Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/5159
標題: 飛灰滲漏試驗與污染物在不同掩埋遴時間灰層傳輸模式的探討
a study of the leaching test of fly ashes and the model of fly ash layer of different age
作者: 黃家俊
Huang, ChiaJim
關鍵字: 飛灰;fly ash;煤灰;滲漏;滲漏模式
出版社: 環境工程學系
摘要: 
中文摘要本研究的目的在於對燃煤電廠及都市垃圾焚化廠飛灰,以陸地掩
埋方式進行處置時可能對環境所造成的衝擊,以管柱滲漏試驗: 單一掩埋
層及分層掩埋,做進一步的探討。此外,燃煤飛灰進行多重批次試驗,探
討是否能以批次試驗預估管柱試驗中污染物的後期溶出情形。最後進行數
學模式的建立,以分層管柱試驗中部份結果來進行模式的驗證,研究的結
果顯示:單一層管柱試驗中鉻、鉬、硼、鈉及鎂(燃煤飛灰),鉛、鋅、銅
、鈉、鉀、鈣及氯(焚化爐飛灰)之溶出情形為初期濃度較高而後急劇下降
,至於兩批焚化爐飛灰的硫酸根,會隨著淋滲時間的增加而持續的溶出;
在分層管柱試驗中,除了初期污染物濃度較高,每當掩埋新灰層時會有另
一個尖峰濃度值出現。依污水注入地下水標準,鉛、鉻、氯及硫酸根在管
柱試驗中(液固比=3~4)皆高於標準值,銅與鋅則在分別在液固比小於0.3
及0.6時會超過標準值,而在分層掩埋管柱試驗中發現填充新的灰層會導
致鋅濃度超過標準值。燃煤飛灰管柱與批次試驗中鉬、鈉、鎂及鈣之溶出
百分率分別為40%、3%、18%、7%及54%、4%、27%、8%二者相當接近。此外
,若將各物種在批次與管柱中的累積溶出量進行比較可發現,鉬、硼、鈣
及硫酸根具有較佳的一致性,鈉與鎂較難論斷。本研究建立的水分及質傳
動力模式經實驗結果驗證後,能得到良好的模擬結果;靈敏度分析的結果
顯示kn、n、M0、Cmax等參數,是影響污染物溶出情形的重要質傳因子,
待模式所用的參數值更加確定後,即可用來預測飛灰滲出水的質與量,對
日後飛灰掩埋場的操作有很大的幫助。

AbstractThis study examines the effect of coal fly ash and
incineration fly ash on environment by means of batch and column
leaching tests and establishes a mathematical model to predict
quantity and quality from column leaching tests with fly ash
layer of different ages.In one-layer column test, the
concentration of chromium, molybdenum, boron, sodium and
magnesium in coal fly ash leachate and lead, zinc, copper,
sodium, potassium, calcium and chloride in incineration fly ash
leachate decrease sharply at the beginning of the leaching test.
However, sulfate in incineration fly ash leachate change
gradually. In multi-layer column test, after packing fresh fly
ash, the concentration of pollutants in leachate increase
sharply.The concentration of lead, chromium, chloride and
sulfate are found in excess of water-quality standards. At early
stage of column test, copper and zinc are also found in excess
of the standards. However, packed fresh fly ash, zinc is found
in excess of the standards.The leachable fraction of molybdenum,
sodium, magnesium and calcium from coal fly ash are 40%, 3%, 18%
and 7% for column test and 54%, 4%, 27% and 8% for batch test,
respectively. It is possible to predict the accumulative amount
of molybdenum, boron, calcium and sulfate in column test by
batch test.Good agreement between model simulation and
experimental data of laboratory column tests was obtained. The
important parameters : kn、n、M0、Cmax influence the
physicochemical reaction and transport of leachate from fly ash.
URI: http://hdl.handle.net/11455/5159
Appears in Collections:環境工程學系所

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