EXPERIMENTAL STUDY ON MODIFYING OF Ca BENTONIC AS ENVIRONMENTAL PURIFICATION MATERIAL WITH SODIUM COMPAUNDS AND EFFECT IN TREATING PRINTING AND DYEING WASTEWATER

The main factors affecting the quality of modifying of Ca bentonite were discussed.The main technical conditions for modifying of natural Ca bentonite with sodium carbonate or sodium compounds were detemined Moreover,the effect of natural Ca bentonite and artificial Na bentonite in reating printing and dyeing wastewater were also discussed.