Impact of effluents from Lyby wastewater treatment plant on the nitrogen content of Lake Ringsjön and Rönne Å River, Sweden
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 […]
A groundwater flow model for water related damages on historic monuments – Case study West Luxor, Egypt
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 […]
The complexity of water and sanitation provision in peri-urban areas in developing countries: the example of Adenta, Ghana
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 […]
Att finna läckor i vattendistributionsledningar underlättas med kännedom om deras ljudegenskaper / Finding leaks in water distribution pipes is made easier with knowledge of their acoustic properties
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 […]
Regnvatteninsamling från hustak på södra Gotland / Rainwater collection from a roof on southern Gotland, Sweden
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 […]
Preparation and Evaluation of a Ce(IV)-La(II) binary hydroxide Adsorbent as Recovery of Waste Ceria Powder From Glass Polishing Process For Effective Arsenic Removal
In this paper Ce(IV)-La(III) binary hydroxide adsorbent, herein referred to as CLH adsorbent, which is a recovery of waste ceria powder from glass polishing process, is used as a novel adsorbent for removing inorganic arsenic (As) from water. The CLH adsorbent is prepared using a combined acid and heating treatment method, which involves refluxing the […]
Extrema regn i Halmstad / Extreme rainfall in Halmstad, Sweden
Within the last decades, the data collection in Swedish municipalities has shown to be valuable with respect to gaining information on the statistics of heavy rain storms. This article is focused on rain data from Halmstad municipality, located in a region of the highest yearly precipitation amounts for Swedish conditions, especially in the interior parts, […]
Shared history of water supply and sanitation in Finland and Sweden, 1860–2000
Sweden and Finland have a long joint history separated in 1809 when Finland became an autonomous Grand Dutchy under the Russian Tsar. The water service sector started developing in urban areas during the latter part of the 19th century. The similarities and differences between Finland and Sweden in the water and wastewater services evolution are […]
Reflexioner om vatten – hur hållbar är vår svenska avloppsrening? / Is Swedish wastewater treatment sustainable?
Sustainability reflects one of the major issues for mankind today, and is possibly one of the key factors for a long time survival on planet earth. Sustainability in this paper is discussed from the viewpoint of water protection and especially wastewater treatment. Focus is done with respect to municipal wastewater management. It is acknowledged that […]