Fenton、Fenton-Microwave和臭氧高级氧化法处理生活垃圾渗滤液的研究
|
摘要
目前70%以上的城市生活垃圾被直接填埋,如果不能及时有效无害化处理垃圾渗滤液,将导致污染环境。采用Fenton,Fenton-Microwave和臭氧的高级氧化法处理生活垃圾渗滤液,研究了不同微波功率、pH值、H_2O_2和Fe~(2+)物质的量比、臭氧浓度等条件对垃圾渗滤液化学需氧量(COD_(cr))降解率的影响。结果表明Fenton法在pH值为3,H_2O_2和Fe~(2+)物质的量比为3,反应时间90 min条件下垃圾渗滤液(COD_(cr))降解率为52.32%,Fenton-Microwave法在pH值为5,H_2O_2和Fe~(2+)物质的量比3,微波功率为420W,微波辐射下反应时间6min条件下垃圾渗滤液COD_(cr)降解率为61.74%,臭氧氧化法在pH值为8,臭氧速度为30mg/min,催化剂Fe~(2+)和COD_(cr)质量比为3最佳条件下垃圾渗滤液COD_(cr)降解率为48.30%。
At present,more than 70% of the municipal solid waste is directly landfilled,and the leachate produced by the direct landfill will cause environmental pollution if it is not effectively and timely treated harmless.In this work,the effects of microwave power,pH values,the molar ratio of H_2O_2 and Fe~(2+)and the dosage of O_3 on Chemical Oxygen Demand(COD_(cr))degradation rate of leachate were studied and compared by Fenton method,Fenton-Microwave method and O_3 oxidation method.The results show that the COD_(cr)degradation rate of the leachate is 52.32% by Fenton method under the optimum conditions of pH=3,the molar ratio of H_2O_2 and Fe~(2+)=3 and the reaction time of 90 min.The COD_(cr)degradation rate of the leachate is 61.74%by Fenton-Microwave method under the optimum conditions of pH=5,the molar ratio of H_2O_2 and Fe~(2+)=3,microwave power of 420 Wand microwave irradiation reaction time of 6 min.The COD_(cr)degradation rate of the leachate is up to 48.30% by O_3 oxidation method under the optimum conditions of pH=8 and the rate of O_3=30 mg/min.
At present,more than 70% of the municipal solid waste is directly landfilled,and the leachate produced by the direct landfill will cause environmental pollution if it is not effectively and timely treated harmless.In this work,the effects of microwave power,pH values,the molar ratio of H_2O_2 and Fe~(2+)and the dosage of O_3 on Chemical Oxygen Demand(COD_(cr))degradation rate of leachate were studied and compared by Fenton method,Fenton-Microwave method and O_3 oxidation method.The results show that the COD_(cr)degradation rate of the leachate is 52.32% by Fenton method under the optimum conditions of pH=3,the molar ratio of H_2O_2 and Fe~(2+)=3 and the reaction time of 90 min.The COD_(cr)degradation rate of the leachate is 61.74%by Fenton-Microwave method under the optimum conditions of pH=5,the molar ratio of H_2O_2 and Fe~(2+)=3,microwave power of 420 Wand microwave irradiation reaction time of 6 min.The COD_(cr)degradation rate of the leachate is up to 48.30% by O_3 oxidation method under the optimum conditions of pH=8 and the rate of O_3=30 mg/min.
引文
[1]Xiang X Y.Pathways and Application of Oxidative Degradation of Typical Organic Pollutants[D].Chongqing:Chongqing University,2013(in Chinese).(相欣奕.氧化技术降解典型有机污染物研究[D].重庆:重庆大学,2013.)
[2]Cui Y R,Wu Q,Zhang L L,et al.Study on the Change of Landfill Leachate Catalyzed by Ozonation[J].J Henan Norm Univ Nat Sci Ed,2015,43(6):65-69(in Chinese).(崔延瑞,吴青,张璐璐,等.催化臭氧氧化垃圾渗滤液水质变化的研究[J].河南师范大学学报(自然科学版),2015,43(6):65-69.)
[3]Wang J.Study on the Degradation of Landfill Leachate Simulated Waste Water by Catalytic Wet Air Oxidation[D].Changchun:Jilin University,2008(in Chinese).(王健.催化湿式氧化降解垃圾渗滤液模拟废水的研究[D].长春:吉林大学,2008.)
[4]Yang Z N,Wei W.Comparison Study of Oxidative Treatment of Concentrated Landfill Leachate by UV-Fenton,Fenton and O3[J].Chin J Environ Eng,2016,10(7):3 853-3 858(in Chinese).(杨振宁,卫威.UV-Fenton、Fenton和O3氧化法处理垃圾渗滤液反渗透膜浓缩液的对比研究[J].环境工程学报,2016,10(7):3 853-3 858.)
[5]Qin L L.Degradation of Refractory Organics in Landfill Leachate by Advanced Oxidation Technology Based on Fenton Reaction[D].Beijing:Beijing Jiaotong University,2015(in Chinese).(秦乐乐.基于芬顿原理的高级氧化技术去除垃圾渗滤液中难降解有机物的研究[D].北京:北京交通大学,2015.)
[6]Luo F,Wu G R,Hong Y Q.Method Verification in Laboratory of Water Wuality-determination of the Chemical Oxygen Demand-dichromate Method(HT828-2017)[J].J Green Sci Technol,2018,(14):81-82(in Chinese).(罗芳,伍国荣,洪雨晴.水质化学需氧量的测定重铬酸盐法HJ 828-2017的实验室方法验证[J].绿色科技,2018,(14):81-82.)
[7]Wang J,Chen Z H,Chen Z L,et al.Orthogonal Experiment on Treatment of Landfill Leachate by Catalytic Oxidation Under Microwave Radiation[J].Ecol Environ,2008,17(6):2 212-2 214(in Chinese).(王杰,程志辉,陈忠林,等.微波催化氧化法处理垃圾渗滤液的正交试验[J].生态环境,2008,17(6):2 212-2 214.)
[8]Yang S W.Study on Oxidation Degradation of Dye Wastewater and Landfill Leachate by Fe3+/Cu2+/H202 System[D].Changsha:Hunan Agricultural University,2007(in Chinese).(杨佘维.Fe3+/Cu2+/H2O2体系对染料废水和垃圾渗滤液的氧化降解研究[D].长沙:湖南农业大学,2007.)
[9]Wang J,Ma X P,Tang F D et al,.Study on Pretreatment of Landfill Leachate by Microwave-assisted Catalytic Oxidation Process[J].China Environ Sci,2011,31(7):1 166-1 170(in Chinese).(王杰,马溪平,唐凤德,等.微波催化氧化法预处理垃圾渗滤液的研究[J].中国环境科学,2011,31(7):1 166-1 170.)
[10]Jiang B J.Research for Absorption Degradation and Catalytic Oxidation Technology of Domestic Landfill Leachate[D].Harbin:Harbin Institute of Technology,2011(in Chinese).(蒋宝军.生活垃圾渗滤液吸附降解及催化氧化技术的研究[D].哈尔滨:哈尔滨工业大学,2011.)
[11]Feng X D,Liu F,Guo M M,et al.Ozonation of Landfill Leachate Treated by Biological Oxidation[J].Environ Pollut Control,2005,(5):387-388(in Chinese).(冯旭东,刘芳,郭明旻,等.垃圾渗滤液生物处理出水臭氧氧化的研究[J].环境污染与防治,2005,(5):387-388.)
[12]Liu W H,Ji M,Zhang X,et al.Catalytic Ozonation to Remove Refractory Organic Matter in Landfill Leachate[J].Environ Chem,2007,26(1):58-61(in Chinese).(刘卫华,季民,张昕,等.催化臭氧氧化去除垃圾渗滤液中难降解有机物的研究[J].环境化学,2007,26(1):58-61.)
[13]Asaithambi P,Sajjadi B,Aziz A R A,et al.Ozone(O3)and Sono(US)Based Advanced Oxidation Processes for the Removal of Color,COD and Determination of Electrical Energy from Landfill Leachate[J].Sep Purif Technol,2017,172:442-449.
[14]Bethi B,Sonawane S H,Bhanvase B A,et al.Nanomaterials based Advanced Oxidation Processes for Waste Water Treatment:A review[J].Chem Eng Process,2016,109:178-189.
[15]Serpone N,Horikoshi S,Emeline A V.Microwaves in Advanced Oxidation Processes for Environmental Applications.A Brief Review[J].J Photochem Photobiol C,2010,11(2):114-131.
[16]Yang S,Wang P,Yang X,et al.A Novel Advanced Oxidation Process to Degrade Organic Pollutants in Wastewater:Microwave-activated Persulfate Oxidation[J].J Environ Sci,2009,21(9):1 175-1 180.
[2]Cui Y R,Wu Q,Zhang L L,et al.Study on the Change of Landfill Leachate Catalyzed by Ozonation[J].J Henan Norm Univ Nat Sci Ed,2015,43(6):65-69(in Chinese).(崔延瑞,吴青,张璐璐,等.催化臭氧氧化垃圾渗滤液水质变化的研究[J].河南师范大学学报(自然科学版),2015,43(6):65-69.)
[3]Wang J.Study on the Degradation of Landfill Leachate Simulated Waste Water by Catalytic Wet Air Oxidation[D].Changchun:Jilin University,2008(in Chinese).(王健.催化湿式氧化降解垃圾渗滤液模拟废水的研究[D].长春:吉林大学,2008.)
[4]Yang Z N,Wei W.Comparison Study of Oxidative Treatment of Concentrated Landfill Leachate by UV-Fenton,Fenton and O3[J].Chin J Environ Eng,2016,10(7):3 853-3 858(in Chinese).(杨振宁,卫威.UV-Fenton、Fenton和O3氧化法处理垃圾渗滤液反渗透膜浓缩液的对比研究[J].环境工程学报,2016,10(7):3 853-3 858.)
[5]Qin L L.Degradation of Refractory Organics in Landfill Leachate by Advanced Oxidation Technology Based on Fenton Reaction[D].Beijing:Beijing Jiaotong University,2015(in Chinese).(秦乐乐.基于芬顿原理的高级氧化技术去除垃圾渗滤液中难降解有机物的研究[D].北京:北京交通大学,2015.)
[6]Luo F,Wu G R,Hong Y Q.Method Verification in Laboratory of Water Wuality-determination of the Chemical Oxygen Demand-dichromate Method(HT828-2017)[J].J Green Sci Technol,2018,(14):81-82(in Chinese).(罗芳,伍国荣,洪雨晴.水质化学需氧量的测定重铬酸盐法HJ 828-2017的实验室方法验证[J].绿色科技,2018,(14):81-82.)
[7]Wang J,Chen Z H,Chen Z L,et al.Orthogonal Experiment on Treatment of Landfill Leachate by Catalytic Oxidation Under Microwave Radiation[J].Ecol Environ,2008,17(6):2 212-2 214(in Chinese).(王杰,程志辉,陈忠林,等.微波催化氧化法处理垃圾渗滤液的正交试验[J].生态环境,2008,17(6):2 212-2 214.)
[8]Yang S W.Study on Oxidation Degradation of Dye Wastewater and Landfill Leachate by Fe3+/Cu2+/H202 System[D].Changsha:Hunan Agricultural University,2007(in Chinese).(杨佘维.Fe3+/Cu2+/H2O2体系对染料废水和垃圾渗滤液的氧化降解研究[D].长沙:湖南农业大学,2007.)
[9]Wang J,Ma X P,Tang F D et al,.Study on Pretreatment of Landfill Leachate by Microwave-assisted Catalytic Oxidation Process[J].China Environ Sci,2011,31(7):1 166-1 170(in Chinese).(王杰,马溪平,唐凤德,等.微波催化氧化法预处理垃圾渗滤液的研究[J].中国环境科学,2011,31(7):1 166-1 170.)
[10]Jiang B J.Research for Absorption Degradation and Catalytic Oxidation Technology of Domestic Landfill Leachate[D].Harbin:Harbin Institute of Technology,2011(in Chinese).(蒋宝军.生活垃圾渗滤液吸附降解及催化氧化技术的研究[D].哈尔滨:哈尔滨工业大学,2011.)
[11]Feng X D,Liu F,Guo M M,et al.Ozonation of Landfill Leachate Treated by Biological Oxidation[J].Environ Pollut Control,2005,(5):387-388(in Chinese).(冯旭东,刘芳,郭明旻,等.垃圾渗滤液生物处理出水臭氧氧化的研究[J].环境污染与防治,2005,(5):387-388.)
[12]Liu W H,Ji M,Zhang X,et al.Catalytic Ozonation to Remove Refractory Organic Matter in Landfill Leachate[J].Environ Chem,2007,26(1):58-61(in Chinese).(刘卫华,季民,张昕,等.催化臭氧氧化去除垃圾渗滤液中难降解有机物的研究[J].环境化学,2007,26(1):58-61.)
[13]Asaithambi P,Sajjadi B,Aziz A R A,et al.Ozone(O3)and Sono(US)Based Advanced Oxidation Processes for the Removal of Color,COD and Determination of Electrical Energy from Landfill Leachate[J].Sep Purif Technol,2017,172:442-449.
[14]Bethi B,Sonawane S H,Bhanvase B A,et al.Nanomaterials based Advanced Oxidation Processes for Waste Water Treatment:A review[J].Chem Eng Process,2016,109:178-189.
[15]Serpone N,Horikoshi S,Emeline A V.Microwaves in Advanced Oxidation Processes for Environmental Applications.A Brief Review[J].J Photochem Photobiol C,2010,11(2):114-131.
[16]Yang S,Wang P,Yang X,et al.A Novel Advanced Oxidation Process to Degrade Organic Pollutants in Wastewater:Microwave-activated Persulfate Oxidation[J].J Environ Sci,2009,21(9):1 175-1 180.