【摘要】：甲基橙是一種具有代表性的偶氮染料,對(duì)生態(tài)環(huán)境危害大,難以運(yùn)用傳統(tǒng)方法將其降解,而水力空化與二氧化氯聯(lián)合作用可有效降解水溶液中甲基橙,是一種行之有效的新方法,對(duì)于偶氮染料廢水的處理具有指導(dǎo)意義。論文研制了水力空化裝置,以模擬甲基橙廢水為處理對(duì)象,研究了水力空化、二氧化氯分別單獨(dú)處理甲基橙溶液以及水力空化聯(lián)合二氧化氯處理甲基橙溶液的影響因素,對(duì)比分析了三種方法處理甲基橙的降解效果,并分析了水力空化聯(lián)合二氧化氯降解甲基橙的紫外-可見(jiàn)光譜圖,初步探究了該反應(yīng)的動(dòng)力學(xué)規(guī)律。本論文主要研究成果如下:(1)在溫度40℃,入口壓力0.4MPa,空化發(fā)生器為多孔板7(β=0.0684,交錯(cuò)布孔)時(shí),水力空化降解甲基橙的效果最好為13.5%;二氧化氯單獨(dú)降解甲基橙時(shí),較優(yōu)溫度范圍為30℃~35℃,甲基橙降解率隨著運(yùn)行時(shí)間的延長(zhǎng)和二氧化氯濃度(2mg/L~10mg/L)的增加而增加;在溫度35℃,入口壓力0.4MPa,二氧化氯濃度為8mg/L,選用多孔板7(β=0.0684,交錯(cuò)布孔)時(shí),水力空化聯(lián)合二氧化氯降解甲基橙的效果最好為82.8%。(2)水力空化聯(lián)合二氧化氯能有效的降解甲基橙,其降解效果是單獨(dú)水力空化作用(甲基橙降解率13.5%)的6倍,是單獨(dú)二氧化氯作用(甲基橙降解率38.6%)的2倍多。(3)水力空化聯(lián)合二氧化氯降解甲基橙的紫外-可見(jiàn)光譜圖變化表明,水力空化聯(lián)合二氧化氯可以降解甲基橙。(4)水力空化與二氧化氯聯(lián)合降解甲基橙的反應(yīng)符合一級(jí)動(dòng)力學(xué)規(guī)律,其表現(xiàn)速率常數(shù)為0.45×10-3 s-1,半衰期為26min。
[Abstract]:Methyl orange is a representative azo dye, which is very harmful to the ecological environment. It is difficult to degrade methyl orange in aqueous solution by traditional methods, and the combination of hydraulic cavitation and chlorine dioxide can effectively degrade methyl orange in aqueous solution. It is a new and effective method for the treatment of azo dye wastewater. In this paper, a hydraulic cavitation device was developed. The hydraulic cavitation, chlorine dioxide and hydraulic cavitation combined with chlorine dioxide were used to treat methyl orange solution separately and the influencing factors of hydraulic cavitation combined with chlorine dioxide treatment for methyl orange solution were studied. The degradation efficiency of methyl orange treated by three methods was compared and analyzed. The UV-Vis spectra of degradation of methyl orange by hydraulic cavitation combined with chlorine dioxide were analyzed, and the kinetic law of the reaction was preliminarily explored. The main results of this paper are as follows: (1) when the temperature is 40 鈩，

本文編號(hào)：2186798