印染废水深度处理及回用技术的研究毕业论文

毕业设计说明书(论文)

作 者： 林天德 学 号： 0904150123

院 系： 化学工程学院

专 业： 生物工程

题 目：

指导者： 贾艳萍 副教授

评阅者：

2013 年 6 月 吉 林

摘 要

摘 要

近年来，随着印染工业的迅速发展，日常生活中各种染料的不断使用，使含有复杂成分的印染废水排放到环境中，造成严重的污染。印染废水已经成为我国水域的重点污染源。

本课题以刚果红、溴酚蓝作为模拟印染废水，分别用粉煤灰和壳聚糖以及不同pH下改性后的粉煤灰对模拟印染废水进行处理，其中用盐酸改性的粉煤灰处理时最适pH为6，本实验采用传统脱氮反应，各处理过程均在序批式生物反应器(SBR)中完成。在实验过程中对模拟印染废水的各项指标进行了测定，实验结果表明，处理效果最佳时，NH4+-N浓度为1.5mg/L，去除率最高可达80%；总氮去除率可达50%，DO值在3.18~3.25之间 ，COD浓度可达79mg/L。

关键词：印染废水；SBR；壳聚糖；粉煤灰

Abstract

Abstract In recent years, with the rapid development of printing and dyeing industry, the growing use of various dyes, in everyday life that contain complex elements of printing and dyeing wastewater discharge into the environment, cause serious pollution. Printing and dyeing wastewater has become a key pollution sources of waters in our country.

This topic with Congo red, bromophenol blue as simulated printing and dyeing wastewater, respectively with fly ash under different pH and chitosan and modified fly ash was carried out on the simulated printing and dyeing wastewater treatment, including hydrochloric acid modified fly ash processing when the optimal pH of 6, this experiment adopts the conventional denitrification reaction, all the process in a sequencing batch type bioreactor (SBR). During the experiment to simulate the indicators of printing and dyeing wastewater were determined, and the experimental results show that the best treatment effect, NH4+-N concentration is 1.5 mg/L, the removal rate up to 80%; Total nitrogen removal rate can reach 50%, the DO value between 3.18~3.25, COD concentration of 79 mg/L.

Key words: Printing and dyeing wastewater; SBR; Chitosan; The fly ash

目 录

目 录

摘 要 ............................................................................................................................I Abstract ......................................................................................................................... II 目 录 ......................................................................................................................... III

第1章 绪 论 ............................................................................................................... 1

1.1 课题研究背景 ................................................................................................. 1

1.1.1 水污染现状 ........................................................................................... 1

1.1.2 印染废水来源、水质及水量 ............................................................... 1

1.2 课题研究目的和意义 ..................................................................................... 3

1.2.1 研究目的 ............................................................................................... 3

1.2.2 研究意义 ............................................................................................... 4

1.3 印染废水处理研究现状 ................................................................................. 5

1.3.1 国内外研究现状 ................................................................................... 5

1.3.3 常见的印染废水的处理方法 ............................................................... 6

1.3.3 我国印染废水治理中存在的主要问题 ............................................. 10

1.4 主要研究内容 ............................................................................................... 10

第2章 实验材料和方法 ........................................................................................... 12

2.1 实验材料 ....................................................................................................... 12

2.1.1 水样来源及水质 ................................................................................. 12

2.1.2 实验装置和流程 ................................................................................ 12

2.1.3 仪器设备 ............................................................................................. 13

目 录

2.2 SBR运行方式 ................................................................................................ 14

2.3主要分析项目及方法 .................................................................................... 15

2.3.1 COD的测定 ......................................................................................... 15

2.3.2 NH4+-N的测定 .................................................................................... 18

2.3.3 NO2--N的测定 ..................................................................................... 18

2.3.4 NO3--N的测定 ..................................................................................... 19

第3章 实验结果与讨论 ........................................................................................... 20

3.1 SBR运行启动阶段 ........................................................................................ 20

3.1.1 活性污泥驯化阶段的氨氮浓度及去除率 ......................................... 20

3.1.2 活性污泥驯化阶段的DO浓度的变化 .............................................. 21

3.1.3 活性污泥驯化阶段的COD浓度的变化 ........................................... 22

3.3 壳聚糖处理过程 ........................................................................................... 22

3.2 粉煤灰处理过程 ............................. …… 此处隐藏：11708字，全部文档内容请下载后查看。喜欢就下载吧 ……