发布时间 : 星期日 文章300吨天生活污泥干化及焚烧处理工艺设计更新完毕开始阅读5b73b7664bfe04a1b0717fd5360cba1aa8118c9b
毕业设计
300吨/天生活污泥干化及焚烧处理
工艺设计
学 院 能源与环境学院 专 业 环境工程
摘要
随着经济蓬勃发展，我国对生活废水处理力度在不断加大，每天处理污水产生大量污泥,污泥量越来越大，污泥的组成成分日益杂乱，如处理不好，必然会对自然环境造成二次污染。
本设计要求处理300吨/天的生活污泥，原污泥为经过板框压滤机压滤过的含水率约82%的湿污泥。针对生活污泥的特点，决定选用先干化后焚烧的工艺。该工艺工艺成熟、稳定、占地少、效率高。基本工艺流程为：储泥室→回转烘干机→制砖机→焚烧炉→炉渣、煤灰等回收。
本设计所用的主要设备有Ф3.2×28m型回转烘干机、AB-200型焚烧炉、QTY8-15型砌块成型机、ppw64-7脉冲布袋收尘器、Ф1.5×16m脱硫塔、LXT-5型活性炭吸附塔。工程总投资为1305万元，每年的总运行费用为1264.34万元。
关键词：生活污泥 干化 焚烧 回收利用
Summary
With the rapid economic development, China's domestic wastewater treatment efforts in increasing the processing of sewage per day produce large amounts of sludge, sludge volume is growing, increasingly complex composition of the sludge, if handled improperly, it is bound to the natural environment cause secondary pollution, there are serious environmental risks.
The design requirements process 300 tons / day of sludge, raw sludge filter press frame filter through excessive moisture content of about 82% of the wet sludge. For domestic sludge characteristics, combined with the successful experience of foreign processing sludge and mature technology of domestic sewage sludge, we decided to use after the first drying and incineration process. The process technology is mature, stable, energy-saving, small footprint, high efficiency. The basic process is: storage room→dryer→brick machine→Incinerator→slag, coal ash recycling.
The main equipment used in this design are Ф3.2 × 28m Rotary Dryer, AB-200 type incinerator, QTY8-15 block making machine, ppw64-7 pulse bag filter, Ф1.5 × 16m desulfurization tower , LXT-5 activated carbon adsorption tower. The total investment of 13.05 million yuan, the total annual operating costs of 12.6434 million yuan.
Keywords： sludge mummification incineration recycle
目录
1 概述 ..................................................................................................................................... 1 1.1 设计名称 .......................................................................................................................... 1 1.2 设计要求 .......................................................................................................................... 1 1.3 处理处置的一般要求 ...................................................................................................... 1 2 设计背景 ............................................................................................................................. 2 2.1 国内外污泥处理处置现状 .............................................................................................. 2 2.2 项目意义 .......................................................................................................................... 2 2.3 生活污泥的特点 .............................................................................................................. 3 2.4 生活污泥适用处理方法 .................................................................................................. 3 2.4.1 生活污泥稳定化方法 ................................................................................................... 3 2.4.2 生活污泥的无害化方法 ............................................................................................... 4 2.4.3 生活污泥的最终处置 ................................................................................................... 4 3 工艺流程及说明 ................................................................................................................. 5 4 设计内容 ............................................................................................................................. 7 4.1 厂址 .................................................................................................................................. 7 4.1.1 总图布置 ....................................................................................................................... 7 4.1.2 厂区道路和运输 ........................................................................................................... 7 4.1.3 结构设计 ....................................................................................................................... 7 4.1.4 厂区道路、大门、围墙 ............................................................................................... 7 4.2 干化工艺 .......................................................................................................................... 8 4.2.1 干化过程 ....................................................................................................................... 8 4.2.2 加热方式 ....................................................................................................................... 8 4.2.3 污泥干化的热源 ........................................................................................................... 8 4.2.4 污泥干化的系统组成 ................................................................................................... 9 4.2.5 干化设备 ....................................................................................................................... 9 4.2.6 选型计算 ..................................................................................................................... 12 4.3 焚烧工艺 ........................................................................................................................ 15 4.3.1 焚烧设备 ..................................................................................................................... 16