Sanitation network sulfide modeling as a tool for asset management. The case of the city of Murcia (Spain)
| Autor: | Luis G. Castillo, Juan Manuel García-Guerrero, Luis Altarejos-García, Alvaro Sordo-Ward, José A. Carrillo, Francisco-Javier Pérez de la Cruz, Juan T. García, Antonio Vigueras-Rodríguez, Pedro D. Martínez-Solano |
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| Přispěvatelé: | Grupo de Ingeniería Hidráulica, Marítima y Medioambiental (Hidr@m), Empresa Municipal de Aguas y Saneamiento de Murcia (Emuasa) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Discretization
Sanitation 0208 environmental biotechnology Geography Planning and Development hydrogen sulfide TJ807-830 02 engineering and technology 010501 environmental sciences Management Monitoring Policy and Law computer.software_genre TD194-195 01 natural sciences Civil engineering concrete corrosion Renewable energy sources Corrosion Asset management Systems management Calibration GE1-350 Sanitary sewer 0105 earth and related environmental sciences 3305.15 Ingeniería Hidráulica Environmental effects of industries and plants Hydrogen sulfide Renewable Energy Sustainability and the Environment business.industry Modeling Concrete corrosion modeling 020801 environmental engineering Environmental sciences Wastewater asset management Environmental science Ingeniería Hidráulica business computer |
| Zdroj: | Sustainability, Vol 12, Iss 7643, p 7643 (2020) Repositorio Digital de la Universidad Politécnica de Cartagena instname Sustainability Volume 12 Issue 18 |
| Popis: | Hydrogen sulfide (H2S) generated in sewer networks induces corrosion which today constitutes the main cause of deterioration of concrete pipes. Information regarding the H2S concentration inside sewer networks, as well as its control and reduction, has become one of the most important concerns in sanitation systems management nowadays. Modeling sulfide dynamics is the key to understanding corrosion processes. A dynamic model (called EMU-SANETSUL) was developed to calculate the H2S concentration in both the water and the gas phases of the main sewers of the city of Murcia (Spain). The model was calibrated with data from field measurements taken from both the gas phase and wastewater. Samples were taken in the network from 2016 to 2019. The model achieved an accuracy index and error index in the ranges of 57% and 15%, respectively. Empirical equations of reaction are used, and calibration parameters are detailed. The code uses an explicit discretization technique, named the Discrete Volume Element Method (DVEM). A map with the annual average concentration of H2S at the gas phase inside each pipe of the simulated network is presented. Values are compared with the mechanical deterioration inventory from closed-circuit television (CCTV) inspections performed by the Municipal Sanitation Company of the city of Murcia (EMUASA). Mechanical deterioration of pipes has diverse causes, including corrosion of pipes by H2S. Sections with high H2S concentrations that match with mechanical wear can be considered susceptible to being prioritized when rehabilitation works are being planned. Therefore, H2S concentration modeling provides valuable information for asset management of the sewer network. This research was funded by the Municipal Sanitation Company of the city of Murcia (EMUASA), grant numbers 4904/17IC-C and 5397/18IC-C from 2016 to 2019 for the Study of preventive and corrective measures to be applied in the sewerage network to minimize corrosion in the concrete pipes of the sewerage network of the city of Murcia by the action of hydrogen sulfide. |
| Databáze: | OpenAIRE |
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