The influence of hydrodynamic conditions on the generation mechanism of SWI oxygen flux
LV Yi-tao1, ZOU Hao-dong2, ZHAN Hao1, ZHOU Man-yu1, AI Tao1, ZOU Lin-zhi1, ZHOU Tao3, AI Hai-nan1
1. Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400044, China;
2. Chongqing Municipal Research Institute of Design, Chongqing 400020, China;
3. Chongqing Haoyang Water Construction Management Co., Ltd., Chongqing 400020, China
Yulin river, a tributary of the Three Gorges reservoir area, was selected as the research object. The change of SWI oxygen flux under 5hydrodynamic conditions (average velocity 0.00, 0.03, 0.07, 0.12 and 0.20m/s) and the influence of hydrodynamic conditions on the generation mechanism of SWI oxygen flux were measured. As the average velocity increases, SWI oxygen flux increased from 1.197mmol/(m2·h) at 0.00m/s to 43.981mmol/(m2·h) at 0.20m/s. The penetration depth of dissolved oxygen also increased. Oxygen entered deeper sediments and got used by microorganisms and reducing substances thus the oxygen consumption increased. In addition, when the average velocity was low, the oxygen consumption of sediments was dominated by biological oxygen consumption. At 0.00m/s and 0.03m/s, the biological oxygen consumption accounted for 85.3% and 57.7% of the oxygen flux. While when the average velocity was high, the proportion of Chemical oxygen consumption and other oxygen consumption in the chemical process in oxygen flux gradually increased.
吕逸韬, 邹浩东, 詹昊, 周漫宇, 艾涛, 邹林志, 周涛, 艾海男. 水动力对沉积物-水界面氧通量产生机制的影响[J]. 中国环境科学, 2020, 40(2): 798-805.
LV Yi-tao, ZOU Hao-dong, ZHAN Hao, ZHOU Man-yu, AI Tao, ZOU Lin-zhi, ZHOU Tao, AI Hai-nan. The influence of hydrodynamic conditions on the generation mechanism of SWI oxygen flux. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(2): 798-805.
黄岁樑,臧常娟,杜胜蓝,等.pH,溶解氧,叶绿素a之间相关性研究Ⅰ:养殖水体[J]. 环境工程学报, 2011,5(6):1201-1208. Huang S L, Zang C J, Du S L, et al. Study on the relationships among pH, dissolved oxygen and chlorophyll a Ⅰ:Aquaculture water[J]. Chinese Journal of Environmental Engineering, 2011,5(6):1201-1208.
[2]
楼菊青,曹永青,胡跃城,等.环境因子对水蚯蚓呼吸速率的影响研究[J]. 环境科学学报, 2013,33(10):2737-2741. Lou J Q, Cao Y Q, Hu Y C, et al. Effects of environmental factors on the respiration rate of tubificidae[J]. Acta Scientiae Circumstantiae, 2013,33(10):2737-2741.
[3]
李薇.溶解氧水平对富营养化水体底泥氮磷转化影响的研究[D]. 南京:南京理工大学, 2014. Li W, Study on the Impact of DO on the Release of Nitrogen and Phosphorus from Sediment in Eutrophic Water[D]. Nanjing:Nanjing University of Science & Technology, 2014.
[4]
徐进,徐力刚,龚然,等.鄱阳湖沉积物中磷吸附释放特性及影响因素研究[J]. 生态环境学报, 2014,23(4):630-635. Xu J, Xu L G, Gong R, et al. Adsorption and release characteristic of phosphorus and influential factors in Poyang Lake sediment[J]. Ecology and Environmental Sciences, 2014,23(4):630-635.
[5]
史静,俎晓静,张乃明,等.滇池草海沉积物磷形态、空间分布特征及影响因素[J]. 中国环境科学, 2013,33(10):1808-1813. Shi J, Zu X J, Zhang N M, et al. Sediment phosphorus form, space distribution characteristic and influencing factor of Cao Hai in Dian Lake, Yunnan, China[J]. China Environmental Science, 2013,33(10):1808-1813.
[6]
汪淼,严红,焦立新,等.滇池沉积物氮内源负荷特征及影响因素[J]. 中国环境科学, 2015,35(1):218-226. Wang M, Yan H, Jiao L X, et al. Characteristics of internal nitrogen loading and influencing factors in Dianchi Lake sediment[J]. China Environmental Science, 2015,35(1):218-226.
[7]
Sundby B, Anderson L G, Hall P O J, et al. The effect of oxygen on release and uptake of cobalt, manganese, iron and phosphate at the sediment-water interface[J]. Geochimica Et Cosmochimica Acta, 1986,50(6):1281-1288.
[8]
Khalid R, Patrick W, Gambrell R. Effect of dissolved oxygen on chemical transformations of heavy metals, phosphorus, and nitrogen in an estuarine sediment[J]. Estuarine and Coastal Marine Science, 1978, 6(1):21-35.
[9]
Karbassi A, Marefat A. The impact of increased oxygen conditions on heavy metal flocculation in the Sefidrud estuary[J]. Marine Pollution Bulletin, 2017,121(1/2):168-175.
[10]
吴丰昌,万国江,黄荣贵.湖泊沉积物-水界面营养元素的生物地球化学作用和环境效应Ⅰ.界面氮循环及其环境效应[J]. 矿物学报, 1996,(4):403-409. Wu F C, Wan G J, Huang R G. Biogeochemical and environmental effects of nutrient elements in lake sediment-water interface Ⅰ. Interfacial nitrogen cycle and its environmental effects[J]. Acta Mineralogica Sinica, 1996,(4):403-409.
[11]
陈宗团,徐立,洪华生.河口沉积物-水界面重金属生物地球化学研究进展[J]. 地球科学进展, 1997,(5):37-42. Chen Z T, Xu L, Hong H S. Advances in biogeochemistry of heavy metals at sediment-water interface in estuaries[J]. Advances in Earth Science, 1997,(5):37-42.
[12]
马晓磊,徐继荣,张德民,等.城市内河强还原性沉积物耗氧及相关因素研究[J]. 环境科学研究, 2010,23(12):1499-1505. Ma X L, Xu J R, Zhang D M, et al. Research on sediment oxygen demand and related factors for strong reductive sediments in urban rivers[J]. Research of Environmental Sciences, 2010,23(12):1499-1505.
[13]
李文红,陈英旭,孙建平.不同溶解氧水平对控制底泥向上覆水体释放污染物的影响研究[J]. 农业环境科学学报, 2003,(2):170-173. Li W H, Chen Y X, Sun J P. Influence of different dissolved oxygen (DO) amounts on released pollutants from sediment to overlying water[J]. Journal of Agro-Environment Science, 2003,(2):170-173.
[14]
白晓慧,杨万东,陈华林,等.城市内河沉积物对水体污染修复的影响研究[J]. 环境科学学报, 2002,23(5):562-565. Bai X J, Yang W D, Chen H L, et al. Influence of sediment in city river on water pollution restoration[J]. Acta Scientiae Circumstantiae, 2002, 23(5):562-565.
[15]
Bowman G, Delfino J. Sediment oxygen demand techniques:A review and comparison of laboratory and in situ systems[J]. Water Research, 1980,14(5):491-499.
[16]
王继龙.辽河口水质调查及低氧区形成机理研究[D]. 北京:北京化工大学, 2004. Wang J L. Investigation of water quality and sudy on the mechanisms of hypoxia in Liaohe estuaries[D]. Beijing:Beijing University of Chemical Technology, 2004.
[17]
McCarthy M J, Carini S A, Liu Z F, et al. Oxygen consumption in the water column and sediments of the northern Gulf of Mexico hypoxic zone[J]. Estuarine Coastal and Shelf Science, 2013,123:46-53.
[18]
Svensson U, Rahm L. Toward a mathematical model of oxygen transfer to and within bottom sediments[J]. Journal of Geophysical Research:Oceans, 1991,96(C2):2777-2783.
[19]
Gundersen J K, Jorgensen B B. Microstructure of diffusive boundary layers and the oxygen uptake of the sea floor. Nature,1990,345(6276):604-607.
[20]
Berg P, Roey H, Janssen F, et al. Oxygen uptake by aquatic sediments measured with a novel non-invasive eddy correlation technique[J]. Marine Ecology Progress, 2003,261(8):75-83.
[21]
Lens P, Grotenhuis T, Malina G, et al. Soil and sediment remediation-mechanisms, technologies and applications[M]. IWA Publishing, 2005.
[22]
鲁如坤.土壤农业化学分析方法[M]. 北京:中国农业科技出版社, 2000. Lu R S, Chemical Analysis Method of Agricultural Soil[M]. Beijing:China Agriculture Science and Technique Press, 2000.
[23]
郑阳华,邹浩东,何强,等.水动力条件对沉积物-水界面氧通量的影响[J]. 湖泊科学, 2018,30(6):1552-1559. Zheng Y H, Zou H D, He Q, et al. The influence of hydrodynamic conditions on the oxygen flux of Sediment-Water Interface[J]. Journal of Lake Sciences, 2018,30(6):1552-1559.
[24]
雒文生,李莉红,贺涛.水体大气复氧理论和复氧系数研究进展与展望[J]. 水利学报, 2003,(11):64-70. Luo W S, Li L H, He T. Advances and prospects in the research of water reaeration theory and reaeration coefficient[J]. Journal of Hydraulic Engineering, 2003,(11):64-70.
[25]
吴金浩,刘桂英,王年斌,等.辽东湾北部海域表层沉积物氧化还原电位及其主要影响因素[J]. 沉积学报, 2012,30(2):333-339. Wu J H, Liu G Y, Wang N B, et al. The Eh in surface sediments in the Northern of Liaodong Bay and its main influencing factors[J]. Acta Sedimentologica Sinica, 2012,30(2):333-339.
[26]
邹建军,石学法,刘季花,等.长江口及其邻近海域孔隙水地球化学特征[J]. 地球科学, 2010,39(6):580-589. Zou J J, Shi X F, Liu J H, et al. Geochemical characteristics of pore water in the Yangtze Estuary and adjacent areas[J]. Geochimica, 2010, 39(6):580-589.
[27]
Konovalov S K, Luther G W, Yucel M. Porewater redox species and processes in the Black Sea sediments[J]. Chemical Geology, 2007, 245(3/4):254-274.
[28]
丰卫华,王志富,张荣保,等.宁德海域表层沉积物氧化还原环境特征及其影响因素[J]. 海洋环境科学, 2016,35(6):882-887+907. Feng W H, Wang Z F, Zhang R B, et al. The environment characteristics of redox in the surface sediments of Ningde coastal sea area in relation to influence factors[J]. Marine Environmental Science, 2016,35(6):882-887+907.
[29]
Warnken K W, Santschi P H, Roberts K A, et al. The cycling and oxidation pathways of organic carbon in a shallow estuary along the Texas Gulf Coast[J]. Estuarine Coastal & Shelf Science, 2008,76(1):69-84
