Seyed Kazem Mousavi - Department of Environmental Management, Science and Research Branch, Islamic Azad University, Tehran, Iran
Akhtar Mousavi - Faculty of Architecture & Arts, University of Kashan, Kashan, Iran

Process modeling is used in order to analyze the distribution of contaminants in the environment or the destruction of the environment. In this regard, one of the most suitable models in line with the used process in predicting the effects and the environmental risk assessment of iron and steel industries, is the chemical screening tool for exposures and environmental releases (ChemSTEER) as a screening tool relative to the human contanctand distribution of contaminants corresponding to the resources of the host environment.ChemSTEER is a computer-based software program developed by the US Environmental Protection Agency (EPA), Office of Pollution Prevention and Toxics (OPPT), that can be used to conduct a screening-level workplace exposure and release assessment. This article introduces the brevity of this model and its application in the emission of the contaminants. According to the results, it can be concluded that working conditions in the mentioned factory in terms of risky contacts due to processing procedures and sponge iron production method, has an acceptable condition in a long term operation range of the industry.

Modeling, Iron and steel industry, Direct reduction unit, Environment, Pollutants