膜法回用印染廢水

生物工程論文編號:SW105  論文字數:11864,頁數:30

目  錄
中文摘要 I
英文摘要 II
目  錄 III
1  緒論 1
1.1  印染廢水的水量和來源 1
1.2  印染廢水的特點和現狀 1
1.3  印染廢水常用的處理方法 2
1.4  膜分離的基本原理 3
1.5  膜分離的特點與現狀 4
2  實驗部分 4
2.1  水質情況 4
2.2  主要儀器設備 4
2.3  主要測量方法 5
2.4  實驗過程及數據處理 6
3  工藝方案比選 20
3.1 方案一EC+UF+ED+RO組合工藝 20
3.2  方案二EC+UF+NF+RO組合工藝 21
3.3  方案三EC+UF+二級RO組合工藝 22
3.4  方案四UF+NF+RO組合工藝 23
3.5  方案比較 23
4  實驗結果與討論 25
致  謝 25
參考文獻 25

摘要：印染廢水組分復雜，常含有多種染料，色度深、毒性強、難降解、pH 值波動大，而且濃度高，廢水量大，是難處理的工業廢水之一。常用處理方法可分為物理法、化學法與生物法三類,其中膜分離技術處理印染廢水具有選擇性好、生產效率高、設備簡單、操作方便、無相變和節能等特點[1]，在印染廢水的處理上具有潛在的應用前景。
 本文通過電化學和膜集成技術各工藝處理印染廢水，比較多種組合工藝的優缺點，得出可行并運行穩定的組合工藝，使處理后的印染廢水達到回用要求，并回用于生產或排放為農灌水。比較得出工藝一（EC+UF+ED+RO即廢水經過電化學和超濾預處理，再經電滲析脫鹽，電導在10000μs/cm左右進反滲透深度處理）技術先進、可操作性強、運行穩定符合要求。處理后COD≤180 mg/l，色度≤0.1 mg/l，pH在6.5到8之間，電導率≤1000μs/cm。

關鍵詞：印染廢水；膜；分離；電化學

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