Navigation Links
Researchers devise hidden dune filters to treat coastal stormwater runoff
Date:3/19/2013

When it rains, untreated stormwater can sweep pollutants into coastal waters, potentially endangering public health. Now researchers from North Carolina State University have developed low-cost filtration systems that are concealed beneath sand dunes and filter out most of the bacteria that can lead to beach closures.

"It was not economically feasible to use a tract of beachfront property to treat stormwater. Instead, we were able to devise a system that could be installed in an area that was not developable underneath the dunes," says Dr. Michael Burchell, an assistant professor of biological and agricultural engineering at NC State and senior author of a paper on the research.

Specifically, the so-called dune infiltration systems reduced the concentration of bacteria in stormwater runoff by 96 percent.

The researchers designed and built two such systems in Kure Beach, N.C. The systems consist of large, open-bottomed chambers that effectively divert the stormwater into dunes, which serve as giant sand filters. The systems are built under dunes that are covered with vegetation. The researchers then launched a three-year study to see how the filters would perform.

"We needed to know if these filters would affect the flow of ground water, affect dune erosion and whether they would effectively limit bacterial pollution," Burchell says.

The filters "exceeded our expectations" at removing bacterial pollution, Burchell says. And the study found minimal impact on ground water. There were short-term increases in ground water levels during storms, but those increases dissipated in anywhere from a few hours to two weeks.

"And we found that after replanting, the coverage of the dune vegetation actually exceeded what had been there previously which is important to dune stability," Burchell says.

Burchell's team has since installed a third dune infiltration system in a more developed location to see if the system is able to handle higher flow rates, water volume and concentrations of bacteria. That work is ongoing, but early results are promising.


'/>"/>

Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University
Source:Eurekalert  

Related medicine news :

1. Leading Canadian health researchers honored
2. Researchers propose a novel prognostic model for disease-specific survival in BCa patients
3. More parents say they wont vaccinate daughters against HPV, researchers find
4. Kessler Foundation researchers share findings in rehabilitation research at AAN meeting in San Diego
5. Mayo Clinic and Illinois researchers develop new sensor for methylated DNA
6. Researchers advance fight against biggest hidden virus
7. Brain researcher James Poulet receives the 2013 Paul Ehrlich Prize for Young Researchers
8. Bradley Hospital researchers find age-related changes in how autism affects the brain
9. LA BioMed physician-researchers honored as top doctors
10. IU researchers receive $3.2 million to develop, improve therapies for pancreatic cancer
11. Cancer researchers discover new type of retinoblastoma in babies
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers devise hidden dune filters to treat coastal stormwater runoff
(Date:12/9/2016)... ... December 09, 2016 , ... The Holy Name Medical Center ... NY, on December 3rd, to benefit Holy Name Medical Center's programs and services. ... raised over $1 million - the largest event in the Center's history, both ...
(Date:12/9/2016)... ... December 09, 2016 , ... "I had a terrible time trying ... Va. "I thought that if the nebulizer had a more child-friendly design, then children ... , He developed the patent-pending NEBY to avoid the need to deliver medication via ...
(Date:12/8/2016)... (PRWEB) , ... December 08, 2016 , ... ... will become Quality Insights beginning January 1, 2017. The name change aligns ... commitment to measuring and improving health care quality. , “We are very proud ...
(Date:12/8/2016)... , ... December 08, 2016 , ... ... Research Institute (WCRI) officially opened registration today for its 33rd Annual Issues ... Boston, MA . , The theme of the conference is “Persistent Challenges and ...
(Date:12/8/2016)... ... December 08, 2016 , ... ZyDoc ... Language Processing–Enabled and Conventional Data Capture Methods for Input to Electronic Health Records: ... , Results of the comparative usability study demonstrate that a dictation-based method (“NLP ...
Breaking Medicine News(10 mins):
(Date:12/8/2016)... IRIDEX Corporation (NASDAQ: IRIX ) today ... common stock, $0.01 par value (the "Offering" with such shares ... final terms of the Offering will depend on market and ... be no assurance as to whether or when the Offering ... net proceeds it will receive from this offering for working ...
(Date:12/8/2016)... Dec. 8, 2016 KEY FINDINGS ... Patient warming ... of blood during surgeries, lowering the risks of neurological disorders ... of SSIs. The patient warming systems can be segmented into ... benefits in turn reduce the stay at hospitals thus, lowering ...
(Date:12/8/2016)... , Dec. 8, 2016 KEY FINDINGS ... poised to grow in 2017-2023. Various reasons for growth ... obese population, higher incidences of chronic diseases, high recovery ... mobility aid services. Medical lifting sling refers to ... with limited mobility. These slings connect to the lift ...
Breaking Medicine Technology: