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RE: Bioremediation or inorganic treatment?

There is plenty of literature on denitrification by alternating between
aerobic and anaerobic treatment stages, or by using an anaerobic reactor.
The wastewater would have to be characterized to screen for toxics and
interferences, and whether an additional carbon source is needed (e.g.,

Judy Kennedy
Hazardous Waste and Toxics Reduction Program
Washington State Department of Ecology
P.O.Box 47775
Olympia, WA  98504-7775
Phone (360) 407-6385
Fax  (360) 407-6305
Email:  jken461@ecy.wa.gov

-----Original Message-----
From: sdavis@oznet.ksu.edu [mailto:sdavis@oznet.ksu.edu]
Sent: Thursday, April 05, 2001 8:22 AM
To: P2tech@great-lakes.net
Subject: Bioremediation or inorganic treatment?

I'm dealing with a manufacturer that has a waste stream with high 
nitrites and nitrates.  Can anyone advise on a biodegradation (bug) 
system/vendor this company might use in their wastewater ponds 
(permitted industrial ponds)?  Their ponds were undersized and they 
are looking at biotreatment to reduce the nitrate levels so that some 
of this wastewater can be sent to their local POTW.
I would also like to know if there is a chemical WWT (wastewater 
treatment) option here?
the wastewater stream is about 2500g/d, 4 days a week; wastewater 
also has charcoal in it.  Have looked at land application and 
commercial WWT options already.
I will be working with this company on an alternative cleaning 
process (dry cleanup for pre-clean) and ways to reduce contaminate 
loading, so will be looking at P2 options.  
If you have experience with de-nitrification systems please email me 
Sherry Davis