Health-Based Risk Assessment of a Simple Landfilled Sludge Site

Abstract:

Based on the methods of health-based risk assessment of contaminated sites and the analysis of heavy metal pollution in a simple landfill sludge site, we assessed the integrated human health risk of soil contamination. It is concluded that the main pollutant is heavy metal. There are three exposure pathways identified: workers inside the site, residents working on the farmland and those living down of the site. This assessment indicates that workers would suffer non-carcinogenic impacts with total multi-pathways non-carcinogenic hazard index for heavy metal being 0.397,and the carcinogenic impacts being 2.2×10^-7. The residents working on the farmland would suffer non-carcinogenic impacts with total multi-pathways non-carcinogenic hazard index for heavy metal being 0.788, and the carcinogenic impacts being 4.5×10^-7. The residents living downslope of the site would suffer non-carcinogenic impacts with total multi-pathways non-carcinogenic hazard index for heavy metal being 6.22 for adults and 1.25 for children, and the carcinogenic impacts being 3.4×10^-6 for adult and 7.5×10^-7 for children. Non-carcinogenic index of the site and farmland areas are less than 1, while the non-carcinogenic health risk is negligible. Their carcinogenic index is less than 10^-6, and the cancer health risk is small. The adults living downslope of the site have a greater risk of non-carcinogenic and carcinogenic risk. The children have non-carcinogenic risk and dont have carcinogenic risk.

• Periodical: Applied Mechanics and Materials (Volume 392)
• Pages: 949-953
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.392.949
• Online since: September 2013
• Authors: Ling Yang, Chun Lei Zhang, Lei Li, A.K. Agadzi
• Keywords: Carcinogenic Risk, Health Risk Assessment, Non-Carcinogenic Risk, Sludge

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