废水脱氮中好氧反硝化现象的研究

采用SBR工艺,对废水脱氮中的好氧反硝化现象进行了研究。试验工序为:缺氧搅拌3h、曝气8h、缺氧搅拌1.5h、沉淀1h、排水。当进水ρ(NH4+-N)为107mg/L,ρ(CODCr)为700mg/L时,好氧段NH4+-N的去除率达到53.3%,TN的去除占整个周期TN去除的71.23%,表明好氧反硝化现象对整个周期的脱氮起着主要的作用。

A Study of Aerobic Denitrification in Denitrification of Wastewater

SBR process was used in studying the phenomenon of aerobic denitrification during the denitrification of wastewater. The test procedure was: anoxic mixing for 3 h, aerating for 8 h, anoxic mixing for 1.5 h, settling for 1 h and draining. When the ρ(NH4+-N) and ρ(CODCr)of the influent water were 107 mg/L and 700 mg/L respectively, the removal rate of NH4+-N in the aerobic section reached 53.3% and the TN removal in the said section accounted for 71.23% of that of the whole cycle, which indicated that the aerobic denitrification played the main role in the denitrification in the whole cycle.