Test facility for groundwater remediation with 100 percent renewable energy supply, Bavaria

It also works without a diesel generator or conventional power supply!

A long-term pumping test is being carried out on a former lamprophyre quarry, where mineral oils, metal waste, sewage sludge and hazardous waste such as metal sludge were stored between 1945 and 1970, as a pilot for a potential subsequent safety measure. Energy is supplied via PV modules and a power storage unit.

Water is to be continuously extracted from two wells over a test period of 6 months for later injection of a tracer agent and treated for infiltration using a purification system.
Additional pressure probes and data loggers are installed in 15 surrounding groundwater measuring points for continuous and automatic recording of water levels. The original planning envisaged a self-sufficient emergency power supply, as there was no power connection in the immediate vicinity. Züblin Umwelttechnik GmbH realized the self-sufficient power supply through the use of photovoltaic systems and storage units.
Once the drawdown target was reached and due to clocking well pumps as a result of the pumping, consumption fell sharply at the end of the project.

Special features

• self-sufficient power supply using photovoltaics and storage
• high concentrations of MHC, CHC, BTX, PAH
• Oil phase
• Pumping test

Scope of services

• Well pump
• Water purification system with oil pre-purification, pumping station and activated carbon filtration
• 15 Pressure probes/data loggers