The Screening of Strains Degradation Oil Wastewater and Studies on its Characteristics

Three oil degrading strains, named JZ3, JZ10 and JZ4 were screened out from an oil wastewater treatment plant. Their oil removal rates were 52.9%, 52.27%and 50.65%, respectively. The effect of temperature, pH, shaking speed, inoculation amount and culture time were studied. It was showed that the optimal temperatures of the JZ3, JZ4 and JZ10 were all 40°C; the optimal pH values were 7, 6, 5.5, respectively, the optimal shaking speeds were 110r/min, 130r/min, 110r/min, respectively, the optimal inoculation amounts were 3%, 3%, 2%, respectively, the optimal culture times were 6h, 21h, 22h, respectively.