ledningsförnyelse
View original picture , opens in new tab/window

Resource efficient and coordinated maintenance and renewal of horizontal water and road assets

Published: 23 January 2019

The water and sewage pipes in Sweden are aging and the renewal is low, even though there are many leakages on the drinking water pipes and a lot of infiltration and inflows into the sewers. As much as 20 % of the produced drinking water does not reach the customers and the sewers are transporting the double amount of wastewater than flushed. The consequences of these high flows are overflows of untreated wastewater to the receiving waters and increased costs for transport and treatment at the wastewater treatment plant.

Rehabilitation of the pipes for water supply and sewage may be conducted when the technical lifespan of the pipes has come to an end. Pipes can also be rehabilitated because the other pipe types really need to be renewed or new asphalt is needed on the street. A pipe section can also be exchanged due to lack of hydraulic capacity even though the technical pipe status is quite good. These strategies imply that pipes are exchanged although they have quite good function and are not always resource efficient.

We will therefore in this project develop resource efficient strategies for long-time planning of water and sewage pipe rehabilitation with focus on optimized coordination of renewal of pipes and roads; this to create a more resource efficient renewal of pipes that also will lead to less disturbances for shop keepers, inhabitants and the traffic.

In the project, routines for efficient and quality ensured data about e.g. pipe status will be developed to maximize the reuse and sharing of data within and across municipal departments (I). Furthermore, (II) the lifetime estimates of sewer and drinking water pipes will be improved to derive asset survival functions closer to the deterioration behaviour. The spatial correlation of deterioration rates for sewer and water pipes as well as roads will also be investigated (III) to be able to optimize and coordinate the renewal of infrastructure. Based on the work packages (I, II, & III), collected data will be synthesized by statistical evaluations and (IV) strategies for an optimized and coordinated pipe renewal will be developed.

We are also interested in cooperation with municipalities and water utilities to be able to collect data. So, if you are interested in participating feel free to contact us.

Contact

Project Manager

Annelie Hedström

Annelie Hedström, Associate Professor

Phone: +46 (0)920 492309
Organisation: Urban Water Engineering, Architecture and Water, Department of Civil, Environmental and Natural Resources Engineering

Researchers

Youen Pericault

Youen Pericault, PhD Student position

Phone: +46 (0)920 493528
Organisation: Urban Water Engineering, Architecture and Water, Department of Civil, Environmental and Natural Resources Engineering
Emmanuel Okwori

Emmanuel Okwori, PhD Student position, PhD Student position

Phone: +46 (0)920 493311
Organisation: Urban Water Engineering, Architecture and Water, Department of Civil, Environmental and Natural Resources Engineering