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Sustainable Nitrogen Removal ANAMMOX® Hi, I'm Ana. I remove your nitrogen! ANAMMOX® Sustainable nitrogen removal The ANAMMOX® process is a very cost-effective and sustainable way of removing ammonium from effluents and ammonia from waste gas. revitalizing resources revitalizing Cost-effective and sustainable nitrogen removal The ANAMMOX® process is a very cost-effective and sustainable way of removing ammonium from effluents. Compared to conventional nitrification/ denitrification savings on operational costs can reach up to 60%, while CO2 emission is reduced. ® ANAMMOX The ANAMMOX® conversion is an elegant shortcut in the natural About ANAMMOX® nitrogen cycle. Anammox bacteria convert ammonium (NH +) and 4 • Proven technology, > 15 years nitrite (NO -) into nitrogen gas. Paques developed the process for 2 operational experience commercial purposes in coope ration with Delft University of • > 40 ANAMMOX® references Technology and the University of Nijmegen. Since the first worldwide full-scale plant started up in 2002 • Small footprint (treatment of the rejection water • Robust system, handling high loading variations of a sludge digestion of a municipal • Saving on operational costs up WWTP), many other ANAMMOX® to 60% plants were implemented. • Savings on excess sludge production • Easy process control in one single continuously operated reactor unit • No addition of organic carbon source (methanol) required www.paques.nl ANAMMOX® Operation principle Applications The ANAMMOX® reactor is a reactor The ANAMMOX® process can be used for system in which nitritation and anammox the removal of ammonium from nitrogen conversion occur simultaneously in one rich effluents. single process unit. These effluents are found in: The natural nitrogen cycle involves various • Municipal waste water treatment biological processes. Nitritation is the (sludge rejection water) process where ammonium is oxidised to • Organic solid waste treatment nitrite and nitrification is the process (landfills, composting, digestion) in which ammonium is fully oxidised to • Food industries Anammox bacteria nitrate. Denitrification is the process which • Manure processing industry converting ammonium and nitrite into nitrogen gas. converts nitrate with addition of an organic • Fertiliser industry carbon source to nitrogen gas. Anammox • (Petro) chemical industry (anaerobic ammonium oxida tion) conversion • Metallurgical industry is an elegant short-cut in the natural nitrogen • Semi-conductor industry cycle where ammonium and nitrite are converted to nitrogen gas. As the anammox process involves removal - of ammonium over nitrite (NO2 ) rather than - nitrate (NO3 ) less oxygen (O2) is required. + - + NH4 + 1½ O2 NO2 + H2O + 2H + - NH4 + NO2 N2 + 2H2O ANAMMOX®, how it works 1 Ammonia-rich influent 4 2 Aerators for mixing and 3 ammonia removal process 3 ANAMMOX® separator for biomass retention 4 Effluent exits the reactor 1 2 Paques: leading in biological wastewater and gas treatment Paques has over 30 years experience in helping Since 1980, Paques realised more than 1800 industries and municipalities to reduce their references worldwide. Besides the headquarters water and carbon footprints and reclaim in The Netherlands, Paques has subsidiaries and/ valuable resources. The cost-effective effluent or production locations in China, Brazil, North purification systems produce energy from America and India. In many other countries, wastewater, whilst purifying the water and the company is represented by licensed partners. facilitating water reuse. This ensures local presence and the best service for clients worldwide. Contact one of our branch offices: Balk Moscow Frankfurt a.M. Boston Shanghai Bangkok Chennai Bogota Kuala Lumpur Piracicaba Buenos Aires North America Europe (HQ) China Wilmington (MA), USA Balk, The Netherlands Shanghai, China t + 1 781 362 4636 t +31 (0) 51460 8500 t +86 (0)21 3825 6088 e [email protected] e [email protected] e [email protected] Latin America India Asia Pacific Piracicaba, Brazil Chennai, India Kuala Lumpur, Malaysia t +55 (19) 3429 0600 t +91 44 2827 3781 t +603 2169 6331 e [email protected] e [email protected] e [email protected] www.paques.nl.
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  • 3. Anammox Process
    3. Anammox Process 1 Outline of Anammox Process Anammox (anaerobic ammonium oxidation) is a novel anaerobically autotrophic nitrogen transformation pathway. + - - + 1 NH4 + 1.32 NO2 + 0.066 HCO3 + 0.13 H - → 1.02 N2 + 0.26 NO3 + 0.066 CH2O0.5N0.15 + 2.03 H2O The advantages of anammox process compared with conventional BNR process N2 Organic Energy saving: Reduction anammox matter of O2 requirement denitrification Cost saving: Organic - - NH3 NO2 NO3 matter (methanol) for nitrification denitrification is not necessary O2 Copyright (c) 2012 Japan Sewage Works Agency All rights reserved. 2 Application of Anammox Process to Municipal Wastewater Target of application to municipal wastewater Treatment of filtrate from a dewatering process of anaerobically digested sludge Characteristically high levels ammonia, relatively little organic matter High water temperature (optimum growth temperature of anammox bacteria: 30-40C˚) Two different processes are required; Converting ammonia to nitrite (nitritation) Converting ammonia and nitrite into nitrogen gas (anammox) 3 Basic Flow of Anammox Process Two-stage type process Pretreatment Nitritation Anammox + + NH4 -N NH4 -N Influent ? ＋ Effluent - - NO2 -N NO2 -N (Bypass) N2 Single-stage type process Nitritation ＋ Pretreatment Anammox + NH4 -N Influent ＋ Effluent - NO2 -N 4 N2 Outline of Anammox Processes Evaluated in JS Technology Evaluation Process A Process B Process C Flow equalization Flow equalization Flow equalization Pretreatment (BOD removal) (BOD removal) (Coagulation) Screen (Coagulation)
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