微污染北江源水的深度处理工艺优选  

Selection of Advanced Treatment Processes for Micro-polluted Source Water from Beijiang River

作　　者：付乐[1] 陶涛[1] 曹国栋 杨文进 李树辉[1] 

机构地区：[1]华中科技大学环境科学与工程学院,湖北武汉430074 [2]佛山市水业集团公司,广东佛山528000 [3]中国市政工程中南设计研究院,湖北武汉430010

出　　处：《中国给水排水》2007年第1期84-87,共4页China Water & Wastewater

摘　　要：采用预氧化+常规处理+深度处理工艺对微污染北江源水进行了中试研究,考察了在预臭氧、预氯化和无预处理方式下,GAC和O3—BAC深度处理工艺的除污效果。结果表明:采用预臭氧氧化方式可大大改善常规处理工艺对CODMn、UV254的去除效果;在预臭氧氧化方式下,O3—BAC和GAC深度处理工艺均能在长时间内保持对有机物的高效去除,且前者的去除效果及其活性炭的使用周期均优于后者;活性炭吸附对氨氮无明显去除效果,而生物降解能较好地去除氨氮;预臭氧氧化能有效去除原水中的THMFP,但生成的CHC l3不能通过生物降解被去除,只能被活性炭所吸附,在活性炭吸附饱和后出水CHC l3浓度比进水的高;从长远角度考虑,对于北江源水,预臭氧+常规处理+O3—BAC是一种较优的组合工艺,它能够有效去除饮用水中的有毒、有害物质,并保障饮用水的安全性。The pilot-test applying preoxidation ＋ conventional water purification ＋ advanced treatment processes was conducted to treat micro-polluted source water from the Beijiang River. The removal effects of pollutants by the GAC and O3 - BAC treatment processes were investigated under the different preoxidation methods. The results show that the removal effects of CODM, and UV254 can be greatly improved by adjusting the preozonation settings. High-efficient removal of organic substances is shown for long periods of time by O3 - BAC and GAC methods. Furthermore, the removal effects of pollutants and the longevity of activated carbon in the O3 - BAC process is better than that of the GAC process. NH3 - N can not be removed by the adsorption of activated carbon, but the biodegradation can better remove NH3 -N. Preozonation can effectively remove THMFP in the raw water, and CHCl3 can not be removed by biodegradation. Activated carbon can adsorb CHCl3, but after saturation, the CHCl3 concentration of the effluent is higher than that of the influent. By comparison, the process of preozonation ＋ conventional water purification ＋ O3 - BAC is a preferable combined process for the Beijiang River＇ s source water. This can effectively remove the hazardous and toxic substances, and thus ensure the quality safety of drinking water.

关 键 词：北江水 深度处理 臭氧 活性炭 

分 类 号：TU991.2[建筑科学—市政工程]