Rochlitz Wastewater Treatment Plant - Saxony, Germany

The Rochlitz wastewater treatment plant is located in the town of Rochlitz, in the Mittelsachsen district of Saxony, Germany. It serves a population of approximately 5,618 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (91/271/EEC). The plant is situated inland, away from coastal areas, and its operations are integrated into the regional water management infrastructure. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU directive for agglomerations of this size. Advanced treatment typically includes nutrient removal (nitrogen and phosphorus) to protect sensitive water bodies. The plant has a designed capacity of 8,000 cubic meters per day and reports a discharge volume of 842.70 cubic meters per day, indicating it operates well below capacity. Treated effluent from the plant is discharged into the local water system, which ultimately drains into the Zwickauer Mulde river, a tributary of the Mulde river. The Mulde river flows into the Elbe, which reaches the North Sea. The plant plays a key role in protecting the water quality of the Mulde basin, which supports diverse aquatic life and is used for recreation and agriculture.

The Rochlitz plant discharges into the Zwickauer Mulde river, part of the Mulde river basin, which flows into the Elbe and eventually the North Sea. The Mulde basin is ecologically sensitive, supporting diverse fish populations and serving as a migratory corridor for aquatic species. Advanced treatment at the plant helps reduce nutrient loads, mitigating eutrophication risks in downstream waters.