Treatment of effluent from MBR by Fenton cathode-electrocoagulation ozone air flotation process
DIAO Yue1, YANG Chao1, JIN Xin1,2, SUN Hui1, JIN Peng-kang1,2
1. School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; 2. School of Human Settlement Environment and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Abstract:In order to remove organic matter in landfill leachate MBR effluent, the Fenton cathode-electrocoagulation ozone air flotation process was constructed with aluminum (Al) as anode and carbon polytetrafluoroethylene (C-PTFE) as cathode. The removal characteristics of this process for landfill leachate MBR membrane effluent were investigated by comparing with the conventional electrocoagulation cathode (Al and SS). When the pH5 and ozone flow were 300mL/min, the COD removal rate of Fenton cathode system was increased by 30.03% and 15.16%, respectively, compared with that of SS and Al cathode systems. According to the analysis of three-dimensional fluorescence characteristics, the C-PTFE cathode system had a good removal effect on humic acids. A typical refractory organic compound IBP (ibuprofen) was selected in MBR effluent to clarify the mechanism of organic degradation. The results showed that compared with SS cathode and Al cathode, the H2O2 production of C-PTFE cathode system was increased by 63.27% and 122.22%, respectively. The quenching experiment showed that ·OH was generated not only through the reaction of H2O2 and O3, but also through the reaction of O3-and H2O, it was proved that THE C-PTFE cathode had a certain strengthening effect on the electrocoagulation ozone flotation process, and was more conducive to the removal of organic matter.
刁悦, 杨超, 金鑫, 孙辉, 金鹏康. 芬顿阴极-电凝聚臭氧气浮工艺处理MBR出水特性[J]. 中国环境科学, 2022, 42(2): 728-735.
DIAO Yue, YANG Chao, JIN Xin, SUN Hui, JIN Peng-kang. Treatment of effluent from MBR by Fenton cathode-electrocoagulation ozone air flotation process. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(2): 728-735.
许威,王艳秋,孟广才,等.载铁电芬顿阴极处理垃圾渗滤液MBR出水[J]. 水处理技术, 2020,46(8):99-103,109. Xu W, Wang Y Q, Meng G C, et al. Treatment of landfill leachate MBR effluent with Fenton cathode[J]. Technology of Water Treatment, 2020,46(8):99-103,109.
[2]
卜光辉,冼萍,詹龙辉,等."超滤/混凝-Fenton+反渗透"处理垃圾渗滤液生化出水[J]. 广西大学学报(自然科学版), 2017,42(2):669-674. Bu G H, Xiang P, Zhan L H, et al. Treatment of wastewater from landfill leachate by ultrafiltration/coagulation/Fenton+ reverse osmosis[J]. Journal of Guangxi University (Natural Science Edition), 2017, 42(2):669-674.
[3]
Jin X, Shi Y, Hou R, et al. Role of Al-based coagulants on a hybrid ozonation-coagulation (HOC) process for WWTP effluent organic matter and ibuprofen removal[J]. Environmental Science-Water Research & Technology, 2019,5(3):599-608.
[4]
侯瑞,金鑫,金鹏康,等.臭氧-混凝耦合工艺污水深度处理特性及其机制[J]. 环境科学, 2017,38(2):640-646. Hou R, Jin X, Jin P K, et al. Treatment of wastewater by ozone-coagulation-coupled process[J]. Environmental Science, 2017,38(2):640-646.
[5]
谢新月,许建军,张少华,等.电凝聚臭氧化耦合工艺的有机物处理特性及去除机制解析[J]. 环境科学, 2021,42(2):883-890. Xie X Y, Xu J J, Zang S H, et al. Study on the treatment characteristics and removal mechanism of organic matter by electrocoagulation ozonation coupling process[J]. Environmental Science, 2021,42(2):883-890.
[6]
Jin X, Xie X Y, Liu Y G, et al. The role of synergistic effects between ozone and coagulants (SOC) in the electro-hybrid ozonation-coagulation process[J]. Water Res., 2020,177:115800.
[7]
WANG Y J, LI X Y, ZHEN L M, et al. Electro-Fenton treatment of concentrates generated in nanofiltration of biologically pretreated landfill leachate[J]. Journal of Hazardous Materials, 2012,229-230:115-121.
[8]
陆平.草酸钛钾分光光度法测定Fenton高级氧化系统中的过氧化氢[J]. 建筑工程技术与设计, 2014,(8):582-582,517.DOI:10.3969/j.issn.2095-6630.2014.08.553. Lu P. Determination of hydrogen peroxide in Fenton advanced oxidation system by titanium potassium oxalate spectrophotometry[J]. 2014,(8):582-582,517.DOI:10.3969/j.issn.2095-6630.2014.08.553.
[9]
刘雨果,金鑫,许建军,等.电凝聚臭氧化耦合工艺的二级出水处理特性与机理研究[J]. 环境科学学报, 2020,40(11):3877-3884. Liu H G, Jin X, Xu J J, et al. Study on the treatment characteristics and mechanism of secondary effluent by electrocoagulation ozonation coupling process[J]. Environmental Science and Technology, 2020, 40(11):3877-3884.
[10]
Shuang S, He Z, Qiu J, et al. Ozone assisted electrocoagulation for decolorization of C.I.Reactive Black 5 in aqueous solution:An investigation of the effect of operational parameters[J]. Separation & Purification Technology, 2007,55(2):238-245.
[11]
Reckhow D A, Legube B, Singer P C. The ozonation of organichalide precursors:effect of bicarbonate[J]. Water Research, 1986,20(8):987-998.
[12]
Bose P, Reckhow D A. The effect of ozonation on natural organicmatter removal by alum coagulation[J]. Water Research, 2007,41(7):1524.
[13]
师延龄,王文东.碳纤维填充聚四氟乙烯的性能及应用[J]. 有机氟工业, 2005,(3):23-25. Shi Y L, Wang W D. Performance and application of carbon fiber filled polytetrafluoroethylene[J]. Organic Fluoride Industry, 2005, (3):23-25.
[14]
金鑫,金鹏康,孔茜,等.污水厂二级出水溶解性有机物臭氧化特性研究[J]. 中国环境科学, 2015,35(10):2985-2990. Jin X, Jin P K, Kong Q, et al. Study on ozonation of dissolved organic compounds in secondary effluent of wastewater treatment plant. China Environmental Science, 2015,35(10):2985-2990.
[15]
张永森,郑彤,孙彦龙,等.臭氧-活性炭组合工艺深度处理垃圾渗滤液MBR出水[J]. 环境工程学报, 2017,11(8):4535-4541. Zhang Y S, Zhang T, Sun Y L,et al. Advanced treatment of landfill leachate effluent by ozone-activated carbon combined process. Chinese Journal of Environmental Engineering, 2017,11(8):4535-4541.
[16]
程治良,罗丹,吴俊,等.Ca(OH) 2絮凝沉淀-臭氧氧化垃圾渗滤液生化出水提高反渗透性能[J]. 环境化学, 2016,35(6):1296-1304. Cheng Z L, Luo D, Wu J, et al. Improvement of reverse osmosis performance of landfill leachate effluent by Ca(OH) 2flocculation and ozonation[J]. Environmental Chemistry, 2016,35(6):1296-1304.
[17]
杜安静,范举红,刘锐,等.单级和两级串联臭氧-生物活性炭深度处理垃圾渗滤液的比较研究[J]. 环境科学, 2015,36(11):4154-4160. Du A J, Fan J H, Liu R, et al. Comparative study on the advanced treatment of landfill leachate by single-stage and two-stage series ozone-biological activated carbon[J]. Environmental Science, 2015, 36(11):4154-4160.
[18]
赵庆良,卜琳,杨俊晨,等.腐蚀电池-Fenton处理渗滤液溶解性有机物光谱特征[J]. 环境科学, 2011,32(8):2378-2384. Zhao Q L, Bu L, Yang J C, et al. Spectral characteristics of dissolved organic matter in leachate treated by corrosion battery-Fenton[J]. Environmental Science, 2011,32(8):2378-2384.
[19]
岳琳,王启山,石岩,等.CuO-CeO2/γ-Al2O3粒子电极对垃圾渗滤液降解特性[J]. 环境科学, 2008,29(6):1582-1586. Yue L, Wang Q S, Shi Y, et al. Degradation of landfill leachate by CuO-CeO2/γ-Al2O3particle electrode[J]. Environmental Science, 2008,29(6):1582-1586.
[20]
胡晨燕,李光明,夏凤毅,等.电解Fenton法处理生活垃圾焚烧厂渗滤液的动力学研究[J]. 环境科学, 2006,27(8):1591-1595. Hu C Y, Li G M, Xia F Y, et al. Treatment of leachate from domestic waste incineration plant by electro-Fenton process[J]. Environmental Science, 2006,27(8):1591-1595.
[21]
Bhanra B N, Ahmed I, Kim S, et al. Adsorptive removal of ibuprofen and diclofenac from water using metal-organic framework-derived porous carbon[J]. Chemical Engineering Journal, 2017,314:50-58.
[22]
Ikhlaq A, Javed F, Akram A, et al. Synergic catalytic ozonation and electroflocculation process for the treatment of veterinary pharmaceutical wastewater in a hybrid reactor[J]. Journal of Water Process Engineering, 2020,38:101597.
[23]
Meric S, Selcuk H, Belgiorno V. Acute toxicity removal in textile finishing wastewater by Fenton's oxidation, ozone and coagulation-flocculation processes[J]. Water Res, 2005,39(6):1147-1153.
[24]
Nguyen M K, Tran V S, Pham T T, et al. Fenton/ozone-based oxidation and coagulation processes for removing metals (Cu, Ni) -EDTA from plating wastewater[J]. Journal of Water Process Engineering, 2021,39:101836.
[25]
Dong P, Wang H L, Liu W J, et al. Quasi-MOF derivative-based electrode for efficient electro-Fenton oxidation[J]. J Hazard Mater, 2021,401:123423.
[26]
刘海龙,付晶淼,郭雪峰,等.臭氧-混凝交互作用对水体有机物的影响[J]. 环境科学, 2017,38(5):1918-1927. Liu H L, Fu J M, Guo X F, et al. Effect of ozone-coagulation interaction on organic matter in water[J]. Environmental Science, 2017,38(5):1918-1927.
[27]
张一欣,崔欣欣,刘淑琴,等.三维电极耦合臭氧技术处理油田压裂返排液[J]. 中国环境科学, 2020,40(5):2270-2275. Zhang Y X, Cui X X, Liu S Q, et al. Three-dimensional electrode coupled ozone technology for treatment of oilfield fracturing flowback fluid[J]. China Environmental Science, 2020,40(5):2270-2275.
[28]
张彭义,余刚,孙海涛,等.臭氧/活性炭协同降解有机物的初步研究[J]. 中国环境科学, 2000,20(2):159-162. Zhang P Y, Yu G, Sun H T, et al. Study on the synergistic degradation of organic compounds by ozone and activated carbon[J]. China Environmental Science, 2000,20(2):159-162.
[29]
Wang W, Lu Y B, Luo H P, et al. A microbial electro-fenton cell for removing carbamazepine in wastewater with electricity output[J]. Water Res., 2018,139:58-65.
[30]
Robles I, Moren-Rubio G, Garcia-Eapinoza J D, et al. Study of polarized activated carbon filters as simultaneous adsorbent and 3D-type electrode materials for electro-Fenton reactors[J]. J. Environ. Chem. Eng., 2020,8(5):104414.
[31]
Choe Y J, Kim J, Byun J Y, et al. An electro-Fenton system with magnetite coated stainless steel mesh as cathode[J]. Catalysis Today, 2021,359:16-22.
[32]
李海涛,李玉平,张安洋,等.新型非均相电-Fenton技术深度处理焦化废水[J]. 环境科学, 2011,32(1):171-178. Li H T, Li Y P, Zhang A Y, et al. Advanced treatment of coking wastewater by heterogeneous electro-Fenton process[J]. Environmental Science, 2011,32(1):171-178.
[33]
崔欣欣,林志荣,王会姣,等.基于穿透电极的Electro-peroxone技术降解布洛芬[J]. 中国环境科学, 2019,39(4):1619-1626. Cui X X, Lin Z R, Wang H J, et al. Degradation of Ibuprofen by Electro-peroxone Technology Based on Penetration Electrode[J]. China Environmental Science, 2019,39(4):1619-1626.