微曝氧化沟+BAF污水深度处理能耗潜能分析与节能研究

 城市污水的深度处理必然成为未来发展的趋势，污水处理的能耗问题已经引起人们的关注。某城市污水处理厂采用的是微曝氧化沟+生物曝气滤池(BAF)的污水深度处理工艺，从该工艺处理流程的角度进行了能耗与工序潜能分析，将能耗与潜能联系起来进行了研究。结果表明，工序中微曝氧化沟耗电量最大，占污水处理工艺总电耗的54.59%，其次是进水泵房、污泥泵房和出水泵房，分别占总电耗的13.49%，9.56%和8.69%，曝气系统和污水污泥的动力系统仍是耗能的重点；整个处理工序中化学与生化潜能的减少量分别为231.6×10⁶kJ/d与201.5×10⁶kJ/d，污水进水时所含的潜能量高于整个流程总能耗，微曝氧化沟工序中能耗的上升与潜能的下降速度达到最快；最后，在此分析的基础上从工艺、电气设备和资源再利用3个方面提出了节能措施。

Energy Consumption and Energy Potential of Miraco Bubble Aerated Oxidation Ditch & BAF and Measures of Energy Saving

The advanced treatment of urban sewage and the related energy consumption are issues for concern. The wastewater treatment process of miraco bubble-aerated oxidation ditch and biological aerated filter is studied in this paper, its energy consumption and the process energy potential are analyzed from the perspective of the technical process. The results show that the maximum power consumption in the process of miraco bubble-aerated oxidation ditch accounts for 54.59% in the total power consumption, followed by those in water pumping stations, sludge pumping stations and water pumping stations, respectively, which account for 13.49%, 9.56% and 8.69% in the total power consumption. The aeration system and the sewage sludge dynamic system take still the most important part in the energy consumption. The reductions of chemical energy potential and biological energy potential in the entire process are 231.6×10⁶kJ/d and 201.5×10⁶kJ/d. The potential energy in the sewage water is higher than the total energy consumption, the rates of the increase in the energy consumption and decrease in the energy potential are the greatest in the miraco bubble-aerated oxidation ditch. Some energy-saving measures are proposed for the process, the electrical equipment and the re-use of resources.