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.
Because the mains are shallow and operate under vacuum there is little chance of infiltration, and thus permitting the use of smaller treatment plants, or increasing the effective capacity of existing ones.
Enhanced Safety for the System Owner and Operators
Minimal risk of operator exposure to sewer gasses like CH4 and H2S. Vacuum mains are less likely to suffer blockages and do not require cleaning. There are no deep chambers, and in most cases, no confined space entries are required to maintain the system.
Benefits for you
Power is only required at the pump station. The collection pits are usually located outside the customer’s property.
There is no noticeable difference to the customer, as traditional gravity transports the waste water from the customers’ sewer to the vacuum collection pits.
Minimal impact during construction in ecologically sensitive developments and eco-villages.
Lower water consumption when used in conjunction with vacuum toilets.
Virtually impossible for discharge to the environment through leakage as the system is operating under vacuum.
Two pipe systems are possible for separate transport of urine and black waste using urine separating toilets, thus allowing greater re-use possibilities. This also reduces harmful nutrients from entering the environment.