Phenol high-efficiency degradation bacterial agent, and preparation and application thereof

The invention discloses an efficient phenol degrading bacterial agent, preparation and application thereof, and belongs to the technical field of biology, the main component of the microbial agent for treating phenol wastewater is Citrobacter freundii LBQ22-2, and the main component is identified as Citrobacter freundii through 16S rDNA (ribosomal deoxyribonucleic acid) sequence sequencing. The microbial agent is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation number is CGMCC NO.26094, the preservation number is CGMCC NO.26094, and the preservation number is CGMCC NO.26094; the preservation date is November 10, 2022. The phenol degrading bacterial agent disclosed by the invention can grow by taking phenol as a sole carbon source, 4000 mg/L of phenol can be degraded to 2 mg/L or below within 72 hours, and the removal rate reaches 99.5% or above. The bacterial preparation prepared by the invention is added into wastewater according to the mass ratio of 0.5-5 pe