新型改进旋混曝气器研究

Study on the Novel Improved Rotary Mixing Aerator

目的研究新型改进旋混曝气器结构性能。方法向曝气池槽底放置旋混曝气器,充满水,投加还原剂(硫酸钠)和催化剂(硫酸钴)进行脱氧,待水中溶解氧质量浓度降为0后开始曝气,用溶氧仪进行数据记录,研究曝气器充氧效率,并进行对比。结果常温(20℃)同状态下通气8.5 min后至饱和,通过记录测算出新型改进旋混曝气器K1a值比常规旋混曝气器K1a值大,充氧效率高。结论新型改进旋混曝气器的各项充氧性能提到了提高,在一定程度上提高了好氧生物处理效率,可降低污水厂的投资费用和运行成本。

Objective To study the structural performance of a novel improved rotary mixing aerator. Methods A rotary mixing aerator was placed at the bottom of the aeration tank, and the tank was filled with water, followed by adding a reducing agent （sodium sulfate） and a catalyst （cobalt sulfate） to remove oxygen. The concentration of dissolved oxygen in water was reduced to zero before the beginning of aeration, and the data was recorded by the dissolved oxygen meter. The aeration oxygenation efficiency was studied and compared. Results After ventilation for 8.5 min at room temperature （20 ~C） under the same conditions, the saturation status was reached, and the Kla values of the improved rotation mixing aerator were found to be higher than those of the conventional rotary mixing aerator through calculation based on the data recorded, indicating high oxygenation efficiency. Conclusion The overall oxygenation performance of the improved rotary mixing aerator was enhanced,and the aerobic biological treatment efficiency was improved to some extent, which could help to reduce the investment cost and the operation cost in sewage treatment plants.