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Estimation of the heavy metal pollution for the soils and different environmental objects within the solid domestic waste landfills

机译:固体垃圾填埋场土壤和不同环境物品的重金属污染估算

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The comprehensive geoecological study of the area closed to the north-western Landfill No5 for the municipal solid waste disposal shows the ecologically negative impact on the environment. It is determined that the existing soils are affected by the significant geochemical transformation. They are characterized by the considerable accumulations of the heavy metals (HMs). In comparison with the conventional pure soils the soil contents of Cu, Zn, Ni, Cr and Pb are 8, 12, 3, 2, 17 times more, respectively. As a result of soil pollution by HMs the number of mobile forms of these metals is increased: for Zn - 4, Ni - 5, Cu - 6, Pb - 8 times. The anomalous high HMs pollution for the bottom deposits is identified: for Zn - in 800 mg/kg that is 14 times more than maximum allowable concentrations (MAC); for Cu - 150 mg/kg that is 4. 5 times more than MAC. Average Pb content there exceeds its MAC and is equal to 72 mg/kg. Therefore, the bottom deposits have the hazardous level of pollution. It is shown that the elements of considerable accumulations in grass vegetation are Cu, Cr and Ni at the biological absorption coefficient more 2. 0. The physical and chemical studies of surface waters show that the contents of microelements (F, Cr, Ni, Cu, Fetot. and Pb) there don't exceed the MAC, but they are higher than the background values. The comparison of the average chemical composition for the ground water samples from the wells of the Landfill area and the regulatory standards indicates that the standard general sanitary criteria for pollution level of these waters belong to the middle and high levels with the considerable exceeds of the MACs for Fe and Ni.
机译:该地区综合地理学学研究封闭于西北部垃圾填埋场NO5,为市政固体废物处理表明,对环境的生态负面影响。确定现有的土壤受到显着的地球化学转化的影响。它们的特点是重金属(HMS)的相当大的累积。与传统的纯土壤相比,Cu,Zn,Ni,Cr和Pb的土壤含量分别为8,12,3,2,17倍。由于HMS土壤污染,这些金属的移动形式的数量增加:对于Zn - 4,Ni - 5,Cu - 6,PB - 8次。鉴定了底部沉积物的异常高HMS污染:对于Zn - 在800mg / kg中,比最大允许浓度(Mac)多为14倍;对于Cu - 150 mg / kg,这是mac的5倍。平均PB内容超过其Mac,等于72 mg / kg。因此,底部沉积物具有危害污染水平。结果表明,在生物吸收系数的情况下,草植被中相当累积的元素是Cu,Cr和Ni。表面水域的物理和化学研究表明,微量元素含量(F,Cr,Ni,Cu ,灌注。和pb)不超过Mac,但它们高于背景值。从垃圾填埋场井下的地下水样品的平均化学成分的比较和监管标准表明,这些水域的污染水平的标准一般卫生标准属于中高水平,相当于大量的MAC fe和ni。

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