垂直流动态强化下基质对污染物的吸附活性及机理

吴浩; 江成; 曹文平; 李泽兵

doi:DOI:10.13205/j.hjgc.202207008

垂直流动态强化下基质对污染物的吸附活性及机理

doi: DOI:10.13205/j.hjgc.202207008

吴浩^1,2,
江成^1, ,,
曹文平^3,4,
李泽兵²

1. 江西省科学院能源研究所, 南昌 330096;
2. 东华理工大学水资源与环境工程学院, 南昌 330013;
3. 徐州工程学院环境工程学院, 江苏徐州 221111;
4. 江苏莲洋港环保科技有限公司, 江苏徐州 221003

基金项目:

江西省科学院科技计划项目(2020-YZD-30)

江西重点研发计划项目(20202BBG73004)

江苏省高等学校自然科学研究重大项目(20KJA610004)

江西省科学院省级科技计划项目包干制试点示范项目(2021YSBG21017)

详细信息

作者简介:
吴浩(1997-),男,硕士研究生,主要研究方向为水污染控制技术。1461168826@qq.com

通讯作者:
江成(1978-),男,博士,副研究员,主要研究方向为水污染控制技术。jiangcheng0907@163.com

计量
- 文章访问数: 184
- HTML全文浏览量: 26
- PDF下载量: 7
- 被引次数: 0
出版历程
- 收稿日期: 2021-09-30
- 网络出版日期: 2022-09-02

ADSORPTION ACTIVITY AND MECHANISM OF POLLUTANTS REMOVAL BY SUBSTRATES UNDER THE DYNAMIC STRENGTHENING OF VERTICAL FLOW

WU Hao^1,2,
JIANG Cheng^{1
, ,},
CAO Wenping^3,4,
LI Zebing²

1. Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang 330096, China;
2. School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China;
3. School of Environmental Engineering, Xuzhou Institute of Technology, Xuzhou 221111, China;
4. Jiangsu LYG Environmental Technology Co., Ltd, Xuzhou 221003, China

摘要

摘要: 基质作为人工湿地的骨架部分,对污染物的去除发挥着重要作用。选择黄土球、无烟煤与页岩陶粒,在不同进水负荷的垂直流动态条件下,对污染物去除进行比较,并通过X射线衍射(XRD)和扫描电镜(SEM)对其矿物组成与表面形貌进行分析,以深入探讨黄土球等基质的吸附活性及机理。结果表明:黄土球因其本身的去质子化作用,对NH₄⁺-N具有极好的吸附活性,试验初始阶段NH₄⁺-N去除率达到80%;同时,在较高磷浓度的进水负荷下,黄土球的静电作用与原子配位反应提升了其对可溶性反应磷(SRP)及颗粒磷(PP)的吸附能力;此外,黄土球的物理吸附作用对于COD的去除率均值达到50%,并改善水体中以芳香类为主的溶解性有机质(DOM)组成;无烟煤同样具有高效的吸附活性,对TP去除率能达到80%,单位基质磷吸附能力为6.89 mg/kg;无烟煤吸附机理以静电吸附为主,致使去除水体中的SRP效率更高,占据磷去除总量的44%;页岩陶粒则源于自身丰富的金属矿物成分,对PP有良好的结合吸附作用。3种基质在连续试验中均表现出对不同污染物的吸附活性,在连续试验中对污染物的"吸附疲性"也有着显著差异。基于试验结果和机理分析发现,黄土球具有潜在的湿地基质应用价值,并有助于改善水质中的DOM组分。
- 动态试验 /
- DOM /
- 吸附活性 /
- 吸附疲性 /
- 黄土球
Abstract: As the skeleton part of the constructed wetland,the substrates play an important role in removing pollutants.Under the vertical flow dynamic conditions with different influent loads,the experiments selected loess balls,anthracite coal,and shale ceramsite for pollutant removal.For in-depth research about the adsorption activity and mechanism of three substrates,the mineral composition,and surface morphology were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM).The test results showed that due to its own deprotonation,loess balls could remove 80% of NH₄⁺-N in the initial stage.Under high phosphorus load,the electrostatic interaction and atomic coordination reaction of loess balls improved their adsorption capacity for soluble reactive phosphorus (SRP) and particulate phosphorus (PP).In addition,the physical adsorption of loess balls had an average removal rate of 50% on COD,and improved the composition of dissolved organic matter (DOM) dominated by aromatics in water.The TP removal rate of anthracite could reach 80%,while the adsorption capacity of phosphorus for per unit matrix was 6.89 mg/kg.Due to the electrostatic adsorption of anthracite,the removal of SRP accounted for 44% of the TP removal.Shale ceramsite was derived from its own rich metal mineral composition,which was better in PP removal.The three substrates all showed certain adsorption activity on different pollutants in the continuous test,and "adsorption fatigue" of the pollutants also had significant differences in the continuous test.It was found that loess balls had potential application value of wetland substrates and helped to optimize the DOM components in water.
- dynamic test /
- DOM /
- adsorption activity /
- adsorption fatigue /
- loess ball

HTML全文

参考文献(31)

[1]	ZHANG H, TANG W Z, WANG W D, et al. A review on China's constructed wetlands in recent three decades:application and practice[J]. Journal of Environmental Sciences, 2021, 104(6):53-68.
[2]	FERNANDO G A, JHANINA P C, FANNY Z C, et al. Performance of Phragmites Australis and Cyperus Papyrus in the treatment of municipal wastewater by vertical flow subsurface constructed wetlands[J]. International Soil and Water Conservation Research, 2019, 7(3):286-296.
[3]	翟宇昆,赵敏,郑向勇,等.铁碳填料和硫铁矿填料强化两段式人工湿地处理农村生活污水[J].环境工程,2019,37(7):108-113.
[4]	BAI S Y, QIN L Q, LIU L H, et al. Effect of substrate types on contaminant removals,electrochemical characteristics and microbial community in vertical flow constructed wetlands for treatment of urban sewage[J]. Journal of Environmental Management, 2020, 280(15):111682.
[5]	LIU H, CHENG C, WU H M. Sustainable utilization of wetland biomass for activated carbon production:a review on recent advances in modification and activation methods[J]. Science of the Total Environment, 2021,790:148214.
[6]	陈昢圳,华进程,郑向群,等.以建筑废砖为填料的人工湿地对农村生活污水的净化效果[J].环境工程,2017,35(9):35-39.
[7]	DONG L, QI Z P, LI M Q, et al. Organics and nutrient removal from swine wastewater by constructed wetlands using ceramsite and magnetite as substrates[J]. Journal of Environmental Chemical Engineering, 2021, 9(1):104739.
[8]	KILISLIOGLU A, BILGIN B. Thermodynamic and kinetic investigations of uranium adsorption on amberlite IR-118H resin[J]. Applied Radiation&Isotopes, 2003, 58(2):155-160.
[9]	PARK J H, DONG I J. Removal of total phosphorus (TP) from municipal wastewater using loess[J]. Desalination, 2011, 269(1/2/3):104-110.
[10]	TIAN S M, LI Z W, WANG Z Y, et al. Mineral composition and particle size distribution of river sediment and loess in the middle and lower Yellow River[J]. International Journal of Sediment Research, 2020, 36(3):392-400.
[11]	ZANG F, WANG S L, NAN Z R, et al. Leachability of heavy metals in loess-amended dredged sediment from Northwest of China[J]. Ecotoxicology and Environmental Safety, 2019, 183:109561.
[12]	WANG H K, QIAN H, GAO Y Y, et al. Classification and physical characteristics of bound water in loess and its main clay minerals[J]. Engineering Geology, 2020, 265:105394.
[13]	CHEN W, WESTERHOFF P, LEENHEER J A, et al. Fluorescence excitation-emission matrix regional integration to quantify spectra for dissolved organic matter[J]. Environmental Science&Technology, 2003, 37(24):5701-5710.
[14]	YUAN Y R, YANG B S, WANG H, et al. The simultaneous antibiotics and nitrogen removal in vertical flow constructed wetlands:Effects of substrates and responses of microbial functions[J]. Bioresource Technology, 2020, 310(7):123419.
[15]	蒋善庆,王晓昌.黄土颗粒吸附水解尿液中磷酸盐特性及机制[J].化工进展,2017,36(7):2667-2675.
[16]	黄丽敏,靳强,杨斌,等.位点能量分布理论及其在土壤和沉积物对污染物吸附研究中的应用[J].环境化学,2017,36(11):2424-2433.
[17]	王明铭,魏俊,黄荣敏,等.潜流人工湿地填料及其去除污染物机理研究进展[J].环境工程技术学报,2021,11(4):769-776.
[18]	赵倩,庄林岚,盛芹,等.潜流人工湿地中基质在污水净化中的作用机制与选择原理[J].环境工程,2021,39(9):14-22.
[19]	CHEN Y C, SHI J W, RONG H, et al. Adsorption mechanism of lead ions on porous ceramsite prepared by co-combustion ash of sewage sludge and biomass[J]. Science of the Total Environment, 2020, 702:135017.
[20]	吴英海,杨静,李可心,等.氟化物对火山石基质人工湿地处理废水性能及菌群的影响[J].化工进展,2020,39(11):4632-4642.
[21]	JIANG C, JIA L Y, ZHANG B, et al.Comparison of quartz sand, anthracite, shale and biological ceramsite for adsorptive removal of phosphorus from aqueous solution[J]. Journal of Environmental Sciences, 2014, 26(2):466-477.
[22]	NANDAKUMAR S, HARSH P, SANAK R. Haritash.Removal of phosphorous and nitrogen from wastewater in Brachiaria-based constructed wetland[J]. Chemosphere, 2019, 233(OCT):216-222.
[23]	LI Y Y, FU F L, CAI W T, et al. Synergistic effect of mesoporous feroxyhyte nanoparticles and Fe (Ⅱ) on phosphate immobilization:adsorption and chemical precipitation[J]. Powder Technology, 2019, 345:786-795.
[24]	ROY R, SULTANA S, WANG J X, et al. Revegetation of coal mine degraded arid areas:the role of a native woody species under optimum water and nutrient resources[J]. Environmental Research, 2021, 204(Pt A):111921.
[25]	HUANG X. Intersection of isotherms for phosphate adsorption on hematite[J]. Journal of Colloid and Interface Science, 2004, 271(2):296-307.
[26]	BAO T, CHEN T H, TAN J, et al. Synthesis and performance of iron oxide-based porous ceramsite in a biological aerated filter for the simultaneous removal of nitrogen and phosphorus from domestic wastewater[J]. Separation and Purification Technology, 2016, 167:154-162.
[27]	ZHU Y M, JI H M, REN H Q, et al. Enhancement of static magnetic field on nitrogen removal at different ammonium concentrations in a sequencing batch reactor:performance and biological mechanism[J]. Chemosphere, 2021, 268:128794.
[28]	葛军,申星梅,吴成志,等.K⁺、Na⁺、Ca²⁺共存离子对活性炭吸附Cr (Ⅵ)的影响[J].环境污染与防治,2019,41(1):6-9.
[29]	许金鑫,王初,姚东京,等.崇明东滩湿地土壤溶解性有机质的光谱特征分析[J].环境工程, 2020, 38(11):218-225.
[30]	祝鹏,华祖林,李惠民. PARAFAC法解析太湖水体DOM三维荧光光谱[J].光谱学与光谱分析,2013,33(6):1619-1625.
[31]	WANG Y, ZHANG Z Y, HAN L F, et al. Preferential molecular fractionation of dissolved organic matter with different oxidation states[J]. Chemical Geology, 2019, 520:69-76.