厦门城市污水处理厂污泥的果肥利用研究  

Utlization of Sludge from Xiamen Municipal Sewage Treatment Plants as Fertilizer for Fruit Trees

作　　者：明银安[1,2] 陶涛[1] 谢小青 戴兰华 林静 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]华中科技大学武昌分校,湖北武汉430064 [3]厦门水务集团有限公司,福建厦门361000 [4]厦门市城市排水监测站,福建厦门361004

出　　处：《中国给水排水》2009年第7期90-93,共4页China Water & Wastewater

基　　金：厦门市社会发展软科学研究计划项目(3502Z20041074)

摘　　要：厦门城市污水处理厂污泥的出路问题日益严重,为了研究其土地利用的可行性,对石渭头污水处理厂的污泥进行适当处理后作为肥料施用于柚子树,分析了其营养元素及土壤、树叶和果肉中重金属的含量。结果表明:污泥的施用可以促进果树生长,能增加表层土壤磷的肥效;重金属元素主要在表层土壤和树叶中迁移、累积,果肉中的含量很低,除Ni外其他各项指标均未超过国家食品卫生标准;Ni的迁移性最强。厦门本岛的城市污泥进行土地利用是可行的,但污泥肥料不能施用于叶类食用作物,且使用前需要降低Ni的含量。The disposal of sludge from Xiamen municipal sewage treatment plants faces a severe problem increasingly. To determine the feasibility of sludge land application, lots of experiments were carried out on grapefruit trees fertilized with eomposted sludge from Shiweitou Sewage Treatment Plant. The nutriments and heavy metals in soil, leaf and pulp of grapefruit were analyzed. The results show that the municipal sludge can accelerate the growth of fruit trees, and can supply TP for plants in the surface soil. The heavy metals are transferred and accumulated mainly in the surface layer soil and leaf. The concentrations of heavy metals are very low in pulp, except that of Ni exceeding the national food sanitation standards. Ni is transferred most quickly. It is feasible for land application to dispose municipal sludge of Xiamen Island, but the sludge fertilizer can not be used for edible leaf plants and the content of Ni must be reduced before land application of sludge.

关 键 词：厦门 城市污泥 土地利用 柚子树 重金属 

分 类 号：X703[环境科学与工程—环境工程]