新型一体化反应器的启动及其脱氮性能初试

Start up and Nitrogen Removal Performance of a New Integrated Reactor

提出一种新型的一体化生物膜反应器用于生活污水脱氮的处理,考察了反应器启动阶段出水的变化.生物膜驯化成熟后,考察了系统对总氮的去除效果,结果表明在水力停留时间为24 h,进水总氮37.69 mg/L时,反应器总氮去除率达到85%.此状态下,对反应器单个运行周期的脱氮特性进行了考察,结果表明连续出水水质稳定,氨氮去除率达到98%,出水氨氮基本维持在1 mg/L以下.

A novel integrated biofilm reactor for nitrogen removal of domestic wastewater was proposed, and the effluent change of the reactor was investigated during the start-up phase. The effect of TN （ total nitrogen） re- moval was investigated in the system after the biofilm acclimation was mature. With the influent TN is 37.69 mg/ L and 24 h of HRT （Hydraulic Retention Time）, the TN removal efficiency is 85%. The investigation ofnitro- gen variation in one operation cycle shows that the effluent quality was steady and NH4＋ -N （ammonia nitrogen） removal efficiency reached 98% with the the concentration of NH4＋-N of the effluent less than 1 mg/L.