预处理-高负荷生化反应器-外置式膜生化反应器处理垃圾中转站渗滤液的研究

Study on Treatment of Leachate from Waste Transfer Station by Pretreatment-high-load Bioreactor-external Membrane Bioreactor

采用预处理-高负荷生化反应器-外置式膜生化反应器(MBR)的组合工艺处理垃圾中转站的渗滤液。研究结果表明,利用该组合工艺处理渗滤液后,COD和BOD去除率都超过95%;出水氨氮、总氮浓度分别低于30 mg/L和50 mg/L;SS去除率超过98%,其浓度由1500 mg/L降低至20 mg/L;最后经过外置式超滤的出水水质即可达标排放。

The leachate from the waste transfer station was treated by a combined process of pretreatment-high-load bioreactor-external membrane bioreactor(MBR). The results show that the COD and BOD removal rates are over 95 % after the leachate treatment;the concentrations of effluent NH3-N and TN are lower than 30 mg/L and 50 mg/L, respectively;the SS removal rate is over 98 %, the concentration is reduced from 1500 mg/L to 20 mg/L;finally, the effluent quality of the external ultrafiltration can reach the standard discharge.