Ammoniacal Nitrogen a toxic pollutant found in landfill leachate and in waste products, such as sewage, liquid manure and other liquid organic waste products. Ammoniacal Nitrogen hinders the reduction of BOD & COD in ETP & STP.
Methods to be discussed for Ammoniacal nitrogen (NH3-N) removal are.
1. Ammonia Strip
2. Pre-anoxic denitrification
3. Post-anoxic denitrification
Ammonia Strip
Indeed, Ammonia strip is a way to remove ammonia but only when inlet ammonia is not more than 100 mg/l
Pre-anoxic denitrification
Pre-anoxic denitrification is suitable When BOD/TKN ratio is > 4 and target % Removal of Nitrogen < 75%
Post-anoxic denitrification
Post-anoxic denitrification should be used if BOD/TKN ratio is < 4 &/or target % Removal of Nitrogen > 75%
Example
Given inlet Parameters
Clearly as per data given Ammonia stripping cannot be used for the removal of ammonia as inlet ammonia is greater than 100 mg/l
Pre-Anoxic Denitrification is not a viable option as clearly BOD/ TKN ration is not greater than 4.
BOD/TKN ratio is less than 4, Hence Post Anoxic Denitrification is the best practice for the removal of Ammonia.
Feel Free to contact us for treatment of Ammonia from Wastewater, Landfill Leachate, Sewage treatment Plants or any other form of Ammonia.
Common Industries that will struggle with Ammonia are.
Gelatin Industry
Slaughterhouses
Landfill Sites
Food Industry
Cake Industry