| Autor: |
Żywiec, Jakub, Tchórzewska-Cieślak, Barbara, Papciak, Dorota, Domoń, Andżelika |
| Zdroj: |
Desalination & Water Treatment; June 2021, Vol. 226 Issue: 1 p37-51, 15p |
| Abstrakt: |
The aim of the study was to determine the probability of exceeding the normative values of micro-biological parameters in tap water intended for human consumption depending on the operating time of the installation. Based on the results of microbiological testing of water, models of micro-organism growth were developed and the times of the installation operating until exceeding the normative values for selected parameters were determined. The installation operating times were used in life data analysis, which made it possible to examine the probability of water supply with appropriate microbiological parameters. For individual measurement cycles, the time of exceeding the normative parametric value of the total number of microorganisms value at a temperature of 22°C parameters was obtained in the range of 9.38–34.85 h, while for exceeding the normative parametric value of the total number of microorganisms value at a temperature 37°C parameter was obtained in the range of 29.69–48.00 h. The probability of human consumption of water that does not meet microbiological criteria increases with the duration of its stay in the domestic distribution system. Exceeding the normative parametric value of the total number of microorganisms at 22°C may occur after 11.73–41.90 h of installation operation depending on the adopted probability level (10%–99%), while exceeding the normative parametric value for the total number of microorganisms at 37°C may occur after 29.63–81.24 h. Test results can be used for identifying hazards as part of the analysis and risk assessment of domestic distribution systems. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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