污泥碳化最佳操作模式及RDF-5製造以宜蘭地區水資源回收中心-碳化驗證示範廠為例

台灣近年下水污泥因接管率的增加造成各縣市污水廠污泥產量每年逐漸增加，下水污泥的增加會造成污水廠營運成本提高，近年來台灣開始發展生質能燃料以達到永續發展之功效，其下水污泥目前除了衛生掩埋及污泥焚化為較常見之下水污泥處理方式。目前碳化污泥技術在亞洲鄰近的國家皆有相關之技術，其技術在台灣雖有相關研究及文獻但目前尚未有工廠化之相關數據及分析。本研究是以『宜蘭地區水資源回收中心-碳化驗證示範廠』為例，在不同的收受量、乾燥後含水率及碳化溫度進行比對共計27種模式下操作數值進行最佳操作數據選擇，每種操作模式下共計進行72小時，每六小時進行乾燥後含水率、碳化後含水率、乾燥後熱值、碳化後熱值進行取樣分析，最佳操作數據分析包含最終產物的熱值以及能耗，最終將選擇兩種不同碳化溫度下最佳操作參數。在選擇後之兩個最佳操作參數下進行碳化污泥再利用之測試，以下水碳化污泥進行RDF5造粒測試試驗，在減少產品成本狀態下盡可能產出RDF5，已達到最終下水污泥燃料化之方向。本研究在經過造粒測試後，目前僅以加水的方式即可產出碳化棒，其碳化棒呈燃料棒狀，長度約為25MM-30MM直徑約8MM左右大小不一，因目前僅為測試階段，故每小時產量約為200公斤，加水的目的為造粒機降溫使用，在造粒後經過熱卡計測試後與碳化後熱值相差不多，大約為3500-4000卡。未來希望在測試結束後，經過環保署再利用許可申請的方式，將下水污泥達到再利用及燃料化之願景。

關鍵字

污泥碳化；最佳操作

並列摘要

The increase in sewage sludge in Taiwan in recent years has caused the sludge output of sewage plants in counties and cities to gradually increase every year. The increase in sewage sludge will increase the operating costs of sewage plants. In recent years, Taiwan has begun to develop biomass fuels to achieve sustainable development. The effectiveness of its sewage sludge is currently in addition to sanitary burial and sludge incineration as the more common sewage sludge treatment methods. At present, carbonized sludge technology has related technologies in neighboring countries in Asia. Although the technology has related research and literature in Taiwan, there is no relevant data and analysis of factorization. This study takes "Yilan Water Resources Recovery Center-Carbonization Verification Demonstration Plant" as an example. It compares the operating values in 27 modes under different receiving volume, moisture content after drying, and carbonization temperature to select the best operating data. A total of 72 hours in each operation mode, every six hours after drying moisture content, carbonization moisture content, drying heating value, carbonization heating value for sampling analysis, the best operation data analysis includes the final product's heating value and energy In the end, the best operating parameters at two different carbonization temperatures will be selected. Carry out the carbonized sludge reuse test under the two best operating parameters after the selection. Carry out the RDF5 granulation test for the carbonized sludge of the following water to produce RDF5 as much as possible while reducing the product cost, which has reached the final sewage sludge The direction of fueling. After the granulation test in this study, carbonized rods can be produced by adding water only. The carbonized rods are fuel rod-shaped, with a length of about 25mm and a diameter of about 3mm. The size varies. Because it is currently only a testing stage, so The output is about 100 kilograms per hour. The purpose of adding water is to cool the pelletizer. After pelletizing, the calorific value after the calorimeter test is similar to that after carbonization, which is about 3500-4000 calories. In the future, it is hoped that after the test is over, the sewage sludge can be reused and fueled by the EPA through the application for a reuse permit.