The present invention relates to the technical field of
coal chemical product treatment, and specifically discloses a method for treating coking
sulfur paste. The method for treating coking
sulfur paste comprises the following steps: adding water to the pretreated coking
sulfur paste to separate out water-soluble impurities; after
centrifugation, separating out impurities such as
coal powder according to density differences; performing
microwave-assisted
ethanol extraction to separate out benzenes and some polycyclic aromatic hydrocarbons; extracting with a second extractant, separating out
phenanthrenes, and further preparing high-purity sulfur. At the same time, the present invention also treats the waste liquid generated in the above method with a composite
microbial agent, effectively degrading
safety monitoring indicators such as
thiosulfates, thiocyanates, and polycyclic aromatic hydrocarbons (PAHs) in the waste liquid. The method for treating coking sulfur paste provided by the present invention has low
energy consumption, low cost, no
waste gas generation, and takes into account the
effective treatment of waste liquid, having good economic and environmental benefits. The present invention can be applied to fields such as the treatment of coking sulfur paste, the preparation of sulfur, and the treatment of
coking wastewater.