Capacity expansion of Karlsdorf-Neuthard wastewater treatment plant in Germany
Extending treatment capacity
AFRY supports the Kammerforst Wastewater Association in expanding and upgrading the Karlsdorf-Neuthard wastewater treatment plant, with construction planned to start in summer 2026.
Capacity expansion from 28,500 to 42,000 population equivalent
AFRY has been awarded the contract by the Zweckverband Abwasserverband Kammerforst (Kammerforst Wastewater Association) for the capacity expansion of the Karlsdorf-Neuthard wastewater treatment plant in the district of Karlsruhe in Baden-Württemberg from the current 28,500 PE to 42,000 PE.
The project aims to switch the sludge stabilization process from aerobic to anaerobic.
The mechanical cleaning stage is expanded by constructing a primary settling tank.
Furthermore, the construction of a digester, a gas storage tank, a gas flare and a combined heat and power plant for the conversion to anaerobic sludge stabilization is planned.
The biological treatment stage will also receive a new blower station. The aeration and secondary clarifiers will be hydraulically optimized.
Additional study surveys for optimization purposes
In addition to the construction measures, three studies will be carried out as part of the project, which will serve to further optimize the wastewater treatment plants.
These are:
- a hydraulic calculation of the system
- a feasibility study on the use of the heat potential in the effluent of the wastewater treatment plant and
- a feasibility study for the construction of a fourth purification stage
Construction on the project is scheduled to begin in summer 2026 – with the aim of completing all measures by the end of 2028.
