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| | | Forum Newbie
Group: Forum Members
Last Login: 5/5/2008 7:56:00 AM
Posts: 5, Visits: 33 |
| | Does anyone have any experience with Bioxide addition to the collection system for odor control. Bioxide is a Nitrate that is added to the collections system to give the bacteria an oxygen source to help control sulfide levels. My main concern is Nitrate addition to the treatment process and increasing effluent nitrate levels. |
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| | | Supreme Being
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Last Login: 2 days ago @ 4:54:38 PM
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| I've had no personal experience with this product. But, my natural inclination is to try to find the cheapest and least complicated non-proprietary way to oxidize a waste, rather than rely on a particular company's product. If oxidation is the chosen method to prevent formation of reduced sulfur compounds, why not see if you can come up with some means of using the (almost) free oxygen in the atmosphere. Maybe air injection, or cascading the water could work. Or, the use of non-proprietary chemicals (iron salts, chlorine, peroxide, etc.) would be more cost-effective without tying you into buying from a particular supplier.
Jeff Naumann
(310) 540-0045
FAX (310) 540-0337
http://www.jeffnaumannassociates.com/ |
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| | | Supreme Being
Group: Forum Members
Last Login: 7/14/2008 1:24:13 PM
Posts: 487, Visits: 1,446 |
| | I have questions about using nitrates in a collection system. The bacteria in a collection is predominantly Anaerobic. Anaerobic bacteria is the type that causes the odors in the first place. So, to stimulate this type of bacteria would, in my opinion, increase the odor problems. Now this stuff might work in a Lagoon or Aerobic bacteria starved Activated Sludge process, but in a collection system.... |
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| | | Forum Newbie
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Last Login: 5/5/2008 7:56:00 AM
Posts: 5, Visits: 33 |
| | The Bioxide works very well for odor control but I am unsure of the NO3 load it my bring to the plant. |
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| | | Forum Guru
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Last Login: 7/9/2008 5:42:05 PM
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| Bacteria in a collection system are facultative, which means they utilize oxygen from different sources depending on the environmental conditions. Their preference is dissolved oxygen and they do just fine in an aeration basin, second preference is the oxygen from nitrates this is what drives denitrification in an MLE process. Anoxic conditions (no dissolved oxygen and nitrates present along with a carbon source) are needed for denit to occur. When neither dissolved or nitrate oxygen is present anaerobic conditions prevail and the oxygen source preference is from sulfates. The sulfur then combines with hydrogen and forms hydrogen sulfide. Adding a nitrate source (bioxide which is calcium nitrate) provides the bacteria a source of oxygen and keeps them from reducing the sulfates into hydrogen sulfide. I have been involved with several facilities that use bioxide with great success, great cost, but great success.
If dosing of bioxide is not excessive there will be no nitrates coming into the plant as bacteria will have consumed the oxygen by then. |
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| | | Supreme Being
Group: Forum Members
Last Login: 7/14/2008 1:24:13 PM
Posts: 487, Visits: 1,446 |
| | Robert, Do you or your company sell this stuff? I've heard this arguement before, however it doesn't convience me. The science doesn't fit. |
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Supreme Being
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Last Login: 2 days ago @ 12:41:25 PM
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| | Jerry: Since you've got all this time in Paradise plus warm sandy beaches, scent of salt titillating your nostril hairs, and more than likely a nice cold brew sitting right next to you I would do the following: There was an article published on NEWEA Journal, May 1999, Vol. 33, No. 1 by Peter Churchill and David Elmer entitled "Hydrogen Sulfide Odor Control in Wastewater Collection Systems". In a nutshell, they tried various chemicals to change the environment present in the collection system such as nitrate of soda, potassium nitrate, and calcium nitrate. You can download the journal from http://www.newea.org/download.htm Warning though, this journal is about 7-10 megs in size. Sit back, relax, and enjoy it. Yes, Virginia, there is truth to what has been said about the chemicals.
E. coli happens! Database Central |
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Supreme Being
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Last Login: 7/16/2008 10:48:18 AM
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| | We piloted iron, peroxide and sodium nitrate, Bioxide is calcium nitrate and its use is patented. If we overdosed, the primary sludge denitrified and floated in the clarifier. It did reduce H2S in both liquid and gas forms. It would interfere with Bio-P as you want the nastiest, most septic influent for VFAs. We ended up using ferrous in an 11 mile force main we call the "linear fermenter". It produces as much VFA as the fermenter at another plant. |
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| | | Supreme Being
Group: Forum Members
Last Login: 7/15/2008 1:43:38 PM
Posts: 101, Visits: 1,075 |
| | Great response Robert on the Bioxide question. We have been using it for years and its does a great job with odor control . As you said it can get expensive but it prevents the deterioration of pipes and concrete manholes and other downstream equipment and tanks. |
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| | | Junior Member
Group: Forum Members
Last Login: 7/27/2007 8:20:38 PM
Posts: 22, Visits: 186 |
| | It definitely works. Nothing noticeble at the plant. The drawback I see is the price. Very, Very expensive......... |
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