悬浮填料单元在活性污泥改造中的应用

将悬浮填料装填入格网,制成体积一定的悬浮填料单元。分别投入曝气池的厌氧区和好氧区,形成悬浮填料和活性污泥复合工艺中试系统。然后,考察在复合系统在不同填料填充率、曝气量和水力停留时间的氨氮去除率。我们发现最优条件下,氨氮去除率较高,复合系统最稳定。最优条件为：填充率为35%;好氧段曝气量为5 m3/h,厌氧段曝气量为0.3 m3/h;水力停留时间为8 h。在此条件下,氨氮去除率比活性污泥工艺提高了18%。

Application of Suspension Carrier Unit in Redevelopment of Activated Sludge

Filling net with the suspension carrier,then the net were in form of suspension carrier unit.Placing the unit into anoxic area and aerobic area,the two areas were segmented from aeration tank.Then activated sludge process was transformed into a bench-scale hybrid process,which included suspended carrier and activated sludge.The NH3-N mean removal rates of HY in conditions of different filling rates,different aeration quantity and different hydraulic retention time were determined.The optimum conditions was that the NH3-N mean removal rates was maximum and the HY process is stable most.The optimization combination was that filling rates 35%,5 m3/h aeration in aerobic area and 0.3 m3/h aeration in anoxic area,HRT was 8 h.Under such conditions,the NH3-N mean removal rates increased by about 18% compared with AS process.