摘要论文研究了膜技术用于中水回用工艺的进展和情况。根据苏北A污水处理厂的实际状况设计了中水回用工艺，指出超滤系统作为反渗透系统的预处理和传统的杀菌凝聚澄清过滤比较，在技术上有很大的优势，占地面积小、运行自动化水平高、自用水率低、出水SDI值低且稳定、运行成本低等优点，主要做工程设计和图纸设计。该工艺通过超滤与反渗透的联用使得同一工艺可以得到不同净化程度的净化水。本文同时研究了水质对膜污染的影响，结果显示中性亲水性有机物会造成膜通量的下降，是膜污染的主要原因。强疏水性、极性亲水性和弱疏水性有机物使得膜通量上升，会减轻膜的污染。25743
关键词 中水回用 超滤 反渗透 膜通量 膜污染
毕业论文设计说明书外文摘要
Title Technology for the use of membrane technology in water reuse implementation
Abstract
Thesis on the progress and situation membrane technology for water reuse technology. According to the actual situation in Northern A sewage treatment plant was designed water reuse technology, noted ultrafiltration system as a pretreatment and traditional sterilization reverse osmosis system compare cohesion clarification and filtration, technically have a great advantage, covers small, high operating level of automation, since the water is low, the water SDI values of low and stable, and low operating costs, mainly to do engineering design and design drawings. The process by ultrafiltration and reverse osmosis combined with so that the same process may get a different degree of purification of purified water. This paper also studied the effect of water quality on membrane fouling, showed neutral hydrophilic organic material may cause a decline in membrane flux, membrane fouling is the main reason. Highly hydrophobic, polar hydrophilic and hydrophobic organics so weak flux rises will reduce membrane fouling.
Keywords water reuse UF RO flux fouling
目 次
1 引言 1
1.1 水资源现状1
1.1.1 全球水资源现状1
1.1.2 中国水资源现状1
1.2 中水回用2
1.2.1 中水回用背景2
1.2.2 国外中水回用现状2
1.2.3 国内中水回用现状2
1.2.4 中水处理技术3
1.2.5 中水回用常用工艺4
1.3 膜分离技术在中水回用中的应用与研究4
1.3.1 膜分离技术发展的历史4
1.3.2 膜分离技术的特点5
1.3.3 超滤膜和反渗透膜用于中水回用5
1.4 本课题研究的意义、目的和内容6
1.4.1 本课题研究的意义和目的6
1.4.2 本课题研究的内容6
2 苏北A污水处理厂中水回用工艺研究7
2.1 工程概况7
2.2 设计依据、范围、规范及原则 7
2.2.1 设计依据7
2.2.2 设计范围7
2.2.3 设计原则7
2.3 设计规模与设计水量7
2.3.1 原水水质7
2.3.2 设计废水处理量8
2.3.3 净化水标准8
2.4 工艺选择9
2.4.1 超滤系统9
2.4.2 反渗透系统9
2.4.3 膜技术用于中水回用的工艺流程9 利用膜处理技术实现中水回用的工艺研究:http://www.youerw.com/huaxue/lunwen_19672.html