摘要：无机膜具有耐高温、化学稳定性好、pH适用范围广、抗微生物能力强、分离效果好等特点，在工业含油废水的处理方面发挥关键作用。含油废水来源广，成分复杂，对环境污染危害大，不能随意排放，必须经过一系列处理达标后才能排放。本文采用氧化钛改性氧化铝微滤膜处理含油废水中的乳化油，主要考察料液温度、跨膜压差、膜面流速等操作条件对膜分离性能的影响。结果表明：保持料液浓度为1g/L、料液温度为40℃、膜面流速为1。24m/s的条件下，当跨膜压差为0。17MPa时乳化油的截留效果较好，稳定渗透通量最大为42。86L/(m2·h)，并且最终的COD油截留率为79。63%，此时截留液COD为1305mg/L，渗透液COD为265。8mg/L。91660

毕业论文关键词：无机改性陶瓷膜，含油废水，膜分离，COD

Abstract: Inorganic membrane has the features of anti-high temperature, good chemical stability, pH wide range of applications, anti-microbial ability and good separating property etc。 It has played a key role in the industrial oily wastewater treatment。 Oily wastewater causing great harm to the environment has a complex composition and comes from a wide range of sources。 So it cannot be arbitrarily discharged, must go through a series of treatment until it meets to the standard of discharge。 This article uses titanium oxide modified alumina microfiltration membrane to treat emulsified oil in oily wastewater。 The effects of operating conditions such as liquid temperature, transmembrane pressure and cross flow velocity on membrane separation performance  were investigated。 The results showed that  the  appropriate operating     conditions

were found to be the following: T = 40 ℃, △P = 0。17MPa, and v = 1。24m/s。 The maximum

steady flux was 42。86 L/(m2·h)。 The COD value of permeate and retentate were 265。8 mg/L and 1305 mg/L, respectively。 And rejection was 79。63%98。72 %。

Keywords: inorganic modified ceramic film, oily wastewater, membrane separation, COD

目 录

1前言 5

1。1无机陶瓷微滤膜 5

1。1。1无机陶瓷微滤膜简介 5

1。1。2。不对称多孔陶瓷微滤膜 5

1。1。3无机膜的特性 5

1。2含油废水简介 6

1。2。1含油废水的来源 6

1。2。2含油废水的存在状态及源G于J优L尔V论N文M网WwW.youeRw.com 原文+QQ75201`8766 物理化学性质 6

1。2。3 含油废水的处理方法 6

1。3陶瓷微滤膜处理含油废水的研究状况及其发展趋势 7

1。4陶瓷微滤膜分离含油污水的工艺研究 8

1。4。2操作条件对分离效果的影响 8

1。4。3膜结构对分离效果的影响 9

1。5本课题研究目的和意义 9

2实验部分 10

2。1实验原料 10

2。2实验主要仪器及试剂 12

2。3微滤膜的制备过程 12

2。4含油废水模拟制备 13

2。5微滤膜分离含油废水过程