某热电厂净水预处理系统曝气生物滤池的调试启动过程研究

Study on start-up of the biological aerated filter of purification pretreatment system in a thermal power plant

对某热电厂曝气生物滤池的接种驯化、挂膜启动、满负荷运行3个调试启动期间出水COD、NH3-N含量及其去除率进行有效分析研究。结果表明当曝气生物滤池进水COD、NH3-N含量分别稳定在40mg／L、50mg／L时，出水COD≤10mg／L、NH3-N≤5mg／L，COD去除率达到75oA～85％，NH3-N去除率达到85％～959／6，出水水质满足后续工艺使用要求。

During the biological aerated filter of a thermal power plant commissioning start-up period, including inoculation and acclimation, biofilm star-up and full load operation three stages the content and removal rate of COD and NH3--N in the effluent water were analyzed and studied. The result showed that when the inflow COD and NH3-N content were stable in the 40 mg/L, 50 mg/L, the effluent COD≤10 mg/L, NH3-N≤ 5 mg/L, removal rate COD reached 75% to 85% and NH3-N 85% to 95%, effluent water quality meet the follow-up process requirements.