Sewage system Al Nasr, Iraq

Client
Governorate of Baghdad

Project
A sewer system was designed for the villages in the vicinity of Al Nasr in the Governorate of Baghdad. As yet, there is no sewage available in this area (about 750 ha). Additionally there is no WWTP (waste water treatment plant). The sewer design proposes the construction of a waste water sewer, rainwater sewer as well as the construction of a waste water treatment plant for the eventual total of 400,000 inhabitants. Among the challenges in the design were a varying elevation terrain and the limited number of available pumping station sites. Another subsequent hurdle was the lack of sufficient capacity drains and the large distances between individual areas.

The design for the waste water system consists of eight separate basins, each equipped with its own pumping station. Via a combined pressure pipeline system, the pumping stations discharge onto a collection main. This large diameter pipe, which goes to the designed WWTP, also serves as a buffer to equalize the supply intended for treatment. The discharge pipe system is designed in such a way that pumping stations pump the desired flow in both single loop as well as in the entire collective loop case. 

Due to insufficient water surface, rainwater is also pumped through. Each pumping station is to be equipped with a rainwater compartment. The individual pressure pipes discharge into a location close to the purification plant that is going to be built. To absorb peaks in the rainfall, the specially designed gravity systems can store large amounts of water. In spite of the size of the basins, the largest pumping station nevertheless has a pumping capacity of 5000 m3/h.

The completed drainage systems have been developed in detail and prepared for tendering.

Contact person
D.W. van Dalen
+31 184 677 500