扰动频率对底泥吸附和固定磷的影响
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- 英文论文题名：Influence of Disturbance frequency on the adsorption and immobilization of phosphorus on the sediments
- 论文作者：王尚 ; 李大鹏
- 英文论文作者：WANG Shang ; LI Da-peng ; School of Environmental Science and Engineering ; Suzhou University of Science and Technology
- 年：2013
- 作者机构：苏州科技学院环境科学与工程学院;
- 论文关键词：底泥 ; 吸附 ; 扰动 ; 磷形态 ; 重污染河道
- 英文论文关键词：Sediment ; Adsorption ; Disturbance ; Phosphorus form ; Heavily Polluted Canal
- 会议召开时间：2013-12-26
- 会议录名称：2013年水资源生态保护与水污染控制研讨会论文集
- 语种：中文
- 分类号：X52
- 学会代码：HJKP
- 会议名称：2013年水资源生态保护与水污染控制研讨会
- 会议地点：中国黑龙江哈尔滨
- 主办单位：中国环境科学学会、环境保护部环境规划院、哈尔滨工业大学、哈尔滨师范大学、中国科学院南京地理与湖泊研究所
- 学会名称：中国环境科学学会
- 页数：5
- 文件大小：1015k
- 原文格式：D
- 会议级别：全国
摘要
以重污染河道底泥和上覆水为材料,研究了周期性加入外源磷条件下,不同扰动频率下底泥吸附和固定磷的作用机制.结果表明,增加扰动频率显著增加了了外源磷吸附量.尽管加入的磷以溶解性磷酸盐形式存在,但扰动强化了溶解态磷向颗粒态磷的转化,从而降低磷的生物可利用性.内源磷形态分析表明,弱吸附态磷(NH4Cl-P)均呈降低趋势,而铁铝结合态磷(Fe/Al-P)、钙结合态磷(HCl-P)则呈增加趋势.增加扰动频率可以增加生物难利用磷占总磷的比例.说明增加扰动频率,有利于底泥对外源磷的吸附以及促进生物可利用态磷向难被生物利用态磷的转化.
The mechanism of phosphorus(P) adsorption and immobility under different disturbance frequency was investigated in laboratory. The sediments and water were taken from an inner-city heavily polluted canal.Addition of KH2PO4 into the experimental units were made similar to the external P input into the canal and carried out continuously. Results show that P adsorption amount increased with the disturbance frequency increase. The addition of KH2PO4 into the overlying water is main dissolved inorganic P(DIP), but sediment disturbance could promote the transformation of P from dissolved P to particulate P, indicating the bioavailability of P decrease. Sedimentary P fractionation shows that the NH4Cl-P decreased and the Fe/Al-P and the HCl-P increased. The ratio of nonbioavailable P to total P in the sediments increased with the disturbance frequency increase. It is suggested that increasing disturbance frequency is favor of P adsorption on the sediments and promotion of the transformation of P from bioavailable P to nonbioavailable P in the sediments.
The mechanism of phosphorus(P) adsorption and immobility under different disturbance frequency was investigated in laboratory. The sediments and water were taken from an inner-city heavily polluted canal.Addition of KH2PO4 into the experimental units were made similar to the external P input into the canal and carried out continuously. Results show that P adsorption amount increased with the disturbance frequency increase. The addition of KH2PO4 into the overlying water is main dissolved inorganic P(DIP), but sediment disturbance could promote the transformation of P from dissolved P to particulate P, indicating the bioavailability of P decrease. Sedimentary P fractionation shows that the NH4Cl-P decreased and the Fe/Al-P and the HCl-P increased. The ratio of nonbioavailable P to total P in the sediments increased with the disturbance frequency increase. It is suggested that increasing disturbance frequency is favor of P adsorption on the sediments and promotion of the transformation of P from bioavailable P to nonbioavailable P in the sediments.
引文
[1]Peng J F,Wang B Z,Song S H.Adsorption and release of phosphorus in the surface sediment of a wastewater stabilization pond[J].Ecological Engineering,2007,31(2):92-97.
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[4]House W A,Denison F H,Armitage P D.Comparison of the uptake of inorganic phosphorus to a suspended and stream bed-sediment[J].Water Research,1995,29(3):767-779.
[5]Qin B Q,Hu W P,Gao G,et al.Dynamics of the sediment resuspension and the conceptual schema of nutrient release in the large shallow Lake Taihu,China[J].Chinese Science Bulletin,2004,49(1):54-64.
[6]House W A,Denision F H.Factors influencing the measurement of equilibrium phosphate concentrations in river sediments[J].Water Research,2000,34(4):1187-1200.
[7]Reddy K R,Diaz O A,Scinto L J,et al.Phosphorus dynamics in selected wetlands and streams of the lake Okeechobee Basin[J].Ecological Engineering,1995,5:183-207.
[8]Reddy K R,Flaig E G,Graetz D A.Phosphorus storage capacity of uplands,wetlands and streams of the Lake Okeechobee Watershed,Florida[J].Agriculture Ecosystems andE nvironment,1996,59:203-216.
[9]李大鹏,黄勇,李伟光.底泥再悬浮状态下生物有效磷形成机制研究[J].环境科学,2008,29(7):1824-1830.
[10]李大鹏,黄勇,范成新.不同扰动方式对底泥/水系统中生物有效磷的影响[J].安全与环境学报,2011,11(2):24-28.
[11]李大鹏.底泥扰动对水体生物有效磷的影响研究[PDR].南京:中国科学院南京地理与湖泊研究所,2012:49-54.
[12]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):19-34.
[13]李大鹏,黄勇.扰动强度对太湖沉积物中磷释放及其形态转化的影响[J].环境科学,2012,33(8):2614-2620.
[14]Hieltjes A H M,Lijklema L.Fractionation of inorganic phosphate in calcareous sediments[J].Journal of Environmental Quality,1980,9(3):405-407.
[15]徐玉慧,姜霞,金相灿等.太湖东北部沉积物生物可利用磷的季节性变化[J].环境科学.2006,27(5):869~873.
[16]孙小静,朱广伟,罗潋葱等.浅水湖泊沉积物磷释放的波浪水槽试验研究[J].中国科学2005,(D辑)35(增刊II):33-44.
[2]Spears B M,Carvalho L,Perkins R,et al.Sediment phosphorus cycling in a large shallow lake:spatio-temporal variation in phosphorus pools and release[J].Hydrobiologia,2007,584:37-48.
[3]Sun S J,Huang S L,Sun X N,et al.Phosphorus fractions and its release in the sediments of Haihe River,China[J].Journal of Environmental Sciences,2009,21:291-295.
[4]House W A,Denison F H,Armitage P D.Comparison of the uptake of inorganic phosphorus to a suspended and stream bed-sediment[J].Water Research,1995,29(3):767-779.
[5]Qin B Q,Hu W P,Gao G,et al.Dynamics of the sediment resuspension and the conceptual schema of nutrient release in the large shallow Lake Taihu,China[J].Chinese Science Bulletin,2004,49(1):54-64.
[6]House W A,Denision F H.Factors influencing the measurement of equilibrium phosphate concentrations in river sediments[J].Water Research,2000,34(4):1187-1200.
[7]Reddy K R,Diaz O A,Scinto L J,et al.Phosphorus dynamics in selected wetlands and streams of the lake Okeechobee Basin[J].Ecological Engineering,1995,5:183-207.
[8]Reddy K R,Flaig E G,Graetz D A.Phosphorus storage capacity of uplands,wetlands and streams of the Lake Okeechobee Watershed,Florida[J].Agriculture Ecosystems andE nvironment,1996,59:203-216.
[9]李大鹏,黄勇,李伟光.底泥再悬浮状态下生物有效磷形成机制研究[J].环境科学,2008,29(7):1824-1830.
[10]李大鹏,黄勇,范成新.不同扰动方式对底泥/水系统中生物有效磷的影响[J].安全与环境学报,2011,11(2):24-28.
[11]李大鹏.底泥扰动对水体生物有效磷的影响研究[PDR].南京:中国科学院南京地理与湖泊研究所,2012:49-54.
[12]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):19-34.
[13]李大鹏,黄勇.扰动强度对太湖沉积物中磷释放及其形态转化的影响[J].环境科学,2012,33(8):2614-2620.
[14]Hieltjes A H M,Lijklema L.Fractionation of inorganic phosphate in calcareous sediments[J].Journal of Environmental Quality,1980,9(3):405-407.
[15]徐玉慧,姜霞,金相灿等.太湖东北部沉积物生物可利用磷的季节性变化[J].环境科学.2006,27(5):869~873.
[16]孙小静,朱广伟,罗潋葱等.浅水湖泊沉积物磷释放的波浪水槽试验研究[J].中国科学2005,(D辑)35(增刊II):33-44.