Method for solidifying heavy metal of coal gangue by using microorganism

• Main Authors: LI, Junmeng, ZHANG, Jixiong, GUO, Yachao, ZAYZAY, Samuel·Jr, RUAN, Zeyu, GAO, Huadong, LI, Wei, MA, Kun, DONG, Jihong, HAN, Zhen, HUANG, Yanli, ZHAI, Wen
• Format: Patent
• Language: English
• Published: 26.08.2021
• Subjects: CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS; CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS; DISPOSAL OF SOLID WASTE; FIRE-FIGHTING; HUMAN NECESSITIES; LIFE-SAVING; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING

A method for solidifying a heavy metal of coal gangue by using a microorganism, comprising: measuring the heavy metal ion content of gangue to be filled, selecting a strain according to the measurement result, and formulating an inoculant; arranging inoculant injecting pipes in a goaf; during filling, spraying the inoculant on gangue by means of a nozzle so as to perform solidification treatment; and after filling is completed, spraying the inoculant to a water accumulation place by means of an inoculant injecting pipeline to achieve secondary solidification. By means of the method for solidifying the heavy metal of coal gangue by using the microorganism of the present invention, the present invention performs microorganism attachment treatment before the filling of gangue, can directly solidify the heavy metal of gangue in the goaf, and after the filling is completed and when there is water in the goaf, can also use an inoculant injecting net to complement the inoculant, thereby achieving secondary solidification, reducing the migration pollution of the heavy metal ions, having a good solidification effect and little pollution, and is easy to implement and popularize.