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| Characteristics of suspended particulate matter and its impacts on water quality in pre-dam system of Lake Changdang |
| ZHANG Song-he1,2, DUAN Ru-fei1,2, LUO Min1,2, CHEN Hui3, YANG Jian3 |
1. College of Environment, Hohai University, Nanjing 210098, China;
2. Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098, China;
3. Jiangsu Jintan Changdang Lake Tourism Resort Management Office, Changzhou 213000, China |
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Abstract In order to study the characteristics of suspended particulate matter (SPM) in the pre-dam and its potential impact on water quality, we investigated the spatial distribution of SPM and nutrients contents in overlying water in the upstream, midstream and downstream areas of the Dapu Harbor pre-dam system in Lake Changdang in low (December, 2022), medium (April, 2023) and high flow season (August, 2023). We also conducted an in-situ experiment to explore the interception mechanism in pre-dam system in high flow season. The results showed that about 46.42% of NH4+-N, 51.59% of TN and 36.83% TP were removed from overlying water through the pre-dam system, which play an import role on pollutes reduction. It should be noted that SPM sizes had significant effects on TOC (P=0.018) and TN concentration (P=0.011) and carbon and nitrogen contents in SPM increased with the increase of SMP sizes in surface layer of water column. The in-situ experiment revealed that TN and TP content were 2.33~5.25times and 4.53~5.72times higher in captured SPM from the surface and bottom layers of water column than in the free water body, respectively, and N and P concentrations in the water column were negatively correlated with the TN and TP concentrations in SPM, respectively. These data demonstrate that SPM as carrier can adsorb and transport pollutes, and SPM has a great influence on pollutes transformation through adsorption and precipitation. This study provided sound data that pre-dam system can improve water quality through SPM removal, especially for the treatment of high turbid water in inlet rivers of lake.
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Received: 20 May 2024
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[1] 刘良电.山美水库前置库技术运用及效益分析[J]. 水利科技, 2023,(3):4-5,48. Liu L D. Technical application and benefit analysis of front reservoir of Shanmei Reservoir [J]. Hydraulic Science and Technology, 2023,(3): 4-5,48.
[2] Condie S A, Webster I T. Stratification and circulation in a shallow turbid waterbody [J]. Environmental Fluid Mechanics, 2002,2(3): 177-196.
[3] Qin S, Zhong M, Lin B, et al. Roles of Floating Islands in Aqueous Environment Remediation: Water Purification and Urban Aesthetics [J] Water, 2023,15(6):1134.
[4] Li W J, Wang Z Y, Huang H J. Relationship between the southern Yellow Sea Cold Water Mass and the distribution and composition of suspended particulate matter in summer and autumn seasons [J]. Journal of Sea Research, 2019,154:101812.
[5] 刘海霞,李素霞,刘广龙,等.基于复合指纹图谱和贝叶斯模型的茅尾海悬浮颗粒物源解析[J]. 中国环境科学, 2022,42(6):2844-2851. Liu H X, Li S X, Liu G L, et al. Analysis of the source of suspended particulate matter in the Maowei Sea based on composite fingerprint map and Bayesian model [J]. China Environmental Science, 2022, 42(6):2844-2851.
[6] Li S Q, Zhu M C, Huang W, et al. On sediment incipient motion of marine cohesive sediments with different bulk densities [J]. Geomorphology, 2023,441:108918.
[7] Raymond P A, Hartmann J, Lauerwald R, et al. Global carbon dioxide emissions from inland waters [J]. Nature, 2013,503(7476):355-359.
[8] Zhou Z N, Yan R, Liu X, et al. Suspended particulate matter <2.5μm (SPM2.5) in shallow lakes: Sedimentation resistance and bioavailable phosphorus enrichment after sediment resuspension [J]. Science of The Total Environment, 2024,912:168780.
[9] 刘维淦,林琪,张科,等.太湖流域长荡湖近百年生态环境演变过程[J]. 湖泊科学, 2022,34(2):675-683. Liu W G, Lin Q, Zhang K, et al. Eco-environmental evolutionprocess during the past century in Lake Changdang, Lake Taihu Basin [J]. Journal of Lake Sciences, 2022,34(2):675-683.
[10] HJ/T 399-2007水质化学需氧量的测定快速消解分光光度法[S]. HJ/T 399-2007 Water quality-Determination of the chemical oxygen demand-Fast digestion-Spectrophotometric method [S].
[11] HJ 535-2009水质氨氮的测定纳氏试剂分光光度法[S]. HJ 535-2009 Water quality-Determination of ammonia nitrogen- Nessler’s reagent spectrophotometry [S].
[12] HJ 636-2012水质总氮的测定碱性过硫酸钾消解紫外分光光度[S]. HJ 636-2012 Water quality-Determination of total nitrogen- Alkaline potassium persulfate digestion UV spectrophotometric method [S].
[13] GB 11893-89水质总磷的测定钼酸铵分光光度法[S]. GB 11893-89 Water quality-Determination of total phosphorus- Ammonium molybdate spectrophotometric method [S].
[14] 季恺悦,李琦,单保庆,等.白洋淀沼泽区与开阔水域区颗粒物组分特征与沉降通量研究[J]. 环境科学学报, 2022,42(8):271-281. Ji K Y, Li Q, Shan B Q, et al. Study on deposition flux and components characteristic of particulates in marsh and open water area of Baiyangdian Lake [J]. Acta Scientiae Circumstantiae, 2022,42(8): 271-281.
[15] Han H W, Rafiq M K, Zhou T Y, et al. A critical review of clay-based composites with enhanced adsorption performance for metal and organic pollutants [J]. Journal of Hazardous Materials, 2019,369:780- 796.
[16] 王正勇,张代超,杨诚.熊河水库表层沉积物氮、磷及有机物监测分析评价[J]. 科技视界, 2020,(5):3-5. Wang Z Y, Zhang D C, Yang C. Monitoring Analysis and Evaluation of nitrogen, phosphorus and organic pollution in the surface sediments of the Xionghe Reservoir [J]. Science & Technology Vision, 2020,(5): 3-5.
[17] 钱宝,刘凌,肖潇.土壤有机质测定方法对比分析[J]. 河海大学学报(自然科学版), 2011,39(1):34-38. Qian B, Liu L, Xiao X. Comparative tests on different methods for content of soil organic matter [J]. Journal of Hohai University (Natural Sciences), 2011,39(1):34-38.
[18] Duan C X, Zhang Q, Li J L, et al. Partial nitrification response to dissolved oxygen variation and aerobic starvation: Kinetics and microbial community analyses [J]. Chemical Engineering Journal, 2024,481:148621.
[19] 张毅敏,段金程,晁建颖,等.河口前置库系统在滆湖富营养化控制中的应用研究[J]. 生态与农村环境学报, 2013,29(3):273-277. Zhang Y M, Duan J C, Chao J Y, et al. Application of estuary pre-dam to eutrophication control in Gehu Lake [J]. Journal of Ecology and Rural Environment, 2013,29(3):273-277.
[20] 余景芝,王烜,蔡剑英,等.水动力条件对浅水湖泊沉积物氮磷释放的影响[J]. 中国环境科学, 2023,43(8):4219-4228. Yu J Z, Wang X, Cai J Y, et al. Effects of hydrodynamic conditions on nitrogen and phosphorus release from sediments in shallow lakes [J]. China Environmental Science, 2023,43(8):4219-4228.
[21] Yuan D H, Zhao Y X, Guo X J, et al. Impact of hydrophyte decomposition on the changes and characteristics of dissolved organic matter in lake water [J]. Ecological Indicators, 2020,116:106482.
[22] 史鹏程,朱广伟,杨文斌,等.新安江水库悬浮颗粒物时空分布、沉降通量及其营养盐效应[J]. 环境科学, 2020,41(5):2137-2148. Shi P C, Zhu G W, Yang W B, et al. Spatial-temporal Distribution of Suspended Solids and Its Sedimentation Flux and Nutrients Effects in Xin'anjiang Reservoir, China [J]. Environmental Science, 2020,41(5): 2137-2148.
[23] 张庆强,周潮晖,傅建文,等.引滦输水过程中悬浮物的沉降迁移特征[J]. 水资源与水工程学报, 2016,27(3):91-94. Zhang Q Q, Zhou C H, Fu J W, et al. Settlement and transport characteristics of suspended solids in process of Luanhe-Tianjin water diversion [J]. Journal of Water Resources and Water Engineering, 2016,27(3):91-94.
[24] 张乐天,雷霄,张文强,等.白洋淀悬浮颗粒物的微观形貌及结构特征[J]. 环境科学学报, 2023,43(9):142-151. Zhang L T, Lei X, Zhang W Q, et al. Microscopic morphology and structural characteristics of suspended particle matter in Baiyangdian Lake [J]. Acta Scientiae Circumstantiae, 2023,43(9):142-151.
[25] 江辉,谢盛鑫,刘瑶,等.鄱阳湖丰水期水体悬浮颗粒物粒径空间分布特征[J]. 南昌工程学院学报, 2018,37(6):43-47. Jiang H, Xie S X, Liu Y, et al. Spatial distribution of particle size of suspended particulate matters in Poyang Lake during wet season [J]. Journal of Nanchang Institute of Technology, 2018,37(6):43-47.
[26] 段晓勇,高飞,刘金庆,等.南流江口陆源物质输送的季节性差异及其影响[J]. 中国环境科学, 2023,43(2):800-808. Duan X Y, Gao F, Liu J Q, et al. Seasonal differences of terrigenous material transport in Nanliu Estuary and their effects [J]. China Environmental Science, 2023,43(2):800-808.
[27] 郭俊锐,李大鹏,刘焱见.扰动对悬浮颗粒物粒径及上覆水中磷形态分布的影响[J]. 环境科学, 2016,37(4):1422-1426. Guo J R, Li D P, Liu Y J. Impacts of sediment disturbance on the distribution of suspended particle size and phosphorus [J]. Environmental Science, 2016,37(4):1422-1426. |
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