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| | | Forum Newbie
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Last Login: 5/8/2008 5:06:32 PM
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| There is some good information here, thanks guys/gals. I am also looking into using Bioxide. By what I've seen here, my system is just like any other collection system...only much smaller. I send about 80-100,000 gals to a nearby city and pay them to treat it. This is accomplished via a 4 mile-long force main. As you can imagine H2s levels are more than acceptable, and since none of my predecessors mangaed to cure the problem, it is up to me. The rep from Siemens will be here in a couple of weeks to do the evaluation, so we'll see. Unless someone has a better idea, Bioxide will probably do the trick....if we can afford it!  Thanks again for all the good info, I will stop in from time to time. (now back to writing a new song for the band. We will be playing at the IRWA conference next year in Idaho. Name of the song? "Hyrdogen Sulfide Blues") Suggestions welcome! |
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| | | Forum Newbie
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Last Login: 3/20/2008 5:29:48 PM
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| | We currently use Bioxide in a few of our pump stations that convey sewage to our two treatment plants. We spend roughly $500,000 on the product and it does remove sulfide and has provided odor control. Since the process of adding nitrate is patented, has anyone out there tried to use another nitrate product or vendor other than Siemens? They claim that they will sue us for infringement on their patent so I just wondered if anyone has even attempted to try some other form of nitrate. Mr. Stink |
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Supreme Being
Group: Forum Members
Last Login: 7/3/2008 5:42:08 PM
Posts: 229, Visits: 614 |
| | I believe their original patent expired and they got a new on based on some modification. We did a pilot with sodium nitrate and the vendor indemnified us from any adverse claim from the Bioxide guys. They said their lawyers were bigger than Bioxide's lawyers or some such thing. Actually they believed their process did not infringe. If you got a pump and control package from Bioxide there may or may not be a specific prohibition in the contract to prevent you from using something else. I would contact another vendor that could advise you. Contact me off list and I may be able to find who did our nitrate pilot. We ended up using ferrous after trying nitrate and peroxide. You can search the patent office database for Bioxide and find the current patents at: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&p=1&u=%2Fnetahtml%2FPTO%2Fsearch-bool.html&r=0&f=S&l=50&TERM1=Bioxide&FIELD1=&co1=AND&TERM2=&FIELD2=&d=PTXT |
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| | | Forum Newbie
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Last Login: 5/12/2008 7:18:53 PM
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| | Can anyone tell me what concentrations are reccomended to reduce odor through addition of calcium nitrate? Residence time?, Typical Costs? and if you would reccomend any alternatives such as hydrogen peroxide or ferric chloride? Thanks, Jordan |
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| | | Forum Newbie
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Last Login: 5/12/2008 7:18:53 PM
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| | Also, what are the issues with effluent for a plant, in terms of water reclamation? Jordan |
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Supreme Being
Group: Forum Members
Last Login: 7/3/2008 5:42:08 PM
Posts: 229, Visits: 614 |
| | We tested peroxide pre-9/11. It is pretty scary stuff. Will permanently blind instantly on eye contact. Will set up to 1 year old blacktop on fire. It can react violently to any metal contamination. A screwdriver dropped in the tank will result in a uncontrolled decomposition. The truck driver did every known safety procedure. After parking, he coned and taped off the area. Full hazmat suit, gloves and boots taped, goggles, face shield etc all before doing anything! It can be used to make a nondetectable high explosive too! As it raises DO, it is pretty easy to measure excess. We are moving to Bio-P so it would destroy VFAs needed for Bio-P. Needed to be applied close to the plant on an 11 mile force main. The sodium nitrate we got from a fertilizer company was very safe and easy to apply. It too consumes VFA inhibiting Bio-P. If you overdose you can denitrify in the primary clarifier and float the sludge. It reacts slower than peroxide so was applied further away. Ferric is corrosive and stains everything. pH is minus 0.6! We apply it at the beginning of the 11 mile force main as there are not competing reactions as with peroxide or nitrate on VFA. Helps reduce odor on the entire line at air reliefs. Every ton of iron you add has to go out in the sludge so there are additional costs there. If you are cogenerating, it will help reduce H2S in the digester too. |
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Last Login: 6/26/2008 2:15:19 AM
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| I am not in your field, but rather a citizen having sewer odors in my yard for 7 years, and extensive discussions with the sewer company. Their use of bioxide is a band aid patch. I'm convinced our problem requires a change in the line system (which they don't want to do). My concern now is the potential hazard to my family with the use of bioxide. Where can I get more info. on this chemical?
von |
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| | | Junior Member
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Last Login: 7/3/2008 3:15:53 PM
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Supreme Being
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Last Login: 7/3/2008 5:42:08 PM
Posts: 229, Visits: 614 |
| | Bioxide is a simple soluble fertilizer. The lawn care companies spray nitrate on laws to provide a quick nitrogen fertilizer. The nitrate simply provides a chemical source of oxygen and turns into nitrogen gas. Air is mostly nitrogen. Sewage stinks because it is deficient in oxygen. Adding nitrate is probably the safest, simplest way to provide oxygen to sewage on its way to the treatment plant. Peroxide and iron are more difficult to handle. The calcium part of Bioxide is similar to lime that you would put in the garden or lawn. The controversy here is over patent rights. Typically publicly owned plants share information and solutions freely. When a private company spend R&D money developing a process they expect to recover that money and make a profit. Their technical expertise is used to design a solution to a problem. Everyone wants to benefit from the R&D and get it for free. Working for a public organization and having 2 patents, I see it from both sides. After I explain a patent, they will say,"Gee, that is obvious". Well it wasn't obvious before I explained it to you! |
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