Navigation Links
Columbia researchers find green roof is a cost-effective way to keep water out of sewers
Date:5/6/2011

NEW YORK Green roofs like the one atop a Con Edison building in Long Island City, Queens can be a cost-effective way to keep water from running into sewer systems and causing overflows, Columbia University researchers have found.

The Con Edison Green Roof, which is home to 21,000 plants on a quarter acre of The Learning Center, retains 30 percent of the rainwater that falls on it. The plants then release the water as vapor, the researchers said in the study (http://www.coned.com/greenroofcolumbia).

If New York City's 1 billion square feet of roofs were transformed into green roofs, it would be possible to keep more than 10 billion gallons of water a year out of the city sewer system, according to the study led by Stuart Gaffin, research scientist at Columbia's Center for Climate Systems Research.

New York City, like other older urban centers, has a combined sewer system that carries storm water and wastewater. The system often reaches capacity during rains and must discharge a mix of storm water and sewage into New York Harbor, the Hudson River, the East River and other waterways.

Con Edison built the green roof and formed its research partnership with Columbia in 2008. The partners saw the green roof and an adjoining white roof as an outdoor laboratory for environmental research.

Gaffin's team found last year that the green roof and white roof save energy and reduce urban air temperatures. Under its "cool roofs" program, Con Edison has turned many roofs on company facilities white to save energy and protect the environment.

"The information we are collecting from Con Edison's roofs is invaluable in helping us determine the costs and benefits of green infrastructure projects," Gaffin said. "Without solid data from experiments like this, it is impossible for us to know which projects are the best options for protecting the environment."

"When we built our green roof we were confident that researchers from Columbia would gain important knowledge about protecting the environment," said Saddie Smith, vice president for Facilities for Con Edison. "Three years later, it's clear that our project has helped us understand how roofs can save energy, cool the atmosphere and prevent storm water runoff."

The researchers used instrumentation to measure sunlight, and other forms of energy entering and leaving the green roof. That data allowed them to calculate the amount of energy leaving the roof in the form of water vapor.

The study concluded that based on the cost of building and maintaining a green roof it costs as little as 2 cents a year to capture each gallon of water.


'/>"/>

Contact: Beth Kwon
beth.kwon@columbia.edu
212-854-6581
Columbia University
Source:Eurekalert

Related biology news :

1. Columbia engineers patch a heart
2. Columbia professor to discuss good, bad aspects of choice at NJIT March 23 talk
3. Columbia engineer observes surprising behavior of cells during blood-vessel formation
4. Columbia University uses technological innovation to study bone structure
5. Columbia University Medical Center announces 2010 Katz Prizes in cardiovascular research
6. Columbia engineer part of team to receive $6.2 million DOD grant for blast research
7. Columbia University Medical Center announces 2009 Katz Prizes in Cardiovascular Research
8. Columbia University scientist devises new way to more rapidly generate bone tissue
9. Salmon smolt survival similar in Columbia and Fraser rivers
10. Similar survival rates for Pacific salmon in Fraser, Columbia Rivers raises new questions
11. Columbia to award 2008 Horwitz Prize to Arthur Horwich & Ulrich Hartl for cellular protein folding
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/1/2016)... , June 1, 2016 Favorable ... Election Administration and Criminal Identification to Boost Global Biometrics ... recently released TechSci Research report, " Global Biometrics Market ... Competition Forecast and Opportunities, 2011 - 2021", the global ... by 2021, on account of growing security concerns across ...
(Date:5/16/2016)... 16, 2016   EyeLock LLC , a market ... opening of an IoT Center of Excellence in ... the development of embedded iris biometric applications. ... convenience and security with unmatched biometric accuracy, making it ... from DNA. EyeLock,s platform uses video technology to deliver ...
(Date:5/3/2016)... 2016  Neurotechnology, a provider of high-precision biometric ... Biometric Identification System (ABIS) , a complete system ... ABIS can process multiple complex biometric transactions with ... fingerprint, face or iris biometrics. It leverages the ... MegaMatcher Accelerator , which have been used ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... Prostate Cancer Foundation (PCF) is pleased to announce 24 new Young Investigator ... Members of the Class of 2016 were selected from a pool of 128 ... About the Class of 2016 PCF Young Investigators ... ... ...
(Date:6/23/2016)... , ... June 23, 2016 , ... STACS DNA Inc., ... Leader at the Arkansas State Crime Laboratory, has joined STACS DNA as a Field ... DNA team,” said Jocelyn Tremblay, President and COO of STACS DNA. “In further expanding ...
(Date:6/23/2016)... June 23, 2016 ... 2016;12(1):22-8 http://doi.org/10.17925/OHR.2016.12.01.22 Published recently ... peer-reviewed journal from touchONCOLOGY, Andrew D Zelenetz ... of cancer care is placing an increasing burden ... expensive biologic therapies. With the patents on many ...
(Date:6/23/2016)... ... June 23, 2016 , ... Velocity Products, a division of ... and optimized exclusively for Okuma CNC machining centers at The International Manufacturing Technology ... among several companies with expertise in toolholding, cutting tools, machining dynamics and distribution, ...
Breaking Biology Technology: