本文關(guān)鍵詞：催化氧化降解工業(yè)廢水的催化劑和工程應(yīng)用研究　出處：《中南民族大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高級(jí)氧化技術(shù)(AOTs) 催化劑 芬頓 臭氧氧化 錳渣 工業(yè)廢水

【摘要】：如何經(jīng)濟(jì)高效的對(duì)環(huán)境污染的治理是環(huán)境保護(hù)的一項(xiàng)重大任務(wù)。在高級(jí)氧化技術(shù)中使用性能穩(wěn)定高效的催化劑可以顯著地降低成本和提高效率,因此對(duì)催化劑的研究與篩選具有重要的現(xiàn)實(shí)意義。基于此本文對(duì)利于磁性分離的芬頓催化劑的應(yīng)用進(jìn)行了研究。電解錳渣是一種污染嚴(yán)重的固體廢棄物,然而錳渣中部分活性成分對(duì)臭氧氧化具有催化效果�；谝詮U治廢、資源化利用,本文對(duì)電解錳渣制成臭氧催化劑及應(yīng)用到工業(yè)廢水的處理進(jìn)行了研究。本文第一章介紹了工業(yè)廢水現(xiàn)狀、高級(jí)氧化技術(shù)、電解錳渣的現(xiàn)狀,并對(duì)本課題的研究目的、意義和內(nèi)容進(jìn)行了闡述。第二章闡述了鐵摻雜的有序介孔碳(OMC@Fe)、碳包覆四氧化三鐵(C@Fe3O4)、磁性氧化石墨烯(MGO)三種磁性碳復(fù)合材料的制備,以及利用XRD、TEM、TG等分析檢測(cè)手段對(duì)材料進(jìn)行了表征。三種磁性碳復(fù)合材料對(duì)4-CP模擬污染物進(jìn)行了吸附,結(jié)果表明其吸附動(dòng)力學(xué)過(guò)程更符合Lagergren準(zhǔn)二級(jí)動(dòng)力學(xué)模型,吸附等溫線更符合Freundlich等溫線模型,三種磁性碳復(fù)合材料吸附能力由強(qiáng)到弱分別為:C@Fe3O4OMC@FeMGO。同時(shí)以酸性橙為模擬污染物,對(duì)材料的芬頓反應(yīng)催化性能進(jìn)行了研究。在OMC@Fe類芬頓降解酸性橙過(guò)程中通過(guò)正交實(shí)驗(yàn)得出在考察范圍內(nèi)對(duì)反應(yīng)的影響顯著性排序從強(qiáng)到弱依次為:pH、H2O2濃度、催化劑濃度。此外,光照在一定程度下可以提高芬頓反應(yīng)的降解效果,在一定程度內(nèi)通過(guò)升高溫度還可以降低pH對(duì)反應(yīng)限制。OMC@Fe作為類芬頓降解酸性橙的催化劑具有較好的穩(wěn)定性能,且能夠循環(huán)利用。C@Fe3O4類芬頓降解酸性橙的過(guò)程可以進(jìn)一步證實(shí)在一定程度內(nèi)通過(guò)升高溫度可以降低pH對(duì)反應(yīng)限制的結(jié)論。C@Fe3O4具有磁性,便于材料的回收與重復(fù)利用。在第三章中,先以電解錳渣為載體制備出電解錳渣載錳催化劑,再研究其在臭氧催化氧化工藝中對(duì)X3B的降解。實(shí)驗(yàn)確定在高錳酸鉀濃度為0.05 mol·L-1、吸附時(shí)間為24h、煅燒溫度為400℃的條件下制備出的電解錳渣載錳催化劑在實(shí)驗(yàn)考察范圍內(nèi)表現(xiàn)出最高活性。電解錳渣載錳催化劑催化臭氧化較單純臭氧化污染物X3B具有優(yōu)勢(shì),電解錳渣載錳催化劑具有較好的穩(wěn)定性能,機(jī)理探究發(fā)現(xiàn)催化產(chǎn)生的羥基自由基和體系臭氧是去除污染物的活性物種之一。此外,通過(guò)對(duì)不同反應(yīng)裝置的反應(yīng)效果進(jìn)行對(duì)比,可以發(fā)現(xiàn)柱式反應(yīng)裝置具有更快的反應(yīng)速度。第四章是關(guān)于臭氧催化氧化技術(shù)工程實(shí)踐。該部分對(duì)XX化工園污水處理廠現(xiàn)場(chǎng)數(shù)據(jù)進(jìn)行了采集與分析,得出該臭氧氧化工藝對(duì)廢水可生化性的提高具有貢獻(xiàn)。結(jié)合實(shí)際情況通過(guò)小試,選出二氧化錳作為催化劑,可明顯增強(qiáng)處理效果。
[Abstract]:How to manage the environmental pollution economically and efficiently is a major task of environmental protection. The use of stable and efficient catalysts in advanced oxidation technology can significantly reduce costs and improve efficiency, so it has important practical significance for the research and screening of catalysts. Based on this paper, the application of Fenton catalyst for magnetic separation was studied. The electrolytic manganese slag is a kind of solid waste with serious pollution. However, some active components in the manganese slag have a catalytic effect on ozone oxidation. Based on waste treatment and resource utilization, the ozone catalyst for electrolytic manganese slag and the treatment of industrial waste water are studied in this paper. In the first chapter, the status of industrial wastewater, advanced oxidation technology and the status of electrolytic manganese slag are introduced. The purpose, significance and content of this project are also discussed. The second chapter describes the preparation of iron doped ordered mesoporous carbon (OMC@Fe), carbon coated iron oxide (C@Fe3O4) and magnetic oxide graphene (MGO) three kinds of magnetic carbon composites, and XRD, TEM, TG and other analytical methods to characterize the materials. Three kinds of magnetic carbon composite materials for the adsorption of 4-CP on simulated pollutants, the results showed that the adsorption kinetics accord with the quasi two level dynamic model of Lagergren, the adsorption isotherm is more in line with the Freundlich isotherm model, three kinds of magnetic carbon composites adsorption capacity from strong to weak respectively: C@Fe3O4OMC@FeMGO. At the same time, acid orange was used as a simulated pollutant, and the catalytic performance of Fenton reaction was studied. In the process of OMC@Fe type Fenton degradation of acid orange, the effect of reaction on the reaction was determined by orthogonal test. The order was from strong to weak in order of pH, H2O2 concentration and catalyst concentration. In addition, light can improve the degradation effect of Fenton reaction to a certain extent. In a certain degree, the reaction limit can be reduced by increasing the temperature by increasing the temperature of the Fenton. OMC@Fe as a Fenton like catalyst for the degradation of acid orange has good stability and can be recycled. The process of degradation of Acid Orange by Fenton type C@Fe3O4 can further confirm that in a certain degree, the conclusion that the reaction limit can be reduced by pH can be reduced by increasing the temperature. C@Fe3O4 has magnetic properties, which is convenient for recycling and reuse of materials. In the third chapter, the electrolytic manganese slag as the carrier was used as the carrier to prepare the manganese slag carrying manganese catalyst, and the degradation of X3B in the ozone catalytic oxidation process was studied. Potassium Permanganate in the experiment to determine the concentration of 0.05 mol L-1, adsorption time of electrolytic manganese slag preparation conditions of 24h, calcination temperature of 400 DEG C under the load of manganese catalyst shows the highest activity under the experimental conditions. Electrolytic manganese slag supported manganese catalyst for ozonation is superior to pure ozonization pollutant X3B. Electrolytic manganese slag supported manganese catalyst has better stability. Mechanism research shows that hydroxyl radicals and system ozone are one of the active species to remove pollutants. In addition, through the comparison of the reaction effects of different reaction devices, it is found that the column reactor has a faster reaction speed. The fourth chapter is about the technical engineering practice of ozone catalytic oxidation. In this part, the field data of XX chemical garden sewage treatment plant were collected and analyzed, and it was concluded that the ozone oxidation process could contribute to the improvement of wastewater biodegradability. In combination with the actual situation, manganese dioxide is selected as a catalyst through a small test, which can obviously enhance the treatment effect.
【學(xué)位授予單位】：中南民族大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X703;O643.36
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本文編號(hào)：1343258