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Some CSO questions?
Hi, the following question is from a company that my study was involved before, see if anyone can shed some light on it.
Thanks,
Anna
---------- Original Message ----------------------------------
From: "Andy McCusker" <amccusker@gunderboom.com>
Date: Wed, 18 Jul 2007 08:39:17 -0800
>I added a small amount of additional text (in blue).
>
>
>
>Regards,
>
>Andy McCusker
>
>
>
>-----Original Message-----
>From: Andy McCusker
>Sent: Wednesday, July 18, 2007 11:21 AM
>To: 'CCalcetero@PIRNIE.COM'; 'JIwaskiw@PIRNIE.COM';
>'MElortegu@PIRNIE.COM'; 'TAlexander@PIRNIE.com'; 'MMondello@PIRNIE.COM';
>'yeungcheunga@mville.edu'
>Cc: Beth DeSwarte; Jessamy Wells; Melissa Hamlin
>Subject: Some CSO questions?
>Importance: High
>
>
>
>As you know, Gunderboom aquatic filter barrier systems are used to
>reduce bacteria levels in reservoirs and beaches. They function largely
>by preventing the passage of particulates (filtering them), a conclusion
>based on the fact that the apparent opening size (AOS) of the fabrics we
>most often use is on the order or 100 microns, not the single-digit
>micron size that would be needed to filter bacteria themselves.
>
>
>
>For some applications, there is also a likely contribution to the
>reduction of bacteria levels by AFB's of creating a settling basin
>behind the AFB such that flow does not short circuit directly.
>
>
>
>We do not have direct experience comparing the effectiveness for
>bacteria reductions of use of filter fabrics with greater AOS's than 100
>or 150 microns. We have proposed an application in the East River
>primarily to prevent fish eggs and larvae from being drawn into a water
>intake and the question has come up of whether this filtering may also
>reduce the bacteria levels, especially when levels are high, i.e., after
>wet-weather events.
>
>
>
>Do you have information or know of any particular sources that will help
>us anticipate possible reductions from varying filter pore sizes that
>might be applicable to this situation? We are presently planning to use
>a woven polyester fabric with a 600 micron slot size and will flow at
>less than 0.2 fps, most often much lower.
>
>
>
>Please feel free to write or call.
>
>
>
>Regards,
>
>Andy McCusker
>
>
>
>Andrew J. McCusker, CEP
>
>VP Technical Services
>
>GUNDERBOOM, Inc.
>
>2 White Sands Lane
>
>Scarborough, ME 04074
>
>Phone 207-883-1777
>
>Mobile 207-653-6777
>
>Fax 207-883-3864
>
>
>
>Gunderboom, Inc.
>
>Designs, Engineers, Manufactures, Installs and Services Gunderboom(r)
>Aquatic Filter Barrier Systems.
>
>www.gunderboom.com <http://www.gunderboom.com/>
>
>
>
>
>
--
Anna Yeung-Cheung,Ph.D
Assistant Professor
Dept. of Biology
Manhattanville College
Purchase,
NY 10577
--
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