2009-4

The availability of drinking water from water wells on southern Gotland is highly limited on account of the fractured limestone bedrock of the region, and one possibility for supplying water in this region is to collect rainwater from roofs. For several years, rainwater was collected from a roof on southern Gotland in order to supply […]

This paper reviews the acoustic conditions in water distribution pipes, comparing a typical background noise with the noise that can be registered when a leak is present. Five different acoustic characteristics are discussed, namely the resonance frequency of the pipe system, the turbulent pressure variations that are caused by a leak, the wide band noise […]

Urbanisation and population growth are increasing the pressures on cities, resulting in people living without adequate provision of water and sanitation. This is particularly the case in peri-urban areas surrounding urban centres in the developing world, where expansion of infrastructure cannot keep pace with rapid urbanisation. The problem is accentuated by peri-urban areas falling between […]

Shallow groundwater is an important factor contributing to the deterioration of the Pharaonic monuments in Egypt. The capillary zone of the soil layers reaches the ground surface, and constant transport of salts and water takes place in an upward direction due to evaporation. The result of this is a concentration of salts in the upper […]

Lake Ringsjön is situated in the south of Sweden, in the county of Skåne. It consists of three shallow lakes in series: Sätoftasjön, Östra Ringsjön and Västra Ringsjön, with the outlet in the river Rönne å. The lake has been eutrophic since the 1960s. One large point-source to the lake is the municipal wastewater treatment […]