1、 毕业论文文献综述 课 题 名 称: 城市污泥堆肥技术及在园林绿地中 的应用研究 学 生 姓 名: 学号: 指 导 教 师: 职称: 副教授 所 在 学 院: 环境工程学院 专 业 名 称: 环境工程 城市城市污泥堆肥技术及在园林绿地中的应用研究文献综述污泥堆肥技术及在园林绿地中的应用研究文献综述 摘要:摘要:城市污泥是城市污水处理厂经各级处理净化污水而产生的沉积物。 城市污泥的分类, 按处理方法和分离过程不同可分为沉淀污泥(包括物理沉淀污泥、混凝沉淀污泥、化学沉 淀污泥)和生物处理污泥(包括剩余活性污泥、生物膜法污泥) ,随着污水二级处理的普 及,目前一般污水处理厂的污泥大都是沉淀污泥和生物
2、处理污泥的混合物;按是否经过稳 定消化措施可分为生污泥和消化污泥。通过对城市污泥进行堆肥试验以及对植物的种植效 果对比,一方面是将废物资源化,符合可持续发展的理念;第二方面减少了污泥处理的费 用,节约了投资的成本。同时,污泥堆肥还可以进行土壤改良、生产可出售的产品、改善 粪便处理、提高土地利用、降低污染和卫生风险、杀死病原菌、使用堆肥作垫料替代物、 抑制病害以及获得处理或倾倒费。 关键词:关键词:污泥堆肥;石灰;木屑;草坪基质 Literature review of municipal sludge compost technology and its application in gard
3、en green land Abstract Municipal sludge is a kind of sediment produced by municipal wastewater treatment plant at various levels. According to the classification of city sludge, treatment method and separation process can be divided into different sludge (including physical sludge, coagulation and s
4、edimentation of sludge, chemical precipitation and biological treatment of sludge (sludge) including activated sludge, biofilm sludge), with the popularization of the two level of sewage treatment, the sludge of sewage treatment plant are generally is a mixture of sludge and biological sludge after
5、digestion; according to whether the measures can be divided into raw sludge and digested sludge. Through the composting experiment of city sludge and comparison of planting effect on plants, on the one hand is to waste resources, consistent with the concept of sustainable development; second to redu
6、ce the cost of sludge treatment, saving the cost of investment. At the same time, the sludge compost can soil improvement, can sell products, improve waste treatment and improving land use, reduce pollution and health risks, kill pathogenic bacteria, using compost as cushion material substitute, and suppress the disease treatment or dumping fees. Keywords sludge compost lime sawdust turf medium 1 引言 在“十一五”规划中明确提出到 2010 年底,全国城镇污水处理率达到 70%的目标。