sludge and performing manual tests to determine the viral load within the samples. Researchers and public health officials have been using this data to predict a rise or fall in reported COVID-19 cases within the whole city..."

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Cleaner air, less soil pollution: Unintended but beneficial side effect of Clean Air Act

"...Removal of pollutants from the air, or atmospheric deposition, is a natural cleaning mechanism. However, the removed toxic matters don't just disappear on the Earth. China's Soil Pollution Survey released in 2014 shows that 19..."

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Drugs used to treat HIV and flu can have detrimental impact on crops

"...Such compounds get into soils when they are irrigated with contaminated surface water, treated or untreated waste water, sewage sludge and biosolids..."

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Salt-tolerant bacteria with an appetite for sludge make biodegradable plastics

"...The United States generates seven million tons of sewage sludge annually, enough to fill 2,500 Olympic-sized swimming pools. While a portion of this waste is repurposed for manure and other land applications, a substantial amount is still disposed of in landfills. In a new study, Texas A&M University researchers have uncovered an efficient way to use leftover sludge to make biodegradable plastics..."

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Sewage spills from Hartland Landfill into park

"...In an emailed statement, Elizabeth Scott, deputy project director for the CRD’s wastewater treatment project, said assessments are underway..."

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Pipe leaks residual waste from Hartland Landfill into Saanich park

"...On Oct. 13, nearby residents of the Hartland Landfill were informed that a pipe had failed, leaking residual solids, or sewage sludge, into Mount Work Regional Park..."

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Kamloops' biosolids being composted in Princeton

"...The City of Kamloops is transporting its treated sewage sludge, also known as biosolids, to Princeton for composting, which in turn has helped to grow flowers, spruce up fields and reclaim worksites around Kamloops..."

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Academic Research

Recent peer-reviewed papers about sewage sludge relevant to the latest news.

Fate of Emerging Pollutants During Anaerobic Digestion of Sewage Sludge

"...Organic micropollutants (OMPs) enter municipal wastewater treatment plants (WWTP) and tend to accumulate in sewage sludge, regardless of their sorption properties..."

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Ultrasonic-Assisted Feedstock Disintegration for Improved Biogas Production in Anaerobic Digestion: A Review

"...Biogas generation is described in relation to the ultrasound-assisted disintegration of dairy industry waste, hybrid food and municipal wastes, olive mill wastewater, rice straw, tannery wastewater, meat processing sludge, hybrid industrial waste municipal sewage sludge, and lignocellulosic biomass..."

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Surfactants: combating the fate, impact, and aftermath of their release in the environment

"...The residual surfactants and their breakdown products are dispersed in the environment predominantly via the disposal of sewage and land application of sewage sludge..."

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Revision of the Most Harmful Organic Compounds Present in Sewage and Sludge

"...In these processes, which are usually carried out in wastewater treatment plants (WWTPs), large quantities of toxic and highly heterogeneous sludge are generated, the proper management of which is a major challenge..."

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The Impact of Fragrances on Soils

"...Of these compounds, the polycyclic and nitromusks are not readily degraded in wastewater treatment plants and, therefore, their concentrations are dominant in the sewage sludge and reclaimed wastewater..."

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Study of the Potential for Energy Use of Biogas From a Wastewater Treatment Plant To a Medium-Sized City: A Technical, Economic

"...As energy demand grows, linking wastewater treatment to electrical energy production through biogas from anaerobic digestion becomes an attractive alternative from both technical and economic perspectives..."

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An Innovative Technology to Minimize Biological Sludge Production and Improve Its Quality in a Circular Economy Perspective

"...Over the last few years, thermophilic aerobic processes proved to be effective in minimizing the production of sludge within wastewater treatment plants (WWTPs)..."

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Biodegradability of water treatment sludge influenced by sewage sludge, focusing its use in agriculture as soil conditioner

"...The chemical/biochemical oxygen demand ratio indicated the presence of less biodegradable compounds in the water treatment sludge compared to sewage sludge..."

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