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[Integrated Three-steps Method for Identifying Priority Pollutants in Reclaimed Water]
Fei-Peng Wang1,2, Shuang Peng1,2, Yuan Gui1,2
1State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Huan Jing Ke Xue= Huanjing Kexue
|December 4, 2024
Summary
Trace organic contaminants (TrOCs) in reclaimed water pose risks. An integrated EHL method identifies priority pollutants like formaldehyde and DEHP, aiding water safety management.
Area of Science:
- Environmental Chemistry
- Water Quality Management
- Risk Assessment
Context:
- Reclaimed water reuse is increasing globally.
- Trace organic contaminants (TrOCs) in reclaimed water present ecological and health risks.
- Current water quality standards lack specific limits for many TrOCs.
Purpose:
- To propose an integrated Exposure-Hazard-Prioritization (EHL) method for identifying priority TrOCs in reclaimed water.
- To establish a systematic approach for risk assessment and management of TrOCs in water reuse.
- To develop a framework for prioritizing pollutants based on exposure and hazard data.
Summary:
- A meta-analysis established an Exposure (E) database of TrOCs in reclaimed water.
- A consensus mechanism identified a Hazard (H) dataset of concerning TrOCs.
- Risk quotients calculated a final Prioritization (L) list, recommending six key TrOCs for Chinese reclaimed water management.
Impact:
- The EHL method effectively identifies priority pollutants in reclaimed water.
- Provides an executive list of six high-risk TrOCs (formaldehyde, DEHP, 17β-estradiol, erythromycin, sulfamethoxazole, ibuprofen).
- Crucial for enhancing water quality safety evaluation and management in reclaimed water and other environments.
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