Commissioning Norway’s first biofertiliser factory
Whipps, A. – Pell Frischmann Ltd. UK
(free)
IVAR IKS, the regional organisation responsible for the provision of drinking water and wastewater treatment in the Jaeren region of Norway has developed an integrated biofertiliser factory at its Stavanger Regional Wastewater Treatment Plant. In response to significant population growth, wastewater discharge compliance and tightening biosolids recycling regulations, IVAR IKS investigated the potential to utilise thermally dried sludge as an alternative to mineral fertilisers. An extensive 5 year trial and field experiment programme of investigating organic fertiliser products concluded it is possible to produce sludge-based fertilisers similar to those of mineral fertilisers.
Supported by Innovation Norway, IVAR progressed the construction of the bio-fertiliser facility comprising storage silos, dosage and mixing systems for the addition of extra nutrients, pelletiser and a loading unit for packing fertiliser pellets in big bags. The main fertiliser ingredient is thermally dried sludge produced in an existing rotary drying plant. The final products are tailor made MINORGA organic fertilisers, available in 600 kg big bags.
Optimisation of the waste water treatment facilities focuses on maximising the quality of the biosolids, in particular phosphorus content. This involves the installation of an activated sludge process with an integrated biological phosphorus stage (Bio-P). The paper describes the initial commissioning of the plant as IVAR prepares for full
MINORGA production in 2015.
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
