臭氧组合工艺对饮用水中消毒副产物及溴酸的控制研究

发布时间：2018-07-25 18:55

【摘要】：随着社会经济的高速发展,黄浦江下游段水源污染日益加剧,严重威胁饮用水安全。上海某水厂采用常规工艺处理该水源已难以满足国家水质标准的变化,由此消毒过程中THMs、HAAs等DBPs超标的现象时有发生。因此有必要研究和引入深度处理技术来获得优质饮用水。本文对黄浦江下游段水源及中试砂滤出水水质进行了综合评价,系统研究了O3-BAC及O3/H2O2-BAC两种组合工艺对砂滤出水的处理效果,得出以下结论： 2010年下半年度原水DOC月平均值为4.90-531mg/L。由于传统前处理工艺对DBPs前驱物的去除能力有限,致使滤后水DBPFP浓度范围高达250-330μg/L；通过连续半年的中试试验发现臭氧组合工艺对于滤后水中有机污染物及DBPs前驱物去除效果良好。其中03=2.0mg/L为O3-BAC工艺的最佳试验条件,炭后出水中DOC、UV254、THMFP及HAA5FP去除率分别为41%、64%、36%和47%；而O3/H2O2-BAC工艺在提升DBPFP去除率的同时又对溴酸生成量进行了有效控制,反应出水中溴酸浓度基本维持在1-2μg/L左右。其中O3=2.0mg/L, H2O2/O3=0.5为该工艺最佳试验条件,炭后出水中DOC、UV254、THMFP及HAA5FP去除率分别为52%、70%、51%和55%。根据中试试验结果,O3/H2O2-BAC工艺的处理效果整体优于O3-BAC工艺,并最终确定O3=2.0mg/L, H2O2/O3=0.5为臭氧组合工艺对黄浦江下游水源深度处理的最佳工艺条件。
[Abstract]:With the rapid development of social economy, the pollution of water in the lower reaches of Huangpu River is becoming more and more serious, which seriously threatens the safety of drinking water. It is difficult to meet the change of national water quality standard by using conventional process to treat the water source in a water works in Shanghai. Thus, the phenomenon of DBPs exceeding the standard such as THMsHas and so on occurs frequently in the process of disinfection. Therefore, it is necessary to study and introduce advanced treatment technology to obtain high quality drinking water. In this paper, the comprehensive evaluation of the water source and the effluent quality of the pilot sand filter in the lower reaches of Huangpu River is carried out, and the treatment effect of the two combined processes of O3-BAC and O3/H2O2-BAC on the sand filtration water is studied systematically. The results are as follows: the average monthly DOC of raw water in the second half of 2010 is 4.90-531 mg / L. Because of the limited removal ability of DBPs precursor by the traditional pretreatment process, the concentration range of DBPFP in filtered water is as high as 250 ~ 330 渭 g / L; It was found that the combined ozone process had a good effect on removing organic pollutants and DBPs precursors in filtered water. 03=2.0mg/L is the best test condition for O3-BAC process, and the removal rates of HAA5FP and DOC UV254THMFP are 41% and 47%, respectively, while O3/H2O2-BAC process can effectively control the amount of bromate while increasing the removal rate of DBPFP. The concentration of bromic acid in water was about 1-2 渭 g / L. Among them, 2.0 mg / L of O _ 3N, H2O2/O3=0.5 is the best test condition. The removal rates of H2O2/O3=0.5 and HAA5FP are 52.1% and 55.1%, respectively. According to the results of pilot test, the treatment effect of O _ 3 / H _ 2O _ 2-BAC process is better than that of O3-BAC process. Finally, it is determined that O _ 3N _ 2O _ 2 mg / L and H2O2/O3=0.5 are the best process conditions for advanced treatment of water source in the lower reaches of Huangpu River by ozone combination process.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R123.1

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