An estimation of the magnitude of future mean high water levels in Oresund and the south-west Baltic Sea is presenred together with a brief discussion of probable causes and consequences. The data material used is based on sea-level measuremenrs and observations made during the last 50 years by the bascule- bridge watch guard in the […]
Författare
STEN BLOMGREN och HANS HANSON
Nyckelord (Keyword)
Beach Erosion, Climate Change, Greenhouse Effect, Sea-level Rise
Årgång
1996
Nummer
2
Utgåva
To optimize the alkaline leaching technique for quanufication of biogenic silica in marine sediments, different pretreatment methods were evaluated. Marine sedimenrs were pretreated with fumes of concenrrated hydrochloric acid, hydrochloric acid solutions or/and hydrogen peroxlde prior to extracrion of biogenic silica. The acid pretrearment removes carbonates and meral oxides coaung the biogenic silica surface, which […]
Författare
ANGELA LANDÉN, OLA HOLBY and PER O. J. HALL
Nyckelord (Keyword)
Biogenic silica, marine sedimenrs, determination, pretreatment, sample size
Årgång
1996
Nummer
2
Utgåva
This paper presents the results of a study on blockages in sewer pipes in 10 Swedish municipalities. The blockage rate has been studied over a ten year period. There was no trend of increase or decrease of the blockage rate over the studied period. The blockage rare was found ro be higher in the periodjanuary […]
Författare
VIVEKA LIDSTRÖM
Nyckelord (Keyword)
Blockage, sewer, maintenance
Årgång
1996
Nummer
2
Utgåva
The research program STAMP (Control and Operacion ofWastewater Trearment Plants – New Merhods and New Process Technology) was introduced by NUTEK in the year of 1991. In the consortium of Stockholm a close cooperarion has been esrablished between Stockholm Water Ltd. and two departments of Royal Institute Technology. Those are Dept. of Warer Resources Engineering […]
Författare
FREDRIK GÖHLE and BERNDT BJÖRLENIUS
Nyckelord (Keyword)
Activaied sludge, control strategy, EFOR, sedimemarion, setpoint, simulation, sludge blanket, solids flux, sludge thickening, wastewater
Årgång
1996
Nummer
2
Utgåva
The waste water treatment plant in Ölmanäs, Kungsbacka, Sweden has been enlarged by means of two SBR basins in order to meet more stringent effluent standards with respect to total nitrogen. The plant has been designed for an equivalent capacity of 11 000 inhabkants. The rebuih plant has been operation since the fall of l993. […]
Författare
Stig Morling, Annika Nyberg
Nyckelord (Keyword)
Sequencing Barch Reacror, Biological niirogen removal, Biological phosphorous removal
Årgång
1996
Nummer
2
Utgåva
Författare
Lisa Herland, Anna Lövsén
Nyckelord (Keyword)
China, Guang Dong, Nan Hai, Nan Zhung, Pearl River Delta, fish pond, water supply, satewater treatment
Årgång
1996
Nummer
2
Utgåva
A method for the determination of inhibitory effects of chemicals and waste waters on the nitrification processis presented. The method uses pure cultures of microorganisms, which are immobilized on an alginate carrier. The nitrification rate of the test subsrance or waste water, with a maximum concentradon of 90 vol%, is measured during a period of […]
Författare
MIKAEL KARLSSON, JURGEN MÖLLER
Nyckelord (Keyword)
Inhibition ofnitrificarion, Pure culture ofmicroorganisms, immobilized microorganisms
Årgång
1996
Nummer
2
Utgåva