ANITATM Mox Experience from Start-up and Operation of Deammonification MBBR and perspective of a New Deammonification IFAS configuration
Nussbaum, B. – AnoxKaldnes AB
(free)
Energy optimisation and carbon footprint reduction are key goals for many wastewater treatment plants that are looking toward the future. Production of renewable biogas energy from anaerobic sludge digestion is key to achieving these goals. Treatment of ammonia-rich digester centrate with the use of anammox bacteria is recognized for valuable savings in oxygen consumption and external carbon source.
Veolia Water Technologies has proven that thermal hydrolysis, either in batch (Bio Thelys™) or continuous form (Exelys™), is a very effective pre-treatment process available for enhanced digestion. The many advantages of the thermal hydrolysis pre-treatment step result in a highly concentrated centrate stream following dewatering.
ANITA Mox, a 1-stage deammonification process based on the MBBR technology, has proven to be a suitable solution to treat these ammonia-rich effluents and solve the drawback of conventional and advanced anaerobic sludge digestion. Startup of these installations is accelerated using a seeding strategy whereby 3-15% of carriers with established Ammonium Oxidizing Bactiera (AOB)/Anammox Bacteira (AnAOB) biofilm are mixed with new carriers.
Recently, the performance of the ANITA Mox process was enhanced by operating the system under IFAS configuration, where the nitritation and anammox reactions are spatially separated allowing the AOB to grow in suspended phase to better utilize DO, while allowing the biofilm to specialize in anammox reaction to achieve higher rates.
The Biosolids conference attracts the most authoritative global experts in the area of biosolids and organic resource handling, treatment and recycling. The programme covers both the latest innovations and updates of existing technologies. Presentations from respected industry experts and newcomers follow the development of technologies and legislation from inception to full-scale installations.
The conference regularly gathers over 200 delegates from all over Europe, many of them return every year both for the technical presentations and fantastic networking opportunities.
Regular conference themes include:
• Thickening and Dewatering
• Modelling Sludge Handling and Utilisation
• Commissioning and Operating Experiences with Thermal Hydrolysis
• Tackling Potential Odour Problems
• Operating Experiences and Potential Problems in Digester Operation
• Ensuring Optimum Energy Recovery from Biogas
• Liquor Treatment and P Removal
• Alternative Products from Sludge
• Enhancing the Value of Biosolids and Digestate
• Pathogens and Pollutants In Digestate
• Sharing Experiences
