| 一种新型的农村生活垃圾资源化工艺技术研究 |
| 摘要点击 2624 全文点击 1613 投稿时间：2008-04-08 修订日期：2008-06-07 |
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| 中文关键词 农村生活垃圾 曝气 资源化 |
| 英文关键词 rural domestic refuse aeration resources utilization |
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| 中文摘要 |
| 在农村生活垃圾于生物反应器厌氧发酵处理的基础上，采用间歇曝气和连续曝气2种供氧方式，研究了厌氧发酵龄3、 5和7个月的农村生活垃圾的资源化处理技术.结果表明，曝气对发酵垃圾不仅具有较好的除水效果，而且可加速有机质的降解.从曝气角度而言，连续曝气的除水效果优于间歇曝气，间歇曝气对不同发酵龄垃圾除水效果有显著性差异，除水效果随着发酵龄的增加而降低.从有机质降解角度而言，连续曝气去除有机质的效果不如间歇曝气，不同发酵龄垃圾有机质去除效果之间呈极显著性差异，去除效果随着发酵龄的增加而降低.综合考虑，宜采用间歇曝气0.06 m3/(min·m3)，厌氧发酵龄3、 5和7个月垃圾经曝气21 d，除水率分别为49.1%、 45.3%和44.0%，有机质去除率分别为41.9%、 24.8%和13.1%.农村生活垃圾厌氧发酵时间以3个月和5个月较适宜.氮、磷、钾等主要营养元素经曝气呈现“浓缩效应”，曝气提高了垃圾的肥效和利用价值. |
| 英文摘要 |
| In order to speed up rural domestic refuse resources utilization， intermittent aeration and continuous aeration were applied to treat rural domestic refuse after anaerobic fermentation. Three kinds of refuse were selected on base of fermentative age， i. e. three months， five months and seven months. Results showed that aeration could remove water and organic materials of the refuse effectively. Points of view on aeration， continuous aeration was better than intermittent aeration， and on the other side， water removal rate increased with ventilation and decreased with fermentative age in the condition of intermittent aeration. On organic materials removal point， it was affected by fermentative age significantly， i. e. increase of fermentative age could resulted in decrease in the removal efficiency. In conclusion, intermittent aeration of 0.06 m3/(min·m3) was considered to be feasible for treatment. The water removal efficiency of three months， five months and seven months fermentative age refuse could be up to 49.1%， 45.3% and 44.0%， and organic compound removal efficiency was 41.9%， 24.8% and 13.1%， respectively， after intermittent aeration for 21 d. Moreover， concentrated effect was presented on major nutrient ingredients， such as total nitrogen， phosphorus， and potassium during the aeration， which realized for resources utilization. |
