Study on the technical system of life cycle risk management for mercury-contaminated site s
ZHAO Bin1,2, HOU De-yi1, ZHANG Hao3, WANG Liu-wei1, ZONG Wen-jing1
1. School of Environment, Tsinghua University, Beijing 100084, China; 2. Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China; 3. Technical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing 100012, China
Abstract：With the continuous development of global society and economy, environmental mercury (Hg) pollution had increasingly attracted more and more attention due to severely negative impact on both public health and the ecological safety. Life-cycle risk management acted as an important approach to effectively promote the risk management effect of mercury-contaminated sites. In order to effectively improve the capacity of risk prevention and control of mercury contaminated sites, the comprehensive technical system for risk management of Hg contamination was established under the background of the Minamata Convention on Mercury, a global treaty on ecosystem and human health protection. The characteristics of health risk presented in contaminated sites were studied and a life-cycle management system was designed based on the existing technologies and application experiences at home and abroad. Relying on this system, the life-cycle risk management was accomplished through the application of enhancing engineering remediation, risk control, institutional control, etc., which aimed to decrease the negative health effects and ecological damages associated with Hg exposure. The site risks levels were divided into 3stages based on exposure scenarios from site survey and contamination levels evaluated according to risk screening standards. The measures of risk prevention, process control and long-term management were implemented in the stages of risk generation, risk development and risk elimination, respectively. The main features of this system are summarized as follows: 1) The risk-based management decision reflects the scientific connotation of the contaminated site management; 2) Cost is saved through classified risk management, towards to the maximum net benefit from site management; 3) The whole process risk control is realized with the concept of life cycle management.
赵彬, 侯德义, 张昊, 王刘炜, 宗汶静. 汞污染地块风险全生命周期管控技术体系研究[J]. 中国环境科学, 2022, 42(5): 2423-2432.
ZHAO Bin, HOU De-yi, ZHANG Hao, WANG Liu-wei, ZONG Wen-jing. Study on the technical system of life cycle risk management for mercury-contaminated site s. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(5): 2423-2432.
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