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Sewerage systems: Overflow problems and renovation methods

Journal Article:

Abstract

Total investments in Finland (1984) spent on sewer systems were roughly FIM 590 million. A big share, about 14 % of this sum (FIM 82 million), was spent on rehabilitation of networks. But is this still enough? According to some evaluations the respective amount should be about FIM 500 million for rehabilitation only. So the question, how to keep the performance of sewer networks satisfactory in the future, is really important. The overflow problem is one of the most serious problems caused by old and improperly working sewer systems. Anyhow, several other aspects of a poor condition of sewers are to be seen: - excess hydraulic loading of treatment plants, - normal maintenance and operation (flushing, opening of clogs) increases, and is more expensive, - unexpected renovation works and interruptions in operation cause e.g. troubles in traffic, odour problems in the environment, hygienic hazards etc., - the performance of other underground networks (water pipes, district heating pipes etc.) may be threatened by earth crushings due to old sewers. In this paper a short description of these items is presented as well as a description of the sewer renovation methods used recently in Finland.
Authors:
Tanttu, Unto [1] 
  1. Plancenter Ltd. (Finland)
Publication Date:
Dec 15, 1987
Product Type:
Journal Article
Resource Relation:
Journal Name: Baltic Sea Environment Proceedings; Conference: Seminar on wastewater treatment in urban areas, Visby (Sweden), 7-9 Sep 1986; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Subject:
54 ENVIRONMENTAL SCIENCES; DISTRICT HEATING; ENVIRONMENT; ENVIRONMENTAL QUALITY; FINLAND; SEWAGE; WATER POLLUTION
OSTI ID:
20775652
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0357-2994; BSEPE4; TRN: FI06$0005079835
Submitting Site:
FIN
Size:
page(s) 15-20
Announcement Date:
Oct 16, 2006

Journal Article:

Citation Formats

Tanttu, Unto. Sewerage systems: Overflow problems and renovation methods. Finland: N. p., 1987. Web.
Tanttu, Unto. Sewerage systems: Overflow problems and renovation methods. Finland.
Tanttu, Unto. 1987. "Sewerage systems: Overflow problems and renovation methods." Finland.
@misc{etde_20775652,
title = {Sewerage systems: Overflow problems and renovation methods}
author = {Tanttu, Unto}
abstractNote = {Total investments in Finland (1984) spent on sewer systems were roughly FIM 590 million. A big share, about 14 % of this sum (FIM 82 million), was spent on rehabilitation of networks. But is this still enough? According to some evaluations the respective amount should be about FIM 500 million for rehabilitation only. So the question, how to keep the performance of sewer networks satisfactory in the future, is really important. The overflow problem is one of the most serious problems caused by old and improperly working sewer systems. Anyhow, several other aspects of a poor condition of sewers are to be seen: - excess hydraulic loading of treatment plants, - normal maintenance and operation (flushing, opening of clogs) increases, and is more expensive, - unexpected renovation works and interruptions in operation cause e.g. troubles in traffic, odour problems in the environment, hygienic hazards etc., - the performance of other underground networks (water pipes, district heating pipes etc.) may be threatened by earth crushings due to old sewers. In this paper a short description of these items is presented as well as a description of the sewer renovation methods used recently in Finland.}
journal = {Baltic Sea Environment Proceedings}
place = {Finland}
year = {1987}
month = {Dec}
}