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ArtikelPROJEKT KALKNING - KVICKSILVER - CESIUM - en sammanfattning av projektet i Örebro län / PROJECT LIMING - MERCURY - CESIUM - a summary of the project in the Örebro county, Sweden PELLE GRAHN, sid 211-223This project is a summary of the work carried out within the project Liming - Mercury - Cesium in the Örebro county. ArtikelBELASTNINGSMODELLER FÖR NÄRSALTER FÖR BEDÖMNING AV FISKODLINGARS MILJÖPÅVERKAN I MARIN MILJÖ / Nutrient Loading Models for the Assessment of Environmental Effects of Marine Fish Farms MATS WALLIN and LARS HÅKANSON, sid 224-236The aim of this paper is to present and discuss some results from the project "The Coast As a Natural Resource". The overall aim has been to attempt to develop new scientific criteria, methods and modArtikelPROVTAGNINGSMETODIK VID BESTÄMNING AV JÄRNKONCENTRATION I DRICKSVATTEN / Sampling Methods for Determination of Iron Concentration in Drinking Water LARS ENANDER, sid 237-243High concentrations of iron in drinking water, redwater, is a problem in some parts of Gothenburg. ArtikelRESTORATION OF LOWLAND STREAMS: THE BUILDING BLOCKMODEL ROBERT C. PETERSEN JR., LENA B.-M. PETERSEN and JEAN O. LACOURSIERE, sid 244-249In many agricultural areas the small streams have been reduced to drainage ditches. This not only has destroyed important natural habitat but has reduced the self cleaning and nutrient reduction abiliArtikelFALKENBERGS KOMMUN - OKOME AVLOPPSRENINGSVERK Kvävereduktion i biologiska dammar ROLF JONSSON, sid 250-255Okome samhälle har ca 180 personer vilka är anslutna till reningsanläggningen som utgöres av 2 st biologiska dammar. ArtikelNORWEGIAN STRATEGIES IN THE TREATMENT OF MUNICIPAL WASTEWATER TOWARDS THE REDUCTION OF NUTRIENT DISCHARGES TO THE NORTH SEA H. ØDEGAARD, B. PAULSRUD, T. BILSTAD, and J. E. PETTERSEN,, sid 259-264The paper deals with a research programme that the Norwegian environmental control authorities have established in order to be able to recommend how the municipal discharges of nutrients to the North ArtikelDESIGN OF WASTEWATER TREATMENT PLANTS USING SUBMERGED BIOLOGICAL FILTERS FOR NITROGEN REMOVAL BJØRN RUSTEN, sid 265-269Two concepts for nitrogen removal using submerged biological filters are discussed, namely pre-denitrification followed by combined precipitation and pre-precipitation followed by post-denitrification
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