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Delhi’s water woes: How AAP plans to adapt Singapore’s ‘water re-use model’

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By Newsgram Staff Writer

Water Scarcity would become a history in Delhi as Singapore water re-use model, in which waste water is filtered and used again, is being studied to be replicated here, Chief Minister Arvind Kejriwal said on Monday.

Interacting with reporters at Rashtrapati Bhavan after attending the Padma awards presentation ceremony, Kejriwal said his government has already sent teams to Singapore to study its water supply model.

“Singapore does not have any water of its own. Almost 95 per cent of water comes from outside,” he said, adding it has developed a system where used water is filtered and re-used and in such a way water used in toilets goes to toilets after it is filtered and similarly waste water from kitchen goes to kitchen again.

“We have been studying how it is done. We plan to begin with 10 to 15 pilot projects on the same in Delhi in a month or so,” he said.

The water quality, after it is filtered, is as good as of mineral water, Kejriwal said.

If it could work in Delhi, “which I think it would”, there would be no water shortage in the city, the chief minister said.

The concept of recycling wastewater certainly isn’t new, with long-running initiatives already well underway in Israel, Spain, Scandinavian countries and the US. But with water re-use model, Singapore has quickly gained an international reputation for efficient recycling of wastewater. The initiative already supplies around one third of the country’s water demand, and that number is expected to grow to more than half by the year 2060.

Singapore’s water project has become an important model for the entire Asia Pacific region. Australia, too, has been purifying wastewater for years, though partially for different reasons.

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NASA’s Probe Discovers Signs Of Water on Asteroid Bennu

OSIRIS-REx will pass later this month just 1.2 miles (1.9 km) from Bennu, entering the asteroid's gravitational pull and analyzing its terrain.

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This Nov. 16, 2018, image provide by NASA shows the asteroid Bennu. NASA

NASA’s OSIRIS-REx spacecraft has discovered ingredients for water on a relatively nearby skyscraper-sized asteroid, a rocky acorn-shaped object that may hold clues to the origins of life on Earth, scientists said on Monday.

OSIRIS-REx, which flew last week within a scant 12 miles (19 km) of the asteroid Bennu some 1.4 million miles (2.25 million km) from Earth, found traces of hydrogen and oxygen molecules — part of the recipe for water and thus the potential for life — embedded in the asteroid’s rocky surface.

The probe, on a mission to return samples from the asteroid to Earth for study, was launched in 2016. Bennu, roughly a third of a mile wide (500 meters), orbits the sun at roughly the same distance as Earth. There is concern among scientists about the possibility of Bennu impacting Earth late in the 22nd century.

 

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NASA’s OSIRIS-REx. Flickr

 

“We have found the water-rich minerals from the early solar system, which is exactly the kind of sample we were going out there to find and ultimately bring back to Earth,” University of Arizona planetary scientist Dante Lauretta, the OSIRIS-REx mission’s principal investigator, said in a telephone interview.

Asteroids are among the leftover debris from the solar system’s formation some 4.5 billion years ago. Scientists believe asteroids and comets crashing into early Earth may have delivered organic compounds and water that seeded the planet for life, and atomic-level analysis of samples from Bennu could provide key evidence to support that hypothesis.

“When samples of this material are returned by the mission to Earth in 2023, scientists will receive a treasure trove of new information about the history and evolution of our solar system,” Amy Simon, a scientist at NASA’s Goddard Space Flight Center in Maryland, said in a statement.

OSIRIS-REx, NASA, Asteroid
This illustration provided by NASA depicts the OSIRIS-REx spacecraft at the asteroid Bennu. The rocky remnant from the dawn of the solar system may hold clues to the origins of life. VOA

“We’re really trying to understand the role that these carbon-rich asteroids played in delivering water to the early Earth and making it habitable,” Lauretta added.

OSIRIS-REx will pass later this month just 1.2 miles (1.9 km) from Bennu, entering the asteroid’s gravitational pull and analyzing its terrain. From there, the spacecraft will begin to gradually tighten its orbit around the asteroid, spiraling to within just 6 feet (2 meters) of its surface so its robot arm can snatch a sample of Bennu by July 2020.

Also Read: Wintertime Ice Growth in Arctic Sea Slows Long-Term Decline: NASA

The spacecraft will later fly back to Earth, jettisoning a capsule bearing the asteroid specimen for a parachute descent in the Utah desert in September 2023. (VOA)