השפעות של רכז התפלה על הסביבה הימית – מיתוסים מול...
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פרופסור יובל כהן, הרצאה ביום עיון צלול 25.4.10TRANSCRIPT
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/ -
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SWRO
••
Fe(OH) 3
•
•
Fe(OH) 3= 100%
Fe(OH) 3< 10%
SWRO
/
•-X
•
•-Fe(OH)3
•-
•
•
•
–
–
–
•
•
•
•
–
•-
•-~ 70C
(Turbulent Diffusion
12/1/2005
8/1/2005
•
•
Perth/
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-
Oceanica 2009
2008US National Research Council,
II
IV , I
III
/
'
-
'
> 40.5
–
1H38/2009(
–
+ 2
+ 0.4
/
“Coagulant chemicals are generally not toxic to aquatic
life…Iron is not considered a priority pollutant”
(UNEP, 2008)
•
•
•
Fe+++(OH-)3
“Iron in the form of oxides and hydroxides is
biologically unavailable for algal uptake" (Lewandowska & Kosakowska, Oceanologica, 2004)
–
“For all practical purposes, the discharge of
even large quantities of ferric hydroxide to the
marine environment would not create unnatural
phytoplankton blooms”
(Monterey Bay Regional Desalination Feasibility Study 2006)
–
-2008
June
August
November
-
–
Fe %
Al %
PO43-Biodegradability 30 days ~ 20%
-
–
-
Lattemann & Hopner, Desalination 2008)
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–
'(–