Example |
Task/Objective | Result | Remarks |
Cologne, Landfill Ville | 500 m³/day landfill leachate NH4N~ 1.0 bis 2.4 g/l, COD ~ 2.0 g/l | Three-stage plant: DEN+NI+DEN-2 | First plant of this type |
Wuppertal | N elimination from sludge process water and chemical effluent | Continual comparative pilot project, feasibility study | Large-scale technical implementation |
City of Helsinki | Nitrification at 12°C in existing municipal treatment plant | Pilot project lasting 4.5 years in 50 m³, over 1 year trials in 1000 m³ reactor | 15% LEVAPOR = double nitrification |
Nordhorn, GER | Joint treatment of municipal and textile effluent | Flocculation+foaming +aerobic biology | Continual on-line pilot project in situ, study/td> |
Aachen | Nitrification/denitrification of sludge liquor | Continual trials in situ, Denitr.+ Nitri., or SADEAM | Virtually complete N elimination possible |
Aachen | Improvement of sludge digestion | Feeding of enzymes | 2 t/d less residual TR, 11-13% more biogas; |
Gütersloh, Obere-Lutter | Improvement of sludge digestion | Feeding of enzymes | Less residual TR, 11 to 13% more biogas |