Objective: the chrome pollution from soil were high Cr (Ⅵ separation sulfate-reducing bacteria) to repair chrome pollution of soil.
Methods: using microorganism separation, purification technology from Cr (Ⅵ) contaminated soils were native chromium reduction fungi, Domestication and cultivation expand sulfate-reducing bacteria, By single factor experiment on chrome pollution repair soil sample, Use diphenyl carbon acyl 2 hydrazine spectrophotometry in the soil sample hexavalent chromium reductive circumstance, The reduction in soil samples analyzed form chromium.
Results show that the selected two Cr (Ⅵ), a reduction of fungi QingMeiJun Penicillium (for), a hairy mould Mucor (.). In the single factor experiment, 32 degrees, the best reduction reduction rate reached 67.74%; Sulfate-reducing bacteria by 3% reasonable dosage and its reduction rate for 62.37%, When the pH value for the best effect, while 5.2 hexavalent chromium reduction rate reached 69.89%, With more than 3 fungi, bacteria for the best effect, reduction rate reduction for 66.67%, The original sulfate-reducing bacteria with soil water drop the normal cr 68.09%, The soil can exchange the original configuration chromium dropped 66.67%, And crystallization precipitation state and amorphous precipitation state chromium chrome content decreased 30.77%, 25%.