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Effect of exhaust gas from sintering machines on the concentration of dioxin in soil around a steel plant |
SUN Bo-fei1, BO Xin2, ZHANG Shang-xuan3, DIAO Xiao-jun2, KAN Hui4, CHENG Ji5, LIU Meng6, WU Peng-cheng7, ZHOU Tian2, HU Xiao-bo1 |
1. Hebei Zhengrun Environmental Technology Co., Ltd., Shijiazhuang 050000, China;
2. The Appraisal Center for Environment and Engineering, Ministry of Environmental Protection, Beijing 100012, China;
3. CISDI Chongqing Environmental Consulting CO., Ltd., Chongqing 400013, China;
4. Academy of Environmental Planning and Design, Nanjing University, Nanjing 210093, China;
5. Trinity Consultants China Office, Hangzhou 310012, China;
6. CSD Water Service Co., Ltd., Beijing 100192, China;
7. Capital University Of Economics And Business, Beijing 100070, China |
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Abstract In order to investigate the influence of dioxins emitted from iron-steel sintering machines on soil pollution, both monitored data by a steel plant in Hebei Province in 2016 and CALPUFF simulations are used to design a method to estimate the amount of sintering-emitted dioxins that is deposited in the surrounding soil. Results show that the toxicity equivalency quantity (TEQ) of dioxin in exhaust gas from the sintering machines of this steel plant is 0.017~0.025ng-TEQ/Nm3. The emission factor is 0.044~0.081ug-TEQ/t. The concentration of dioxins in three soil samples ranges from 0.82 to 2.4ng/kg, which is consistent with the simulated results by CALPUFF (1.46~3.44ng/kg).
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Received: 27 April 2017
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