不同温度下反硝化除磷工艺ORP变化规律研究

Study about ORP variation of denitrifying phosphorus removal process on different temperature

采用SBR反应器分别研究了低温(15℃和13℃)与常温(25℃)条件下反硝化除磷工艺ORP变化规律。研究结果表明:混合液ORP在厌氧、缺氧及好氧阶段的变化与温度有关,但厌氧阶段水力停留时间在2h以上时,初始厌氧程度对DPB的厌氧释磷过程基本无影响。

ORP variation of denitrifying phosphorus removal process were respectively studied on on low temperature （15℃ and 13℃） and normal（25℃）. Results indicated that the ORP of anaerobic, anoxic and aerobic phase in the mixture liquid was related to temperature. Phosphate release of DPB could not be affected by the ORP in the end of anaerobic phase, when the HRT was more than 2 hours in anaerobic phase. The anaerobic time could be confirmed by the decline velocity of ORP in low temperature.