重金屬與灰燼對蚯蚓分解有機廢棄物之研究

Effect of Heavy Metals and MSWI Ashes on OFMSW Biodegradation by Earthworms

劉鴻恩(Hung-en Liu)

指導教授 ： 羅煌木

朝陽科技大學/理工學院/環境工程與管理系/碩士(2009年)

摘要

蚯蚓被應用於評估重金屬對生物的毒性效應，如鎘、鋅、銅、鉻及鎳。
本研究主要目的在利用添加重金屬與灰燼（底灰及飛灰）對蚯蚓分解有機廢棄物之影響。依據本研究結果，獲得之結論如下:
1. 蚯蚓的生長繁殖與餌料的pH值有密切關係，一般以6.8-7.6中性或弱鹼性為宜。過高或過低，常出現不良反應，如脫水萎縮，感覺遲鈍，以至逃逸影響生產。添加重金屬，造成pH明顯下降，成為蚯蚓不喜歡生活的環境。
2. 重金屬添加組監測之重金屬含量趨勢上顯示，重金屬在蚯蚓體內，均有明顯累積的情形。重金屬濃度 10 mg kg-1，蚯蚓均有很高的存活率。並且隨著外在重金屬濃度而增加體內的累積濃度，存活率也有下降的趨勢，其中，蚯蚓對Zn濃度耐受度、存活率最高。

關鍵字

飛灰 ； 底灰 ； 有機廢棄物 ； 重金屬 ； 蚯蚓

並列摘要

Earthworms have been used to assess the toxicity of heavy metals on the biological effects, such as cadmium, zinc, copper, chromium and nickel.
The main purpose of this study was to add in the use of heavy metals and ash (bottom ash and fly ash) on earthworms affect decomposition of organic waste. Based on the results of this study, the conclusions obtained are as follows:
1. Earthworm growth and reproduction and diet are closely related to the pH value, add the heavy metals Cd, Cr, caused by decreased pH, earthworms do not like to become a living environment.
2.In addition the body of heavy metals in earthworms, there is obviously the case of accumulation of earthworms on the accumulation of heavy metals to the highest cadmium. Heavy metal concentration of 10 mg kg-1, earthworms have a high survival rate. And with increasing external concentration of heavy metals accumulated body concentration, the survival rate is also a downward trend, in which the concentration of earthworms on Zn tolerance, the highest survival rate.

並列關鍵字

earthworms ； fly ash ； Keywords: bottom ash ； organic waste ； heavy metals

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