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Erlangen Wastewater Treatment Plant - 2030 Expansion Plan: Trace Substance Removal (4th Treatment Stage)
Stand: 11.11.2024
Current wastewater treatment leaves trace substances from pharmaceuticals and personal care products, as well as certain industrial and household chemicals, almost entirely in the treated wastewater.
A fourth treatment stage is necessary to treat the wastewater appropriately before it flows back into the Regnitz River.
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After wastewater is treated at the treatment plant, trace substances still remain in the wastewater. Despite their small quantities, these substances are harmful to the environment and aquatic ecosystems. An additional fourth treatment stage is intended to remove these substances from the wastewater as much as economically feasible before it flows back into the Regnitz River from the treatment plant. The plan is to treat the wastewater further using ozone and activated carbon. To this end, an existing filtration system will be retrofitted and expanded. Additional photovoltaic systems and two more storage tanks for sewage gas are intended to ensure energy-neutral operation.
The entire expansion project has been underway since 2020. The cornerstone for the expansion of the fourth treatment stage will be laid in 2024. Construction is scheduled to be completed in 2027.
According to the current draft plan, the total cost is approximately 36 million euros, of which up to 50% can be covered by grants from the Free State of Bavaria.
Most recently: Resolution by the Construction and Public Works Committee on April 9, 2024