Abstract
Membrane bioreactor is used for wastewater containing phenol treatment, and it also discusses the mixed aerobic granular dosing influence sludge characteristic of membrane bioreactor container. The results showed that the mixed aerobic granular sludge in the membrane bioreactor can effectively improve the sludge properties. It also improves the treatment effect. sedimentation performance is improved by using flocculent sludge to gradually increase additive amount of aerobic granular sludge, which was 100%. And the hydrophobic is better by SVI from 135.85 to 29.36 mL/g, Zeta potential from 20.302 rise to 4.325 mV. It leads the COD, NH3-N degradation in the waste water is improved. The Removal Rate of COD, NH3-N, NO3-N from 87.3%, 83.2% and 87.3% rise to 99.2%, 94.9% and 99.2%. At the same time, it also compares the various changes trend and changes of the membrane surface in different condition, it shows that different inhibitory effects membrane pollution, and membrane pollution membrane is reduced and flux recovery rate is rise in sludge with dosing condition.
