厦门城市污泥果肥资源化利用研究

为使城市生活污泥得以无害化、资源化综合利用,考察其土地利用的可行性,对集美污水厂的城市污泥经过无害化处理后作为肥料施用于香蕉树,分析了其营养元素对香蕉产量和品质的影响。实验结果表明,污泥有机肥的施用可以促进果树生长,随着污泥有机肥施用量的增加,香蕉的株高、茎围和有效叶片数逐渐提高,但施用量超过1000g/株后,促进作用不再显著。施用污泥有机肥能提高香蕉果实的产量和品质,而且香蕉果实重金属的含量低于国家食品卫生标准中规定的重金属含量限值。本项研究为推广污泥果肥利用提供了试验依据。

Utlization of Sewage Sludge as Fertilizer for Fruit Trees in Xiamen

To enhance the utilization of detoxified city sewage sludge, and to determine the feasibility of sludge land application, lots of experiments were carried out on grapefruit trees fertilized with composted sludge from Jimei Sewage Treatment Plant. The effectiveness of sludge on the yield and quality of banana were studied. The results showed that dramatic improvement of banana＇s plant height, stem circumference and effective green leaves with increasing application rates of sludge. However, more than lO00g/strain application on the banana, the promotion of banana were no longer significant. Sludge organic fertilizer can effectively increase the banana produetion and quality, and the heavy metal content of banana is lower than national food health standards heavy metal content limits. These provide experimental basis for the promoting the application of sludge to banana plantation.