本文選題：原水管道　切入點(diǎn)：溶解性有機(jī)物　出處：《化工學(xué)報(bào)》2015年06期 　論文類型：期刊論文

【摘要】：采用環(huán)狀反應(yīng)器模擬原水輸水管道,考察氯胺(NH2Cl)及其與二氧化氯聯(lián)用(NH2Cl/Cl O2)對溶解性有機(jī)物(DOM)、溶解性有機(jī)碳(DOC)和UV254降解以及有機(jī)物熒光特性的影響。結(jié)果表明:NH2Cl或NH2Cl/Cl O2對DOC、UV254和DOM的降解均產(chǎn)生較大的影響。相比NH2Cl,NH2Cl/Cl O2的影響更大,但是有機(jī)物降解的恢復(fù)速度沒有明顯差異,DOC、UV254和DOM的降解分別在停止投加氧化劑的第5 d、4 d和1 d恢復(fù)。投加氧化劑后,芳香族有機(jī)物以向易生物降解的極性有機(jī)物的轉(zhuǎn)化為主,溶解性有機(jī)物的可生物降解能力增加。NH2Cl和NH2Cl/Cl O2作用后,類蛋白質(zhì)物質(zhì)以及紫外區(qū)類腐殖質(zhì)類物質(zhì)明顯減少。NH2Cl/Cl O2更易破壞有機(jī)物中的芳香族化合物的結(jié)構(gòu),而NH2Cl氧化使得有機(jī)物分子結(jié)構(gòu)中羰基、羥基、羧基和胺基等官能團(tuán)增加,從而有機(jī)物可生物降解能力較強(qiáng)。NH2Cl和NH2Cl/Cl O2作用后,有機(jī)物降解作用可恢復(fù)至比未加氧化劑更高的水平,基于鹵代副產(chǎn)物生成的考慮,相比NH2Cl,NH2Cl/Cl O2更適合用于原水輸水管道的氧化。
[Abstract]:The annular reactor was used to simulate the raw water pipeline. The effects of chloramine (NH _ 2Cl _ 2Cl _ 2Cl _ 2) and its combination with chlorine dioxide on the degradation of dissolved organic matter (Dom), dissolved organic carbon (DOC) and UV254, and the fluorescence characteristics of organic matter were investigated. The results showed that the degradation of DOCU UV254 and DOM by NH2Cl/Cl O 2 or% NH 2Cl had a significant effect on the degradation of DOCU UV254 and DOM. The influence of NH _ 2Cl _ 2 / Cl _ 2 was greater than that of NH _ 2Cl _ 2 / Cl _ 2. However, there was no significant difference in the recovery rate of organic matter degradation. The degradation of DOM and UV254 recovered on the 5th day and 1 day after the addition of oxidant, respectively. After the addition of oxidant, the conversion of aromatic organic compounds to polar organic compounds that were easily biodegradable was the main factor. When the biodegradability of dissolved organic compounds increased with the action of .NH2Cl and NH2Cl/Cl O2, the protein-like substances and the ultraviolet humus-like substances decreased obviously. NH2Cl-p-ClO2 was more likely to destroy the structure of aromatic compounds in organic compounds. However, the oxidation of NH2Cl increased the functional groups such as carbonyl, hydroxyl, carboxyl and amines in the molecular structure of organic compounds, so that the biodegradability of organic compounds could be improved to a higher level than that without oxidant after the action of NH2Cl and NH2Cl/Cl O2. Considering the formation of halogenated by-products, NH2Cl-NH2Cl- / ClO2 is more suitable for the oxidation of raw water pipeline than NH2Cl-NH2Cl- / ClO2.
【作者單位】： 北京工業(yè)大學(xué)北京市水質(zhì)科學(xué)與水環(huán)境恢復(fù)工程重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(51178003) 北京市自然科學(xué)基金項(xiàng)目(8122013)~~
【分類號(hào)】：TU991.2

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本文編號(hào)：1562141