某城市生活垃圾综合分选处理系统设计

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1、河北工业大学城市学院课程设计说明书作者：杨月兰学号：116765学院：能源与环境工程学院系(专业)：环境工程题目：某城市生活垃圾综合分选处理系统设计指导教师：田利2015年1月6日目录1绪论·························································42垃圾分选的意义···············································42．1生活垃圾分选的定义····································

2、····42.2不做垃圾分选的缺陷·········································42.3目前生活垃圾分选的现状······································53垃圾分选的设备及简介·····································73.1贮仓························································7273.2抓斗···························

3、····························84设计的任务和要求···········································94.1课程设计的题目···········································94.2课程设计的目的···········································104.3设计原始资料············································104.4设计内容和要求·

4、········································105设备的选型与设计计算····································115.127垃圾分选工艺流程图····································115.2分选工艺物料恒算········································125.3垃圾储料仓···············································135.4吊

5、车、抓斗的选择·········································145.5滚筒破碎机的选择········································145.5.1选型··················································145.5.2计算校核··············································155.6垃圾滚筒筛······························

6、·················15275.7风选设备···················································165.8输送带···················································186总结························································227、参考文献··················································

7、·····24271绪论中国垃圾处理起步较晚，垃圾无害化处理能力较低，曾出现垃圾包围城市的严重局面。近年来，中国环境卫生行业有了较大的发展，使城镇垃圾处理水平提高，垃圾包围城市的现象有所缓解。据1994年统计，全国城市共有环卫职工约38万人，拥有各种环卫机械约34400辆，垃圾处理率达35.8%，建成无害化处理场609座，垃圾的无害化处理能力和处理率近几年来增长十分显著。中国主要城市都建立了环境卫生科研机构，开展了城市垃圾处理技术、设备的研究工作。“八五”期间国家即拨款近千万元、贷款数千万元用于开展城市垃圾堆

8、肥、填埋、焚烧及资源化利用的科研、开发和示范项目的建设。2垃圾分选的意义2.1生活垃圾分选的定义27生活垃圾分选技术就是将生活垃圾中的各种可回收利用的成分或不利于后续处理工艺要求的成分采用适当技术分离出来的过程。城市生活垃圾的组分复杂而不稳定，根据其粒度、密度、磁性、电性、光电性、摩擦性、弹性的物理、化学性质的不同，可分别选用筛选、重力分选、磁力分选、电力分选、光电分选、摩擦及弹跳分选的分选技术进行