South To North Water Transfer Jiaozuo Typical Contaminants Migration Characteristics Of Groundwater Systems

The south-to-north water diversion project is to solve the shortage ofwater resources in north serious o extreme infrastructure projects, the middleroute project in Beijing, Tianjin, north China plain region, to improve theshortage of water resources and water environment in immeasurable role. Thispaper focused on the research of engineering in line to total flows Jiaozuotypical of shallow groundwater system transfer mechanism and predictionpollutants.Structure characteristics, collection, analysis water, sure, survey ofpollution sources and dynamic monitoring, through the groundwatercontamination in distribution system, and analyzes the mechanism ofmigration, then on this basis through the established mathematical model, theapplication of related software simulation research in typical pollutantsmigration rule and the ten years of migration prediction. So as to determine thepollutants to study of south-to-north water transfer project the effect of totalflows, for the project to provide data to support and theoretical basis.The study area industrial and mining enterprises sewage discharges, andfarmland irrigation water is the main source of groundwater systempollutants.The present study area more than limits of indicators are chloride,sulfate, nitric acid nitrogen, chromium (Ⅵ), ammonia nitrogen, nickel, sodium,nitrogen and total hardness based, solubility always solid, including nitratenitrogen, sulfate, total hardness and dissolved solids in total amount on nearby assessment is more than the limit, the pollutant in shallow groundwater willalways the main water quality of water to produce certain effect. This articlethrough to research in chrome (Ⅵ) pollutants, three nitrogen pollutants and saltin the pollution chloride, total hardness, solubility always solid three typicalpollutants concentration distribution isoclines map for analysis, that its transfermechanism. Distribution of pollutant mainly in Dajiaozuo, Liujiazuo andpay-north and village area, pollutant migration patterns are affected by soilproperties, general groundwater depth, climate change, human activities,pollutants characteristics factors.Get in typical pollutants distribution and concentration of isoclines mapfoundation, this paper establish the research area migration of water, waterpollutants mathematical model, use Visual MODFLOW software to simulatethe pollutants in the area of the migration rule and the future transferring data:1, The structure and the function of the flow field, chromium (Ⅵ) transferto the flow direction of the basic direction, all is from the north to the south,chromium (Ⅵ) concentration gradually reduced. Chromium (Ⅵ) in thehydraulic field under the function of direction along the runoff migration, isalso associated with the spread of the trend to both sides, and the concentrationdistribution as the middle high low on both sides.2, Nitrate pollutants transfer with the direction of the groundwater flowdirection, from the north to the south east gradually reduce the concentrationof partial, and underground water flow field and by dynamic field effect, to spread around, vertical direction nitrate pollutant concentration over time alsothe steady increase. Because research in agricultural production activities willnot be terminated, although different season frequent activity degree isdifferent, but irrigation and fertilizer wastewater quantity will not be reduced,the pollutants to accumulate, continued through the pollution in thegroundwater way into, the pollution of groundwater resources3, Chloride, total hardness migration direction and current basic levelconsistent, all is from north to south, in the northeast of partial to the position.Parts of the pollutants transfer by topography influence, the simulation to thelast time is, polluted areas significantly increased, the same position5yearswas associated with nearly2times. Pollutant migration to discharge areaposition, concentration rise again. The vertical direction by water, water powerand influence field, and the upper pollutant concentration of a lower level islow. Because of its viscous soil after the permeability coefficient is not high,infiltration rate, low density, but in the cohesive soil of gravel layer underextremely good permeability, pollutants vertical migration effect is obvious.