【作者】 朱晓辉；

【导师】 李德生；

【作者基本信息】 兰州交通大学 ， 市政工程， 2007， 硕士

【摘要】 目前，我国大多数城市的水源水水质污染有逐步加剧和恶化的趋势，而使用常规的处理工艺往往达不到理想的处理效果。因此，对水源水进行深度处理以满足当今及日后的需求势在必行。近年来，东莞市的综合实力迅速提高。同时，东莞市供水行业也得到了快速发展，其中既有提高也存在着不足。作为一个经济高速发展的城市，面对如此高速的经济发展速度，东莞市供水行业应与时俱进，把握机遇，努力实现城市供水水平的全面提高。因此，研究供水技术集成系统，建立完善的供水安全保障体系是东莞市供水发展的必然趋势，也是提高居民生活质量的客观要求和实现城市建设远景规划的迫切任务。本课题得到建设部2006年科学技术项目计划（06-K4-18）的项目支持，同时得到清华大学和东莞市东江水务有限公司的技术和资金支持。本文运用臭氧-活性炭工艺对东江水（东莞市水源水）进行深度处理，较系统的研究了臭氧-活性炭工艺处理微污染水源水及处理效果。试验结果包括以下内容：1．最佳臭氧投加量的确定。针对东江水水质的臭氧投加量确定为1.5 mg／L。在此条件下，相应水质指标能有效去除，对COD_Mn的去除率为52％～69％；氨氮的去除率为55％～77％；TOC的去除率为48％～68％；UV₂₅₄的去除率为70％～95％，且出水水质优于《城市供水水质标准》（CJ／T 206—2005）；2．臭氧-活性炭工艺能有效保障出水的安全性。能有效去除消毒副产物的前体物，从而降低了后续工艺消毒副产物的生成量，进一步提高了饮用水的安全性。该工艺对进水中三卤甲烷生成潜能（THMFP）的去除率平均为42％；同时能有效的控制臭氧化副产物甲醛和溴酸盐，完全达到并优于相关国家标准标准，能充分保证饮用水的安全；其次，该工艺能有效控制生物可同化有机碳（AOC），对AOC的平均去除率为25.2％。从而保持管网生物稳定性，进一步保障用户用水的水质；通过对相应水样的致突变性进行Ames试验。结果为阴性，表明经臭氧-活性炭处理后，不会增加其致突变性的风险。出水完全达标。3．通过GC／MS分析、确定东江水中的致嗅物质，并以乙硫醇为代表研究工艺对其的去除效果。臭氧-活性炭工艺对乙硫醇的去除率平均为74.8％，结果表明：臭氧-活性炭能有效去除东江水中的致嗅物质，保证出水感官指标达标。试验结果表明，采用臭氧-活性炭工艺对东江水进行深度处理，能进一步提高水质，确保饮用水安全。所以对东江水采用臭氧-活性炭深度处理工艺是可行的。并可以将本工艺应用推广到类似的南方水体。更多还原

【Abstract】 Currently, the majority of city’s water source pollution in China has exacerbates trend,and the use of conventional treatment process is often not satisfied the effect. Therefore,advanced treatment to meet the current and future requirements is imperative.In recent years, Dongguan City’s comprehensive strength grows rapidly. Meanwhile,Dongguan City water supply industry has been developing rapidly, but both shortcomingsexist. Dongguan, as a rapid economic developed city, in the face of such rapid pace ofeconomic development, its water industry should advance with the times, and grasp theopportunity to make the urban water level increased. Therefore, to study the water technologyintegration system, establish and perfect the system of water supply security of DongguanCity water is a natural trend, also is a urgent task to improve the quality of residents’ life andto achieve long-term urban development planning.The subject is the project of Ministry of Construction in 2006 （06-K4-18）. Andmeanwhile gets the technology and money support of Tsinghua university and DongjiangWater affairs Co.Ltd..This project treats the water of Dongjiang River（Dongguan city watersource） through O₃-GAC technology for advanced treatment. Through the equipment, itstudies the treatment technology of O₃-GAC to contaminated water and its effect. The resultsinclude the following aspects:First, the best ozone dosage determination, the ozone dosage is 1.5 mg/L for Dongjiangwater. And it has the effective removal to the corresponding water quality indicators. Theremoval rate of COD_Mn is 52%～69%; The removal rate of TOC is 48%～68%; Theremoval rate of UV₂₅₄ is 70%～95%; The removal rate of ammonia is 55%～77%.Second, the O₃-GAC process could asure the safty of the water, and effectively removedisinfection by-product precursors, thereby, reduces the disinfection by-product’s amount ofthe follow-up process, and further improves the safety of drinking water. The averageremoval rate is 42% to the THMFP of the influent in this process. The O₃-GAC technologycan effectively control ozone by-product （Formaldehyde and Bromate）. and achieve bettereffect than relevant national standards, fully guarantee the safety of drinking water. The processcan significantly reduce the AOC. The average removal rate of AOC is 25.2%. Thereby, itmaintains network biological stability, and guarantees furtherly the water quality. The result ofthe test of Ames is negative. This indicates that the water treated by the O₃-GAC, will notincrease its risk of mutagenicity. The quality of effluent completely fulfills the standers.Third, through GC/MS analysis, it determines the olfactory substances in Dongjiangwater, and studis their removal rate of the process in the representatives of Ethanethiol. Theresults shows: O₃-GAC process could effectively remove olfactory substances in Dongjiangwater to ensure the sensory indicators standard of the effluent.The results show that the O₃-GAC process for the advance treatment can improve the water quality and ensure the safety of drinking water. Therefore, the use of this technology foradvanced treatment to the Dongjiang water is feasible and neCessary. And the process can beextended to a similar application for the southern waters.更多还原