Research Article
Apr 1971
Lignosulphonates in Lake Päijänne Water
Author: Seppo PrihaAuthor Affiliations
Publication: Journal of the Sanitary Engineering Division
Volume 97, Issue 2
Abstract
The water requirements of the city of Helsinki and its adjacent urban areas can be satisfied from the present sources up to about 1978. In order to meet the demand from the 1980's on, water will be conveyed to Helsinki in a 120-km long rock tunnel from the southern end of Lake Päijänne, the central lake of the Kymi River Basin. The total volume of the lake is approximately 17.3 billion cu m as measured from mean water level. Industrial and domestic wastewaters are released into the lake and water courses empty into it. These wastes are mostly made up of the effluents of pulp mills and the spent liquor from the cooking processes. The lignosulphonic acids in these wastes have spread more or less over the whole lake and form an important factor in judging its water quality and suitability as a supply for drinking water purification. The Water Examination Bureau at the Helsinki City Waterworks has carried out water quality studies on the lake since 1965. These studies include measuring lignosulphonate content at sampling stations in central and southern parts of the lake and parallel pilot plant treatment runs with Lake Päijänne water and water from the present raw water supply.
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Published In
Journal of the Sanitary Engineering Division
Volume 97 • Issue 2 • April 1971
Pages: 191 - 207
Copyright
© 1971 American Society of Civil Engineers.
History
Published in print: Apr 1971
Published online: Feb 12, 2021
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Authors
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Seppo Priha
Chief, Construction Dept., Helsinki City Waterworks, Helsinki, Finland
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.