臺灣博碩士論文加值系統

本研究探討熱處理溫度及添加物種類對含鉻鋅電鍍污泥鉻溶出值的影響，以期使鉻污泥能資源化、安定化。
含鉻鋅污泥，隨熱處理溫度增加而達安定化效果。XRD顯示ZnFe2O4、ZnCr2O4，為熱處理後，使鉻不易溶出之主要生成物；添加黏土後並1100℃熱處理可有效安定化鉻；添加飛灰於污泥中，因飛灰所含化合物種類甚多，尤其鈣含量大，使熱處理後生成結晶物CaCrO4，可導致燒結物溶出大量鉻；添加氯化鈉生成Na2CrO4，使TCLP溶出值增加；pH值對三價鉻及六價鉻的轉換有所影響，添加NaOH而增加pH值，且形成Na2CrO4，可能為TCLP溶出量增加的原因，在污泥的處置過程中，應控制pH值。

This study investigates the effect of heating temperature and type of additive on chromium leaching. The final goal is to enable the immobzlization and reutilization of chromium- containing sludge.
Chromium leaching can be more effectively reduced with increased heating temperature. The XRD results indicate that ZnFe2O4 and ZnCr2O4 are the main products to immobilize chromium. When mixed with clay, the chromium can be better immobilized only after heating at 1100℃, compared with the raw sludge. The addition of fly ash that contains great amount of calcium compounds tend to mobilize chromium, as indicated by the CaCrO4 formation. The addition of NaCl or NaOH into the sludge will cause an increase of chromium leaching due to the increased pH or/and formation of Na2CrO4.

摘要I
AbstractⅡ
目錄III
表目錄VI
圖目錄Ⅶ
第一章 緒論1
1.1研究動機1
1.2研究內容2
第二章 文獻回顧3
2.1台灣電鍍廠的現況及其廢棄物特性3
2.1.1台灣電鍍廠的現況3
2.1.2廢棄物特性4
2.2鉻的特性4
2.2.1鉻的性質4
2.2.2鉻對人體的影響6
2.3鉻酸鹽的吸附7
2.4廢棄物熱處理8
第三章 實驗設計與方法10
3.1實驗設計10
3.2實驗設備、儀器及藥品10
3.2.1實驗設備及儀器10
3.2.2實驗藥品10
3.3實驗樣品12 3.3.1實場的電鍍污泥12
3.3.3添加化合物於實場電鍍污泥13
3.4分析方法13
3.5檢量線的建立與方法偵測極限16
3.5.1標準溶液的配製16
3.5.2檢量線的建立17
3.5.3偵測極限18
3.5.3.1FAAs的偵測極限18
3.5.3.2 IC的偵測極限19
第四章 結果與討論20
4.1樣品的基本成份分析20
4.1.1電鍍廠20
4.2熱處理之結果21
4.2.1熱處理後樣品之TCLP溶出結果21
4.2.2 熱處理樣品之XRD分析22
4.2.2.1 原廠污泥經熱處理之XRD22
4.2.2.2原廠污泥添加黏土經熱處理之XRD23
4.2.2.3原廠污泥添加飛灰經熱處理之XRD23
4.2.2.4原廠污泥加 NaCl經熱處理之XRD24
4.2.2.5廠污泥加 NaOH經熱處理之XRD24
第五章 結論與建議38
5.1結論38
5.2建議39
參考文獻40

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