|
|
|
| Advanced treatment of landfill leachate by ultraviolet catalytic persulfate |
| HUANG Li-kun1, LI Zhe1, WANG Guang-zhi2, ZHAO Wen-li2, XU Yuan-yuan1, WANG Dong-dong2 |
1. School of Food Engineering, Harbin University of Commerce, Harbin 150076, China;
2. State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China |
|
|
|
|
Abstract To study the treatment characteristics of leachate biochemical effluent from refuse incineration plant, the effects of advanced treatment of landfill leachate by ultraviolet (UV) system, single persulfate (PS) system and ultraviolet/persulfate (UV/PS) system were compared. The results showed that the removal efficiency of UV/PS system was better than that of the other two systems. When the initial concentration of humic acid was 200mg/L, the dosage of PS was 25mmol/L, and the initial pH value was 4, the maximum removal rate of UV254 was 89.62%, the maximum removal rate of TOC was 76.17%. The effects of temperature, initial pH value and dosage ratio of chemicals on the treatment of leachate by UV/PS process were studied. It’s found that the treatment effect was good. The optimal conditions were as follows: temperature 35℃, pH value 4, dosing ratio 2, running for 24h, the maximum removal rate of COD was 82.64%, and the maximum treatment efficiency of TOC was 66.69%. At the same time, the removal ability of the system was in accordance with the pseudo-second-order kinetic equation. This paper can provide reference for advanced treatment of leachate in waste incineration plant.
|
|
Received: 09 May 2020
|
|
|
|
|
|
| [1] |
徐海云.城市生活垃圾处理行业2017年发展综述[J]. 中国环保产业, 2018,(7):5-9. Xu H Y. Development review of municipal solid waste treatment industry in 2017[J]. China Environmental Protection Industry, 2018,(7):5-9.
|
| [2] |
邱松凯,范举红,黄开坚,等.臭氧-曝气生物滤池深度处理垃圾焚烧渗滤液可行性研究[J]. 中国环境科学, 2014,34(10):2513-2521. Qiu S K, Fan J H, Huang K J, et al. Feasibility study on advanced treatment of landfill leachate by ozone biological aerated filter[J]. China Environmental Science, 2014,34(10):2513-2521.
|
| [3] |
Tânia F C V S, Eloísa V, Ana R L, et al. How the performance of a biological pre-oxidation step can affect a downstream photo-Fenton process on the remediation of mature landfill leachates:Assessment of kinetic parameters and characterization of the bacterial communities[J]. Separation and Purification Technology, 2017,175:274-286.
|
| [4] |
Alkhafaji R A, Bao J G, Zaidun N A. Biological nutrient removal by internal circulation upflow sludge blanket reactor after landfill leacha tepretreatment[J]. Journal of Environmental Sciences, 2013,25(10):2130-2137.
|
| [5] |
Deng Y, Englehardt J D. Electrochemical oxidation for landfill leachate treatment[J]. Waste Management, 2007,27(3):380.
|
| [6] |
张倩,谢陈飞洋,仇玥,等.Fe/污泥基生物炭持久活化过硫酸盐降解酸性橙G[J]. 中国环境科学, 2019,39(9):3879-3886. Zhang Q, Xie C F Y, Qiu Y, et al. Degradation of acid orange G by persulfate activated by Fe/sludge based biochar[J]. China Environmental Science, 2019,39(9):3879-3886.
|
| [7] |
Lin Y T, Liang C J, Chen J H. Feasibility study of ultraviolet activated persulfate oxidation of phenol[J]. Chemosphere, 2011,82:1168-1172.
|
| [8] |
Luo C W, Jiang J, Ma J, et al. Oxidation of the odorous compound 2, 4, 6-trichloroanisole by UV activated persulfate:Kinetics, products, and pathways[J]. Water Research, 2016,96:121.
|
| [9] |
国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M]. 北京:中国环境科学出版社, 2002. Editorial board of the State Environmental Protection Administration. Monitoring and analysis methods of water and wastewater[M]. Beijing:China Environmental Science Press, 2002.
|
| [10] |
朱正江.日光/Fe2+/过硫酸盐体系中酸性刚果红降解研究[D]. 大连:大连海事大学, 2012. Zhu Z J. Degradation of acid Congo red in sunlight/Fe~(2+)/persulfate system[D]. Dalian Maritime University, 2012.
|
| [11] |
Mccallum J E B, Madison S A. Analytical studies on the oxidative degradation of the reactive textile dye uniblue A[J]. Environmental Science and Technology, 2000,34(24):5157-5164.
|
| [12] |
Chen J, Su H Y. Identification of sulfate and hydroxyl radicals in thermally activated persulfate[J]. Industrial & Engineering Chemistry Research, 2009,48(11):5558-5562.
|
| [13] |
周宁.超声/过硫酸盐法去除水中卡马西平及腐殖酸的研究[D]. 武汉:华中科技大学, 2015. Zhou N. Study on the removal of carbamazepine and humic acid from water by ultrasonic/persulfate method[D]. Wuhan:Huazhong University of Science and Technology, 2015.
|
| [14] |
Neppolian B, Jung H, Choi H, et al. Sonolytic degradation of methyl tert -butyl ether:the role of coupled fenton process and persulphate ion[J]. Water Research, 2002,36(19):4699-4708.
|
| [15] |
Nie M H, Yang Y, Zhang Z J, et al. Degradation of chloramphenicol by thermally activated persulfate in aqueous solution[J]. Chemical Engineering Journal, 2014,246:373-382.
|
| [16] |
Kim Y B, Ahn J H. Microwave-assisted decomposition of landfill leachate with persulfate[J]. Journal of Environmental Engineering, 2015,142(3):84.
|
| [17] |
侯先宇,陈炜鸣,李启彬,等.微波活化过硫酸盐耦合混凝处理二硝基重氮酚工业废水[J]. 中国环境科学, 2018,38(12):4551-4558. Hou Xianyu, Chen Weiming, Li Qibin, et al. Microwave activated persulfate coupled coagulation for the treatment of dinitroaminophenol industrial wastewater[J]. China Environmental Science, 2018,38(12):4551-4558.
|
| [18] |
Farshid G, Mahsa M, Fariba G. Degradation of 2, 4, 6-trichlorophenol in aqueous solutions using peroxymonosulfate/activated carbon/UV process via sulfate and hydroxyl radicals[J]. Journal of Water Process Engineering, 2016,9:22-28.
|
| [19] |
Liang C, Wang Z S, Bruell C J, Influence of pH on persulfate oxidation of TCE at ambient temperatures[J]. Chemosphere, 2007, 66:106-113.
|
| [20] |
Criquet J, Leitner N K V. Degradation of acetic acid with sulfate radical generated by persulfate ions photolysis[J]. Chemosphere, 2009,77:194-200.
|
| [21] |
Sarita D, Rahul K, Moonis A K, et al. Aqueous phase degradation of methyl paraben using UV-activated persulfate method[J]. Chemical Engineering Journal, 2017,321:11-19.
|
| [22] |
Wang J L, Wang S Z. Activation of persulfate (PS) and peroxymonosulfate (PMS) and application for the degradation of emerging contaminants[J]. Chemical Engineering Journal, 2018, 334:1502-1517.
|
|
|
|
