Method for preparing Sb contaminated site efficient ecological remediation flora from biogas residues

[0014] Example 1:

[0015] (1) Mix the biogas residue with a solution containing a certain amount of carbon source, add a certain amount of sulfate, and put it into the reactor for biochemical reaction, and control the dry biogas residue content of the mixed solution to 0.5% and the solid content rate of 10%. The organic carbon content is 12%, and the mass ratio of organic carbon / sulfate is 5:1, and then react for 1 day;

[0016] (2) Add a certain amount of antimonate to the solution after step (1) to control the molar ratio of sulfate / antimonate (2-3):1, and the mass ratio of organic carbon / antimony (10- 30): 1, then react for 5 days;

[0017] (3) Repeat adding antimonate to the solution twice, each time controlling the molar ratio of sulfate / antimonate (2-3):1, the mass ratio of organic carbon / antimony (10-30):1, The reaction time is 5 days, and then an efficient ecological restoration flora is obtained.

[0018] Example 2:

[0019] (1) Mix the biogas residue with a solution containing a certain amount of carbon source, add a certain amount of sulfate, and put it into the reactor for biochemical reaction, control the dry biogas residue content of the mixed solution to 8-10%, and the solid content rate of 10- 15%, the organic carbon content is 10-15%, the mass ratio of organic carbon / sulfate is 20:1, and then react for 0.1-1 days;

[0020] (2) Add a certain amount of antimonate to the solution after step (1) to control the molar ratio of sulfate / antimonate (1-5):1, and the mass ratio of organic carbon / antimony (30- 80):1, followed by reaction for 0-1 days;

[0021] (3) Repeat adding antimonate to the solution once, controlling the molar ratio of sulfate / antimonate (1-5):1, the mass ratio of organic carbon / antimony (30-80):1, and the reaction time is 1 Days, and then obtain efficient ecological restoration flora.