Pneumatic barrier
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[edit] Definition
A pneumatic barrier is an active versus passive method of waterway oil spill control. (An example of a passive would be a boom).
[edit] Method of operation
The pneumatic barrier consists of perforated pipe and a compressed air source. Air escaping from the pipe provides a "hump" of rising water and air which contains the oil spill. Anchors keeping the pipe in a decided spot are helpful.
[edit] Unique considerations
At current speeds around 1 fps the pneumatic barrier no longer functions effectively, limiting deployable sites.
[edit] Environmental issues
The release of compressed air in the water adds oxygen to the local environment. This may be particularly useful in an area which has become a dead zone due to eutrophication.
[edit] Controversy
Like all active systems of any type, a mechanical failure can result in total failure of protection.
[edit] External links
- http://www.rpi.edu/dept/chem-eng/Biotech-Environ/Environmental/boom.html A term paper on the subject published by Brett M. Durham
