| 摘要: | 工業區工廠類別不一，產生之廢水成分多元且淨化處理不易，加上極端氣候造成水資源缺乏問題，若能將廢水回收再利用，可有效增加水資源；因此實需要能處理綜合性廢水，使水質達到可回收之淨化系統。本研究以薄膜生物處理(Membrane Bio-Reactor, MBR) 系統，進行廢水之處理操作成本計算及水質處理效率。試驗區採用新竹工業區東區污水廠，綜合性廢水經初級物理處理後分別進入MBR系統及高壓氧化系統，MBR系統處理後其懸浮固體(Suspended Solids, SS)、化學需氧量(Chemical Oxygen Demand, COD)和生化需氧量(Biochemical Oxygen Demand, BOD)之處理效率分別約為98.15%、84.55%、97.82%，出流水質其SS、COD和BOD等三項水質標準平均為1.93 mg/L、24.6mg/L及1.89mg/L，水質已達沖廁、澆灌或抑塵水等用途，或提供廢水回收再利用程序前置處理水。MBR處理系統每噸污水所需面積為0.11m2/m3及操作成本10.52元/m3，總體經濟效益評估佳。
In industrial areas, various types of plants result in multiple components of waste water, which increases the purification difficulty. Moreover, extreme weather induces the lack of water resources. If the waste water can be recycled, the water resources will be increased. Therefore, it is necessary to develop a purification system, which can purify the integrated wastewater to reach the recycling standard. In this study, the Membrane Bio-Reactor (MBR) system was used to calculate the wastewater treatment operation cost and estimate the efficiency of treatment of water quality. The Hsinchu Industrial Zone (Eastern) Wastewater Treatment Plant was adopted as the experimental area. The comprehensive wastewater entered the MBR system and the high-pressure oxidation system after primary physical treatment. The treatment efficiency of Suspended Solids (SS), Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand(BOD) after MBR system treatment were 98.15%, 84.55% and 97.82%, respectively. The average purification efficiency of water quality standards of SS, COD and BOD are 1.93 mg/L, 24.6mg/L and 1.89mg/L , which reach the requirement in flushing, watering or dusting water, or the supply of pre-treatment water for wastewater recycling programs. As a result, the required area per ton of wastewater from the MBR treatment system is 0.11 m2/m3 and the operating cost is 10.52 yuan/m3. |
