文档介绍：湘潭大学
硕士学位论文
旋转泡沫分离法综合处理石化类氨氮废水的实验研究
姓名:罗四顺
申请学位级别:硕士
专业:化学工程
指导教师:周大军
20081201
摘要
本文首先采用氨吹脱法对石化类氨氮废水的处理工艺进行了研究,具体考察
了废水的pH值、吹脱气液比、吹脱温度、吹脱时间等因素对处理效果的影响,
然后通过正交试验对工艺条件进行了优化。其次采用化学沉淀法对石化类氨氮废
水的处理工艺进行了研究,具体考察了废水的pH值、Na2HPO4·12H2O的投加量和
MgCl2·6H2O的投加量等因素对处理效果的影响,然后通过正交试验对工艺条件
进行优化。最后采用二氧化氯-旋转泡沫分离法对石化类氨氮废水的处理工艺进
行了研究,通过实验分析了相关影响因素:pH值、二氧化氯投加浓度和处理时
间对处理效果的影响,并通过正交试验得出了最佳工艺条件。通过三种处理工艺
的对比,二氧化氯-旋转泡沫分离法是一种新型、高效的处理石化类氨氮废水技
术。二氧化氯-旋转泡沫分离法处理石化类氨氮废水的最佳工艺条件:反应体系
的pH值为10,每升废液中二氧化氯的投加量为5mg/1000CODcr,反应时间为180
分钟。在此最佳工艺条件下对石化类氨氮废水进行了多次平行试验,结果为:水
% ,% ,效果均高于传统
技术的最佳试验结果。

关键词:二氧化氯;旋转泡沫分离;氨氮

3
Abstract
In this paper, first of all, air stripping was studied to deal with waste water
with ammonia nitrogen in petrochemical sector. Many concretly works relating to
removal effect have been studied including the pH of waste water, ratio between
the gas and the liquid, temperature and time of air stripping, then, orthogonal
design s were carried out to get the optimal conditions. Secondly,
chemical precipitation method was adoptted to treating the same waste water.
Some factors relating to removal effect such as the pH of waste water, dose of
Na2HPO4·12H2O and MgCl2·6H2O are mainly assessed, meanwhile, orthogonal
design s were carried out to get the optimal conditions. At last,
chlorine dioxide eddy foam separation process was investigated carefully. Many
correlative parameters which have influences on treating effect involve pH, the
dose of chlorine dioxide and action time were studied. The treating conditions
were optimized by orthogonal design with the goal of maximizing trating
efficiency. The research showed that the chlorine dioxide eddy foam separation
process is a new and highly efficient method for treating waste water with high
percentage of ammonia nitrogen in petrochemical optimum removal
parameters:pH=10,the dose of chlorin