In our daily work, we make systematic efforts to minimize the most significant environmental impacts of our operations: air emissions, energy consumption, odor nuisances, and environmental impacts caused during project construction.
We employ environmentally sound and energy-efficient technologies and ensure efficient maintenance. We continuously improve our operations and comply with the certified environmental (ISO 14001:2015) and energy management system (ISO 50001:2018) requirements as well as a biogas sustainability scheme. We increase our understanding of the life-cycle impact of our products and use this information to improve our performance.
All sites systematically follow up on any deviations, pro-actively report observations, conduct safety walks, and compile risk assessments. We use reporting tools in the management and reporting of environment-related actions.
We see internal recycling of reject water as an economical and environmentally sound solution for operating the biogas plants. Internal recycling improves the plants’ heat balance and reduces the amount of wastewater. Water consumption is also reduced by utilizing site run-off waters in the biogas process, and by optimizing the production processes. The plants are equipped with efficient technologies for water purification and recovery of nutrients and organic carbon. Increased recovery of nutrients helps to lower the environmental load of effluent before discharging it into a wastewater treatment plant. Some of the nutrient rich excess process water is utilized in the forest industry as a nitrogen source for microbes at wastewater treatment plants.
In our LNG supply chain, sea water is used as ballast water in the vessels. After use, the ballast water is released back into the sea unpolluted. Most of our freshwater consumption is as process water in biogas plants and as tap water in offices.
We strive to reduce the time-to-time nuisances from our biogas plants. We improve odor gas treatment, optimize processes and organize odor observations.
Sand and package materials removed from the raw material stream received for biogas production account for our most significant proportion of solid waste. Most of the waste fractions generated in our operations are recovered or reused.