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The Newly Discovered Analcitite in Cretaceous System in the Ordos Basin and Its Treatment for Sulfate-bearing Water

CHEN Fang-ming~1,LI Zhao-hua~1,LU Qi~2 1.School of Resources and Environment,Hubei University,Wuhan 430062,China; 2.Center for Nano-meter Technology,China University of Geosciences, Wuhan 430074,China  
Analcite minerals have been firstly discovered in drill cores of Cretaceous sedimentary rocks in the Ordos basin by using micro-analysis. Analcitite has been purified and modified first and then has been used to treat the local sulfate-bearing water with obvious good effective.To treat 100mL solution with sulfate concentration of 1000mol/L,the good technological condition is listed below.It needs 2.0 g of modified analcitite powder with grain size of less than 100 mesh,takes 60 min of stirring.The sulfate content in the water, which was treated once time by using modified analcite,is decreased from its initial sulfate content of 1000mol/L to less than the country standard value of normal water.After several times of treatment on the water containing over 1000mol/L by using the modified analcite,the sulfate content in water also can be decreased to less than that of country standard.This is a new and effective method for improving the quality of groundwater in the Ordos basin.
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