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Featured researches published by Claes Wase.


Water Research | 1992

Thickening of waste activated sludge by biological flotation

Simona Čiẑinská; Vít Matěj; Claes Wase; Yvonne Klasson; Jakub Krejcí; Gunnel Dalhammar

Waste activated sludge was thickened by biological flotation without polymer flocculant dosage. The BIOFLOT® process utilizes the denitrifying ability of activated sludge bacteria. Gaseous products of anaerobic nitrate reduction cause spontaneous flotation of the sludge suspended solids. Laboratory tests confirmed the dependence of sludge thickening efficiency on available nitrate concentration, flotation time and temperature. Full-scale experiments were performed in a fully automatized unit for discontinuous sludge thickening from wastewater treatment plants with a capacity of up to 5000 I.E. Waste activated sludge from wastewater treatment plants at Pisek. Milevsko and Bjornlunda was thickened from 6.2, 10.7 and 3.5 g/l MLSS to 59.4, 59.7 and 66.7 g/t MLSS, respectively. Concentrations of COD, ammonium and phosphate ions were decreased in sludge water. The average nitrate consumption for bioflotation was 21.2 mg NO1− per 1 g of MLSS of activated sludge. Flotation time ranged from 4 to 48 h.


Archive | 2003

Method and a device for cleaning of crankcase gas

Mats Ekeroth; Claes-Göran Carlsson; Rolf Ridderstrale; Jan Skoog; Göran Ström; Claes Wase


Archive | 2008

METHOD AND DEVICE FOR CLEANING OF A FLUID IN A CENTRIFUGAL SEPARATOR

Rolf Ridderstrale; Claes Wase


Archive | 2006

A method of purifying contaminated oil from particles suspended in the oil in a centrifugal separator

Claes Wase


Archive | 2011

A centrifugal separator

Jie Zheng; Claes Wase; Rolf Ridderstrale


Archive | 2010

CONTINUOUS PROCESS FOR ISOLATION OF OILS FROM ALGAE OR MICRO ORGANISMS

Claes Wase; Rolf Ridderstrale


Archive | 2015

CONTINUOUS PURIFICATION OF MOTOR OILS

Claes Wase


Archive | 2010

Kontinuierliches verfahren zur isolierung von ölen aus algen oder mikroorganismen

Claes Wase; Rolf Ridderstrale


Archive | 2008

Method of purifying contaminated oil in a centrifugal separator using a separation aid and starting liquid

Claes Wase


Archive | 2003

Verfahren und vorrichtung zum reinigen von kurbelgehäusegas A method and device for cleaning of crankcase gas

Mats Ekeroth; Claes-Goeran Carlsson; Rolf Ridderstrale; Jan Skoog; Goeran. Stroem; Claes Wase

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