本研究為利用微生物擔體結合薄膜生物反應槽(membrane bioreactor, MBR)組成之微生物富集系統，透過初期植種培養與薄膜操作特性試驗等，觀察產水通量LMH/TMP及曝氣、薄膜槽MLSS，產水水質對SS、COD、氨氮去除成效。 本研究以日平均處理3CMD，實驗模廠裝置於垃圾滲出水處理場內，置放地點為初沉池單元後面，導入經初沉後處理水進入本實驗模型廠進行薄膜生物反應，藉由微生物富集系統取代現有生物處理單元及活性碳過濾單元，現今廠區經由三級處理後水中懸浮固體物SS：10~25、mg/L 平均值15 mg/L 、COD：90~180 mg/L 平均值130 mg/L，從短期效益而言，是符合國家放流水標準，但就長遠之水資源永續利用與經濟效應，加上日後更嚴格的放流水管制標準而言，如果增加薄膜處理程序，並能夠在不改變原來處理設備程序情形下，因此以薄膜生物反應（MBR）做為目前二級處理後取代三級處理活性碳過濾單元程序，減少活性碳高額藥品費用，減少污泥量產生，對於水資源利用處理與經濟效應具有指標性意義，若能進行深入探討，將來實廠運轉可行性大為增加。 A two-tank system with anoxic and aerobic units was installed on site to assess the treatment feasibility of landfill leachate. The anoxic tank was packed with sponge pellets and followed by an aerobic membrane bioreactor (AMBR) to conduct a microbial enhancement system. Several parameters were examined to evaluate the system performance including MLSS, COD and ammonia-nitrogen.The average flow rate of this pilot plant was 3 CMD and an average membrane flux was maintained at around 12 L/m2-H, a total HRT of this system was controlled at 5 days. 20000 sponge pellets with a dimension of 0.5cm?0.5cm?0.5cm for each pellet were packed in the first tank without aeration. A PTFE membrane was employed for the membrane bioreactor and a suction/relaxation operation mode of 9/1 min was applied in this unit. A 300-day trial run was carried out to examine the system flexibility and permeate quality of this system. The results of this study showed that an average COD of permeate was 130 mg/L and ammonia-nitrogen removal was up to 99%. All the field data indicated that the effluent of this microbial enhancement system can meet the discharge requirement and has the scale-up potential to replace the current units including activated sludge process and activated carbon absorption unit.This study revealed that this microbial enhancement system is more economic and flexible than traditional process on bio-refractory wastewater, and this potenial process can play as an alternative for landfill leachate treatment to meet the strict standard in the future.
