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Construction works of water and sewerage utility lines of Vääna-Jõesuu: Part 4


Civil engineering

Energy supply

Concrete works


Description of work




Merko has completed the fourth and final phase of construction of Vääna-Jõesuu’s public water supply and sewerage piping as well as waste water pumping stations. A vacuum station and waste water pumping station were built in the Puraviku tee and Nõmmerohu tee area, as well as 3.8 km of drinking water pipelines and 4.1 km of sewerage pipelines, including nearly 3.6 km of vacuum sewerage pipelines. The benefit of vacuum sewerage is efficiency – the sewerage pumping station does not have to pump excess water, since the watertight vacuum sewerage system takes in significantly less water from rainfall, snowmelt, leaking pipelines and wells than ordinary sewerage systems. The vacuum sewerage tanks are waterproof and the tanks’ lids are 10-20 cm above the ground to prevent rainwater from leaking in from the lid. Additionally, each tank is equipped with sensors to monitor the flow of each client’s waste water. Any increase in flow is automatically picked up by the sensor and notifies a maintenance technician. Ordinary sewerage systems do not have this monitoring capability and major leaks are usually only discovered by chance or when some other problem is being addressed.

OÜ Strantum
Name of the project:
Construction works of water and sewerage utility lines of Vääna-Jõesuu: Part 4
Civil engineering
Type of construction:
Water and sewerage pipelines, storm water drain lines
Description of work:
New building
Vääna-Jõesuu, Harjumaa
Beginning of the project:
Year of completion:

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