仿生组合工艺对污水厂尾水深度净化效果的中试研究

摘要

At present, the impact of the tail water of urban sewage treatment plant on quality of the receiving water is cannot be ignored.The water quality improvement of the lake was taken as the purpose in this study .Bionic combination process was used to study the tail water depth purification pilot.The results showed that:COD degradation efficiency of the bionic combination process is 42.31%~67.95%.The bionic combination process is highly adaptive to the fluctuation of the tail water COD;The de-fect of the bionic packed bed, which is the adaptation period for the degradation of NH3 -N and TP, is made up by the bionic combination process;The NH3 -N removal rate of the wastewater treatment plant tail water with the bionic combination process is ranged from 89.57%~97.89%; The TP removal efficiency is enhanced by the bionic combination process and the removal rate is 53.85%~72.41%.The TP concentration of the effluent reaches the III level of the surface water; The SS removal efficiency of the bionic combination process reaches 37.50%~64%.%当前，城镇污水处理厂尾水对受纳水体的水质有着不可忽视的影响。以改善湖泊水质为目的，使用仿生组合工艺对尾水进行深度净化研究。结果表明：仿生组合工艺对尾水COD 的降解效率达到42．31％～67．95％，对COD波动具有较高的适应性；仿生组合工艺弥补了仿生填料床对NH3－N、TP的降解具有适应期的缺陷；仿生组合工艺对尾水NH3－N去除率高达89．57％～97．89％；仿生组合工艺强化了对TP的去除率，去除率为53．85％～72．41％，出水TP达到地表水III类水标准；仿生组合工艺SS去除效率达到37．50％～64％。