Conversion of the sewage treatment plant
into a single-stage activated sludge plant
Engineering services
Engineering services as general planner
Special sevices
- Local construction supervision
- As-built plans
- Reinforcement inspection
- Operating cost calculation
- Flow simulation for intermediate and secondary clarification tanks
Client
Stadtwerke Landshut
Christoph-Dorner-Straße 9
84028 Landshut
Contractual relationship
Sole Contractor / General Planner
Processing period
Planning: 2019 - 2025
Construction: 2022 - ongoing
Contact
Frederik Sengl
Project Management
T +49 61 51 85 95-33
f.sengl@dahlem-ingenieure.de
Short description
The two-stage Landshut wastewater treatment plant, built in the 1980s, no longer meets today's requirements for energy efficiency and nitrogen removal. In view of the growing population, the plant is to be converted into a single-stage activated sludge plant, with extensive use of existing basins.
After the converted primary treatment (currently Deni), the wastewater stream is divided. 20% flows to the converted old aeration plant and 80% to the newly constructed cascade denitrification plant. The existing secondary clarification tanks of the trickling filter plant will be converted into secondary clarification tanks for the activated sludge plant, as verified by a CFD simulation.
In an early measure, the old turbo compressors will be replaced with new units that can also be used in the expanded state.
The two-stage Landshut wastewater treatment plant, built in the 1980s, no longer meets today's requirements for energy efficiency and nitrogen removal. In view of the growing population, the plant is to be converted into a single-stage activated sludge plant, with extensive use of existing basins.
After the converted primary treatment (currently Deni), the wastewater stream is divided. 20% flows to the converted old aeration plant and 80% to the newly constructed cascade denitrification plant. The existing secondary clarification tanks of the trickling filter plant will be converted into secondary clarification tanks for the activated sludge plant, as verified by a CFD simulation.
In an early measure, the old turbo compressors will be replaced with new units that can also be used in the expanded state.
Project data
- Capacity of 177,500 PE
- Renovation and repurposing of the existing two-stage plant (high-load activation - trickling filter)
- Renovation of the denitrification basin for preliminary clarification
- New construction of aeration basin (V = 13,000 m³) as cascade denitrification
- New construction of blower station
- New construction of connecting pipes and distribution structures
- Conversion of the intermediate and secondary clarification tanks
- New construction of the associated process and process technology
- Conversion of transformer stations, medium-voltage and low-voltage switchgear
- Decommissioning of the four trickling filters
- New construction of service roads and outdoor facilities
