Reduced Excavation and Pipelaying Costs
The vacuum mains can be laid with minimum cover, and do not need to be laid on a grade towards the pump station. This makes vacuum sewerage the right system where the following conditions exist:
- High Water Table
- Unstable Soils
- Restrictive Construction Conditions
Vacuum mains can be common trenched with other utilities and use smaller diameter pipes compared to equivalent gravity sewers.
No manholes or access chambers are required for vacuum mains.
High pipeline velocities mean fewer blockages and better aeration and mixing of wastewater. This pre-treatment reduces treatment at the WWTP, therefore reducing wastewater system operating costs.
Leaks cannot go unnoticed, and any leaks do not discharge waste water to the environment.