负荷变化对ABR运行效果的影响研究

利用厌氧折流板反应器(ABR)处理屠宰废水,研究了负荷变化对厌氧折流板反应器(ABR)运行效果的影响。研究结果表明:厌氧折流板反应器对负荷变化的适应能力较强,ABR反应器的特殊结构为其提供了良好的抗负荷变化的能力。当维持进水COD浓度在2500～3000 mg/L范围之内,改变水力负荷,使HRT由27.5 h下降到15 h,COD去除率下降不超过5%;当维持反应器HRT为20 h时,改变有机负荷,使进水COD浓度由2500 mg/L提高到4800 mg/L,在负荷改变后的第二天,COD去除率仅降低1.69%。

Influence of Shock Loading on the Operating Performance of an Anaerobic Baffled Reactor

Wastewater from a slaughtering house was treated by an anaerobic baffle reactor (ABR). The effects of variable loads on the operating performance of the ABR were studied. The results show that the ABR was very stable with respect to shock loading due to its special structure. The change in COD removal efficiency was less than 5% when the influent COD concentration was kept between 2 500~3 000 mg/L and the HRT decreased from 27.5h to15h. When HRT was kept for 20h and the influent COD concentration increased from 2 500 mg/L to 4 800 mg/L, COD removal efficiency only decreased by 69% the second day after the load change.