Identification of hazardous events for drinking water production process using managed aquifer recharge in the Nakdong river delta, Korea

Sang Il Lee, Hyon Wook Ji

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Various hazardous events can cause chemical, microbial or physical hazards to a water supply system. The World Health Organization (WHO) and some countries have introduced the hazardous event analysis for identifying potential events which may be harmful to the safety of drinking water. This study extends the application of the hazardous event analysis into drinking water production using managed aquifer recharge (MAR). MAR is a way of using an aquifer to secure water resources by storing freshwater for future use and pumping it whenever necessary. The entire drinking water production process is subjected to the analysis from the catchment area to the consumer. Hazardous event analysis incorporates site-specific data as well as common issues occurring in the process of drinking water production. The hazardous events are classified based on chemical, microbial or physical characteristics. Likelihood and severity values are assigned, resulting in quantitative risk by multiplying them. The study site is located at a coastal area in the delta of the Nakdong River, South Korea. The site has suffered from salt water intrusion and surface water pollution from the water upstream. Nine major hazardous events were identified out of total 114 events from 10 drinking water production processes. These major hazardous events will provide useful information on what to be done to secure the water quality produced by a new water supply method.

Original languageEnglish
Pages (from-to)365-372
Number of pages8
JournalMalaysian Journal of Analytical Sciences
Volume20
Issue number2
DOIs
StatePublished - 2016

Keywords

  • Coastal area
  • Drinking water
  • Hazardous event analysis
  • Managed aquifer recharge

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