The existence of water pollution control antimony Status and Progress - water, antimony pollution - water industries

The existence of water pollution control antimony Status and Progress - water

, antimony pollution - water industries

, The element symbol Sb, from its Latin name stibium, is the first periodic table main group, atomic number 51. Antimony is a gender rare, a total of four valence state (-3,0, +3, +5), the latter two Environment The main valence state. Antimony contamination in the environment from two parts: one, man-made pollution, this part of the waste of life, including antimony, dust caused by mining operations, waste water, waste, gas and coal used in power plant containing antimony fuel combustion. 2, natural pollution, which mainly refers to rich areas, such as antimony antimony mine, some hot springs and Terrestrial heat Zone because of its special geological conditions caused by the surrounding environment, the phenomenon of high levels of antimony. Nriagu and so that man-made pollution, natural pollution than the much more serious. By rock weathering, erosion and man-made emissions of rain and other factors, natural water bodies will eventually become most of the environmental fate of antimony. Antimony compounds in various forms, or to the suspended or dissolved present in the water environment. Some studies show that antimony on biological and human chronic toxicity and carcinogenicity. Antimony pollution can not be ignored. Antimony in the environment pollution and its distribution, toxicity has been reported in the literature abroad. This paper summarized the literature at home and abroad, based on a variety of antimony in water removal methods are reviewed, as antimony pollution control and research reference.

2, antimony toxicity and environmental standards

Antimony is not essential elements of organisms. Different valence states of antimony toxicity in the following order: 0 Price> +3 ( ) Price> +5 ( ) price> organic antimony. In which the toxicity of trivalent antimony pentavalent antimony than ten times. Based on the toxicity of antimony, some scholars are of antimony in the soil the maximum allowable concentration of 3.5-5mg/kg.

U.S. Environmental protection Council and the European Union in 1979 and 1976 will be listed as priority pollutants antimony, Japan Environmental Sanitation Department will also pay close attention to it as a pollutant. Developed countries in the world are on the antimony strict environmental standards. In Germany, the average daily absorption of antimony human capacity 23 gSb / d. The EU drinking water regulations the maximum allowable concentrations of antimony (maximumadmissibleconcentration) was 5 g / L. Japan provides to 2 g / L. U.S. Environmental Protection Agency to antimony in drinking water MCLG (maximumcontaminantlevelgoal) and MCL (maximumcontaminantlevel) values were set at 6 g / L. World Health Organization, based upon observed from rodent 0.43mg / (kg.d) pathogenic antimony content, content of antimony in drinking water should be less than 5 g / L. China is also on the environment limits accordingly the provisions of antimony. China's "Surface Water Environmental Quality Standard" (GB3838-2002) and "drinking water health standard" (Ministry of Health, 2001) in both the limit of antimony as 5 g / L. "Urban Water Supply Engineering Planning" (GB50282-98) provides water plant effluent Sb

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