The heavy metals migration from industrial wastes in soils

来源 :第四届城市、工业、交通和矿山土壤国际会议(The 4th International Conference on Sol | 被引量 : 0次 | 上传用户:lyh041899999
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Heavy metals (HM) migration from the industrial wastes into grey forest and turft-padsol soils has been under research.Heavy metals technogenic migration in the "wastes-soil" system represents unstable,dynamic process.Heavy metals technogenic dispersion flow with the rigid special connection with its source solid industrial wastes is formed in the soil section (profile) and the observed technogenic HM anomaly is characterized by the dynamic,instable parameters ofpolymetal pollution.HM redistribution in the soil profile is of the clearly impulsive character.HM migration fraught with the salt solutions and slightly soluble hydroxides is stated to be of the similar character in the acid oxidized medium.The three principle stages of technogenic HM transformation in "wastes-soil" system are 1) HM leaching; 2) transformation connected with HM deponing and ion-exchange by the soil substance; 3) conversion caused by HM transportation in the filtration flow.Heavy metals technogenic transformation peculiarities in "wastes-soil" system is defined by 1) complex formation; 2) HM highly intensive migration; 3) high humus horizon intrusion.Zink,lead,copper and nickel are claimed to possess the highest migration intrusion in the acid oxidized medium.The following HM succession from wastes is fixed:Pb > Cu ≥ Zn ≥ Ni > Mn > Cr ≥ Fe > Co.The greatest contribution into the polymetal soil pollution is made by the elements possessing the highest relative atom mass and various migration types.The main factor causing HM leaching is the medium reaction:in acid and slightly acid medium industrial wastes is able to create impact,collision technogenic load on the polymetal soil type.Under the polymetal pollution conditions heavy metals solution and migration capacity is higher than of separate HM compounds that is typical of lead.Soil horizon polymetal pollution expands the upper half-meter soil level threatening the ground waters pollution.Consequently humus accumulative horizon assessment as HM natural barrier must be based not only an contain soils sorption properties concerning toxicants but heavy metals migration processes under the polymetal pollution conditions according to the stated migration successions should be also taken into account.
其他文献
Present study was conducted to investigate spoil characteristics under 5-yr old high-density plantations of three native trees (Albizia lebbeck A.procera and Tectona grandis) and one fast growing wood
18 kinds of poly chlorinated biphenyls congeners (PCBs) in soil samples under different agricultural land-use types (LUTs) from Taicang County in southern Jiangsu province were analyzed.Soil samples w
Coal is the major energy resource in china and accounts for 74% of the primary energy constitution.Coal mining leads to land damage,water loss and soil erosion,and it is the main cause for the increas
The concentration of aluminum (A1) and fluorine (F) in tea plant and its implication on human health have been a topic of concern,since tea is an Al and F accumulator,and may contain Al and F high con
In order to discuss the environmental geochemistry of urban soil,7 soil profiles,355 topsoil (0-30cm) samples and 38 deep soil (150-180cm) samples were collected in Changchun city,a young city with a
Detailed magnetic measurements were performed on urban soils with two different types (waterloggogenic paddy soil and grey fluvo-aquic soil)nearby the Wuhan Iron and Steel Corporation (WISC),China.Res
Magnetic properties of atmospheric pollutants collected by both nature and artificial dust receptors are increasingly used as proxy parameters for environmental analysis.To investigate whether annual
Soil of cemeteries occur in practically all settlements,apart of very small ones,where there is no church.Process of burial influence the soils heavily because disturbing of sequence of horizons and m
The hollow villages phenomenon is a social problem that should arouse the concern of the governments at various levels as well as the whole society.It is also a new contradiction which we must envisag