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, […]
Persistence and competition of denitrifying bacteria in a dual-strain biofilm subjected to a natural wastewater flora
Bioaugmentation for enhanced wastewater treatment performance depends on survival, maintained activity and retention of the inoculated microorganisms in the reactor. Biofilms could be suitable mediators of bioaugmentation due to the retention of the immobilized cells and the protection offered by the biofilm matrix. The overall objective of this study was to investigate the potential of […]
Ytan eller Botten? – en studie av avloppsvattnets inblandning & förhållanden i Inre Valdemarsviken / Surface or deepwater outlet – a study of effluent water entrainment & conditions inside Inre Valdemarsviken
The deepwater of the water area known as Inre Valdemarsviken, situated on the Swedish east coast, is a recipient of effluent water. Suspicions has arisen concerning bad conditions in the mouth area due to abnormal presence of bacteria in the surface water, overgrown perennial algae and turbid water. This may be effects of effluent water […]
Monitoring av läckage av kväve och fosfor från åkermark i Leningrads län till Finska viken / Monitoring of Nitrogen and Phosphorus losses from arable land in Leningrad County
The Gulf of Finland is one of the most eutrophicated parts of the Baltic sea. Besides the city of St Petersburg the share of nitrogen and phosphorus from agriculture have been in focus. A new Swedish-Russian long-term cooperation have started in the county of Leningrad. The purpose is among others to establish monitoring stations. These […]
Worldwide Oil Prize, Desalination and Population Growth Correlation Study
In this paper, the investment in new desalination capacity, expressed as daily production capacity, was studiedas a function of oil production and population increase for a large group of countries for the last 25 years. These countries were selected for their large desalination production and Sweden presented as reference. Oil production correlated well with investments […]