流體化床副產石灰與沖積土混合填平窪地再利用於造林研究

Studies on Depression and Afforestation Using Circulating Fluidized Bed Ash Mixed with Alluvial Soil

陳志杰(Chih-Chieh Chen)

指導教授 ： 張簡水紋

朝陽科技大學/理工學院/環境工程與管理系/碩士(2013年)

摘要

台灣的土壤因所處地區不同，因此能夠提供給植物所需的營養元素也不盡相同，除了使用肥料之外，如果可以藉由土壤改良的方式提供作物成長所需的營養元素，則既可以節省經費，又可將物質充分利用。而台塑石化發電廠以油焦為燃料，經由高溫氧化流體化床發電鍋爐而產生的副產石灰，其特性為高pH值、富含CaSO4及CaO，如能以適當的比例與土壤混合使用，應可達到改變pH值與提供植物必須的營養元素的目的。
本試驗利用沖積土與海砂（兩者等比例）與不同比例的副產石灰加以混合，以五葉松進行盆栽試驗，並於台塑西北堤岸現地以白水木與南洋杉進行試驗。盆栽試驗的結果顯示，種植在混合了副產石灰土壤中的五葉松，其生長速度與株高都有明顯不同，其中以混合比例為0.7：0.7：0.6的生長情形為最佳，但若以植體養份分析的話，則是以混合比例為0.5：0.5：1.0的吸收情形為最佳；可能是因為植體在每個階段所需的養份不同，針對不同階段的需求，可能需要不同營養元素的調整。現地試驗方面，起初栽種白水木與南洋杉，但南洋杉顯然不適合現地的環境，反觀之，白水木則是適應良好；白水木的初步結果與盆栽試驗的結果符合，顯見混合副產石灰能有效改善栽種植物生長的情形。

關鍵字

造林 ； 營養元素 ； 土壤酸鹼值 ； 副產石灰 ； 沖積土

並列摘要

The characteristics of soil in Taiwan are different due to different locations, which can provide different elements to plants. Instead of using chemical fertilizers, we may think if we can take good advantage of materials which can provide elements needed by plants and also save costs. Formosa Petrochemical Plant uses petroleum coke as fuel through circulation fluidized-bed (CFB) steam generator which generates byproduct ash containing high level of CaSO4 and CaO with high pH value. If this byproduct ash can be mixed with soil in proper ratio, it should be able to achieve the purposes of improving pH value and providing essential elements needed by plants.
In this experiment, we use alluvial soil along with sea sand, in equal weight, mixed with the byproduct ash and use Taiwan Short-leaf Pine for pot experiment and Silvery Messerdhmidia and Norkfolk Island Pine for on-site experiment along the sea shore. As results from pot experiment, the Taiwan Short-leaf Pine with mixed soil shows obvious improvements in both growing speed and plant height, especially for the ratio 0.7:0.7:0.6. Moreover, the best ratio becomes 0.5:0.5:1.0 based on results of plant essential elements analysis. This could be due to different stage of plants needs different essential elements and adjustment for essential elements for different stages might be necessary. For the on-site experiment, we use Silvery Messerdhmidia and Norkfolk Island Pine for the first trial but the condition of Norkfold Island Pine was severe. On the contrary, the Silvery Messerdhmidia was growing well instead. Finally, the initial results from Silvery Messerdhmidia was consistent with results from pot experiment and it was obvious that this byproduct ash can improve the growth of plants effectively.

並列關鍵字

Essential elements ； afforestation ； Alluvial Soil ； Circulating Fluidized Bed ； Soil pH

參考文獻

陳吉村。東部水田土壤肥力管理。行政院農業委員會花蓮區農業改良場。

The U. S. Department of Agriculture., Soil Quality Indicators: pH(1998).

台塑石化股份有限公司，石化煉油部(2001)。

汪翊鐙。2009。「CFB副產石灰掺配爐石粉製作混凝土成效研究」，碩士論文，國立中央大學，桃園。

李達源。1995。「土壤質地」，土壤分析手冊第二版。台北。