膜法回用印染废水

文档编号:SW105  文档字数:11864,页数:30

摘要：印染废水组分复杂，常含有多种染料，色度深、毒性强、难降解、pH 值波动大，而且浓度高，废水量大，是难处理的工业废水之一。常用处理方法可分为物理法、化学法与生物法三类,其中膜分离技术处理印染废水具有选择性好、生产效率高、设备简单、操作方便、无相变和节能等特点[1]，在印染废水的处理上具有潜在的应用前景。
 本文通过电化学和膜集成技术各工艺处理印染废水，比较多种组合工艺的优缺点，得出可行并运行稳定的组合工艺，使处理后的印染废水达到回用要求，并回用于生产或排放为农灌水。比较得出工艺一（EC+UF+ED+RO即废水经过电化学和超滤预处理，再经电渗析脱盐，电导在10000μs/cm左右进反渗透深度处理）技术先进、可操作性强、运行稳定符合要求。处理后COD≤180 mg/l，色度≤0.1 mg/l，pH在6.5到8之间，电导率≤1000μs/cm。

关键词：印染废水；膜；分离；电化学

Reuse printing and dyeing wastewater by membrane

英文摘要
Abstract: The components of printing and dyeing wastewater is complicated, contain a variety of dyes, deep chromaticity, strong toxic, hard-degradation, pH fluctuations, and high concentration, large amount of water, is difficult to treat. Commonly used treatment can be classified into physical, chemical and biological methods, the membrane separation technology for the treatment of printing and dyeing wastewater has good selectivity, high production efficiency, the equipment is simple, convenient operation, no phase and energy saving, etc[1]. Has the potential application prospect in printing and dyeing wastewater treatment.
 Through the electrochemical and membrane integration technology treatment dyeing and printing wastewater, compare the advantages and disadvantages of various combination process, work out one combination process has the feasibility and stable operation. After the treatment make the printing and dyeing wastewater to achieve reuses requirements, and used in manufacturing or discharge of water. The conclusion shows the craft (EC+UF+ED+RO namely wastewater pretreatment by electrochemical and ultrafiltration, then desalination by electrodialysis, into reverse osmosis deep treatment when conductivity in 10000μs/cm) comply with the requirements which have advanced technology; the maneuverability is strong and stable operation. After processing COD≤180 mg/l, chromaticity≤0.1 mg/l, pH is 6.5 to 8, conductivity≤1000μs/cm.

Keywords：Printing and dyeing wastewater; membrane; separate; electrochemical

目  录
中文摘要 I
英文摘要 II
目  录 III
1  绪论 1
1.1  印染废水的水量和来源 1
1.2  印染废水的特点和现状 1
1.3  印染废水常用的处理方法 2
1.4  膜分离的基本原理 3
1.5  膜分离的特点与现状 4
2  实验部分 4
2.1  水质情况 4
2.2  主要仪器设备 4
2.3  主要测量方法 5
2.4  实验过程及数据处理 6
3  工艺方案比选 20
3.1 方案一EC+UF+ED+RO组合工艺 20
3.2  方案二EC+UF+NF+RO组合工艺 21
3.3  方案三EC+UF+二级RO组合工艺 22
3.4  方案四UF+NF+RO组合工艺 23
3.5  方案比较 23
4  实验结果与讨论 25
致  谢 25
参考文献 25

相关论文