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Vacuum Sewerage System

System General Information

Vacuum sewerage systems are wastewater collection systems. An air stream generated by differential air pressure drives the wastewater toward a vacuum station. IES is proud to offer the Vacuum sewerage technologies to its clients in Oman with conjunction of its subsidiary Corodex Electromechanic and the technology provider Roediger.

A vacuum sewer system is consists of: i) A vacuum station, where the vacuum is generated, the wastewater is collected, then pumped to a wastewater treatment facility. ii) A vacuum pipeline system, typically consisting of a branched network of vacuum sewer pipe, and collection chambers with sumps and interface valve units.

Wastewater flows by gravity from a house/villa into a collection chamber’s sump. After a given quantity (batch) of wastewater accumulates in the sump, an interface valve automatically opens. The batch volume plus an additional volume of air flows through the open valve and is transported to a centralized vacuum station.

Vacuum sewer pipes are arranged with high and low points in a specific elevation profile. Batches of wastewater come to rest at low points in the pipe. When air is introduced through an upstream interface valve, the wastewater is pushed plug-wise over subsequent high points toward the vacuum station.

Wastewater and air are driven to a collection tank (vacuum tank) at the vacuum station. Vacuum generators (vacuum pumps) maintain vacuum in the tank and sewer pipe. Conventional sewage pumps forward collected wastewater from the collection tank through a force main to wastewater treatment plant.

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