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 […]
Hög koncentration järn i dricksvatten – en potentiell hälsorisk / Elevated concentration of iron in drinking water – a potential health risk
Iron is an important nutrient, and is included in e.g. haemoglobin. It is excreted in very small amounts. High intake, mainly from Fe in medicines or supplements, may cause bloody diarrhoea, and later acidosis, liver- and kidney damage and heart failure. Fe from drinking water is infrequently discussed. 1. Cows and calves on a farm […]
Om det antika Greklands vattenförsörjning / On the water supply of ancient Greece
The development of the ancient water supply of Greece is described in brief and the central causes for why Greece has so many different technical solutions discussed. The probably most important reason to the multitude of technical solutions is that the city-states in general had a far-reaching independence. Thus, many city engineers could develop their […]
Environmental Technology Verification: a possibility to improve implementation of innovative technologies in the water sector / Verifiering av miljöteknik: En möjlighet att förbättra implementeringen av innovativa vattenreningstekniker
New technologies in the water sector can make treatment processes more efficient at lower total cost and with less environmental impact, but it is often difficult for new technologies to get from research to market. Therefore EU has proposed a number of measures to facilitate uptake of new technologies. One is the implementation of testing […]
A feasibility study on sustainable wastewater treatment using Constructed wetlands – an example from Cochabamba, Bolivia
The city Cochabamba in Bolivia faces increasing environmental problems and health risks due to insufficient wastewater treatment in peri-urban areas. This study evaluates the treatment efficiency of a horizontal subsurface flow (HSF) constructed wetland, built by the foundation AGUATUYA, and investigates the applicability of the method in Cochabamba. The wetland reduces BOD5 by 80–97 %, […]
FASTLÄGGNING AV TUNGMETALLER I TVÅ ÖVERSILNINGSYTOR FÖR TRAFIKDAGVATTEN I MALMÖ / Accumulation of heavy metals in two Vegetative Filter Strips treating road runoff in the city of Malmö, Sweden
This paper evaluates the accumulation of the heavy metals cadmium, chromium, copper, nickel, lead, zinc and the effect of deicing salt in two Vegetative Filter Strips in an eight years old facility in southern Malmö. The two Vegetative Filter Strips were the road shoulder and the last step in the treatment facility after a swale, […]