反硝化聚磷菌菌剂强化SBR处理效果研究

Effect of Denitrifying Phosphorus-accumulating Bacteria Agent on SBR Treatment

目的研究不同反硝化聚磷菌菌剂投加量对SBR反应器脱氮除磷及有机物去除的强化效果。方法采用SBR反应装置,以模拟污水为基质,分别向5个SBR反应器中投加不同质量反硝化聚磷菌菌剂0 g、0.5 g、1.0 g、1.5 g和2.0 g,对反应器的脱氮除磷效果进行分析。结果菌剂投加量1.5 g/L对SBR系统脱氮除磷的强化处理效果最好,COD、TP、NO_(3)^(-)-N的去除率分别为97.26%、96.47%和100%,出水质量浓度达到《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准。系统运行30 d后,除磷和脱氮效率分别提高了8.38%和13.03%。结论相较于传统SBR法而言,投加适量的微生物菌剂能够在节约碳源、不改变反应器构造的同时,显著改善污水处理效果。

The purpose of the experiment is to study the effect of denitrifying phosphorus accumulating bacteria agent dosage on removal of nitrogen,phosphorus and organic matter in sequencing batch reactor(SBR).The removal efficiency of nitrogen and phosphorus is analyzed in SBR reactor with denitrifying phosphorus accumulating bacteria agent added(0 g,0.5 g,1.0 g,1.5 g,and 2.0 g).The results showed that the 1.5 g/L of bacteria agent was best for the denitrification and dephosphorization in the SBR reactor,with removal efficiency of 97.26%COD,96.47%TP and 100%NO_(3)^(-)N.And water quality of its effluent reached the level 1A standard of″Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant″(GB 18918-2002).After 30 days of operation,the phosphorus removal and nitrogen removal efficiencies were increased by 8.38%and 13.03%.So compared with the traditional SBR method,adding an appropriate amount of microbial agent can significantly improve the sewage treatment effect and save carbon resources while not changing the reactor structure.