本文選題：聯(lián)用消毒劑 + 飲用水�。� 參考：《湖南大學(xué)》2015年碩士論文

【摘要】：消毒是保證飲用水質(zhì)量安全的重要環(huán)節(jié),傳統(tǒng)的氯消毒操作簡便,成本低廉,但其消毒過程中產(chǎn)生的消毒副產(chǎn)物降低了飲用水安全性,聯(lián)用消毒劑可以發(fā)揮單個消毒劑的優(yōu)點,減少其缺點,有良好的應(yīng)用前景。本試驗選用二氧化氯和氯、二氧化氯和氯胺、氯和氯胺三種聯(lián)用消毒劑,球墨鑄鐵管和PE管兩種常用管材,研究聯(lián)用消毒劑在不同管材中對水質(zhì)的影響。試驗所用原水為長沙市某水廠砂濾后水,在原水中定量投加消毒劑后,加入各管材的動態(tài)管和靜態(tài)管分別進行動態(tài)模擬試驗和靜態(tài)浸泡試驗,在試驗開始的1h、6h、12h、24h定時取樣,同時做主體水試驗(即燒杯試驗)作為對比。試驗結(jié)果表明:(1)聯(lián)用消毒劑中各消毒劑的衰減速率比單獨使用時低,不同管材水體中消耗消毒劑的物質(zhì)含量和水力條件不同,對消毒劑衰減的影響也不同,消毒劑衰減速率由大到小依次為:球墨鑄鐵管PE管主體水,同種管材中,動態(tài)靜態(tài)。(2)聯(lián)用消毒劑在控制消毒副產(chǎn)物方面優(yōu)于單獨消毒劑,以二氧化氯為主消毒劑的聯(lián)用消毒劑可有效控制CHCl_3的產(chǎn)生,同時減少無機消毒副產(chǎn)物ClO_2~-和ClO_3~-的產(chǎn)生量,氯和氯胺聯(lián)用消毒時產(chǎn)生的CHCl_3小于單獨氯消毒,管材的影響會使水中生成的消毒副產(chǎn)物增多,由高到低排序為:球墨鑄鐵管PE管主體水,動態(tài)管靜態(tài)管。(3)管網(wǎng)水的TOC都隨時間增長,主體水中TOC基本不變,同種管材中,動態(tài)管中TOC高于靜態(tài)管,且水中二氧化氯濃度越高,TOC含量越高,主要原因是二氧化氯對管壁的溶蝕作用較強,使水中TOC升高。(4)pH的變化主要和水中所含的氯和氯胺有關(guān),單獨二氧化氯消毒時水中p H基本不變;濁度和鐵含量的主要影響因素為水力沖刷作用;球墨鑄鐵管中溶解氧較原水有所下降,PE管和主體水無明顯變化。
[Abstract]:Disinfection is an important link to ensure the quality and safety of drinking water. The traditional chlorine disinfection is simple and inexpensive, but the disinfection by-products produced in the disinfection process reduce the safety of drinking water, and the combined use of disinfectants can play the advantages of single disinfectant. To reduce its shortcomings, it has a good application prospect. Two kinds of commonly used disinfectants, chlorine dioxide and chlorine dioxide, chlorine dioxide and chloramine, chlorine and chloramine, ductile iron pipe and PE tube, were used in this experiment to study the effect of combined disinfectant on water quality in different pipes. The raw water used in the test is sand filtered water from a water plant in Changsha. After the quantitative addition of disinfectant to the raw water, the dynamic simulation test and static immersion test of the dynamic and static tubes of each pipe are carried out, respectively, and the samples are sampled regularly at 1h, 6h, 12h, 12h, 24h, respectively. At the same time, the main water test (beaker test) as a comparison. The results showed that: (1) the decay rate of each disinfectant in the combined disinfectant was lower than that in the single disinfectant, and the content of the disinfectant and the hydraulic conditions of the disinfectant were different in the water of different pipes, and the effect on the attenuation of the disinfectant was also different. The decay rate of disinfectant is as follows: ductile iron pipe PE pipe main body water, in the same kind of pipe, dynamic and static. (2) the combined disinfectant is superior to the single disinfectant in controlling disinfection by-products. The combined disinfectant with chlorine dioxide as the main disinfectant can effectively control the production of CHClS3, and at the same time reduce the production of the inorganic disinfection by-products ClO2- and ClO3-, and the CHCl3 produced by the combined disinfection of chlorine and chloramine is lower than that produced by the disinfection of chlorine alone. The influence of pipe material will increase the disinfection by-products in water. The order from high to low is: ductile iron pipe PE pipe main water, dynamic pipe static pipe. (3) the TOC of pipe water increases with time, the main body water TOC is basically unchanged, in the same kind of pipe material, The TOC in the dynamic tube is higher than that in the static tube, and the higher the concentration of chlorine dioxide in the water is, the higher the content of TOC is. The main reason is that the dissolution of chlorine dioxide on the tube wall is stronger, which makes the TOC in the water increase. (4) the change of pH is mainly related to the chlorine and chloramine in the water. Water pH was basically unchanged when chlorine dioxide was disinfected alone, the main factors affecting turbidity and iron content were hydraulic scour, and the dissolved oxygen in ductile iron pipe was lower than that in raw water, and there was no obvious change in PE pipe and main body water.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TU991.2

【參考文獻】

相關(guān)期刊論文 前10條

1 張玲;劉書明;胡洪營;;塑料管材輸配水過程中有機物釋放規(guī)律研究[J];中國環(huán)境科學(xué);2014年06期

2 廖偉伶;;給水管道管材對水質(zhì)的影響及防腐措施[J];重慶工商大學(xué)學(xué)報(自然科學(xué)版);2012年11期

3 葉研;盛欣;朱志勤;陳斌生;劉玉敏;魏建榮;;輸配水管材對水中耗氧量的影響[J];首都公共衛(wèi)生;2012年05期

4 何濤;岳銀玲;凌波;張嵐;;輸水管材質(zhì)對二氧化氯飲用水消毒的影響研究[J];衛(wèi)生研究;2010年05期

5 付軍;滕曼;肖華;;不同管材對氯胺消毒副產(chǎn)物生成與水質(zhì)生物穩(wěn)定性的影響[J];中國環(huán)境科學(xué);2010年09期

6 易芳;吳立波;明亮;劉善培;王啟山;;二氧化氯、氯胺順序投加聯(lián)合消毒工藝的研究[J];中國給水排水;2010年07期

7 李亞峰;蔣白懿;趙洪賓;陶翠翠;;灰口鑄鐵給水管道內(nèi)壁腐蝕試驗[J];沈陽建筑大學(xué)學(xué)報(自然科學(xué)版);2010年02期

8 趙志領(lǐng);趙洪賓;何文杰;高金良;陰沛軍;李濤;;生長環(huán)作用下的給水管網(wǎng)水質(zhì)特征[J];哈爾濱商業(yè)大學(xué)學(xué)報(自然科學(xué)版);2008年05期

9 牛璋彬;王洋;張曉健;陳超;王生輝;;給水管網(wǎng)中鐵釋放現(xiàn)象的影響因素研究[J];環(huán)境科學(xué);2007年10期

10 牛璋彬;王洋;張曉健;何文杰;韓宏大;陰沛軍;;給水管網(wǎng)中管內(nèi)壁腐蝕管垢特征分析[J];環(huán)境科學(xué);2006年06期

相關(guān)博士學(xué)位論文 前2條

1 �？�;供水管網(wǎng)中氯和二氧化氯耦合反應(yīng)過程及其衰減模型研究[D];哈爾濱工業(yè)大學(xué);2011年

2 劉靜;飲用水組合氯化消毒工藝研究[D];清華大學(xué);2009年

相關(guān)碩士學(xué)位論文 前6條

1 黃源;T市供水管網(wǎng)濁度特性的研究及其風(fēng)險評估的應(yīng)用[D];哈爾濱工業(yè)大學(xué);2013年

2 高玖藜;供水管道鐵釋放現(xiàn)象影響因素研究[D];浙江大學(xué);2013年

3 楊s，

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