扰动对城市河道底泥污染物释放影响
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摘要
河流外源截污与治理后,底泥污染物的释放成为河道污染的主要因素之一。基于动态模拟实验,研究不同扰动条件和不同底泥污染物浓度,对底泥中TN、NH_3-N、TP和COD释放的影响。研究结果表明:高扰动强度增加了TN和COD的释放通量,缩短了TP的吸附/解吸平衡时间,对其他指标影响较小;底泥污染物浓度与污染物平衡释放量的相关性较弱,仅TN的平衡释放量与底泥浓度的拟合关系较好(最大R~2为0. 798)。
With the external sewage interception and sewage treatment,the release of pollutants from sediments became one of the main factors of river pollution. Based on dynamic simulation experiments,this study researched the effects of different physical perturbing and different sediment pollutant concentrations on the release of TN、NH_3-N、TP and COD from the sediment. The results showed that high intensity perturbation increased the release flux of TN and COD,and shortened the release equilibrium time of TP,but had little effect on other pollutants. The correlation between the pollutants concentration of sediment and the equilibrium release of sediment was weak,while only the equilibrium release of TN had a good fitting relationship with the sediment concentration( the maximum R~2 was only 0. 798).
With the external sewage interception and sewage treatment,the release of pollutants from sediments became one of the main factors of river pollution. Based on dynamic simulation experiments,this study researched the effects of different physical perturbing and different sediment pollutant concentrations on the release of TN、NH_3-N、TP and COD from the sediment. The results showed that high intensity perturbation increased the release flux of TN and COD,and shortened the release equilibrium time of TP,but had little effect on other pollutants. The correlation between the pollutants concentration of sediment and the equilibrium release of sediment was weak,while only the equilibrium release of TN had a good fitting relationship with the sediment concentration( the maximum R~2 was only 0. 798).
引文
[1]宁梓洁,王鑫.黑臭水体治理技术研究进展[J].环境工程,2018,36(8):26-29,73.
[2]吴世红.城市黑臭水体遥感监测关键技术研究进展[J].环境工程学报,2019,13(6):1-11.
[3]李文超.曝气扰动下城市黑臭河道底泥内源硫、铁行为与氮循环耦合作用研究[D].上海:华东师范大学,2016.
[4]张一璠.曝气造流对城市黑臭河道内源氮营养盐行为的影响效应及其机制研究[D].上海:华东师范大学,2017.
[5]钟小燕,王船海,庾从蓉,等.流速对太湖河道底泥泥沙、营养盐释放规律影响实验研究[J].环境科学学报,2017,37(8):2862-2869.
[6]李勇,李大鹏,黄勇.沉积物扰动频率对悬浮物中形态磷数量分布的影响[J].环境科学与技术,2011,34(10):19-23,34.
[7]李大鹏,黄勇.底泥扰动状态下内源磷释放过程模拟研究[J].环境工程学报,2010,4(5):993-997.
[8]吴比,黄毅华,马君妍,等.河道水体水质对底泥污染物释放的影响[J].净水技术,2018,37(9):132-138.
[9]丁艳青,朱广伟,秦伯强,等.波浪扰动对太湖底泥磷释放影响模拟[J].水科学进展,2011,22(2):273-278.
[10]谢民争,陈倩,党晨原,等.水库底泥氮释放及其好氧微生物脱氮研究[J].北京大学学报(自然科学版),2019,55(3):561-570.
[11]高月香,张毅敏,张永春.流速对太湖底泥污染物释放的影响[J].环境工程,2014,32(8):10-14.
[12]雷晓玲,韩亚鑫,冉兵,等.环境因子对三峡库区底泥污染物释放的影响研究[J].环境工程,2016,34(1):47-50.
[13]朱红伟,尚晓,张坤,等.疏浚水流扰动作用下的河道底泥污染物释放效应[J].净水技术,2014,33(2):81-85.
[14]张一璠,陈玉霞,何岩,等.水体扰动对黑臭河道内源氮营养盐赋存形式的影响[J].华东师范大学学报(自然科学版),2013,(2):1-10.
[15]雷晓玲,彭小兰,黄媛媛,等.抓斗式疏浚设备对底泥污染物释放规律的研究[J].环境工程,2015,33(4):97-99.
[16]王道增,周旭,朱红伟,等.再悬浮底泥污染物在水体中的分层释放特征[J].水动力学研究与进展A辑,2014,29(5):592-598.
[17]李志洪.曝气扰动模式对黑臭河道底泥内源营养盐行为的影响作用及氮转化功能菌群响应规律研究[D].上海:华东师范大学,2015.
[2]吴世红.城市黑臭水体遥感监测关键技术研究进展[J].环境工程学报,2019,13(6):1-11.
[3]李文超.曝气扰动下城市黑臭河道底泥内源硫、铁行为与氮循环耦合作用研究[D].上海:华东师范大学,2016.
[4]张一璠.曝气造流对城市黑臭河道内源氮营养盐行为的影响效应及其机制研究[D].上海:华东师范大学,2017.
[5]钟小燕,王船海,庾从蓉,等.流速对太湖河道底泥泥沙、营养盐释放规律影响实验研究[J].环境科学学报,2017,37(8):2862-2869.
[6]李勇,李大鹏,黄勇.沉积物扰动频率对悬浮物中形态磷数量分布的影响[J].环境科学与技术,2011,34(10):19-23,34.
[7]李大鹏,黄勇.底泥扰动状态下内源磷释放过程模拟研究[J].环境工程学报,2010,4(5):993-997.
[8]吴比,黄毅华,马君妍,等.河道水体水质对底泥污染物释放的影响[J].净水技术,2018,37(9):132-138.
[9]丁艳青,朱广伟,秦伯强,等.波浪扰动对太湖底泥磷释放影响模拟[J].水科学进展,2011,22(2):273-278.
[10]谢民争,陈倩,党晨原,等.水库底泥氮释放及其好氧微生物脱氮研究[J].北京大学学报(自然科学版),2019,55(3):561-570.
[11]高月香,张毅敏,张永春.流速对太湖底泥污染物释放的影响[J].环境工程,2014,32(8):10-14.
[12]雷晓玲,韩亚鑫,冉兵,等.环境因子对三峡库区底泥污染物释放的影响研究[J].环境工程,2016,34(1):47-50.
[13]朱红伟,尚晓,张坤,等.疏浚水流扰动作用下的河道底泥污染物释放效应[J].净水技术,2014,33(2):81-85.
[14]张一璠,陈玉霞,何岩,等.水体扰动对黑臭河道内源氮营养盐赋存形式的影响[J].华东师范大学学报(自然科学版),2013,(2):1-10.
[15]雷晓玲,彭小兰,黄媛媛,等.抓斗式疏浚设备对底泥污染物释放规律的研究[J].环境工程,2015,33(4):97-99.
[16]王道增,周旭,朱红伟,等.再悬浮底泥污染物在水体中的分层释放特征[J].水动力学研究与进展A辑,2014,29(5):592-598.
[17]李志洪.曝气扰动模式对黑臭河道底泥内源营养盐行为的影响作用及氮转化功能菌群响应规律研究[D].上海:华东师范大学,2015.