| abstract |
A method for solidifying heavy metals in coal gangue with microorganisms, comprising: measuring the content of heavy metal ions in the gangue to be filled, selecting bacterial species according to the measured results, and preparing a bacterial agent; arranging a bacterial injection pipe in a goaf; The gangue is sprayed with bacterial agent for curing treatment; after filling is completed, bacteria are sprayed on the stagnant water through the bacteria injection pipeline to achieve secondary curing. According to the method for solidifying the heavy metals of coal gangue by microorganisms, the microorganism attachment treatment is carried out before filling the gangue, which can directly solidify the heavy metals in the goaf; Injecting the bacteria net to supplement the bacteria agent, realizes secondary curing, reduces the migration pollution of heavy metal ions, has good curing effect, low pollution, and is easy to implement and popularize. |