Anaerobic Technology
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Anaerobic Technology

ANAMMOX:Energy Saving and Low CO2 Emission Biological Nitrogen Removal Technology

Technical introduction

Anammox (anaerobic/anoxic ammonium oxidation) is a energy saving and low CO2 emission technology for removing nitrogen. Compared to Nitrification-Denitrification, the advantages of Anammox includes:

  • Reducing 100% carbon source addition
  • Reducing 50% aeration power
  • ​Reducing 80% waste sludge production

Application types

Applications of Anammox system on wastewater treatment are generally divided into two-stage and one-stage systems:

  • In two-stage system, half of NH4+ in the influent is partially oxidized to NO2- in the first aerobic reactor, then the produced NO2- reacts with the remaining half of NH4+ to N2 in the second reactor.
  • In one-stage system, ammonium oxidizing-bacteria biofilms form the outer layers while anammox biofilms forms the inner layers of biofilm carriers through aeration control. Such a two-layer structure is beneficial to ammonium oxidizing bacteria consuming oxygen in the outer layer and therefore prevent the inhibition of anammox (by oxygen) in the inner layer. Total nitrogen removal is achieved in a single reactor.


 

Patents

  • TW I386347,I522322,I527727
  • US 8,057,673
  • CN ZL201210580420.2

 

 
Contact

Dr. Lin, Han-Lin

Tel: 886-3-5732642

Fax:886-3-5732349

Email: itriA50649@itri.org.tw

 

 

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