A5011482889- Wastewater Treatment and Reuse
- Municipal Solid Waste Management
- Phosphorus and nutrient management
- Coal and Coke Industries Research
- Wastewater Treatment and Nitrogen Removal
- Advanced Power Generation Technologies
- Recycling and Waste Management Techniques
Lappeenranta-Lahti University of Technology
2020-2023
Due to the global trend of urbanization, amount sewage water is increasing in cities. This calls for efficient treatment resulting sludge. To date, 27 European Union member countries (EU-27), prevailing method application on arable land. Anaerobic digestion one methods being increasingly used nowadays. However, digestate requires further utilization. Therefore, this study, environmental performance composting, combustion, and pyrolysis options dewatered sludge evaluated based a life cycle...
Recovering and recycling nitrogen available in waste streams would reduce the demand for conventional fossil-based fertilizers contribute toward food security. Based on life cycle assessment (LCA), this study aimed to evaluate environmental performance of recovery fertilizer purposes from sewage sludge treatment a municipal wastewater plant (WWTP). Utilizing either air stripping or pyrolysis-derived biochar adsorbent, was recovered ammonium-rich reject generated during mechanical dewatering...
Based on mass and energy balance calculations, this work investigates the possibility of recovering heat nutrients (nitrogen phosphorus) from municipal sewage sludge using pyrolysis or combustion in combination with a gas scrubbing technology. Considering wastewater treatment plant (WWTP) 65,000 t/a mechanically dewatered digestate (29% total solids), 550 nitrogen 500 phosphorus were recovered 4900 600 that entered WWTP. Overall, 3600 (73%) was lost to air (as N2) clean water, while 90 (15%)...
This study investigates the recovery of ammonia from drying fumes during thermal sewage sludge with packed bed acid scrubbers to recover and produce ammonium sulfate. The process is modelled for two concentrations, 75 100 ppm, 1000m3/h inlet flowrate containing air gas. It results in finding optimal parameters scale-up 7700t/a Lappeenranta city. found that a single scrubber, 24000 m3/h gas an concentration liquid ratio 1.5, temperature pH as 100°C 3 respectively, gives efficiency more than...