本研究利用薄膜生物反應器系統處理光電廠所產生的有機廢水並去除廢水中有機碳化合物達到可回收之用水，並探討整個操作中需要改善之方法。 本研究以實廠模組來研究，運用AOAO操作模式規劃為厭氧→好氧→厭氧→好氧四座槽體操作降解廢水中有機碳氫化合物，實驗過程分為三個階段，第一階段:為馴養污泥期，投入污泥濃度6000 mg/L之污泥，先由微生物最適生長環境探討，其從pH、DO及ORP來了解，使微生物能達到最大降解有機碳能力，控制水質參數:pH值調整至6.8~8.0，DO值為1 ～ 3mg/L，將污泥SV30維持在20～35%之間。MLSS方面則控制在3000～6000 mg/L之間，在SVI維持在60～80mL/g時，探討其微生物馴養狀況與COD降解率；第二階段為操作薄膜過濾系統，以產水15min，反洗30sec，為操作條件。在維護保養方面，則維持在一週定期保清一次，半年藥洗一次。第三階段:探討其放流水水質，AOAO操作模式可降解COD至20 mg/L，去除率可以高達98%，TOC可以維持在10 mg/L以下，濁度控制在1 NTU以內，符合科學園區納管及一般排放標準。 The purpose of this study is utilizing membrane bioreactor for water reuse and organic material removal in the photoelectric industrial wastewater treatment. The optimization of the process was investigated for the improvement on the MBR performance. The industrial plant in southern Taiwan science Park was used for the optimization of MBR process. The AOAO operating cycle were used for this purpose to degradation of organic material and TOC removal in wastewater. The three stage of this investigation were carried out for the wastewater treatment. In the first stage, the MLSS was maintained about 6000 mg/L for cultivated activated sludge. The acclimation of activated sludge was appeared in this stage and few of organic material degradation were happen. Some of the parameters were controlled in the following range: pH 6.8-8.0, DO 1-3 mg/L, SV30 20-35%, MLSS 3000-6000 mL/g, and SVI 60-80 mL/g. the biodegradation rate and COD removal was investigated in this stage. In the second stage, the membrane filtration units were processed for water reuse under a 15 minutes production and 30 seconds backwash operation. The maintain process were carried out by a weekly physical cleaning and a six-monthly chemical cleaning operation. The final stage was focused on the quality of reused water from the AOAO process. Finally, the effluent reuse-water achieved the following quality: COD below 20 mg/L, COD removal higher than 98%, TOC below 10 mg/L, and turbidity of reuse water below 1 NTU. All the quality reuse-water qualified the effluent standard of EPA and receive standard of wastewater plant of southern Taiwan science Park.
