农业环境科学学报2012，Vol.31Issue(6)：1244-1249,6.
蚯蚓堆肥处理剩余污泥混合有机垃圾的效率研究
Efficiency of Vermicomposting on Organic-Waste-Mixed Municipal Sludge
摘要
Abstract
The effects of medium stack height and high inoculum density on earthworm's biomass and efficiency of vermicomposling were investigated in Eiseniafoelida vermicomposting on organic-waste-mixed municipal sludge. Combining medium stack height and earthworm inoculum density (mass ratio, worm wet mass/sludge dry mass), six treatments, i.e., 1/10-10 cm, 1/10-15 cm, 1/15-10 em, 1/15-15 cm, 1/20-10 cm and 1/20-15 cm, respectively, were set in the experiment. Results showed that, under the same medium stack height, the biomass of earthworms was negatively correlated with their inoculum density significantly. However, the effect of inoculum density on the efficiency of vermicomposting was limited. Specifically, there was significant difference in the efficiency of vermicomposting between high-density group (1/10) and low-density ones (1/15 and 1/20), while insignificant between the latter two groups, 1/15 and 1/20. Under the same inoculum density, the effect of medium stack height on the efficiency of vermicomposting was insignificant, whereas on the earthworm's biomass, there was a critical point of inoculum density(1/15) where the earthworm's biomass was positively correlated with medium stack height significantly, while a lot above or below this density point, medium stack height had no significant effect. In the view of industrial application, there is a trade-off between the reproductive ability for the earthworm population and the efficiency of vermicomposting, and thereby the inoculum density of 1/20 and the medium stack height of 15 cm are possibly the optimum parameters for the vermicomposting of Eiserna foetida on the organic-waste-mixed municipal sludge.关键词
蚯蚓堆肥/有机垃圾/剩余污泥/接种密度/堆料高度Key words
vermicomposting/ organic waste/ municipal sludge/ inoculum density/ medium stack height分类
农业科技引用本文复制引用
陈大志,刘顺会,林秋奇,吴艳..蚯蚓堆肥处理剩余污泥混合有机垃圾的效率研究[J].农业环境科学学报,2012,31(6):1244-1249,6.基金项目
国家自然科学基金(31170437) （31170437）
广东省水环境污染控制重点实验室开放基金(2011001) （2011001）
