本文關(guān)鍵詞： 水處理 消毒副產(chǎn)物 碘代三鹵甲烷 檢測方法 影響因素　出處：《長安大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：生活飲用水水質(zhì)的優(yōu)劣與人類健康密切相關(guān)。在水處理過程中，消毒劑在有效殺滅水中病原體、微生物的同時還會與水中的天然有機(jī)物產(chǎn)生多種對環(huán)境和人類健康有潛在危害的消毒副產(chǎn)物。目前，已經(jīng)檢測到的消毒副產(chǎn)物多達(dá)數(shù)百種，隨著研究的深入和檢測技術(shù)的改進(jìn)，越來越多的消毒副產(chǎn)物被發(fā)現(xiàn)。碘代類消毒副產(chǎn)物就是一種新興消毒副產(chǎn)物，相對于三氯甲烷、鹵乙酸等常規(guī)消毒副產(chǎn)物而言，因其具有更強(qiáng)的細(xì)胞毒性和遺傳特性而成為飲用水研究的新領(lǐng)域。 本論文開展了碘代三鹵甲烷的檢測分析方法研究，研究考察了消毒過程中反應(yīng)時間、加氯量、不同消毒劑投加順序和Br-:I-等因素對碘代類消毒副產(chǎn)物生成量的影響，調(diào)查了我國不同地域的水源水中三鹵甲烷和碘代類三鹵甲烷的生成水平，掌握碘代類消毒副產(chǎn)物與常規(guī)消毒副產(chǎn)物之間的關(guān)系。 對碘代類消毒副產(chǎn)物生成影響因素的研究表明，，氯在反應(yīng)前60min可以快速氧化水中碘離子生成次碘酸從而生成碘代三鹵甲烷；投氯量的變化對碘代三鹵甲烷的生成量影響較大，但對各組組分分布的影響較小，六種碘代三鹵甲烷副產(chǎn)物中二氯一碘甲烷檢出率最高；實驗證明碘離子濃度越高，生成碘代三鹵甲烷種類越多;總碘代三鹵甲烷的生成量隨著Br-:I-比值的增加而顯著下降;當(dāng)Cl2/N為3時，碘代三鹵甲烷的濃度被最大程度的抑制。 通過調(diào)查我國不同地域10個水源地碘代三鹵甲烷和三鹵甲烷的生成水平，結(jié)果表明，水樣中碘代三鹵甲烷生成勢濃度范圍為3.29-18.93ug/L，總?cè)u甲烷生成勢濃度范圍為9.1-105.4μg/L；三鹵甲烷消毒副產(chǎn)物中氯仿所占的比例最大，幾乎占總?cè)燃淄榈?0%以上；碘代類三鹵甲烷與總?cè)u甲烷生成勢的相關(guān)性較高，相關(guān)系數(shù)R2達(dá)0.8以上；原水中COD濃度越高，碘代三鹵甲烷生成量就越多。
[Abstract]:The quality of drinking water is closely related to human health. In the process of water treatment, disinfectants are effective in killing pathogens in water. Microbes can also produce a variety of disinfection by-products with natural organisms in water that have potential harm to the environment and human health. At present, hundreds of disinfection by-products have been detected. With the development of research and the improvement of detection technology, more and more disinfection by-products have been found. Iodinated disinfection by-products are a new disinfection by-product, relative to trichloromethane. Haloacetic acid and other conventional disinfection by-products have become a new research field of drinking water because of their stronger cytotoxicity and genetic characteristics. In this paper, the method of detection and analysis of trihalomethane iodide was studied, and the reaction time and the amount of chlorine added during disinfection were investigated. The effects of different disinfectant dosing order and Br-: I- on the yield of disinfection by-products of iodide species were investigated. The formation levels of trihalomethane and trihalomethane iodide in different regions of China were investigated. To understand the relationship between the disinfection by-products of iodide and the routine disinfection by-products. The study on the factors influencing the formation of disinfection by-products of iodide shows that chlorine can quickly oxidize iodine ions in water to form hypoiodic acid and then form trihalomethane iodide 60 min before reaction. The change of chlorine dosage had a great influence on the production of trihalomethane, but had little effect on the distribution of each component. The detection rate of dichloromethane was the highest among the six by-products of trihalomethane iodide. The higher the concentration of iodide ion, the more kinds of trihalomethane iodide are produced. The total amount of trihalomethane iodide decreased with the increase of the ratio of Br- to I-. When Cl2/N is 3:00, the concentration of trihalomethane iodide is inhibited to the greatest extent. The formation levels of trihalomethane and trihalomethane in 10 water sources in different regions of China were investigated. The formation potential concentration range of trihalomethane in water is 3.29-18.93ugr / L, and the concentration range of total trihalomethane formation potential is 9.1-105.4 渭 g / L. Chloroform accounted for more than 70% of total trichloromethane in the disinfection by-products of trihalomethane. The correlation between trihalomethane and the formation potential of total trihalomethane is high, and the correlation coefficient R2 is more than 0.8. The higher the concentration of COD in raw water, the greater the amount of trihalomethane iodide.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU991.25

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