Cu-Co復(fù)合材料超聲催化處理三元復(fù)合驅(qū)采油廢水效能研究
發(fā)布時(shí)間：2019-03-07 09:20
【摘要】：在能源競(jìng)爭(zhēng)激烈的時(shí)代,石油是一個(gè)國(guó)家發(fā)展至關(guān)重要的資源。近年來為提高我國(guó)油田石油的采收率,石油業(yè)大力推廣三次采油技術(shù),導(dǎo)致大量三元復(fù)合驅(qū)采油廢水產(chǎn)生,造成了嚴(yán)峻的環(huán)境問題。為了解決傳統(tǒng)工藝處理三元復(fù)合驅(qū)采油廢水效率低下以及粘度去除效果差等問題。本課題探究一種高效,快速,清潔的三元復(fù)合驅(qū)廢水處理方法,能夠有效去除廢水中的粘度,最終使其達(dá)到企業(yè)廢水回用標(biāo)準(zhǔn)。本文以大慶某采油公司三元復(fù)合驅(qū)廢水為研究對(duì)象,構(gòu)建一種新型的石油三元復(fù)合驅(qū)油區(qū)廢水處理工藝。研究Cu-Co復(fù)合材料超聲催化降解聚丙烯酰胺配制廢水的效果以及處理實(shí)際三元復(fù)合驅(qū)油廢水的最優(yōu)條件。同時(shí)對(duì)反應(yīng)的動(dòng)力學(xué)和機(jī)理進(jìn)行簡(jiǎn)單探討。采用化學(xué)共沉淀法制備Cu-Co復(fù)合材料催化劑,優(yōu)化催化劑的制備條件,當(dāng)催化劑n(Cu)/n(Co)為1:1,沉淀劑Na OH的濃度為3 mol/L時(shí)催化劑粘度去除效果最佳。通過BET、XPS、SEM等手段對(duì)催化劑性質(zhì)和形貌進(jìn)行分析,結(jié)果表明實(shí)驗(yàn)制得的催化劑比表面積為116.463 m2/g,平均孔徑3.399 nm。制得催化劑顆粒均勻,屬于納米級(jí)催化劑,具有良好的催化性能。利用Cu-Co復(fù)合材料超聲催化處理聚丙烯酰胺配制廢水,采用單因素實(shí)驗(yàn)及正交實(shí)驗(yàn)優(yōu)化工藝參數(shù),最佳參數(shù)如下:反應(yīng)時(shí)間為30 min,超聲功率為300W,催化劑的投加量為0.20 g,H_2O_2濃度8 mmol/L,相應(yīng)的最優(yōu)去除率可達(dá)到88.7%,處理后的PAM配制廢水的粘度和水的粘度相當(dāng)。比較不同體系的氧化能力以及羥基自由基產(chǎn)量,US/H_2O_2/CAT體系中,由于催化劑以及H_2O_2的存在,反應(yīng)體系中形成非均相類芬頓體系,產(chǎn)生大量的羥基自由基,具有極強(qiáng)的氧化能力。通過UPLC驗(yàn)證了反應(yīng)體系中聚丙烯酰胺發(fā)生了降解反應(yīng),生成了新的物質(zhì),PAM發(fā)生斷鏈反應(yīng),其氧化產(chǎn)物是聚丙烯酰胺的低聚體以及丙烯酸。采用Cu-Co復(fù)合材料超聲催化處理實(shí)際三元復(fù)合驅(qū)廢水,發(fā)現(xiàn)本工藝對(duì)于實(shí)際廢水粘度的去除也具有較好的效果。利用紅外吸收光譜檢測(cè)反應(yīng)前后聚丙烯酰胺的變化,驗(yàn)證了聚丙烯酰胺在體系中發(fā)生了斷鏈反應(yīng)。使用GC-MS分析處理前后的實(shí)際廢水水樣,實(shí)驗(yàn)結(jié)果表明有機(jī)物被降解,生成了新物質(zhì)。本研究中的Cu-Co復(fù)合材料超聲催化工藝是一種新型的三元復(fù)合驅(qū)采油廢水處理技術(shù),處理效率高且綠色清潔,具有較好的應(yīng)用潛力。
[Abstract]:In the era of intense energy competition, oil is a vital resource for the development of a country. In recent years, in order to improve oil recovery in oil fields in China, tertiary oil recovery technology has been widely popularized in petroleum industry, resulting in a large number of ASP flooding wastewater, resulting in serious environmental problems. In order to solve the problems of low efficiency and poor viscosity removal of ASP flooding wastewater treated by traditional process. In this paper, an efficient, fast and clean three-way compound flooding wastewater treatment method is explored, which can effectively remove the viscosity of wastewater and finally meet the reuse standard of enterprise wastewater. In this paper, a new wastewater treatment process for ASP flooding area of Daqing oil recovery company is constructed. The wastewater of ASP flooding area is taken as the research object, and a new type of wastewater treatment process of ASP flooding area is constructed. The effect of ultrasonic catalytic degradation of polyacrylamide compound wastewater with Cu-Co composites and the optimum conditions for treating practical ternary compound oil flooding wastewater were studied. At the same time, the kinetics and mechanism of the reaction were simply discussed. The Cu-Co composite catalyst was prepared by chemical coprecipitation method. The best removal efficiency of the catalyst viscosity was obtained when the catalyst n (Cu) / n (Co) was 1 渭 1 and the concentration of precipitator Na OH was 3 mol/L. The properties and morphology of the catalyst were analyzed by BET,XPS,SEM and other methods. The results showed that the specific surface area of the catalyst was 116.463 m2 / g, and the average pore size of the catalyst was 3.399 nm.. The catalyst particles are uniform and belong to nano-scale catalyst, which has good catalytic performance. Cu-Co composite was used to treat polyacrylamide wastewater by ultrasonic catalysis. The optimum parameters were optimized by single factor experiment and orthogonal experiment. The optimum parameters were as follows: the reaction time was 30 min, ultrasonic power was 300W, the reaction time was 30 min, the ultrasonic power was 300W, When the dosage of catalyst is 0.20 g, the optimum removal rate of 8 mmol/L, can reach 88.7%. The viscosity of treated PAM wastewater is equal to that of water. The oxidation ability of different systems and the production of hydroxyl radical were compared. In US/H_2O_2/CAT system, due to the presence of catalyst and H_2O_2, heterogeneous Fenton-like system was formed in the reaction system, and a large number of hydroxyl radicals were produced in the reaction system. Have very strong oxidation ability. The degradation reaction of polyacrylamide in the reaction system was confirmed by UPLC, and a new substance was formed. The chain breaking reaction of PAM was carried out. The oxidation product was oligomer of polyacrylamide and acrylic acid. The ultrasonic catalysis of Cu-Co composite was used to treat the real ternary flooding wastewater. It was found that the process also had a good effect on the removal of the viscosity of the actual wastewater. The change of polyacrylamide before and after the reaction was detected by infrared absorption spectrum, and the chain breaking reaction of polyacrylamide in the system was verified. GC-MS was used to analyze the actual wastewater samples before and after treatment. The experimental results showed that the organic matter was degraded and a new substance was formed. In this study, Cu-Co composite ultrasonic catalytic process is a new type of ASP flooding wastewater treatment technology, high efficiency and green clean, has a good application potential.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X741
本文編號(hào)：2435983
[Abstract]:In the era of intense energy competition, oil is a vital resource for the development of a country. In recent years, in order to improve oil recovery in oil fields in China, tertiary oil recovery technology has been widely popularized in petroleum industry, resulting in a large number of ASP flooding wastewater, resulting in serious environmental problems. In order to solve the problems of low efficiency and poor viscosity removal of ASP flooding wastewater treated by traditional process. In this paper, an efficient, fast and clean three-way compound flooding wastewater treatment method is explored, which can effectively remove the viscosity of wastewater and finally meet the reuse standard of enterprise wastewater. In this paper, a new wastewater treatment process for ASP flooding area of Daqing oil recovery company is constructed. The wastewater of ASP flooding area is taken as the research object, and a new type of wastewater treatment process of ASP flooding area is constructed. The effect of ultrasonic catalytic degradation of polyacrylamide compound wastewater with Cu-Co composites and the optimum conditions for treating practical ternary compound oil flooding wastewater were studied. At the same time, the kinetics and mechanism of the reaction were simply discussed. The Cu-Co composite catalyst was prepared by chemical coprecipitation method. The best removal efficiency of the catalyst viscosity was obtained when the catalyst n (Cu) / n (Co) was 1 渭 1 and the concentration of precipitator Na OH was 3 mol/L. The properties and morphology of the catalyst were analyzed by BET,XPS,SEM and other methods. The results showed that the specific surface area of the catalyst was 116.463 m2 / g, and the average pore size of the catalyst was 3.399 nm.. The catalyst particles are uniform and belong to nano-scale catalyst, which has good catalytic performance. Cu-Co composite was used to treat polyacrylamide wastewater by ultrasonic catalysis. The optimum parameters were optimized by single factor experiment and orthogonal experiment. The optimum parameters were as follows: the reaction time was 30 min, ultrasonic power was 300W, the reaction time was 30 min, the ultrasonic power was 300W, When the dosage of catalyst is 0.20 g, the optimum removal rate of 8 mmol/L, can reach 88.7%. The viscosity of treated PAM wastewater is equal to that of water. The oxidation ability of different systems and the production of hydroxyl radical were compared. In US/H_2O_2/CAT system, due to the presence of catalyst and H_2O_2, heterogeneous Fenton-like system was formed in the reaction system, and a large number of hydroxyl radicals were produced in the reaction system. Have very strong oxidation ability. The degradation reaction of polyacrylamide in the reaction system was confirmed by UPLC, and a new substance was formed. The chain breaking reaction of PAM was carried out. The oxidation product was oligomer of polyacrylamide and acrylic acid. The ultrasonic catalysis of Cu-Co composite was used to treat the real ternary flooding wastewater. It was found that the process also had a good effect on the removal of the viscosity of the actual wastewater. The change of polyacrylamide before and after the reaction was detected by infrared absorption spectrum, and the chain breaking reaction of polyacrylamide in the system was verified. GC-MS was used to analyze the actual wastewater samples before and after treatment. The experimental results showed that the organic matter was degraded and a new substance was formed. In this study, Cu-Co composite ultrasonic catalytic process is a new type of ASP flooding wastewater treatment technology, high efficiency and green clean, has a good application potential.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X741
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