Helping industries in Italy with today’s water management challenges
Learn more about our innovative membrane DEEPEST technology
Key figures
500,000 m³
Of challenging water treated every year
+80%
Of water recovered and reused by our full-service plants
100%
Renewable energy used at our company sites
+50
Industrial sites managed in O&M, also remotely monitored with digital solutions
Innovating water, empowering industry
Sustainable water management:
We develop integrated strategies to manage the full water cycle, from sourcing and treatment to reuse and discharge, with a focus on environmental compliance, resource optimization, and long-term business resilience. Our solutions help reduce water dependency and support ESG goals across industrial and municipal sectors.
Operations & Maintenance (O&M)
Our full-scope O&M services ensure consistent plant performance, regulatory compliance, and cost-effective operation. From predictive maintenance to real-time monitoring, we take full responsibility for operational excellence, allowing clients to focus on their core business with peace of mind.
Research and Development (R&D)
Sustainability and innovation drive everything we do. Our in-house R&D and collaborations with academic and industry partners lead the development of advanced treatment technologies that address today’s most critical water and environmental challenges.
Water as a Service (WAAS)
Our WaaS model delivers flexible, performance-based water treatment services. We design, build, and operate water infrastructure for our customers, turning capital expenditures into predictable operational costs while ensuring measurable results in sustainability and efficiency.
- Industrial
- Municipal
Membrane filtration
- Process water
- Industrial water
- PFAS
- Micropollutants
- Wastewater
- Drinking water
- Source water
- Rainwater
At Nijhuis Saur Industries (NSI), part of Saur Group, we deliver membrane filtration solutions that drive water reuse, resource recovery, and environmental compliance. Our membrane (...)
- Industrial
- Municipal
Aerobic treatment
- Industrial water
- Wastewater
Aerobic biological treatment is a process that uses oxygen and microorganisms to remove COD and BOD, breaking down organic pollutants present in the wastewater into simpler, non-harmful (...)
- Municipal
- Industrial
Filter and screening systems
- Wastewater
- Drinking water
- Industrial water
Filter and screening systems remove large particles from surface water and wastewater. By capturing debris early, they prevent pipe blockages and protect your equipment, helping (...)
- Industrial
- Municipal
Coagulation & Flocculation
- Industrial water
- Process water
- Drinking water
- Wastewater
Our coagulation and flocculation solutions are engineered to support efficient solid-liquid separation across industrial and municipal applications.
- Municipal
- Industrial
Dissolved Air Flotation solutions (DAF)
- Drinking water
- Wastewater
- Industrial water
- PFAS
Our DAF systems are engineered to provide high removal efficiency, operational flexibility, and reliable performance under varying conditions.
- Industrial
- Municipal
Anaerobic wastewater treatment
- Industrial water
- Resource Recovery
Anaerobic wastewater treatment is a very effective and sustainable way of removing biodegradable organic compounds (COD/BOD) from wastewater without using oxygen. As the organic (...)
- Industrial
- Municipal
Biogas desulfurization
- Wastewater
- Resource Recovery
- Industrial water
- Sludge
Where organic material is anaerobically degraded, biogas will be produced. In order to utilize this biogas, it needs the right quality, pressure and humidity. H2S is a specific (...)
- Industrial
Demineralized Water Treatment
- Process water
- Industrial water
At Nijhuis Saur Industries (NSI), part of Saur Group, we deliver high-performance demineralized water treatment solutions for industrial steam and heat systems. From boiler feedwater (...)
Certifications and accreditations
At Sodai, certifications are not just a formality — they reflect our daily commitment to quality, responsibility, and sustainable progress.
