强化复合式生物反应器除磷功能的试验研究

Study on enhancing the function of phosphorus removal from Hybrid Biological Reactor

针对缺氧/厌氧-好氧复合式生物反应器(A2/O-HBR)进行除磷能力研究,研究结果表明,A2/O-HBR具有一定的生物除磷能力,但其生物除磷能力受系统水力负荷影响较大,当处理系统理论水力停留时间(HRT)在13.3 h、9.4 h、6.0 h、4.5 h时,其TP去除率分别为75%、61%、60%、50%;为解决高水力负荷条件下系统除磷问题,开展了辅助化学除磷强化系统除磷能力的研究,研究结果表明,当三氯化铁投加量为5 mg/L、8 mg/L、15 mg/L(以Fe3+计)时,系统除磷率可分别达到56%、81%、85%;两种不同加药方式不会对系统除磷产生影响.

This study is designed to investigate the phosphorus removal ability of anoxic/anaerobic ＆ aerobic Hybrid Biological Reactor （A2/O-HBR）. The result shows that A2/O-HBR has a certain biological phosphorus removal capacity, but the capacity is much impacted by system hydraulic loading. When the theory hydraulic retention time （HRT） is 13.3h, 9.4h, 6. Oh, 4.5h, and the corresponding TP removal rate is 75%, 61%, 60%, 50%. To solve the problem of system phosphorus removal on high hydraulic loading conditions, the research is launched on strengthening phosphorus removal capacity by chemical measure for assistant removing phosphorus. The result shows that adding ferric chloride with 5mg/L, 8mg/L, 15mg/L（the concentration of Fe^3＋）., corresponding phosphorus removal rate is 56%, 81%, 85 %. Two different dosing ways have no impact on system phosphorus removal.