摘要：This paper is aimed to solve the effect of pH value in denitrification and phosphorus removal process,and to determine the best pH value for the treatment. pH value was an important indicator of activatedsludge reaction in the water treatment process, and it was necessary to keep the suitable pH value toobtain a good treatment effect. The influence of anaerobic phosphorus release and anoxic phosphorusabsorption under pH = 6.0, pH = 7.0 and pH = 8.0 in sequencing batch reactor was studied in this paper.The experiment results showed that, in anaerobic phase, anaerobic phosphorus release increased withthe increase of pH value, and no significant change was observed in HRT for anaerobic. In anoxiaphase, when pH = 6.0, the activity of denitrifying phosphorus removal bacteria was significantly inhibitedand phosphorus absorption was poor. When pH = 7.0 and 8.0, the anoxic phosphorus uptake anddenitrification system worked well. In the late stages of anoxic phase pH>8.0, the release and absorptionof phosphorus was also very stable.
