Archive for the 'graywater' Category

Olympics kept from going brown by watering cans and recycled sewage water

Retrieved from: The Telegraph

“Gardeners are also preparing to use “grey water” – domestic waste water – to help irrigate the million square meters of meadows, wetland and woods at the East London site.

The emergency measures are being drawn up ahead of Thames Water’s hosepipe ban, which comes into force on April 5 as the worst drought in 30 years spreads across England.

“But the gardens around the main events, which are meant to provide an attractive backdrop for athletes and spectators, may be badly affected by the drought.

Soil moisture levels in areas of the South East of England are now lower than the spring before 1976 when most gardens and parks went brown.

“The Olympic “ecological park” is supposed to bring back wildlife to the area. But the Environment Agency has warned that birds, frogs and dragonflies will struggle to survive this summer without enough water.”

Read more: The Telegraph

Water Central to Control of Japan Nuclear Plant

FUKUSHIMA

“Nearly a year after the March 11 earthquake and tsunami sparked triple meltdowns at reactors here, the taming of Fukushima Daiichi has become in large part a quest to control water.

“Water is crucial to the continued safety and stability of the Fukushima Daiichi plant, even after reactor temperatures fell at the end of last year to a level at which little radioactivity is being emitted. Plant operator Tokyo Electric Power Co. is still injecting hundreds of thousands of gallons into the reactors every day to keep them from overheating again. Because that water and groundwater—now contaminated—is leaking out of the reactors at an estimated 10,000 tons a month, cleaning it up and storing the excess is a constant challenge.

“Tepco has to keep bathing the nuclear reactors in cooling water until the fuel is removed. And until Tepco can plug the leaks and cracks in reactor piping and buildings, contaminated water will keep welling out. Officials estimate it will take six years to plug the leaks and 25 to remove the fuel.”

Read More: http://online.wsj.com/

Wasting the Wastewater

Wastewater treated with chlorine at a plant in Fort Worth. While the reuse of such water in industry and on golf courses has become familiar, scientists say that such recycling water will also be crucial to the drinking supply someday.

Retrieved from: NY Times

“Each day, American municipalities discharge enough treated wastewater into natural sources to fill Lake Champlain within six months. Growing pressure on water supplies and calls for updating the ancient subterranean piping infrastructure have brought new scrutiny to this step in the treatment process, which is labeled wasteful and unnecessary by a spectrum of voices.

“As the world enters the 21st century, the human community finds itself searching for new paradigms for water supply and management,” says a report released this month by the Water Science and Technology Board of the National Research Council, a division of the National Academy of Sciences. The report investigates the potential for establishing a more resilient national water supply through the direct recycling of municipal wastewater.

“Law and practice have always been that water goes back into a river or into groundwater or the ocean before it returns for further treatment,” said Brent Haddad, founder and director of the Center for integrated water research at the University of California, Santa Cruz, and a member of the committee that wrote the report. The critical question, he said, is “whether that natural stage of treatment is actually an efficient stage of treatment.”

“Sixteen experts representing industry, government, and research fields in the social sciences and hard sciences collaborated over three years to produce the study, examining everything from pathogenic risks to public attitudes about reuse.

“The committee ultimately concluded that the reuse of municipal wastewater can safely and significantly increase the nation’s available water resources – potable and non-potable – without intermediate discharge into the natural environment. “The technology for treating wastewater is good enough that we don’t need that intervention,” Dr. Haddad said.”

Read more: NY Times

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

 

 

Dubai plans reservoir of treated water

Water Channels, Jumeirah Al Qasr Hotel, Dubai, UAE - N2

Retrieved from: Top Photo

“Safely treated waste water could be the answer to Dubai’s need for having an underground water reservoir for meeting any fresh water crisis.

“ Diminishing natural groundwater is a serious threat to fresh water security in the arid region where desalination plants are the major source of water supply. Environmental experts have always highlighted the need for underground water reservoirs citing that cities here would have only a few days of water if desalination plants are damaged due to any reasons.

“Last year, Abu Dhabi started working on underground reservoirs. Now, Dubai is exploring ways to make use of safely treated and good quality sewage water for recharging ground water, which, in the long run, will help make an emergency reservoir of underground water.”

Read more: Khaleej Times

 

NYC plans $3B transformation of waterfront

Retrieved from: 123rf

“For decades, development in New York was about concrete, skyscrapers and roads — highways that often ringed the city and kept people from the hundreds of miles of waterfront shoreline that help define the city. Now, the city’s first waterfront plan in two decades will spend billions of dollars to reunite New Yorkers with their water.

“The $3 billion-plus plan, to be announced by the Bloomberg administration Monday, would add 50 new acres of parks, expand dozens more, overhaul the city’s sewage system to reduce waste pushed into the rivers and dredge waterways to make room for giants ships that are rarely seen on the East Coast.

“For much of the city’s history, the waterfront was viewed more as dumping ground than destination. The Erie Canal’s opening in the early 1800s made the city America’s main port, and industrial toxins and human waste turned much of New York Harbor to muck. The harbor’s oysters died, methane gas bubbled to the surface, and the horrific smell wafted inland and kept the city’s upper class far from the water.

“The first stages of the effort are expected to cost the city more than $3.27 billion over the next three years, with most of the money going to wastewater infrastructure. The work is meant to create 13,000 construction jobs and 3,400 permanent maritime positions. The longer-term components of the plan have no price tag yet, and their outcome will depend on the approach of future administrations.

“Roland Lewis, president of the Metropolitan Waterfront Alliance, a coalition of environmental, recreational and business organizations, said the plan “will increase the attention and use of the waterfront tremendously, from greenways, to boat access, to cleaner water, to preservation and cultivation of maritime industry and the working waterfront.”

Read more: WSJ

Gray water systems growing slowly in popularity

“Until recently, gray water had the patina of being on the fringe or new age. And it seemed, therefore, dismissible. But that image is changing. As the need to conserve water drives innovation and demand, gray water is finding a place in landscapes and gardens throughout the Bay Area.

“Gray water — some types of household waste water that bypasses the sewage system and is piped outside to the garden — is becoming more of a fixture in landscape and architectural designs, embraced by gardeners, environmentalists and homeowners. The reuse system, says Teresa Eade, an 18-year veteran and senior program manager with Alameda County’s Waste Management, now is a recommended practice in Waste Management’s Bay-Friendly Landscape Guidelines.

“Brent Bucknum, founder of the Oakland ecological engineering firm Hyphae Design Laboratory and the community-based nonprofit the Urban Biofilter, says gray water systems make economical and environmental sense.

“”Gray water is the most affordable, climate-specific solution to water issues in most Mediterranean California ecosystems,” Bucknum says. “It provides a year-round water supply with the smallest footprint, the fewest upfront costs and the least permitting hurdles.”"

Read more: The Mercury News

Israel Sends Wrong Message About Desalination

Photo retrieved from: www.buildaroo.com

“SDL Desalination Ltd, a company owned by IDE Technologies and Hong Kong’s Hutchison Water, announced earlier this week that it has begun construction on the world’s largest reverse osmosis desalination plant. The plant, slated to be ready by 2013, is the final one of three that are intended to meet 44% of Israel’s water needs in 2013.

For a country such as Israel which needs water and has very limited sources, technically, this is good. However, as Israeli journalist Yermi Brenner pointed out in an article on the Huffington Post last August, it’s more complicated than that. Apparently, over the summer, the Israel Water Authority sponsored a television commercial campaign featuring Israeli actress Renna Raz and having a message that Israelis need to conserve water only until the plants open in 2013. Talk about a bad message. Conservation and reduction will still be needed.

Plus, desalination isn’t a perfect solution. It comes with a slew of pros and cons. While the big pro is having drinkable water, some cons include a high maintenance cost of building and running these plants and possible harm to the  nearby ecosystem by  the waste from the plant.”

Read more: Green Prophet

U.N. report: Let’s turn foul water from mass killer into global treasure

The Ganges is one of India's sacred rivers, but concern over pollution along the river's entire course is growing.

“Contaminated and polluted water now kills more people than all forms of violence including wars, according to a United Nations report released Monday that calls for turning unsanitary wastewater into an environmentally safe economic resource.

“As a result, “it is essential that wastewater management is considered as part of integrated, ecosystem-based management that operates across sectors and borders, freshwater and marine.”

read more: CNN

Analysis: World Water Day Promises Much, but We’ve Been Here Before

“The economics of improving water quality was a major theme during the program at World Water Day last week, so an economic maxim is appropriate to summarize the day: talk is cheap. Rather, more specifically, scripted talk is cheap.

“The key remark, as is often the case, was brief and direct, without the padding used in government-speak to hide meaning. Panel moderator Achim Steiner, the executive director of the United Nations Environment Program, was posing a question about wastewater management.

“This is a simple problem,” Steiner said. “You either filter water before it is consumed, or treat it before discharging it.”

read more: Circle of Blue