ORLEN Wastewater Treatment Plant

Project’s context & challenges

To support its biofuel production and environmental goals, ORLEN Południe S.A. invested in a state-of-the-art wastewater treatment plant at its Trzebinia site. The facility needed to treat complex wastewater streams—including industrial, rainwater, and biodiesel effluents—while recovering valuable resources and minimizing environmental impact. The challenge was to deliver a fully automated, safe, and efficient system that could handle diverse influents and support heat and energy recovery.

Customer benefits

Reduced environmental pollution and enhanced water treatment

Clean water discharge into the River Ropa

Biogas production covering heat process consumption (0.7 MW)

Automated process management for safety and efficiency

Treated water reused for equipment cleaning and rinsing

Rainwater storage and reuse

Minimized sludge disposal costs through fermentation and dewatering

Solution

Nijhuis Saur Industries (NSI), part of Saur Group, designed and delivered a turnkey wastewater treatment plant for ORLEN Południe S.A. The system integrates multiple treatment stages including CPI separation, flocculation, dissolved air flotation (DAF), biological MBBR, and anaerobic digestion (ECONVERT-DGF). The plant is fully automated and includes intelligent monitoring to ensure optimal performance and environmental compliance. Biogas generated from sludge digestion is reused for heating, supporting ORLEN’s sustainability goals.

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