Organic pollutant loading and biodegradability of firefighting foam

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Zhang, Xian-Zhong^1 ; Bao, Zhi-Ming^1 ; Hu, Cheng^1 ; Li-Shuai, Jing^1 ; Chen, Yang^1

Tianjin Fire Research Institute, Ministry of Public Security, Tianjin, China^1

关键词: Biodegradation rate;    Class a foams;    Extinguishing agent;    Firefighting foams;    Foam solution;    Long-term impacts;    Organic loadings;    Synthetic foams;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012137/pdf
DOI  :  10.1088/1755-1315/94/1/012137

来源: IOP

【 摘 要 】

Firefighting foam has been widely used as the high-performance extinguishing agent in extinguishing the liquid poor fire. It was concerned for its environmental impacts due to its massive usage. In this study, the organic loading level and the biodegradability of 18 firefighting foams commonly used in China were evaluated and compared. The COD and TOC of firefighting foam concentrates are extremely high. Furthermore, those of foam solutions are also much higher than regular wastewater. The COD/TOC ratio of synthetic foams are higher than protein foams. The 28-day biodegradation rates of 18 firefighting foams are all over 60%, indicating that they are all ready biodegradable. Protein foams (P, FP and FFFP) have the higher organic loading and lower 28-day biodegradation rates compared to the synthetic foams (Class A foam, AFFF and S). The short and long-term impact of protein foams on the environment are larger than synthetic foams.