Quantifying the Rapid Sugarcane Expansion for Ethanol Production in the Rio Grande basin, Brazil / Kvantifiering av hastig spridning av sockerrörsplantage på grund av etanolproduktion i Rio Grandes avrinningsområde, Brasilien
The search for sustainable sources of energy has found a realistic replacement to fossil fuels in ethanol and methanol. In response to this trend, sugarcane plantations have rapidly increased in Brazil. In this study, this sugarcane expansion was mapped for the River Grande basin in the northern São Paulo, considering the real extension of the […]
Hydrogeological mapping of treated waste water infiltration using resistivity surveys / Hydrogeologisk kartläggning av infiltration av renat avloppsvatten genom resistivitetsmätningar
This field study constitutes an evaluation of resistivity surveys as a method of following subsurface water transport. An ABEM Terrameter LS was used to detect chloride enriched infiltrating water. A resistivity profile was established at a field site in Omma outside of Sjöbo, Sweden. The profile followed a slope starting atop a glacifluvial sand deposit […]
Energieffektiviserad luftning på Sternö avloppsreningsverk / Energy improved aeration at Sternö Wastewater Treatment Plant
The objective of this study was to improve the aeration efficiency of a mid-size Swedish wastewater treatment plant in full-scale trials. The full-scale trials were performed at Sternö wastewater treatment plant, which was built in 1997 and is designed for 26,000 population equivalents. The biological treatment at Sternö wastewater treatment plant is performed in two […]
Cost functions for predicting capital expenditure of small town water systems in Ghana Kostnadsfunktioner för investeringar i vattenförsörjningssystem i Ghanas mindre tätorter
Using data gathered by the WASHCost project in Ghana, this study uses cost functions to predict capital expenditure for construction of piped water systems for small towns in Ghana. The data was collected from 45 small towns in peri-urban areas in the Volta, Ashanti and Northern regions of Ghana. Correlation and multiple regression analyses are […]
Vatten som ekonomisk vara / Water as an Economic Good
Detta är en översiktsartikel som ger inblick i nationalekonomins syn på och behandling av vatten. Artikeln förklarar begreppet värde och presenterar en rad metoder för att värdera vatten samt vilka svårigheter som finns med vattenvärdering. Vatten som en faktor i den globala ekonomin diskuteras också, samt att en rad möjliga lösningar på vattenrelaterade miljöproblem. Artikeln […]
Pairing multivariate data analysis and ecological modeling in the biomanipulated Lake Engelsholm, Denmark / Parvis multivariat dataanalys och ekologisk modellering i den biomanipulerade sjön Engelsholm, Danmark
A multivariate analysis was applied to monthly climatic, hydrologic and water quality series of Lake Engelsholm, a shallow lake that was subjected to biomanipulation. In this study, we focused on identifying the most important patterns of monthly time series after biomanipulation. Moreover, we tried to quantify how those variables are interconnected with each other. A […]
Avvägning mellan vattenkvalitet, växthusgasutsläpp och driftskostnad – utveckling av dynamiska modeller för integrerad benchmarking av avloppsreningsverk / Balancing effluent quality, greenhouse gas emissions and operational cost – developing dynamical models for integrated benchmarking of wastewater treatment plants
The scope for wastewater treatment plants (WWTPs) widens to consider not only water quality and cost, but also energy efficiency and greenhouse gas (GHG) emissions. The on-going research project, “Development and dynamic analysis of operational strategies for enhanced energy efficiency of wastewater treatment systems” aims to develop a tool for integrated evaluation of energy efficiency […]
Effects of hysteresis and temporal variability in meteorological input data in modeling of solute transport in unsaturated soil using HYDRUS-1D / Effekten av hysteresis och tidsupplösning av meteorologiska indata på modellering av föroreningstransport i den omättade zonen med HYDRUS-1D
A one-dimensional, unsaturated transport model was used to simulate non-reactive transport of solutes. The effects of soil water hysteresis, and temporal variability in precipitation and evapotranspiration input data were evaluated. Simulations were conducted in HYDRUS-1D code for the period 1996–2008 for three different geographic locations in Sweden and for three different soil textures. Simulations were […]