| Fluoride is toxic and harmful substances, toxicity to plants by10-100times more sulfur dioxide, and human and livestock has the obvious hazards. Fluoride pollution from the source of pollution into the atmosphere, the dry and wet deposition effects in the environment (plants, soil, water and etc.), through food and water to enter the human body and the victim..Baotou is a heavy industrial city, with the rapid development of economy, the industrial production to the environment pollution, in the early eighty’s, due to Baotou mainly in the metallurgical industry, Baotou iron and steel (Group) company, Baotou Aluminum Corporation as a fluoride excretion in large family, the cause of fluoride pollution to our city farming animal husbandry caused huge economic losses, at the end of the ninety’s, with Baotou Xiwang aluminum fluoride pollution situation is grim, is not optimistic.Due to the current Baotou Aluminum Corporation and Baotou Xiwang Aluminum only two companies, so the research is mainly in Baotou Aluminum Corporation and its surrounding areas as the main object, Through the survey of pollution sources and the monitoring, to find a scientific and accurate for the electrolysis workshop roof of unorganized emission fluoride on-site sampling and monitoring method, giving accurate aluminum stock fluoride emissions, combined with the local wind, atmospheric stability, meteorological condition, study of fluoride emission and diffusion rule, discuss its emissions and environmental quality relationship, to the factory ambient air quality impact prediction, and according to the environmental quality requirements, identifies the source emissions targets, in order to prevent the surrounding environment and human health suffered pollution put forward scientific and reasonable reduction countermeasures.The study to obtain the following conclusions:(1) through to the aluminum electrolysis workshop production technology shares the serious investigation and study, combined with the current domestic and international monitoring instrument development level, find a can provide electrolytic workshop roof fugitive emission of fluoride sampling method.(2) Baotou Aluminum Corporation is the result of its surrounding high level fluoride content of main pollution sources.(3) Coated stock skylight fugitive emission is larger, the fluorine content of total fluorine discharge volume80%the left and right sides, leading to a short distance therefrom heat and power plant, gas station and other static point fluoride levels exceed the standard seriously.(4) The research using the point source model and surface source model for Baotou Aluminum Corporation in various emission conditions surrounding air fluoride pollution on plant is forecasted. The prediction results show that, the impact of non-point source pollution is far higher than that of point source, fluoride long-term concentration forecast result and static monitoring of the actual monitoring results.(5) Studies have shown, continue to increase for the aluminum company of environmental protection supervision, promote Baotou Aluminum Corporation through strict internal management system, improve the staffs personal quality and the level of production technology and other measures, especially large reductions in roof without tissue fluorine discharge volume, its surrounding environment quality and fluorine discharge gross to achieve local and national the corresponding standard is completely possible.(6) Although the Baotou Aluminum Corporation surrounding fluoride concentrations do not constitute a threat to human health, but attention should be paid to prevent accident condition may exist on human and environmental hazard potential risks. |
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