Alla artiklar

The removal efficiency of iron from ground-water for drinking water production is related to iron physico-chemical forms (species). An ion-exchange method was suggested for iron speciation analysis in groundwater. This method is based on the sorption of negatively charged iron species, mainly organically bound iron, on to DEAE cellulose anion-exchange resin, and positively charged species, […]

The saturator system is the most cost consuming part in DAF operation and optimization of the used methods is of great economical interest. An ejector-based system for use in a pilot plant was evaluated with novel air collecting methods. Three ejectors with increasing size were examined and a relation between ejector water velocity and a […]

Since the 1950s, different water management associations characterised by voluntariness are taking part in the Swedish water administration. Certain conditions prevail regarding the co-ordinated recipient monitoring and due to the Act on water associations. The act strictly regulates the purpose with this kind of association; to promote appropriate utilisation of watercourses. Those actors given prior […]

Some of the brewing industry’s special quality demands – in addition to current legislation – on the water raw material are briefly discussed. To avoid oxidative quality deterioration of the products, the content of oxygen as well as compounds capable of catalysing oxidation must be kept at a very low level. Similarly, residual chlorine must […]

A theoretical and experimental study has been performed to give a basis for recovery of phosphorus and Other products from sewage sludge and ash with application to Henriksdal wastewater treatment plant (Hultman et al., 2002). Special attention is given in this article on the use of supercritical water oxidation followed by phosphorus recovery (Aqua Reci). […]

Residents’ daily routines and the construction of residential buildings are important ingredients in a strive towards a sustainable society. City councils, building companies, and infrastructure service providers develop ways to conserve evergy and water. However, increasingly recognized is the importance of the residents’ willingness to contribute to achieving the environmental goals. Here is presented an […]

The monitoring programmes for Swedish waste receiving waters are designed according to conditions existing 40-50 years ago. Today there is a strong need to renew these programmes. They don’t include information about changes in primary pollution load, which means that cause and effect can’t be studied. In addition, a lot of unnecessary monitoring is performed […]

Research on sustainable management of the coastal zone is motivated by the fierce competition for natural resources between different categories of users along the coast. Knowledge-based management will be able to base its decision-making on information representing the complex nature of the coast. The research carried out in the research programme Sustainable Coastal Zone Management […]

This paper analyses the history of recycling from the mid-19th century to the present ”recycling society”. New chemical and sanitary theories made the recycling idea boom in the 1850s and during the second half of the century major tests were made with closets separating urine and faeces, factories for extracted faeces and sewage systems for […]

During the autumn and winter of 2000/2001, excessive rainfall occurred over large parts of the Lake Vänern drainage basin and caused floods especially in Lake Glafsfjorden. As a consequence, it was decided within the Swedish Regional Climate Modelling Programme (SWECLIM) to produce water resources scenarios for the Lake Vänern region. The scenarios were based on […]