| 摘要: | 近年來由於國內對水環境保護意識高漲，在環保署106年修正發布擴大重金屬加嚴管制對象，以及地方政府劃設水污染總量管制區或加嚴放流水標準，業者必須採取更為有效的水處理技術。另一方面，為促進水資源永續利用，亦推動再生水資源發展，因此電混凝法(electro-coagulation，EC)技術，因為擁有較佳的處理效果及具有廢水回收之潛力，近年來逐受重視，此技術與傳統化學混凝法相比有眾多優點，在管末處理上更具有優勢，且能與其他處理技術進行聯用，提升此法的應用價值。另外在廢(污)水回收技術上，因為有較好的處理效率，亦可作為薄膜處理程序的前處理應用。
本研究將電混凝方法的影響因子做一完整整理，並對該案例廠水質條件進行分析，與多數電混凝法研究最大不同之處，在於將使用連續流進行廢水處理，首先，決定整個電混凝程序中最重要的反應槽參數，包含電極材料、電極間距、電極配置等等，再來，研究過程中以初始的pH值及設定電流作為實驗的變數，藉由改變這兩項對電混凝最重要的操作參數，做出一最佳化的操作條件範圍，實驗結果，以最適初始pH為8.5，及在低/中導電度廢水以40 A至45 A、在高導電度廢水以45 A至50 A操作。最後，綜合各項影響因子與反應現象，提出操作上應注意的事項及常見問題，冀望日後可作為他廠設計操作之依據。
;In recent years, due to the rising awareness of water environmental protection in Taiwan, Environmental Protection Administration (EPA) revised and announced Effluent Standards the expansion of heavy metals in 2016. , and the local government designated total water pollution control areas or tightened Effluent Standards. The industry must take more effective measures water treatment technology. On the other hand, in order to promote the sustainable use of water resources and promote the development of renewable water resources, Electro-coagulation (EC) technology has gradually received attention, because of better treatment effect and potential for waste water recycling, compared with the traditional chemical coagulation method, this technology has many advantages. It has more advantages in wastewater treatment, and can be combined with other water treatment technologies to enhance the application value of this method. In addition, in wastewater recycling technology, because of its better treatment efficiency, it can also be used as a pretreatment application for membrane treatment procedures.
In this study, the influence factors of the EC method are sorted out, and the water quality conditions of the case plant are analyzed. The biggest difference from most EC studies is that this study will use continuous flow for wastewater treatment. First, determine the most important parameters of the reaction tank in the entire EC procedure, including electrode material, inter electrode distance, electrodes arrangement, etc. Furthermore, in the research process, the initial pH value and the current density were used as experimental variables, and by changing these two most important operating parameters for EC, an optimal operating condition range was made. Experimental results, with an optimum initial pH of 8.5, and operating at 40 A to 45 A for low/medium conductivity wastewater and 45 A to 50 A for high conductivity wastewater. In the end, by synthesizing various influencing factors and reaction phenomena, points that should be paid attention to in operation and common problems are put forward, hoping to be used as a basis for the design and operation of other factories in the future. |
