Pollution of hazardous substances in industrial construction and demolition wastes and their multi-path risk within an abandoned pesticide manufacturing plant
Pollution of hazardous substances in industrial construction and demolition wastes and their multi-path risk within an abandoned pesticide manufacturing plant
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DOI：
10.1007/s11783-017-0901-2
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发表时间：
2017-01
影响因子：
6.4
通讯作者：
Sheng Huang;Xin Zhao;Yanqiu Sun;Jianli Ma;Xiaofeng Gao;Tian Xie;Dongsheng Xu;Yi Yu;
中科院分区：
文献类型：
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作者：
Sheng Huang;Xin Zhao;Yanqiu Sun;Jianli Ma;Xiaofeng Gao;Tian Xie;Dongsheng Xu;Yi Yu;
对某农药生产厂内受污染的工业建筑和拆除废物（ICDW）中重金属和有机污染物的勘探、其浸出能力以及健康和环境风险进行了调查。废液中cd的最高含量为90.8 mg•kg-1Cd，可能来源于磷岩和农药生产过程中使用的工业硫酸。同时检测到敌敌畏等11种有机磷农药的平均浓度为979.8 mg•kg - 1。冰乙酸-氢氧化钠和去离子水在实验室模拟的ICDW中获得了较高的浸出率，约为4.14‰。由于干砖的物理特性和辛醇-水分配系数不同，农药污染物在干砖上的滞留倾向最强（浸出率为1.68‰）。现场ICDW中农药的水迁移率与废弃物类型、工艺段和人类活动存在空间相关性，其淋溶率通量在5.9‰~ 27.4%之间。采用基于风险的纠正措施（RBCA）模型对随机散落的ICDW垃圾污染风险进行了模拟。当地工人口服和皮肤摄入量分别为9.8 × 10 - 3和1.9 × 10-2mg•（kg•d） -1。对水生系统的潜在浸出风险超过了近75%的废物的限值。大多数ICDW的环境和健康风险超标，而污染最严重的砖废物的风险值超过临界水平660倍。还提供了涉及建筑和解构工作、废物转移和法规供应的废物管理的影响。
Exploration of heavy metals and organic pollutants, their leaching capacity along with health and environmental risks in contaminated industrial construction and demolition waste (ICDW) within a pesticide manufacturing plant were investigated. A maximum content of 90.8 mg•kg–1Cd was found present in the wastes, which might originate from phosphorus rocks and industrial sulfuric acid used in pesticide production processes. An average concentration of 979.8 mg•kg–1dichlorovos and other 11 organophosphorus pesticide were also detected. Relatively high leaching rates of around 4.14‰were obtained from laboratory simulated ICDW using both glacial acetic acid-sodium hydroxide and deionized water. Pesticide pollutants had the strongest tendency to retaining on dry bricks (leaching rate 1.68‰) compared to mortar-coatings, etc. due to their different physical characteristics and octanol-water partioning coefficient. Mobility of pesticide from on-site ICDW by water was spatially correlated to waste types, process sections and human activities, with a flux of leaching rate between 5.9‰ to 27.4%. Risk-based corrective action (RBCA) model was used to simulate the risk of contaminated ICDW debris randomly scattered. Oral and dermal ingestion amount by local workers was 9.8 × 10–3and 1.9 × 10–2mg•(kg•d)–1, respectively. Potential leaching risk to aquatic systems exceeded the limit for nearly 75% waste. Environmental and health risk exceedance was found in most ICDW, while the risk value of the most severely contaminated brick waste was 660 times beyond critical level. Implications for waste management involving construction and deconstruction work, waste transferring and regulation supplying were also provided.