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The thesis is divided into two parts . The upper half of the Chengde calcium bentonite directly modified , prepared by the excellent performance of the deep-processing products - sodium bentonite , silica and activated clay ; were discussed and the factors that affect product quality , to find the best process conditions. In addition , this section also for heavy metals in the waste water of Cr ( VI ) , Ni 2 < / sup > adsorption , and achieved good results ; same time, an analysis of factors affecting the removal rate . High Chengde bentonite sediment concentration , is typical of low-grade calcium bentonite , generally used only for the metallurgical industry , and did not conduct deep processing . In this study, broaden the scope of its application to improve its economic value . In the second part of the experiment , the paper used for the Lin'an sodium bentonite cationic surfactant modified explore the process conditions ; prepared organic bentonite for adsorption of phenol in the water , to discuss the mechanism of adsorption , organic bentonite in the environment widely used in the field of protection laid a theoretical foundation . Finally, a non-ionic surfactant - cover agent , sodium bentonite modified , open up a new field of organic bentonite prepared ; This study has not been in the country reports .
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