Optimizing Wastewater Treatment Through Digital Innovation
As wastewater treatment plants around the world seek to improve their efficiency and sustainability, digital solutions are emerging as key tools to optimize operations. One such solution has been successfully implemented at the Lotsbroverket wastewater treatment plant in Mariehamn, the administrative capital of the Åland Islands, Finland. By leveraging an automated, data-driven system, the plant has significantly reduced both energy consumption and chemical usage, leading to a more sustainable and efficient treatment process.
The treatment plant adopted Kemira’s cutting-edge digital service to optimize its chemical pre-treatment processes. This system was designed to maximize energy savings while ensuring a stable and effective wastewater treatment operation.
How the Technology Works
The data-driven, automated solution from Kemira measures several key indicators in the wastewater treatment process. These include flow, turbidity, and suspended solids in the influent wastewater, along with chemical markers, such as ammonium, phosphate, COD (Chemical Oxygen Demand), nitrate, and oxidation reduction potential. The system also monitors aeration energy consumption and biogas production. Using this data, intelligent algorithms calculate the optimal chemical dosage for pre-treatment, adjusting the process in real-time to maximize efficiency and minimize waste.
The predictive capabilities of the technology allow it to simulate treatment conditions two hours ahead, enabling proactive adjustments that prevent overuse of chemicals and optimize the treatment process.
Big Impact with a Small Footprint
Due to its underground coastal location, the Lotsbroverket plant had limited space for major expansion. The system was then a perfect fit for these constraints, as it requires minimal physical space while delivering significant operational improvements.
The automated system has reduced aeration energy consumption by 6 % and ferric sulphate use by 55 %, leading to substantial cost savings and a reduced environmental footprint. The plant’s improved energy efficiency and chemical optimization demonstrate how digital solutions can drive sustainability in the wastewater treatment sector.
