Pollution of hazardous substances in industrial construction and demolition wastes and their multi-path risk within an abandoned pesticide manufacturing plant

• Published in: Frontiers of environmental science & engineering Vol. 11; no. 1; pp. 123 - 135
• Main Authors: Huang, Sheng, Zhao, Xin, Sun, Yanqiu, Ma, Jianli, Gao, Xiaofeng, Xie, Tian, Xu, Dongsheng, Yu, Yi, Zhao, Youcai
• Format: Journal Article
• Language: English
• Published: Beijing Higher Education Press 01-02-2017; Springer Nature B.V
• Subjects: Acetic acid; Aquatic environment; Bricks; Cadmium; Construction industry wastes; Contamination; Deionization; Demolition; Earth and Environmental Science; Environment; Environmental risk; Hazardous materials; Health risks; Heavy metals; Industrial demolition wastes; Industrial pollution; Ingestion; Leaching; Leaching characteristics; Manufacturing; Manufacturing industry; Octanol; Organophosphorus pesticides; Pesticides; Physical characteristics; Physical properties; Pollutants; Research Article; Risk assessment; Sodium hydroxide; Sulfuric acid; Waste disposal; Waste management; Wastes; Water pollution; 多路径; 工业硫酸; 建筑废弃物; 有害物质; 有机污染物; 有机磷农药; 正辛醇-水分配系数; 环境风险; Waste management; Leaching characteristics; Industrial demolition wastes; Risk assessment; Heavy metals; Pesticides
• ISSN: 2095-2201; 2095-221X
• DOI: 10.1007/s11783-017-0901-2

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-1 Cd 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-1 dichlorovos 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 acidsodium hydroxide and deionized water. Pesticide pollutants had the strongest tendency to retaining on dry bricks （leaching rate 1.68 9‰） 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 demlal ingestion amount by local workers was 9.8 × 10-3 and 1.9 × 10-2 mg.（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.