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Re: biofiltration



Biofiltration definitely works. Some caveats:

1) Need relatively biodegradable VOC's 

2) Need good air flow distribution across the bed (initially the most
technically challenging problem)

3) media change-out shouldn't be be more than every 2-3 years and maybe
longer (obviously depends on the media used)

4) don't skimp too much on the media (wood chips is one example) and
try to get a consistent particle size

5) it's a biological process, so you need to watch out for the microbes
(temperature, moisture, micro-nutrients, etc.)

Good Luck!


Kirk Mills
Pollution Prevention Program
Colorado Department of Public Health 
     and Environment
4300 Cherry Creek Drive So.
Denver, Co  80246-1530
Ph: (303) 692-2977
Fax: (303) 782-4969
Email: kirk.mills@state.co.us

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