MBR系統於高氨氮廢水之研究

A study of high level nitrogen wastewater by using MBR system

張子龍(Tzu-Lung Chang)

指導教授 ： 張添晉

國立臺北科技大學/工程學院/環境規劃與管理研究所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00377

摘要

薄膜生物程序(MBR，Membrane Bioreactor)為近年來具有發展潛力之生物處理程序之一，具有可於高污泥濃度操作、節省空間、減少污泥產量之優點。本研究主要探討利用薄膜生物程序對高濃度氨氮廢水之處理效能，藉由MBR模廠處理實廠廢水，期望能暸解MBR系統處理高氨氮廢水之成效。
本研究設計模廠設備包含進流泵、排水泵、迴流泵、試驗模用槽體、曝氣設備、膜管系統、化學加藥系統等設施；模廠設計進流水量為0.5 CMD，並利用球閥控制維持0.5 CMD廢水進入模廠；本模廠進流水質之COD為2,500mg/L，BOD為1,600mg/L，SS為400mg/L，NH4+-N為350 mg/L，設計之污泥停留時間為18－30天，經過MBR系統處理後之出流水水質均達預期成效，當系統處於穩定狀態下，其COD去除率達90％以上，BOD去除率達90％以上， NH3-N去除率達82％以上，放流水質已達回收水再利用之標準，且由於散氣盤作用得宜，未發生污泥大量附著於模絲外部，造成排水困難之現象。由此可知，本研究利用MBR模廠處理高濃度氨氮廢水之成效良好，MBR系統之優點充分發揮，未來於實廠運用上將更具有可行性。

關鍵字

薄膜生物程序 ； MBR ； 氨氮 ； BOD負荷 ； COD負荷

並列摘要

he purpose of this study is to understand the results of treating industrial wastewater by using MBR system. The membrane bioreactor (MBR) is one of the main researches to treat domestic and industrial wastewater in the recent decades. The elements that comprise a pilot plant include an anoxic tank, an aerobic tank, a MBR tank, a pump of influent effluent and chemical dosing system. The concentrations of influent MLSS,COD, BOD, and NH4+-N is 8,000mg/L, 2,500mg/L, 1,600mg/L and 350mg/L, respectively. Sludge retention time of the system is set from 18-30 days, and the influent of the lysine resin wastewater is fixed at 0.5 CMD. After 60 days operation without any backwash cleaning, the consequences of the experiment show that the removal efficiency of COD, BOD, and NH4+-N is 90%, 90% and 82%, respectively. The COD, BOD and NH4+-N loading of the experiment is with a range from 0.5 to 2.0kg/m3-day,0.5-1.5kg/m3-day and 0.1-0.2kg/m3-day. In this research, the combination of the sludge process and membrane technique process provides high removal efficiency of pollutants.

並列關鍵字

MBR ； NH4+-N ； BOD

參考文獻

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