When wastewater is treated by eco-filter,the level of pollutants such as COD,BOD_5,total nitrogen and total phosphorus decreases and the ratios of nitrogen forms are significantly different between the influent and the effluent.

• 污水经生态滤池(MEEF)处理后；出水中化学耗氧量(COD)、生物需氧量(BOD5)、总氮(TN)和总磷(TP)的质量浓度降低；氮的形态构成与进水有较大差异.