ROLE AND DESIGN PRINCIPLES OF SUBSTRATE FOR WASEWATER PURIFICATION IN SUBSURFACE FLOW CONSTRUCTED WETLAND
-
摘要: 潜流人工湿地依靠基质、微生物以及植物的共同作用实现对污水中各类污染物的去除。其中,基质是潜流人工湿地的重要组成部分,在水质净化中发挥着至关重要的作用。基质可对污染物进行直接吸附去除。不同基质类型对氨氮与总磷具有不同的吸附能力,同时,吸附效率受到水质、水力条件等参数影响。此外,基质为微生物提供附着表面,基质材质、内部孔道结构、比表面积等均影响生物膜的形成与发展,进而间接影响人工湿地的污水净化功能。通过改变基质所处淹没/暴露状态、增加缓释碳源基质、增加铁碳电解对基质等方式来增加补氧、强化反硝化和电化学强化,从而改善人工湿地对NH3-N、TN与TP类污染物的去除效果。Abstract: The wastewater purification in subsurface flow constructed wetland is realized by the combined functions of substrate, microbes, and plant. Substrate, as an important element, plays critical role in wastewater purification. Firstly, substrate could directly absorb pollutants. The efficiency of pollutant absorbance varies with the substrate material, which is also influenced by the water quality, hydraulic condition, etc. Secondly, substrate could provide the surface for microbes to form biofilm. The properties of substrate, e.g. the material, the saturated/unsaturated condition of substrate, the inner porous structure, and specific surface area, all affect the formation and development of biofilm, as well as the wastewater purification indirectly. Increasing the unsaturated area of substrate, adding the material that could slow-release carbon source, adding Fe-C micro-electrolysis material could improve the removal of ammonia, total nitrogen, and phosphorus by enhancing the oxygen supplement, denitrification process and the chemical sedimentation process, respectively.
-
[1] ZHUANG L L,YANG T,ZHANG J,et al.The configuration,purification effect and mechanism of intensified constructed wetlandfor wastewater treatment from the aspect of nitrogen removal:a review[J].Bioresource Technology,2019,293(4):122086. [2] XU J,LIU X W,HUANG J L,et al.The contributions and mechanisms of iron-microbes-biochar in constructed wetlands for nitrate removal from low carbon/nitrogen ratio wastewater[J].RSC Advances,2020,10(39):23212-23220. [3] WU Z,HE J,HE F,et al.Comprehensive evaluation of substrates in vertical-flow constructed wetlands for domestic wastewater treatment[J].Water Practice and Technology,2015,10(3):625-632. [4] RAMIREZ S,TORREALBA G,LAMEDA-CUICAS E,et al.Investigation of pilot-scale constructed wetlands treating simulated pre-treated tannery wastewater under tropical climate[J].Chemosphere,2019,234(6):496-504. [5] 胡洪营,石磊,许春华,等.区域水资源介循环利用模式:概念·结构·特征[J].环境科学研究,2015,28(6):839-847. [6] LIU F F,FAN J L,DU J H,et al.Intensified nitrogen transformation in intermittently aerated constructed wetlands:removal pathways and microbial response mechanism[J].Science of the Total Environment,2019,650(10):2880-2887. [7] ZHENG X Y,JIN M Q,ZHOU X,et al.Enhanced removal mechanism of iron carbon micro-electrolysis constructed wetland on C,N,and P in salty permitted effluent of wastewater treatment plant[J].Science of the Total Environment,2019,649(8):21-30. [8] 万正芬,张学庆,卢少勇.19种人工湿地填料对磷吸附解吸效果研究[J].水处理技术,2015,41(4):35-39,44. [9] 卢少勇,万正芬,李锋民,等.29种湿地填料对氨氮的吸附解吸性能比较[J].环境科学研究,2016,29(8):1187-1194. [10] GUAN W,YIN M,HE T,et al.Influence of substrate type on microbial community structure in vertical-flow constructed wetland treating polluted river water[J].Environmental Science and Pollution Research,2015,22(20):16202-16209. [11] LONG Y,ZHANG Z K,PAN X K,et al.Substrate influences on archaeal and bacterial assemblages in constructed wetland microcosms[J].Ecological Engineering,2016,94(6):437-442. [12] XU R,ZHANG Y,LIU R,et al.Effects of different substrates on nitrogen and phosphorus removal in horizontal subsurface flow constructed wetlands[J].Environmental Science and Pollution Research,2019,26(16):16229-16238. [13] ZHOU Y C,LUO S,YU B H,et al.A comparative analysis for the development and recovery processes of different types of clogging in lab-scale vertical flow constructed wetlands[J].Environmental Science and Pollution Research,2018,25(18):24073-24083. [14] TEIXEIRA D L,MATOS A T,PIMENTEL DE MATOS M,et al.The influence of plant roots on the clogging process and the extractive capacity of nutrients/pollutants in horizontal subsurface flow constructed wetlands[J].Ecological Engineering,2018,120(5):54-60. [15] 王功,魏东洋,方晓航,等.3种湿地填料对水体中氮磷的吸附特性研究[J].环境污染与防治,2012,34(11):9-13. [16] 陈丽丽,赵同科,张成军,等.不同因素对人工湿地基质脱氮除磷效果的影响[J].环境工程学报,2013,7(4):1261-1266. [17] 熊家晴,赵泽宁,葛媛,等.不同基质垂直流人工湿地对高污染河水中磷的去除效果[J].环境化学,2014,33(7):1208-1213. [18] 黄建洪,莫文锐,田森林,等.三种人工湿地填料对氨氮与磷的吸附特性[J].应用化工,2012,41(5):774-780. [19] ZHENG X H,ZHUANG L L,ZHANG J,et al.Advanced oxygenation efficiency and purification of wastewater using a constant partially unsaturated scheme in column experiments simulating vertical subsurface flow constructed wetlands[J].Science of the Total Environment,2020,703:135480. [20] KRAIEMA K,KALLALI H,WAHAB MA,et al.Comparative study on pilots between anammox favored conditions in a partially saturated vertical flow constructed wetland and a hybrid system for rural wastewater treatment[J].Science of the Total Environment,2019,670(3):644-653. [21] PELISSARI C,GUIVERNAU M,VINAS M,et al.Effects of partially saturated conditions on the metabolically active microbiome and on nitrogen removal in vertical subsurface flow constructed wetlands[J].Water Research,2018,141(5):185-195. [22] SILVEIRA D D,BELLI FILHO P,PHILIPPI L S,et al.Influence of partial saturation on total nitrogen removal in a single-stage french constructed wetland treating raw domestic wastewater[J].Ecological Engineering,2015,77(1):257-264. [23] SAEED T,HAQUE I,KHAN T Organic matter and nutrients removal in hybrid constructed wetlands:influence of saturation[J].Chemical Engineering Journal,2019,371(4):154-165. [24] SAEED T,SUN G Pollutant removals employing unsaturated and partially saturated vertical flow wetlands:a comparative study[J].Chemical Engineering Journal,2017,325(5):332-341. [25] CABRED S,GIUNTA R V,BUSALMEN J E,et al.Reduced depth stacked constructed wetlands for enhanced urban wastewater treatment[J].Chemical Engineering Journal,2019,372(4):708-714. [26] BUTTERWORTH E,RICHARDS A,JONES M,et al.Performance of Four Full-Scale Artificially Aerated Horizontal Flow Constructed Wetlands for Domestic Wastewater Treatment[J].Water,2016,8(9):365. [27] WU S B,LEI M,LU Q M,et al.Treatment of pig manure liquid digestate in horizontal flow constructed wetlands:effect of aeration[J].Engineering in Life Sciences,2016,16(3):263-271. [28] FAN J L,LIANG S,ZHANG B,et al.Enhanced organics and nitrogen removal in batch-operated vertical flow constructed wetlands by combination of intermittent aeration and step feeding strategy[J].Environmental Science and Pollution Research,2013,20(4):2448-2455. [29] PAPAEVANGELOU V A,GIKAS G D,VRYZAS Z,et al.Treatment of agricultural equipment rinsing water containing a fungicide in pilot-scale horizontal subsurface flow constructed wetlands[J].Ecological Engineering,2017,101(1):193-200. [30] PAPAEVANGELOU V,GIKAS G D,TSIHRINTZIS V A.Effect of operational and design parameters on performance of pilot-scale horizontal subsurface flow constructed wetlands treating university campus wastewater[J].Environmental Science and Pollution Research,2016,23(15):19504-19519. [31] RANIERI E,GORGOGLIONE A,SOLIMENO A A comparison between model and experimental hydraulic performances in a pilot-scale horizontal subsurface flow constructed wetland[J].Ecological Engineering,2013,60(7):45-49. [32] CHEN Z B,VYMAZAL J,KUSCHK P Effects of tidal operation on pilot-scale horizontal subsurface flow constructed wetland treating sulfate rich wastewater contaminated by chlorinated hydrocarbons[J].Environmental Science and Pollution Research,2017,24(1):1042-1050. [33] ZHONG F,WU J,DAI Y R,et al.Performance evaluation of wastewater treatment using horizontal subsurface flow constructed wetlands optimized by micro-aeration and substrate selection[J].Water Science and Technology,2015,71(9):1317-1324. [34] WU H M,FAN J L,ZHANG J,et al.Intensified organics and nitrogen removal in the intermittent-aerated constructed wetland using a novel sludge-ceramsite as substrate[J].Bioresource Technology,2016,210(1):101-107. [35] DU L,ZHAO Y Q,WANG C,et al.Removal performance of antibiotics and antibiotic resistance genes in swine wastewater by integrated vertical-flow constructed wetlands with zeolite substrate[J].Science of the Total Environment,2020,721:137765. [36] ZHANG X L,ZHAO S J,GAO J T,et al.Microbial action and mechanisms for Cr(Ⅵ) removal performance by layered double hydroxide modified zeolite and quartz sand in constructed wetlands[J].Journal of Environmental Management,2019,246(6):636-646. [37] GUO L C,LV T,HE K,et al.Removal of organic matter,nitrogen and faecal indicators from diluted anaerobically digested slurry using tidal flow constructed wetlands[J].Environmental Science and Pollution Research,2017,24(6):5486-5496. [38] WU S B,ZHANG D X,AUSTIN D,et al.Evaluation of a lab-scale tidal flow constructed wetland performance:oxygen transfer capacity,organic matter and ammonium removal[J].Ecological Engineering,2011,37(11):1789-1795. [39] ZHI W,JI G D.Quantitative response relationships between nitrogen transformation rates and nitrogen functional genes in a tidal flow constructed wetland under C/N ratio constraints[J].Water Research,2014,64(6):32-41. [40] LI L Z,HE C G,JI G D,et al.Nitrogen removal pathways in a tidal flow constructed wetland under flooded time constraints[J].Ecological Engineering,2015,81(4):266-271. [41] XU P,XIAO E R,HE F,et al.High performance of integrated vertical-flow constructed wetland for polishing low C/N ratio river based on a pilot-scale study in Hangzhou,China[J].Environmental Science and Pollution Research,2019,26(22):22431-22449. [42] YI X H,JING D D,WAN J,et al.Temporal and spatial variations of contaminant removal,enzyme activities,and microbial community structure in a pilot horizontal subsurface flow constructed wetland purifying industrial runoff[J].Environmental Science and Pollution Research,2016,23(9):8565-8576. [43] HUSSAIN Z,ARSLAN M,SHABIR G,et al.Remediation of textile bleaching effluent by bacterial augmented horizontal flow and vertical flow constructed wetlands:a comparison at pilot scale[J].Science of the Total Environment,2019,685(5):370-379. [44] HUA G F,KONG J,JI Y Y,et al.Influence of clogging and resting processes on flow patterns in vertical flow constructed wetlands[J].Science of the Total Environment,2018,621(10):1142-1150. [45] ZHOU X,LIANG C L,JIA L X,et al.An innovative biochar-amended substrate vertical flow constructed wetland for low C/N wastewater treatment:impact of influent strengths[J].Bioresource Technology,2018,247(9):844-850. [46] YU L J,CHEN T,XU Y H.Effect of corn cobs as external carbon sources on nitrogen removal in constructed wetlands treating micro-polluted river water[J].Water Science and Technology,2019,79(9):1639-1647. [47] DENG C R,HUANG L,LIANG Y K,et al.Response of microbes to biochar strengthen nitrogen removal in subsurface flow constructed wetlands:microbial community structure and metabolite characteristics[J].Science of the Total Environment,2019,694(3):133687. [48] JI B H,CHEN J Q,MEI J,et al.Roles of biochar media and oxygen supply strategies in treatment performance,greenhouse gas emissions,and bacterial community features of subsurface-flow constructed wetlands[J].Bioresource Technology,2020,302(7):122890. [49] YUAN C B,ZHAO F C,ZHAO X H,et al.Woodchips as sustained-release carbon source to enhance the nitrogen transformation of low C/N wastewater in a baffle subsurface flow constructed wetland[J].Chemical Engineering Journal,2020,392:124840. [50] LIU H Q,HU Z,ZHANG Y J,et al.Microbial nitrogen removal of ammonia wastewater in poly (butylenes succinate)-based constructed wetland:effect of dissolved oxygen[J].Applied Microbiology and Biotechnology,2018,102(21):9389-9398. [51] SHEN Y H,ZHUANG L L,ZHANG J,et al.A study of ferric-carbon micro-electrolysis process to enhance nitrogen and phosphorus removal efficiency in subsurface flow constructed wetlands[J].Chemical Engineering Journal,2019,359(21):706-712. [52] WANG Y M,LIN Z Y,HUANG W,et al.Sulfur and iron cycles promoted nitrogen and phosphorus removal in electrochemically assisted vertical flow constructed wetland treating wastewater treatment plant effluent with high S/N ratio[J].Water Research,2019,151(11):20-30. [53] WEI F,ZHOU Q W,WU W H,et al.Investigating the influence of iron-carbon microelectrolysis on the performance and microbial community of constructed wetlands[J].Water and Environment Journal,2019,34(S1):414-424. [54] LIANG Y,WEI D Y,HU J S,et al.Glyphosate and nutrients removal from simulated agricultural runoff in a pilot pyrrhotite constructed wetland[J].Water Research,2020,168:115154.
点击查看大图
计量
- 文章访问数: 319
- HTML全文浏览量: 63
- PDF下载量: 10
- 被引次数: 0