For more than a century, biological wastewater treat-
ment has been used to minimize anthropogenic damage
to the environment. Oil and Grease (O&G) are the major
problems and contaminants in biological wastewater
treatment processes. Because of their nature, O&G form
a layer on the water surface and decrease the oxygen
transfer rate into an aerobicprocess [1]. These contami-
nants are mainly discharged from restaurants, food in-
dustries, and households [1,2]. Proteins and polysaccha-
rides must also be hydrolyzed to smaller units by ex-
tracellular enzymes in a municipal wastewater treatment
plant