Paper Mill WWT: A Challenge Robuschi Won

Case Study

Toscopaper, a leading corrugated cardboard manufacturer in Lucca, faced a wastewater treatment challenge: an outdated system, limited space, and the need to meet surface water discharge regulations. The solution required more than a retrofit—it demanded a tailored, high-efficiency system that could handle complex effluent characteristics and operate within tight spatial constraints.

Robuschi, in collaboration with Italprogetti, engineered a solution that not only met but exceeded expectations. The result: a compact, energy-efficient wastewater treatment system built around MBBR (Moving Bed Biofilm Reactor) technology and Robuschi’s ROBOX SCREW compressors.

Get the complete technical breakdown, performance data, and engineering insights from the Toscopaper installation.

Paper Mill WWT: A Challenge Robuschi Won Case Study

Key Outcomes

COD reduction from 4,500 mg/l to 80–100 mg/l—well below the 160 mg/l discharge limit
System capacity of 1,000 m³/day, with stable performance even under variable load conditions
15–20% energy savings compared to traditional lobe blower systems
Oil-free, low-noise operation with Class 0 certification (ISO 8573-1)
Remote and on-site monitoring every 15 days for performance assurance

Why Robuschi’s Screw Compressor Was the Right Fit

Traditional lobe blowers couldn’t meet the demands of Toscopaper’s tall reactors and tight footprint. Robuschi’s WS 85/3P screw compressors offered:

Higher delivery pressure (880 mbar) for vertical systems
Continuous airflow with inverter-controlled modulation
Reduced energy consumption through precise oxygen dosing
Simplified maintenance via pulley and belt optimization

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FAQs

MBBR (Moving Bed Biofilm Reactor) uses plastic carriers to retain bacterial colonies that break down organic matter. It’s ideal for systems with high COD and poor biodegradability, offering resilience and compact design

Paper Mill WWT: A Challenge Robuschi Won

Case Study

Key Outcomes

Why Robuschi’s Screw Compressor Was the Right Fit

Download the Full Case Study

FAQs

What is MBBR technology and why was it chosen?

How does the system handle calcium and low-biodegradable COD?

What makes Robuschi’s screw compressors more efficient than lobe blowers?

Is this solution scalable to other paper mills?