1 / 15

Influence of trace elements in nitrification

Influence of trace elements in nitrification. Introduction Nitrification: What is it and why is it important? Problems met by OASEN Company Batch experiment Conclusions. Different ways to remove ammonium: Break point chlorination (not used in the Netherlands)

deanna-martinez
Download Presentation

Influence of trace elements in nitrification

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Influence of trace elements in nitrification Khelifi Faiza

  2. Introduction • Nitrification: What is it and why is it important? • Problems met by OASEN Company • Batch experiment • Conclusions Khelifi Faiza

  3. Different ways to remove ammonium: • Break point chlorination (not used in the Netherlands) • Adsorption of ammonium on zeolites, ions exchange • Stripping • Biological conversion: Nitrification Khelifi Faiza

  4. Nitrification • Biological oxydation of ammonium into nitrite and then nitrate. • NH3 + 1,5 O2 + nitrosomonas  NO2- +H2O + H+ NO2- + 0,5 O2 + nitrospira  NO3- Khelifi Faiza

  5. Why is it important? • pH > 8 => NH3 formation • Nitrite formation  Poisonous for fish  Blue Baby syndrom • NH4: Substrate for many bacteria Khelifi Faiza

  6. Ammonium in filter effluent Khelifi Faiza

  7. Batch experiment *Aeration*T=12°C*Shaking Khelifi Faiza

  8. The results expected: • NH4+ decrease more quickly in bottles with trace elements. • NO3- and NO2- increase more in bottles with trace element than in bottles without trace elements. Khelifi Faiza

  9. NO3- and NO2- Khelifi Faiza

  10. Total nitrogen Khelifi Faiza

  11. Second experiment *T =20°C *Shaking *Single limitation Khelifi Faiza

  12. Results Khelifi Faiza

  13. Total nitrogen Khelifi Faiza

  14. Conclusion Khelifi Faiza

  15. Thank you for your attention, Questions ? Khelifi Faiza

More Related