In cities sewage needs to be carried to processing unit and acted upon by microbial process. Microbes which can decompose any compound as well as destroy the pathogens of cholera , typhoid are mixed with sewage . They release methane and carbondioxide by decomposition of the carbon compounds present in sewage. Phenoi oxidising bacteria decompose the xenobiotic chemicals present in sewage.
What is the role of Phenol Oxidising bacteria ?

Explanation

Phenol oxidising bacteria decompose the Xenobiotic chemicals present in sewage.