HOME >> BIOLOGY >> NEWS
Wastewater could treat itself, power city

The energy stored in Toronto's municipal wastewater could be harnessed to run water treatment facilities and contribute power to the city grid, says new U of T research.

The study, published in the August issue of the Journal of Energy Engineering, is the first to measure the energy content of the raw municipal wastewater in the Ashbridges Bay, North Toronto, Highland Creek and Humber plants. The research revealed that the wastewater contained enough organic material to potentially produce 113 megawatts of electricity or close to 990 million kilowatt hours a year.

"With a 20 per cent recovery of that potential energy into electricity, the wastewater treatment plants could produce enough electricity for their own operation," says civil engineering professor David Bagley, who conducted the research with lead author and PhD candidate Ioannis Shizas. "Any recovery of potential energy above that can be returned to the grid."

Bagley and Shizas used bomb calorimetry, a technique that measures the heat content of materials, to determine the amount of energy stored in wastewater's organic matter. The city plants currently use aerobic treatment, a process by which microbes decompose organic matter in the presence of oxygen. By using anaerobic digestion instead, in which microbes decompose matter without oxygen, the process' byproduct of biogas - methane-rich gas with an energy content approximately 75 per cent that of natural gas - could become a valuable energy source in the future.

"We're moving towards a future where we see our wastewaters and other wastes as resources," says Bagley. "If electricity costs go up, like they have in places like California, this could be a cost-effective and renewable energy source."


'"/>

Contact: Prof. David Bagley
bagley@ecf.utoronto.ca
416-978-0125
University of Toronto
20-Sep-2004


Page: 1

Related biology news :

1. Landmark agreement between Samoa and UC Berkeley could help search for AIDS cure
2. Circulation of disaster myths in Haiti could hinder appropriate disposal of bodies
3. New study indicates arsenic could be suitable as first-line treatment in type of leukaemia
4. Marijuana use could cause tubal pregnancies
5. Gene chips research in cotton could lead to superior variety
6. Groundbreaking research could ignite new solutions to heat transfer in nano-devices
7. Bullish chemical could repel yellow fever mosquitoes
8. Termites could hold the key to self-sufficient buildings
9. Sugar-coated sea urchin eggs could have sweet implications for human fertility
10. Identifying tick genes could halt disease, bioterrorism threat
11. Modest climate change could lead to substantially more and larger fires

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/6/2019)... ... June 05, 2019 , ... ... exclusive financial advisor to Pathologists Bio-Medical Laboratories (PBM) on its recent acquisition by ... pathology platform that provides services to more than one dozen hospitals and surgery ...
(Date:6/4/2019)... ... 04, 2019 , ... Most preclinical EEG visualization platforms offer ... usually based on variations of amplitude, frequency or spike train detection. In the ... to the complexity and variability of the signal, and automation tools are used ...
(Date:5/31/2019)... (PRWEB) , ... May 29, 2019 , ... ... configurations on Mac, Windows and mobile, announces the launch of version 13.1. The ... the latest Android Management API, and supports Apple’s spring release functionality. Version 13.1 ...
Breaking Biology News(10 mins):
(Date:5/15/2019)... Pa. (PRWEB) , ... May 15, 2019 , ... Milton ... Year in recognition for his work within the biomedical industry, where he is changing ... improved medical devices. , “William Harding epitomizes the vision of our founders – ...
(Date:5/14/2019)... EGG HARBOR TOWNSHIP, N.J. (PRWEB) , ... May ... ... premier manufacturer of custom built, helium-based leak testing instruments for the Pharmaceutical, Biotechnology, ... a completely new Heliumleak.com company website. The redesigned website aims to improve LDA’s ...
(Date:5/8/2019)... ... ... Standing at 16.2 hands, Atlas is on the large side for a Quarter Horse. ... among other activities. When loping around a corner in late 2017, Atlas tripped and ... to only being able to walk. Fortunately Atlas’ owner, Kelly, sought the opinion of ...
(Date:5/4/2019)... ... May 03, 2019 , ... More than three thousand ... Association, the scientist and ufologist Urandir Fernandes de Oliveira, last Thursday (25), during ... results of some research carried out by the association, in partnership with scientists ...
Breaking Biology Technology:
Cached News: