초록

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Abstract ▼ AI-Helper

When the water quality standards were first defined, BOD and COD which are the standards for organic matters were selected as the major indexes for rivers and lakes. Therefore, the degree of BOD pollution has continuously improved due to BOD-based regulations against pollutants and concentrated inve...

When the water quality standards were first defined, BOD and COD which are the standards for organic matters were selected as the major indexes for rivers and lakes. Therefore, the degree of BOD pollution has continuously improved due to BOD-based regulations against pollutants and concentrated investments in basic environmental facilities. But, the degree of refractory organic matter is stagnant or increasing nationwide including major sources of tap water. The environmental standards for water quality and aquatic ecosystem are required for reflecting the water quality status and achieving the water quality in agreement with the purpose of water use. They must reflect the social, economic, and natural characteristics of the nation as much as possible. In order to achieve the goal for organic matters management in the future, we need to not only control refractory organic matters, but also manage indexes for the prevention and monitoring of water quality accidents, reinforcement of forecast functions, and the health of the aquatic ecosystem. It is needed to select indexes to reflect the environmental needs of the times such as the demand for management of aquatic ecosystem and risk management, integrated environmental management, and preventive management, as well as the changed environmental conditions such as climate change and Four Rivers Restoration Project. TOC is appropriate as the future index for management of organic matters in rivers and lakes.

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