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UV Dose for Wastewater Disinfection

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rjanoch

rjanoch

Civil/Environmental
Jan 8, 2009
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Is there a minimum UV dose required by the EPA for disinfection of treated wastewater? I have found literature suggesting 40 mJ/cm2 for drinking water, but am looking for requirements regarding wastewater.
 
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NWRI guidelines required 80 mj/cm2 at 65% UVT for an application I worked with. I'm pretty sure that NWRI sets different requirements depending on if the wastewater is being used for re-use.
 
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The UV dosage will depend on how much solids are in the water. Since that varies, you can not have a definitive answer to your question.

What do you mean by "treated water"?





 
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