垂直流人工湿地系统净化污水厂尾水脱氮效果

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1629 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract Three groups of vertical flow constructed wetlands, filled with coconut fiber and ceramsite (experimental group 1, YTCW), gravel and ceramsite (experimental group 2, LTCW), and gravel quartz sand (control group, CCW), respectively, were employed to treat synthetic tailwater of the sewage plant. Nitrogen pollutants removal efficiency and transformation mechanisms in winter and summer were explored. The higher removal efficiency of ammonium and nitrate, as well as lower emission flux of nitrous oxide, were observed in summer than in winter. In winter, the removal efficiency of ammonia nitrogen increased by 23.8% (YTCW) and 26.9% (LTCW) compared with CCW. Nitrate removal efficiency in the experimental group was 32.2%(YTCW) and 34.0%(LTCW) higher than those in CCW. The average nitrous oxide emission flux in a typical cycle was 0.18mg/(m²·h) (YTCW), 0.03mg/(m²·h) (LTCW) and 1.17mg/(m²·h) (CCW), respectively. The results of high-throughput sequencing showed that the relative abundance of nitrogen removal functional microorganisms was increased in experimental groups than control, which could improve the nitrogen removal efficiency of constructed wetlands under low temperatures.

Key words： vertical flow constructed wetland ceramsite nitrogen removal nitrous oxide

Received: 09 January 2023

PACS:

X52

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	HE Qiang
	HU Shu-shan
	XIANG Ze-yi
	ZHU Yue
	ZHANG Ling-ling
	YANG Yu-jing
	CHENG Cheng

Cite this article:

HE Qiang,HU Shu-shan,XIANG Ze-yi等. Study on the nitrogen removal ability of vertical flow constructed wetland treating tailwater of sewage plant[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 3956-3965.

URL:

http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I8/3956

[1]	中华人民共和国生态环境部.2020年中国环境生态年报[R]. 2020. Ministry of Ecology and Environment. 2020 China environmental ecology annual report[R]. 2020.
[2]	Hernández-del Amo E, Bañeras L. Effects of high nitrate input in the denitrification-DNRA activities in the sediment of a constructed wetland under varying C/N ratios[J]. Ecological Engineering, 2021, 159:106098.
[3]	常尧枫,谢嘉玮,谢军祥,等.城镇污水处理厂提标改造技术研究进展[J].中国给水排水, 2022,38(6):20-28. Chang Yao-feng, Xie Jia-wei, Xie Jun-xiang, et al.Research progress on upgrading and reconstruction technology of urban sewage treatment plants[J]. China water and wastewater,2022,38(6):20-28.
[4]	Zhao Z, Xu C, Zhang X, et al. Addition of iron materials for improving the removal efficiencies of multiple contaminants from wastewater with a low C/N ratio in constructed wetlands at low temperatures[J]. Environmental Science and Pollution Research, 2019,26:11988-11997.
[5]	Yang Y, Zhao Y, Liu R, et al. Global development of various emerged substrates utilized in constructed wetlands[J]. Bioresource technology, 2018,261:441-452.
[6]	Varma M, Gupta A K, Ghosal P S, et al. A review on performance of constructed wetlands in tropical and cold climate:Insights of mechanism, role of influencing factors, and system modification in low temperature[J]. Science of the Total Environment, 2021,755:142540.
[7]	Ji M, Hu Z, Hou C, et al. New insights for enhancing the performance of constructed wetlands at low temperatures[J]. Bioresource technology, 2020,301:122722.
[8]	Li J, Fan J, Zhang J, et al. Preparation and evaluation of wetland plant-based biochar for nitrogen removal enhancement in surface flow constructed wetlands[J]. Environmental Science and Pollution Research, 2018,25:13929-13937.
[9]	Cao W, Wang Y, Sun L, et al. Removal of nitrogenous compounds from polluted river water by floating constructed wetlands using rice straw and ceramsite as substrates under low temperature conditions[J]. Ecological Engineering, 2016,88:77-81.
[10]	Cao W, Zhang Y. Removal of nitrogen (N) from hypereutrophic waters by ecological floating beds (EFBs) with various substrates[J]. Ecological engineering, 2014,62:148-152.
[11]	韩晓旭,和雪杰,李亮,等.基于天然椰丝纤维填料的低氨氮废水SNAP系统自然挂膜构建[J].环境工程学报, 2022,16(1):272-280. Han Xiao-xu, He Xue-jie, Li Liang,et al. Construction of natural film formation in SNAP system of low ammonia nitrogenwastewater based on natural coconut fiber filler[J]. Journal of Environmental Engineering, 2022,16(1):272-280.
[12]	Hoagland D R, Arnon D I. The water-culture method for growing plants without soil[J]. Circular. California agricultural experiment station, 1950,347.
[13]	GB 18918-2002城镇污水处理厂污染物排放标准[S]. GB 18918-2002 Discharge standard of pollutants for municipal wastewater treatment plant[S].
[14]	潘傲,张智,孙磊,等.种植不同植物的表面流人工湿地净化效果和微生物群落差异分析[J].环境工程学报, 2019,13(8):1918-1929. Pan Ao, Zhang Zhi, Sun Lei, et al. Purification effects and microbial community differences of the surface-flow constructed wetlands with different vegetation plantation[J]. Chinese Journal of Environmental Engineering, 2019,13(8):1918-1929.
[15]	Zou J L, Xu G R, Pan K, et al. Nitrogen removal and biofilm structure affected by COD/NH4+-N in a biofilter with porous sludge-ceramsite[J]. Separation and purification technology, 2012,94:9-15.
[16]	肖海文.城市径流特征与人工湿地处理技术研究[D].重庆:重庆大学, 2010. Xiao Hai-wen. Study on characteristic of urban runoffand the technology of constructed wetland for urban runoff treatment[D]. Chongqing:Chongqing University, 2010.
[17]	徐凤英,樊科峰,周炯,等.低温下改良SBBR脱氮除磷效能及微生物种群研究[J].中国给水排水, 2022,38(9):6. Xu Feng-ying, Fan Ke-feng,Zhou Jiong, et al. Nitrogen and phosphorous removal performance and microbial community of modified SBBR at low temperature[J]. China water and wastewater, 2022,38(9):6.
[18]	GB 3838-2002地表水环境质量标准[S]. GB 3838-2002 Environmental quality standards for surface water[S].
[19]	孟盼盼.陶粒基人工湿地处理生活污水及新型陶粒的开发研究[D].济南:山东大学, 2015. Meng Pan-pan. Study of light-weight aggregates-based constructed wetlands for domestic wastewater treatment and development of sludge media[D]. Jinan:Shandong University, 2015.
[20]	方伟成,王静,周新萍.三种填料吸附磷的特性及其影响因素[J].湿地科学, 2018,16(3):341-346. Fang W, Wang J, Zhou X. Characteristics of phosphorus adsorption by three kinds of fillers and their influence factors[J]. Wetland Science, 2018,16(3):341-346.
[21]	Fu G, Wu J, Han J, et al. Effects of substrate type on denitrification efficiency and microbial community structure in constructed wetlands[J]. Bioresource Technology, 2020,307:123222.
[22]	Zheng X, Jin M, Xu H, et al. Enhanced simultaneous nitrogen and phosphorus removal in a denitrifying biological filter using waterworks sludge ceramsite coupled with iron-carbon[J]. International Journal of Environmental Research and Public Health, 2019,16(15):2646.
[23]	邹旭青,郝庆菊,赵茂森,等.铁矿石和生物炭添加对潜流人工湿地污水处理效果及温室气体排放的影响[J].环境工程学报, 2021, 15(2):588-598. Zou Xu-qing, Hao Qing-ju, Zhao Mao-sen, et al. Effects of hematite and biochar addition on sewage treatment and greenhouse gases emissions in subsurface flow constructed wetland[J]. Chinese Journal of Environmental Engineering, 2021,15(2):588-598.
[24]	Liu Y, Peng L, Ngo H H, et al. Evaluation of nitrous oxide emission from sulfide-and sulfur-based autotrophic denitrification processes[J]. Environmental Science & Technology, 2016,50(17):9407-9415.
[25]	Dong L, Qi Z, Li M, 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.
[26]	Hu Z, Zhang J, Li S, et al. Effect of anoxic/aerobic phase fraction on N2O emission in a sequencing batch reactor under low temperature[J]. Bioresource technology, 2011,102(9):5486-5491.
[27]	黄锦楼,陈琴,许连煌.人工湿地在应用中存在的问题及解决措施[J].环境科学, 2013,34(1):401-408. Huang Jin-lou, Chen Qin, Xu Lian-huang. Problems and countermeasures in the application of constructed wetlands[J]. Enverioment Science, 2013,34(1):401-408.
[28]	Chand N, Kumar K, Suthar S. Enhanced wastewater nutrients removal in vertical subsurface flow constructed wetland:Effect of biochar addition and tidal flow operation[J]. Chemosphere, 2022,286:131742.
[29]	Zhou X, Wang X, Zhang H, et al. Enhanced nitrogen removal of low C/N domestic wastewater using a biochar-amended aerated vertical flow constructed wetland[J]. Bioresource Technology, 2017,241:269-275.
[30]	Huang L, Gao X, Guo J, et al. A review on the mechanism and affecting factors of nitrous oxide emission in constructed wetlands[J]. Environmental earth sciences, 2013,68:2171-2180.
[31]	吴海明.人工湿地的碳氮磷循环过程及其环境效应[D].济南:山东大学, 2014. Wu Hai-ming. Cyclic processes of carbon, nitrogen and phosphorusin constructed wetlands and its environmental effects[D]. Jinan:Shandong University, 2014.
[32]	Liu C, Li X, Yang Y, et al. Double-layer substrate of shale ceramsite and active alumina tidal flow constructed wetland enhanced nitrogen removal from decentralized domestic sewage[J]. Science of The Total Environment, 2020,703:135629.
[33]	Han Z, Dong J, Shen Z, et al. Nitrogen removal of anaerobically digested swine wastewater by pilot-scale tidal flow constructed wetland based on in-situ biological regeneration of zeolite[J]. Chemosphere, 2019,217:364-373.
[34]	Zhang Y, Ji Z, Pei Y. Nutrient removal and microbial community structure in an artificial-natural coupled wetland system[J]. Process Safety and Environmental Protection, 2021,147:1160-1170.
[35]	王学华,黄俊,宋吟玲,等.高效水解酸化UASB活性污泥的菌群结构分析[J].环境科学学报, 2014,34(11):2779-2784. Wang Xue-huang, Huang Jun, Song Yin-ling, et al. Analysis on bacterial community structure in UASB reactor's sludge with hydrolysis acidification capacity of a dyeing wastewater treatment process[J]. Acta Scientiae Circumstantiae, 2014,34(11):2779-2784.
[36]	Yang Q, Zhao N, Wang H, et al. Electrochemical and biochemical profiling of the enhanced hydrogenotrophic denitrification through cathode strengthening using bioelectrochemical system (BES)[J]. Chemical Engineering Journal, 2020,381:122686.
[37]	Park H I, Choi Y J, Pak D. Autohydrogenotrophic denitrifying microbial community in a glass beads biofilm reactor[J]. Biotechnology letters, 2005,27:949-953.
[38]	田海龙.MABR脱氮除碳效能及微生物膜特性研究[D].天津:天津大学, 2015. Tian Hai-long. Study on the nitrogen removal and carburization efficiency of MABR and the characteristics of microbial membranes[D]. Tianjin:Tianjin University, 2015.
[39]	贾林春,宋宾学,张羽,等.地下水硝酸盐氮污染修复技术研究进展[J].中国资源综合利用, 2022,40(6):97-99. Jia Lin-chun, Song Bing-xue, Zhang Yu, et al. Research progress on remediation technology of groundwater nitrate nitrogen pollution[J]. China Resources Comprehensive Utilization, 2022,40(6):97-99.
[40]	Idi A, Ibrahim Z, Mohamad S E, et al. Biokinetics of nitrogen removal at high concentrations by Rhodobacter sphaeroides ADZ101[J]. International Biodeterioration & Biodegradation, 2015,105:245-251.