Law Of Soil Leaching Ore Southern Ionic Rare Earth Nitrides Situ Leaching

Water is one of the most important natural resourses.It’s universal existence that the nitrogenpollution in water all around the world, but eutrophication is more widespread in the recent years.The lon state of NH+4、NO-3has been the hot issuses when the environmental experts both athome and abroad study and control the nitrogen pollution. And the leaching of nitrogen in wateris one of the main reason of the nitrogen pollution.Jiangxi is one of the main producing areas ofrare earth in our country,and it’s called”the Kingdom of Rare Earth”.but the ammonium salt is themain agentia in the process of mining the rare earth,especially in the recent years, the abuses ofmining excessive digging of rare earth are repeated and repeated.It leads to the nitrogen contentsin the soil much higher in Jiangxi, and then the water pollution is much more serious.According to the geological features of Jiangxi region, soil, groundwater pollution conditionand the factors influenced the nitrogen transfer,the rare earth in LongNa area as the researchobject, combining the field investigation and laboratory as the experimental scheme. Afterconsulting the relevant materials, this article will investgate the nitrogen pollution situation andthe nitrogen transform rule in Jiangxi Region.The field investigation showed that the water pollution in Jiangxi is very serious. The reasonwhy the concentration of ammonium and nitrogen is about100%is the in-situ leaching miningmother liquor collecting system is not perfect. After the profile analysis of the waste of rare earthfor one year, we know that it’s lack of organic matters,the soil is acidic,the content of nitratenitrogen and ammonium nitrogen is low,the total nitrogen content is higher, and the nearbysurface is eutrophication.The laboratory simulation experiments show that the ammonium nitrogen and total nitrogenhas obvious downtrend with the passage of time. And also there’s a phenomena in deep earth thatit first increase and then drops. In the soil there appears the NO3-leaching phenomena and itaccumulates slightly in the soil deep. With the increase of the water leaching,the nitrogenleaching in the soil speed up to soil lower migration.Planting the vagetation can effectivelyinhibit nitrogen leaching.This study showed the equation between total nitrogen leaching amountand precipitation amount. This study showed that the relationship between vegetation plantingsystem under the rare earth soil depth of the residual amount of nitride and leaching duration...