Method for preparing organic bentonite by using calcium-based bentonite original soil in efficient and environment-friendly manner

The invention relates to a method for preparing organic bentonite by using calcium-based bentonite original soil in an efficient and environment-friendly manner. The method comprises the following steps: (1), preparing organic bentonite; and (2), carrying out solid slag treatment and waste liquid recovery. The method is simple to operate, and sodium modification, organic modification and purification are integrally completed; and the used solvent and water are recycled, and the generated solid slag can be used as a filler of a building material or a polymer composite material, thereby satisfying the demands of green chemical industry. 一种利用钙基膨润土原土高效环保制备有机膨润土的方法，包括以下步骤：（1）有机膨润土的制备；（2）固渣处理与废液回收。本发明操作简单，钠化、有机改性与提纯一体化完成；所用溶剂与水均回收重复利用，产生的固渣可用作建筑材料或高分子复合材料的填料，符合绿色化工的要求。