New construction of 4th treatment stage
Ozonation + Granulated activated carbon
Engineering services
Engineering structures, LPH 1-9
Structural engineering, LPH 3-6
Technical equipment, LPH 1-9
Special service
On-site construction supervision
Client
Wirtschaftsbetriebe Mainz AöRd
Industriestraße 70
55120 Mainz
Processing period
Planning: 2020 - 2024
Construction: 2024 - 2026
Contact
Dipl.-Ing. Mathias Kleffmann
Project Management
T +49 201 89 67-242
a.kleffmann@dahlem-ingenieure.de
SHORT DESCRIPTION
The Mainz central sewage treatment plant is designed for 400,000 PE and will be supplemented by a fourth treatment stage for trace substance elimination. The receiving water body is the Rhine. Trace substance elimination will be carried out in two stages and implemented as a combination of ozonation and subsequent activated carbon filtration. The design water flow rate of the fourth treatment stage is 800 l/s, which will treat around 90% of the annual inflow to the treatment plant.
Ozonation will be carried out in two stages, with the ozone reactors each having a volume of 480 m³ and being fed by one ozone generator (15 kgO3/h) each. The GAK filter consists of 10 cells, each with a volume of 110 m³. A new building will be constructed to house the technical equipment. The roof of this building will be completely covered with photovoltaic panels, increasing the sewage treatment plant's own electricity generation.
The plant is expected to go into operation in the first quarter of 2026.
The Mainz central sewage treatment plant is designed for 400,000 PE and will be supplemented by a fourth treatment stage for trace substance elimination. The receiving water body is the Rhine. Trace substance elimination will be carried out in two stages and implemented as a combination of ozonation and subsequent activated carbon filtration. The design water flow rate of the fourth treatment stage is 800 l/s, which will treat around 90% of the annual inflow to the treatment plant.
Ozonation will be carried out in two stages, with the ozone reactors each having a volume of 480 m³ and being fed by one ozone generator (15 kgO3/h) each. The GAK filter consists of 10 cells, each with a volume of 110 m³. A new building will be constructed to house the technical equipment. The roof of this building will be completely covered with photovoltaic panels, increasing the sewage treatment plant's own electricity generation.
The plant is expected to go into operation in the first quarter of 2026.
Projectdata
- 400,000 inhabitants
- Construction of a fourth treatment stage
- Design water flow rate Q = 800 l/s
- Ozonation
- Activated carbon filtration
- New construction of a technical building with complete photovoltaic panel coverage (approx. 300 kWp) of the roof
- New construction of a transformer station
- New construction of a MID structure
- New construction of an inlet and outlet structure
- Funding for the construction project through the environmental innovation program “Innovative Wastewater Technology”
