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Denitrification in pond (Read 184 times)

Ashoori

Ex Member

Denitrification in pond
Jun 02^nd, 2012, 12:08am

Hi Experts
I have read an article about upgrading a stabilization pond in Los Angeles county (for nitrogen removal) by an MBBR after primary pond. It has used the second pond for denitrification. As I know, for denitrification mixing is necessary. How is it possible? In which situation a pond can work as a denitrification basin?
Thanks a lot.
Regards
Ashoori

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The sludge judge God Member Offline Posts: 649 Wisconsin Gender: Company or Organization: private	Re: Denitrification in pond Reply #1 - Jun 2^nd, 2012, 8:24am I'm not familiar with any personally, but as long as you have nitrate, soluble COD and no/ low dissolved oxygen you'll get denitrification. Is there a settling step/ filtration etc after this pond?
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Ashoori Ex Member	Re: Denitrification in pond Reply #2 - Jun 2^nd, 2012, 9:54am This is the article: www.environmental-expert.com/Files/384/articles/16315/2.pdf There is mentioned that primary pond is for reducing BOD and the second one which is used for denitrification is for settling. I don`t understand how it is possible and in which situation. May be depth is a key factor or sth else? Thanks
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jasonright YaBB Newbies Offline I love Water and Wastewater.com Posts: 1 Gender: Company or Organization: supplylinedirect	Re: Denitrification in pond Reply #3 - Jun 15^th, 2012, 1:38pm Denitrification performs a big part in the N pattern of marine techniques. In this process, facilitative anaerobic viruses convert nitrate or nitrite into nitrogen gas that goes out into the weather.
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DoctorBug

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Re: Denitrification in pond
Reply #4 - Jun 16^th, 2012, 7:23pm

Ashoori:

In phase I of this study, they showed very good nitrification in an aerated MBBR (moving bed biological reactor) with subsequent denitrification in a subsequent non-aerated lagoon cell. More significant, they showed in phase II that a MBBR system could do both nitrification and denitrification in a single pond. Here, the nitrifiers grew on the aerobic surface of the medium and denitrification occurred within the denser biological material in the medium where oxygen is limited.

Hope that this helps.

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