Tag Archive for 'water technology'

Flushing Your Toilet Will Someday Power Your Home

Retrieved from: engr.psu.edu

“Many sewage treatment plants currently use bacteria to treat wastewater. Essentially, the bacteria help clean the water by eating the organic material.

“But researchers at Penn State have found an even more productive use for the bacteria.

“Led by environmental engineer, Bruce Logan, they’ve designed special microbial fuel cells that use “bacteria to turn any organic matter directly into electricity.”

“Considering that in the United States, we use 5% of our electricity to run our water infrastructure, the breakthrough represents a chance for us to cut costs, while also curbing our reliance on fossil fuels.

“And while this is exciting news for U.S. consumers, the technology has the potential to have an even greater impact on developing parts of the world.”

Read more: Wall St Daily



Clean water bottle wins UK leg of James Dyson Award

Tim Whitehead shows off his invention

Tim Whitehead is now in the running for a £10,000 prize. Photo retrieved from: BBC

“The water bottle contains two chambers. Dirty water is put in an outer chamber and the inner chamber is plunged through it, filtering water particles as small as four microns.

“Once filtered, the water is sterilised by a wind-up ultraviolet bulb in a process lasting 90 seconds.

“A prototype was effective in killing 99.9% of bacteria and viruses.

“Professor Matthew Harrison, who is one of the judges and also director of education programmes at the Royal Academy of Engineering, commented: “Pure provides a practical solution to a real problem – how to get clean drinking water in the most hostile of conditions.

“It has the potential to make a real difference to people’s lives.”

read more: BBC

Water harvested from clouds in rural South Africa


“The life-giving liquid is the purest you could hope to taste–and it’s also free and environmentally friendly,” said Doreen Gough, media affairs manager for the University of South Africa (UNISA).

“UNISA is launching another of its fog-harvesting systems in South Africa today, this one in the country’s Eastern Cape Province.

“The university “has been engaged with a largescale research and development project on fog harvesting as an alternative source of potable water for many isolated rural communities struggling to access pure and clean water. Many of the communities where the research projects have been conducted experience scarce water supply and the villagers travel long distances to fetch it,” Gough said in an e-mail to Nat Geo News Watch.”

read more: The Palestine Telegraph

RXDisposal Solutions, LLC of Springfield Township, reduces pill pollution

“The company offers a disposal kit, soon to be released, which turns nearly all medications into an insoluble, bitter and gritty mass that remains solid so it can safely be transported to the landfill.

“No more flushing, no more lose pills in the trash and no more wastewater contamination.”

read more: Suburbanite

Desalination could comprise 10% of South Africa’s urban water supply mix by 2030

“Turton explains that desalination needs a large amount of energy and feedstock and produces perfectly clean water and brine. The downside, therefore, is twofold: the carbon emissions generated in the energy phase and the brine.”

“The ocean is an ecosystem – it is not just a body of water that is not living. By extracting water directly from the ocean, plants are disrupting the functioning of the system. There is also effluent that must go back into the ocean, which may cause a brine build-up,” says Amis.”

read more: engineeringnews

Desalination, With a Grain of Salt

“The potential benefits of ocean desalination are great, but the economic, cultural, and environmental costs of wide commercialization remain high. In many parts of the world, alternatives can provide the same freshwater benefits of ocean desalination at far lower economic and environmental costs. These alternatives include treating low-quality local water sources, encouraging regional water transfers, improving conservation and efficiency, accelerating wastewater recycling and reuse, and implementing smart land-use planning.”

read more: Pacific Institute