文档介绍：苏州科技学院硕士学位论文摘要
摘要
本文研究了超声强化混凝降低饮用水中残余铝以及超声/零价铁、超声/过氧
化氢降解水中有机微污染物的效能。研究了不同的超声加入方式时,各因素对超
声强化混凝降低饮用水中残余铝的影响,其中包括超声作用时间、超声功率、快
速搅拌时间等;以苯酚和双酚 A、双酚 A 和邻氯酚为目标污染物,分别研究了
各因素对超声/零价铁、超声/过氧化氢降解水中有机微污染物的影响,其中包括
超声作用时间、超声功率、目标污染物的初始浓度和初始 pH 值等。
本文研究结果表明:超声波和快速搅拌同时作用时,当超声作用时间为 45s、
超声功率为 200~300w、快速搅拌时间为 100s 时,经过混凝沉淀处理后,出水
残余铝浓度最低;超声波和快速搅拌不同时作用时,当超声作用时间为 30s、快
速搅拌时间为 100s、超声功率为 250w 时,出水残余铝含量最低。超声/零价铁
体系、超声/过氧化氢体系在降解目标污染物时,均具有显著的协同作用,在 0~
400w 的超声功率下,超声功率越大,目标污染物的去除率越大;低的初始浓度
有利于目标污染物的降解,且酸性条件下的降解效果远远好于碱性条件。在超声
/零价铁体系处理苯酚和双酚 A 时,零价铁的最佳投加量均为 ;超声/过氧
化氢体系在分别处理双酚 A 和邻氯酚时,过氧化氢的最佳投加量分别为 150mg/L
和 60mg/L。超声/零价铁体系和超声/过氧化氢体系对目标污染物的降解符合一级
动力学反应。
综合研究结果表明,超声波能够降低出水残余铝的含量,同时对水中有机微
污染物有较好的去除作用。
关键词:超声波,残余铝,零价铁,过氧化氢,有机微污染物
I
Master Dissertation of Suzhou University of Science and Technology Abstract
Abstract
In this article, ultrasonic enhanced coagulation to reduce the residual aluminum in
drinking water and degradation anic micro-pollutants by ultrasonic / zero-valent
0
iron(US/Fe )or ultrasonic /H2O2(US/ H2O2)were studied. For different ways of
joining the ultrasonic, the influence of many factors on reducing the residual
aluminum in drinking water were discussed, such as the ultrasonic time, ultrasonic
power, rapid mixing time and so on. In addition, the major effecting factors were
researched on degradation anic micro–pollutants in the US/Fe0 using target
pollutants which is phenol and bisphenol A as well as in the US/ H2O2 using
bisphenol A and o-chlorophenol as target pollutants, respectively, which include the
ultrasonic time, ultrasonic power, the initial concentration of the target pollutants and
the initial pH value.
The study results indicated that, for ultrasonic and the rapid stirring playing the
role at the same time, the best experiment conditions of reducing the residual
aluminum in drinking water were got. The ultrasonic time was 45s, the ultrasonic
power was 200-300w and the rapid mixing time was