Processes at cold temperature
In Finland and the Baltic Sea region, wastewater and natural waters are relatively cold for most of the year, which affects treatment processes. In addition, the capacity of the natural systems' capacity to degrade harmful compounds slows down at low temperatures, making our nature vulnerable. Process solutions in focus are nitrogen removal, removal of organic micropollutants, and solid separation.
Project on linking microbial population to N2O.
The goal of this project is to develop the “Finnish gene map for the nutrient removal process” that will allow the application of molecular analytical methods in process operation and control and further reveal the specificities of the Finnish processes. Biological processes used in wastewater treatment are complex systems where different groups of microbes form communities. These communities have advanced interactions between the groups of microbes. The baseline community of a “healthy” process must be determined first in order to test different applications of using molecular biology information in process operations. HSY’s Viikinmäki WWTP in Helsinki offers a unique environment to study N2O emissions, because online monitoring of GHG emissions has been carried out at the plant since 2012. In addition, Viikinmäki has suffered from nitrogen removal disturbances in the recent years. Nitrogen removal optimization and N2O mitigation based on the new microbial community data and process monitoring data collected at the WWTP will be tested in this project.
Contact person:
Oona Kinnunen
[email protected]
The CIS-Fin project aims to generate critically needed data regarding GHG emissions from Finnish centralized WWTPs and to produce first-hand knowledge on GHG emissions from decentralized small-scale and on-site wastewater treatment systems. Furthermore, the project will also bring about novel information on wastewater related GHG emissions occurring in the immediate area where wastewater treatment facilities discharge their effluent (water body or soil). Model development for GHG emission is included. The model will allow emission predictions in the Finnish conditions and testing of different mitigation strategies.
Contact person:
Milla Sieranen
[email protected]
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