520吨每天污泥干化及焚烧处理工艺设计 --本科毕业设计

本科毕业设计（论文）

250吨/天印染污泥干化及焚烧处理

工艺设计

学 院 环境科学与工程 专 业 环境工程

设计总说明

随着印染行业蓬勃发展，我国对印染废水处理力度在不断加大，每天处理污水产生相应大量污泥,污泥量日益增加，产生的污泥的组成成分日益复杂，如处理不当，必然会对自然环境造成二次污染，存在比较严重的环境安全隐患。

本设计要求处理250吨/天的印染污泥，原污泥为经过板框压滤机压滤过的含水率约82%的湿污泥。针对印染污泥的特点，结合国外处理污泥的成功经验以及国内对印染污泥的成熟工艺，决定选用先干化后焚烧的工艺。该工艺具有工艺成熟、稳定、节能、占地少、效率高等优点。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Ф3.0×28m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：印染污泥 干化 焚烧 回收利用

Design illuminate

With printing and dyeing industry vigorous development, the printing and dyeing wastewater treatment in growing, every day to produce large amounts of sewage sludge, the sludge quantity increasing, the components of sludge produced by the increasingly complex, such as improper handling, is bound to cause secondary pollution to the natural environment, there are serious environmental safety hidden trouble.

In this design, projects required to treat 250 tons/day printing and dyeing sludge. Moisture content of the original sludge，which has been pressed by the frame filter，is approximately 82%. Aiming at the characteristic of dyeing sludge, and in the light of the successful experience of external treatment of dyeing sludge and mature technology of internal treatment of that, we select drying and incineration technology. Such a technology has the advantage of mature, stable, energy-saving, small footprint and high efficiency. Basic process is: Stored mud room → Rotary dryer brick machine → Incinerator slag → Ash and other recycled.

The main equipment used in the design is Ф3.0 × 28m Rotary Dryer, AB-200 type incinerator, QTY8-15 block making machine, ppw64-7 Pulse bag filter, Ф1.5 × 16m desulfurization tower, LXT-5-type activated carbon adsorption tower. The total investment is 13.05 million yuan, the total annual operating cost is 12,643,400 yuan

Keywords： dyeing 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 .............................................................. 3 2.1 国内外污泥处理处置现状 ............................................ 3 2.2 项目意义 .......................................................... 4 2.3 印染污泥的特点 .................................................... 4 2.4 印染污泥适用处理方法 .............................................. 4 2.4.1 印染污泥稳定化方法 ............................................. 5 2.4.2 印染污泥的无害化方法 ........................................... 5 2.4.3 印染污泥的最终处置 ............................................. 6 3 设计范围、依据及原则 .................................................. 8 3.1 设计范围 .......................................................... 8 3.2 设计依据 .......................................................... 8 3.2.1 国家法律、法规及政策 ........................................... 8 3.2.2 地方法规及政策 ................................................. 9 3.2.3 技术规范和行业标准 ............................................. 9 3.3 3设计原则 ........................................................ 10 4 工艺流程及说明 ....................................................... 11 5 设计内容 ............................................................. 13 5.1 厂址 ............................................................. 13 5.1.1 总图布置 ...................................................... 13 5.1.2 厂区道路和运输 ................................................ 13 5.1.3 结构设计 ...................................................... 13