Alla artiklar

A method for tightness testing of pipelines made from viscoelastic materials obeying the power-law is described. Both theory and experiments show that creep effects will be ”frozen in” during a certain period of time, long enough for measuring the tightness of a pipeline or vessel. The time sequence may be scale up and down as […]

Landfill leachate treatment methods are discussed and their effects are reviewed. The lack of agreement between actual treatment effect and the goals and methods that have been proposed by the Swedish Environmental Protection Agency are elucidated. The knowledge of what the recipient that is exposed for land-fill leachate actually can stand is argued as the […]

Wetland Oxelösund was established in 1993 to remove nitrogen from wastewater before discharge to the Sea. Since it was the first full-scale wetland for nitrogen removal in pre-treated municipal wastewater in Scandinavia, an elaborate monitoring program was tied to the operation of the wetland. The basic monitoring was primarily aimed at mass-balance calculations to estimate […]

Local politics can be complicated. However, the construction of a wastewater treatment plant is very seldom a topic for disputes. But in the case of Skurup municipality, Sweden, it grew to become an issue that took 12 years to settle. The local council discussed whether the sewerage water should be treated in a new plant […]

To what extent can infiltration be carried out and which volume can be infiltrated? At the landfill Spillepeng of SYSAV, Malmö, infiltration of leachate has been practiced as a treatment method since 2001. A number of chemical parameters for infiltrating leachate and infiltrated leachate at the landfill Spillepeng have been investigated. Further on, a chemical-hydraulical […]

High population growth and an augmented tourist industry in the Atitlán basin have lead to increases in the amount of wastewater discharged into the lake. The polluted wastewater has a negative effect on the lake’s and streams’ ecosystem in the basin. Drinking water that is taken from the lake or the streams is highly polluted […]

Series of daily precipitation including 89 years from Malmö, Halmstad and Göteborg have been analyzed as well as daily precipitation from 230 stations in Skåne in the period 1961–1990. The distribution in space and time has been investigated, and also the relation between daily rainfall and different parameters. The most extremeindependent events have occurred rather […]

The new world of IT looks like a very fast stream of ever more fantastic ideas and tools. The focus is entirely on the future. In the fields of water supply and sewage systems we use IT-solutions in order to make our daily work more efficient and comfortable. More ore less we have done so […]

Re-use options for sewage sludge are being developed since the disposal of sludge is becoming an increasing problem. The spreading of sewage sludge on agricultural fields as a phosphorus (P) fertiliser is one such option given that it fulfils the requirements for limitation values for metals/toxic substances. The plant availability of P in sludge has […]