In a constantly evolving urban context, sewerage systems play a key role in protecting public health and the environment. Effective management of wastewater and rainwater is essential to prevent flooding, contamination and damage to infrastructure. This article explores advanced technical solutions for safe, durable and efficient sewerage systems.

Function of sewerage systems

Sewerage systems are responsible for collecting, transporting and disposing of wastewater from residential buildings, industrial facilities and public areas.

They connect users to treatment plants, ensuring purification before final delivery.

They also help to prevent stagnation, flooding and environmental damage, protecting both groundwater and urban liveability.

Types of sewerage systems

There are various configurations of sewerage systems. Separate systems use separate pipes for rainwater and wastewater, while combined systems convey everything into a single network. Systems can be pressurised, using pumps to transport liquids, or gravity-fed, exploiting the natural slope of the ground. Each solution must be tailored to the geographical conditions, urban density and type of wastewater.

To ensure efficiency and safety, sewerage systems must comply with specific technical standards. UNI EN 13476 regulates plastic pipes for non-pressurised underground pipes, while UNI EN 1401 regulates PVC systems. UNI EN 681 and UNI EN 1277 deal with the quality of seals and watertightness. Compliance with these standards is essential to ensure the long life of the system.

Key features of a drainage system

An effective drainage system must guarantee:

• Perfect hydraulic tightness, even in the presence of ground deformation or movement;
• Resistance to chemicals, such as acids, bases, oils and hydrocarbons;
• Mechanical strength, to withstand the weight of the ground and the traffic above;
• Ease of installation, inspection and maintenance, to reduce long-term operating costs.

The role of materials

The use of resistant and durable components is essential: it reduces the need for frequent replacements, improving the overall ecological footprint of the system.

High modulus polypropylene (PP-HM) and compact PVC-U are currently among the most reliable materials for sewerage systems. PP-HM offers excellent mechanical strength and elasticity, ideal for soils subject to movement. PVC-U, on the other hand, stands out for its lightness, ease of processing and chemical stability. Both guarantee recyclability at the end of their life and reduced environmental impact.

PPEcoforte uses triple-layer structured wall pipes. The composition includes an outer UV-resistant layer, an elastic load-bearing layer and a white inner layer with high flow properties. The ring stiffness varies from SN4 to SN16, and the available diameters range from 110 to 500 mm. The socket joint system with locked gasket ensures reliability even in critical conditions.

The PVC Basicline system is made of compact PVC-U and is suitable for non-pressurised underground waste pipes. The fittings offer excellent sealing thanks to BL or Din-Lock elastomeric gaskets, while the smooth inner surface minimises the risk of sedimentation. Also available in diameters from 110 to 500 mm, it is the ideal choice for civil and industrial systems that require fast installation.

Practical Applications

PPEcoforte and PVC Basicline solutions can be used in a variety of contexts:

• Urban construction sites with high building density
• Industrial areas with chemical waste and temperature variations
• Agricultural areas where ease of installation is essential. These systems are also perfectly suited to projects involving the renovation or expansion of existing networks

Designing sewerage systems today requires in-depth technical knowledge, attention to regulations and an ecological vision. The PPEcoforte and PVC Basicline systems are two of the most advanced solutions for meeting the challenges of urban and industrial drainage.

It is essential to remember that investing in the quality, sustainability and innovation of a sewerage system means ensuring long-term functionality, safety for people and respect for the environment.