Study on heat transfer and aniline remediation effect of thermal enhanced circulation well
LU Liang, PU Sheng-yan, LI Bo-wen
State Key laboratory of Geohazard Prevention and Geoenvironment Protection, State Environmental Protection Key laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Sicuan Chengdu 610059, China
Abstract:In-situ thermal remediation technology was adopted to enhance the remediation effect of circulation well on semi-volatile organic pollutants in this study. The effects of aeration flow rate, heating temperature and groundwater velocity on the heat transfer law of thermal enhanced circulation well were primarily investigated. Additionally, the remediation effect of aniline contaminated groundwater by thermal enhanced circulation well was simulated. The results revealed that the heat transfer law mainly depends on the hydraulic stimulation of the circulation well. The variation of the heating area with time can be accurately represented by an exponential function. In the medium sand aquifer, when the aeration flow rate was 0.3m3/h, the temperature was 60℃, and the groundwater flow rate was 0.2m/d, the heat transfer has the best operation effect. In the process of enhanced remediation of aniline contaminated groundwater, an efficient remediation area centered on the circulating well was gradually formed. After 48h of remediation, the average concentration of aniline decreased from 97.95mg/L to 0.168mg/L. In compared with the single circulating well technology, remediation effect has been improved 25.8% by integrated remediation technology, effectively avoiding the occurrence of tailing phenomena.
鲁亮, 蒲生彦, 李博文. 热强化循环井驱动热量传输及苯胺修复效果[J]. 中国环境科学, 2023, 43(9): 4639-4647.
LU Liang, PU Sheng-yan, LI Bo-wen. Study on heat transfer and aniline remediation effect of thermal enhanced circulation well. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(9): 4639-4647.
Johnson R L, Simon M A. Evaluation of groundwater flow patterns around a dual-screened groundwater circulation well[J]. Journal of Contaminant Hydrology, 2007,93(1-4):188-202.
[2]
顾维.循环井技术修复地下水氯苯污染的效果分析[J]. 资源节约与环保, 2020,228(11):45-46. Gu W. Effect analysis of circulating well technology for remediation of chlorobenzene contaminated groundwater[J]. Resources Economization & Environmental Protection, 2020,228(11):45-46.
[3]
Cirpka O A, Kitanidis P K. Travel-Time based model of bioremediation using circulation Wells[J]. Blackwell Publishing Ltd, 2001,(3):422-432.
[4]
Tatti F, Papini M P, Torretta V, et al. Experimental and numerical evaluation of groundwater circulation wells as a remediation technology for persistent, low permeability contaminant source zones -Science Direct[J]. Journal of Contaminant Hydrology, 2019,222:89-100.
[5]
Goltz M N, Gandhi R K, Gorelick S M, et al. Field evaluation of in situ source reduction of trichloroethylene in groundwater using bioenhanced in-well vapor stripping[J]. Environmental Science & Technology, 2005,39(22):8963-8970.
[6]
Gilmore T J, Spane F A, White M D. The effect of geologic heterogeneities on the installation and operation of the pilot in-well vapor strping system at an air force base in California"[M]. Denver, Colorado; 28th Annual Meeting of the Geological Society of America. October, 1996:28-31.
[7]
Spargo B J, Montgomery M T, Boyd T J, et al. In situ bioremediation and efficacy monitoring. SERDP project CU-030.1998.
[8]
白静,孙超,赵勇胜.地下水循环井技术对含水层典型NAPL污染物的修复模拟[J]. 环境科学研究, 2014,27(1):78-85. Bai J, Sun C, Zhao Y S. Remediation simulation of groundwater circulation well of NAPL contaminated aquifer[J]. Research of Environmental Sciences, 2014,27(1):78-85.
[9]
赵勇胜,焦维琦,孙超,等.基于增溶机理的Tween80强化地下水循井技术修复萘污染地下水[J]. 中南大学学报(自然科学版), 2015, 46(10):3969-3974. Zhao Y s, Jiao W Q, Sun C, et al. Solubilization of Tween 80 on enhanced remediation of naphthalene contaminated groundwater by ground water circulation well[J]. Journal of Central South University (Science and Technology), 2015,46(10):3969-3974.
[10]
宋刚,岳豪康,李恒超,等.地下水循环井技术研究进展[J]. 地下水, 2022,44(1):9-13,108. Song G, Yue H K, Li H C, et al. Research progress of groundwater circulation well technology[J]. Ground water, 2022,44(1):9-13,108.
[11]
屈智慧,王洪涛,杨勇,等.循环井技术修复地下水氯苯污染的效果研究[J]. 化学工程师, 2016,30(11):29-32,19. Qu Z H, Wang H T, Yang Y, et al. Research on effect in remediation of chlorobenzene contaminated groundwater by circulation well[J]. Chemical Engineer, 2016,30(11):29-32,19.
[12]
Zhao Y S, Qu D, Zhou R, et al. Efficacy of forming biofilms by Pseudomonas migulae AN-1toward in situ bioremediation of aniline-contaminated aquifer by groundwater circulation wells[J]. Environmental Science & Pollution Research, 2016,23(12):11568-11573.
[13]
Lakhwala F S, Mueller J G, Desrosiers R J. Demonstration of a Microbiologically Enhanced Vertical Ground Water Circulation Well Technology at a Superfund Site[J]. Groundwater Monitoring & Remediation, 2010,18(2):97-106.
[14]
白静,赵勇胜,陈子方,等.利用Tween80溶液冲洗修复萘污染地下水模拟实验[J]. 吉林大学学报(地球科学版), 2013,43(2):552-557. Bai J, Zhao Y S, Chen Z, et al. Simulation experiments of utilizing tween 80 solution flushing naphthalene from contaminated groundwater[J]. Journal of Jilin University (Earth Science Edition), 2013,43(2):552-557.
[15]
王霄.循环井-井内生物反应器技术修复苯胺污染含水层[D]. 长春:吉林大学, 2013. Wang X. Study on the remediation of simulated aquifer contaminated by aniline by using groundwater circulation well combined in well bioreactor[D]. Changchun:Jilin University, 2013.
[16]
Trotschler O, Koschitzky H P, Limburg B, et al. Ean of heterocyclic hydrocarbons using hydrogen peroxide and groundwater circulation wells-pilot application in the plume of a former gasworks[C]. 10th international UFZ-Deltares/TNO Conference on Soil-Water Systems, 2008:8-17.
[17]
Yuan S H, Liu Y, Zhang P, et al. Electrolytic groundwater circulation well for trichloroethylene degradation in a simulated aquifer[J]. Science China (Technological Sciences), 2021,64(2):251-260.
[18]
Mcguire T M, Adamson D T, Burcham M S, et al. Evaluation of long-term performance and sustained treatment at enhanced anaerobic bioremediation sites[J]. Ground Water Monitoring & Remediation, 2016,36(2):32-44.
[19]
刘明柱,陈鸿汉,胡丽琴,等.生物降解作用下地下水中TCE、PCE迁移转化的数值模拟研究[J]. 地学前缘, 2006,(1):155-159. Liu M Z, Chen H H, Hu L Q, et al. Numerical simulation of the transport and transformation of TCE and PCE in groundwater under biodegradation[J]. Earth Science Frontiers(China University of Geosciences.Beijing; Peking University), 2006,(1):155-159.
[20]
Stella T, Covino S, Čvančarová M, et al. Bioremediation of long-term PCB-contaminated soil by white-rot fungi[J]. Journal of Hazardous Materials, 2017,324(Pt B):701-710.
[21]
Ginzburg A L, Truong L, Tanguay R L, et al. Synergistic toxicity produced by mixtures of biocompatible gold nanoparticles and widely used surfactants[J]. ACS Nano, 2018,12(6):5312-5322.
[22]
Zhu F J, Ma W L, Xu T F, et al. Removal characteristic of surfactants in typical industrial and domestic wastewater treatment plants in Northeast China[J]. Ecotoxicology and Environmental Safety, 2018,153:84-90.
[23]
Vats O P, Sharma B, Stamm J, et al. Groundwater circulation well for controlling saltwater intrusion in coastal aquifers:Numerical study with experimental validation[J]. Water resources Management, 2020, 34(11):3551-3563.
[24]
Herrling B, Stamm J. Hydraulic circulation system for in situ remediation of strippable contaminants and in situ bioreclamation (GZB/UVB method)[M]. 1991.
[25]
Allmon W E, Everett L G, Lightner A T, et al. Groundwater circulating well technology assessment[R]. Naval Research Laboratory, Washingtong, 1999.