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2004-2

FLAGELLATEN EUGLENA GRACILIS RÖRELSEFÖRMÅGA KAN AVSLÖJA GRADEN AV GIFTIGHET (KADMIUM) I VATTEN MED HJÄLP AV MÄTMETODEN ECOTOX / Assessing Euglena gracilis motility using the automatic biotest ECOTOX application to evaluate water toxicity (cadmium)

The interest in testing of water and wastewater for toxic compounds has increased in the last few years with rsing pollutant levels from industry and with rising sensibility towards environmental problems. In order to get an early warning signal of environmental conditions the use of unicellular organism are recommended since they respond quickly and are […]
Författare N. G. A. EKELUND and K.A. ARONSSON
Nyckelord (Keyword) Euglena gracilis, motility, gravitaxis, cadmium
Årgång 2004
Nummer 2
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2004-2

BERÄKNING AV KOSTNADER FÖR MINSKAD KVÄVEBELASTNING PÅ EGENTLIGA ÖSTERSJÖN / Costs of reducing nitrogen loads to Baltic Proper

Sweden has implemented measures for reducing nitrogen loads to the Baltic Sea since the beginning of 1980s with an aim of doing this in a cost effective way. Cost effective nitrogen reduction is defined as minimum cost for achieving prespecified nitrogen reductions. The costs of measures are then determined by the cost at the location […]
Författare ING-MARIE GREN och KATARINA ELOFSSON
Nyckelord (Keyword) Cost effectiveness, marginal costs, nitrogen transports, input-output analysis, Baltic Sea
Årgång 2004
Nummer 2
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2004-2

OPTIMISATION OF OPERATION AND REDUCTION OF LEAD CONCENTRATION IN THE LEACHATE TREATMENT PLANT AT SPILLEPENG LANDFILL, SWEDEN / Optimering av en lakvattenreningsanläggning för blyfällning vid Spillepeng

The possibility to optimize a landfill leachate treatment plant in order to reduce the lead content by precipitation has been investigated. The precipitation takes place when an ash cell leachate is mixed with a biocell leachate in a treatment plant. The influence of precipitation by pH, leachate flows and aeration was studied. Standard operational conditions […]
Författare A. ANDERSSON, M. FAIGNANT and K. M. PERSSON
Nyckelord (Keyword) Landfill leachate, lead precipitation, pH, operational parameters, ash, alkalinity, heavy metal.
Årgång 2004
Nummer 2
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2004-2

MAPPING OF GROUNDWATER DISCHARGE AREAS / Kartering av utströmningsområden

Detailed knowledge of groundwater discharge areas is needed, among others, in those cases where polluted groundwater may threaten surface water quality. We present a method of studying the discharge areas by sampling shallow groundwater with mini-piezometers and measuring water conductivity and/or hydraulic head. Two case studies from the rivers of Björkaån near Sjöbo and Braån […]
Författare VLADIMIR VANEK
Nyckelord (Keyword) groundwater-surface water relationship, discharge areas, mini-piezometer, water conductivity, Sjöbo, Teckomatorp
Årgång 2004
Nummer 2
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2004-2

MONITORING OF NITROGEN REMOVAL PROCESSES BY USE OF CONDUCTIVITY MEASUREMENTS / Övervakning av kvävereduktionsprocesser med hjälp av konduktivitetsmätningar

A newly developed technology for nitrogen removal from ammonium-rich streams comprises two biological steps. In the first step, about half of the ammonium is oxidized to nitrite (partial nitritation) and in the second one, the remaining ammonium reacts with the formed nitrite into nitrogen gas (Anammox; anaerobic ammonium oxidation). The system was studied in a […]
Författare BEATA SZATKOWSKA, ELZBIETA PLAZA, JOZEF TRELA and BENGT HULTMAN
Nyckelord (Keyword) Anammox, conductivity, deammonification, digester supernatant, nitrogen removal.
Årgång 2004
Nummer 2
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2004-2

DEAMMONIFIKATION SOM EN NY PROCESS FÖR BEHANDLING AVAVLOPPSSTRÖMMAR MED HÖG KVÄVEHALT / Deammonification as a new process for treatment of wastewater with a high nitrogen content

Pilot plant-scale experiments have been carried out to study a new technology for nitrogen removal from digester supernatant. The plant comprises two parallel lines, which now operate as a two-step process. Two pilot plant reactors (each volume of 2 m3) were filled with Kaldnes rings up to 50 % of their volume. In the First […]
Författare JOZEF TRELA, ELZBIETA PLAZA, BEATA SZATKOWSKA, BENGT HULTMAN, JAN BOSANDER och ALF-GÖRAN DAHLBERG
Nyckelord (Keyword) anammox, deammonification, digester supernatant. nitrification, nitrogen removal.
Årgång 2004
Nummer 2
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2004-2