EM优化弹性立体填料生物膜的除污效果研究

污水处理系统中的微生态具有对外界干扰进行自我控制和自我适应的能力，微生态的结构越复杂则系统除污能力的稳定性及其适应环境变化的能力也越强。因此，优化生物降解的微生态系统，可为极大程度地提高生物降解效率提供可能。以弹性立体填料为载体，通过常规培养方法及引种和共培养外源微生物EM形成不同生物膜系统，比较了3种生物膜系统的除污性能。结果表明：在EM共培养方式下载体的生物膜量较高，微生物种类更丰富；与常规培养生物膜系统和引种培养EM生物膜系统相比，共培养EM生物膜系统对生活污水中COD、NH3-N、TP的去除效果有较大改善，且系统的稳定运行时间大大延长。

Study on Pollutant Removal Efficiency of Flexible Cubic Packing Biofilm Optimized by EM

Micro-ecosystem in a wastewater treatment system has the adaptive control abilities for outside influences. The more complicated the structure of micro-ecosystem, the stronger the stability of pollutant removal ability of the system and its ability for adapting environment changes. Therefore, optimizing the micro-ecosystem allows the biodegradation efficiency to be improved. Taking flexible cubic packing as carrier, the different biofilm systems are formed by the conventional cultivation, introductioncultivation and co-cultivation of EM. The performances of the three types of biofilm systems were investigated. The results show that the biomass and kinds of biofilm are higher under the co-cultivation method. Compared with the conventional cultivation and introduction-cultivation, the biodegradation effects of COD, NH3 - N and TP by the EM co-cultivation biofilm system are higher, and the time of stabilization and operation of the system is longer.