Climate consious wastewater handling
Gryaab has a strategy to supply the Gothenburg region with climate efficient wastewater treatment, aiding the region to become climate neutral by the year of 2030.
Wastewater treatment needs energy and chemicals. With a high amount of infiltration and inflow to the sewer system, planned population increase and expected stricter effluent standards, decreasing the climate impact is going to be quite a challenge! The board of directors has thus set a climate strategy to guarantee that climate impact is made an important aspect of every decision The strategy four parts in order to keep the direction towards reduced climate impact for small and large decisions.
Focusing on major points of climate impact
We prioritize minimizing climate impact from major sources of climate impact in the wastewater treatment. Currently, we are work along three tracks:
- Methanol used for denitrification can be reduced by optimizing the process or by buying fossil free carbon sources.
- Nitrogen oxide released from nitrifying trickling filters could be reduced by process optimization or by reconstruction of the nitrification units.
- Less methane could be released from sludge handling with better handling during and after digestion.