Biocorrosion of Concrete Sewers in Greece: Current Practices and Challenges
| Autor: | Petros Samaras, Efthimios Papastergiadis, Georgios Fytianos, Vasilis Baltikas, Dimitrios Loukovitis, Dimitra C. Banti, Athanasios Sfikas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Geography
Planning and Development Population lcsh:TJ807-830 lcsh:Renewable energy sources Sewage 02 engineering and technology biocorrosion 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Corrosion Forensic engineering concrete sewers Sanitary sewer education lcsh:Environmental sciences 0105 earth and related environmental sciences lcsh:GE1-350 education.field_of_study Renewable Energy Sustainability and the Environment business.industry lcsh:Environmental effects of industries and plants 021001 nanoscience & nanotechnology Current (stream) lcsh:TD194-195 Environmental science 0210 nano-technology business sewer corrosion Corrosion prevention |
| Zdroj: | Sustainability, Vol 12, Iss 7, p 2638 (2020) Sustainability Volume 12 Issue 7 |
| ISSN: | 2071-1050 |
| Popis: | This paper is intended to review the current practices and challenges regarding the corrosion of the Greek sewer systems with an emphasis on biocorrosion and to provide recommendations to avoid it. The authors followed a holistic approach, which included survey data obtained by local authorities serving more than 50% of the total country&rsquo s population and validated the survey answers with field measurements and analyses. The exact nature and extent of concrete biocorrosion problems in Greece are presented for the first time. Moreover, the overall condition of the sewer network, the maintenance frequency, and the corrosion prevention techniques used in Greece are also presented. Results from field measurements showed the existence of H2S in the gaseous phase (i.e., precursor of the H2SO4 formation in the sewer) and acidithiobacillus bacteria (i.e., biocorrosion causative agent) in the slime, which exists at the interlayer between the concrete wall and the sewage. Biocorrosion seems to mainly affect old concrete networks, and the replacement of the destroyed concrete pipes with new polyvinyl chloride (PVC) ones is currently common practice. However, in most cases, the replacement cost is high, and the authors provide some recommendations to increase the current service life of concrete pipes. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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