In wastewater treatment plants, operating conditions are extremely aggressive: constant humidity, chemical agents, corrosive gases and the presence of activated sludge cause progressive degradation of metal and cement surfaces.
To prevent plant downtime, guarantee structural safety and ensure service continuity, it is essential to plan periodic maintenance and protection interventions.
Donelli Alexo and Impresa Donelli work on new and existing structures, offering a complete service both in-shop and on-site.
Main areas of intervention:
- Biological and physical-chemical tanks;
- Sedimentation, digestion, thickening and flotation tanks;
- Concrete tracks and walkways exposed to wear, frost and chemical attack;
- Metal structures subject to corrosion, such as augers, agitators, grates and pipes;
- Internal walls and ducts, even when in operation.
Services offered:
- Restoration and reconstruction of concrete surfaces with high-performance technical mortars;
- Sandblasting and high-pressure washing for the preparation of metals and concrete;
- Application of protective anti-corrosion and waterproofing cycles resistant to extreme pH, abrasion, sulfides and acids;
- Seamless coatings to ensure the hydraulic seal and waterproofing of tanks;
- Long-lasting protection of mechanical components subject to cavitation, erosion or continuous exposure to aggressive liquids.
Donelli Alexo works on mechanical components, tanks and prefabricated modules in its factory, with maximum precision and rigorous controls.
Impresa Donelli directly manages on-site interventions, even on active plants, ensuring timeliness, reliability and full compliance with environmental requirements.
