不同固磷方式对巢湖沉积物磷吸附行为的影响
EFFECTS OF DIFFERENT PHOSPHORUS IMMOBILIZATION WAYS ON PHOSPHORUS SORPTION BEHAVIORS IN SEDIMENT OF LAKE CHAOHU
查看参考文献30篇
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文摘
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内源磷负荷将严重阻碍富营养化湖泊的恢复,其控制技术的关键在于有效增强沉积物吸附磷的能力,而相关研究相对较少。研究以典型富营养化湖泊(巢湖)严重污染区域的沉积物为实验对象,系统比较了常规固磷方式(施用CaCl2、FeCl3、AlCl3与曝气)对沉积物磷吸附行为和间隙水溶解态可反应磷(SRP)浓度的影响。结果表明:施用不同剂量的CaCl2之后,沉积物磷最大吸附量和吸附能均无显著变化,间隙水SRP浓度和沉积物磷平衡浓度(EPC0)仅有较小幅度的下降;FeCl3和AlCl3的施用可明显增加沉积物磷的最大吸附量和吸附能,同时有效降低间隙水SRP浓度和EPC0值,即沉积物显示更强的从水中吸附磷的能力。当同处低剂量水平时,铁能更有效地降低沉积物EPC0值;反之,曝气对沉积物最大吸附量和吸附能均无显著影响,却明显提高了间隙水SRP浓度和沉积物EPC0值,进而导致更强的磷释放风险。故建议将适量铁的施用作为富营养化湖泊沉积物修复的有效技术,且慎用曝气处理。 |
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其他语种文摘
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Internal phosphorus loading in sediment will exert negative effects on restoration of eutrophic lakes, whose control is dependent on the effective enhancement of phosphorus sorption on sediments, but relevant works are scare.In this study, the sediments from the seriously polluted areas in a Chinese eutrophic lake(Lake Chaohu) were obtained, and the effects of the routine technologies such as dosing salts of calcium, iron, aluminium and aeration, on sediments phosphorus sorption behavior and interstitial water soluble reactive phosphorus(SRP) concentration were compared with the application of calcium salt, no significant changes in phosphorus sorption maximum and the bonding energy were observed, together with the slight decrease in SRP concentration in interstitial water and zero equilibrium phos-phorus concentration(EPC0) in sediment;furthermore, the application of salts of iron and aluminium not only significant enhanced phosphorus sorption maximum and the bonding energy, but also decreased SRP concentration in interstitial water and EPC0 in sediments, leading to a stronger ability to adsorb phosphate from aqueous phase into sediment.With the lowest dosage, iron salt could reduce sediment EPC0 more effective relative to aluminium salt;on the other hand, aeration had no significant effects on phosphorus sorption maximum and the bonding energy, and what is worse, it substantially gave rise to SRP concentration in interstitial water and sediment EPC0 value, thereby increasing risk of phosphorus release.Overall, iron salt application with optimal dosage can be taken as a suitable technology for sediment remediation of eutrophic lakes, while the benthic aeration must be cautiously used. |
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来源
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水生生物学报
,2011,35(2):319-324 【核心库】
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关键词
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富营养化
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沉积物
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磷固定
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曝气
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磷吸附
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地址
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中国科学院水生生物研究所, 淡水生态与生物技术国家重点实验室, 武汉, 430072
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3207 |
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学科
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环境科学基础理论 |
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基金
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国家重大科技专项
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国家973计划
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科技重大专项
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中国匈牙利政府间科技合作资助
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文献收藏号
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CSCD:4384267
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参考文献 共
30
共2页
|
|
1.
陈芳. 湖北省若干浅水湖泊沉积物有机质与富营养化的关系.
水生生物学报,2007,31(4):467-472
|
被引
19
次
|
|
|
|
|
2.
Sondergaard M. Internal phosphorus loading in shallow Danish lakes.
Hydrobiologia,1999,409:145-152
|
被引
38
次
|
|
|
|
|
3.
Sondergaard M. Role of sediment and internal loading of phosphorus in shallow lakes.
Hydrobiologia,2003,506(1):135-145
|
被引
140
次
|
|
|
|
|
4.
Hu J. Mobility of different phosphorus pools in the sediment of Lake Dianchi during cyanobacterial blooms.
Environmental Monitoring and Assessment,2007,132:141-153
|
被引
9
次
|
|
|
|
|
5.
Xie L Q. The low TN: TP ratio, a cause or a result of Microcystis blooms.
Water Research,2003,37(9):2073-2080
|
被引
65
次
|
|
|
|
|
6.
Mortimer C H. Exchange of dissolved substances between water and mud in lakes. I.
Journal of Ecology,1941,29:280-329
|
被引
20
次
|
|
|
|
|
7.
Moosmann L. Is phosphorus retention in autochthonous lake sediments controlled by oxygen or phosphorus.
Limnology and Oceanography,2006,51(1):763-771
|
被引
3
次
|
|
|
|
|
8.
Istvanovics V. Cyanobacteriamediated internal eutrophication in shallow Lake Balaton after load reduction.
Water Research,2002,36(13):3314-3322
|
被引
2
次
|
|
|
|
|
9.
Mc Gechan M B. Sorption of phosphorus by soil, part 2: Measurement methods, results and model parameter values.
Biosystems Engineering,2002,82(2):115-130
|
被引
1
次
|
|
|
|
|
10.
付长营. 三峡水库香溪河库湾沉积物对磷的吸附特征研究.
水生生物学报,2006,30(1):31-36
|
被引
17
次
|
|
|
|
|
11.
Luo Z X. Phosphorus retention capacity of agricultural headwater ditch sediments under alkaline condition in purple soils area, China.
Ecological Engineering,2009,35(1):57-64
|
被引
17
次
|
|
|
|
|
12.
Leoni B. Response of planktonic communities to calcium hydroxide addition in a hardwater eutrophic lake: results from a mesocosm experiment.
Limnology,2007,8(2):121-130
|
被引
4
次
|
|
|
|
|
13.
Boers P. Fixation of phosphorus in lake sediments using iron (III) chloride -experiences, expectations.
Hydrobiologia,1992,233(1/3):211-212
|
被引
2
次
|
|
|
|
|
14.
Kopacek J. Aluminum control of phosphorus sorption by lake sediments.
Environmental Science & Technology,2005,39(22):8784-8789
|
被引
21
次
|
|
|
|
|
15.
Murphy J. A modified single solution method for determination of phosphate in natural waters.
Analytica Chimica Acta,1962,26(1):1-36
|
被引
2
次
|
|
|
|
|
16.
Ann Y. Influence of chemical amendments on phosphorus immobilization in soils from a constructed wetland.
Ecological Engineering,2000,14:157-167
|
被引
16
次
|
|
|
|
|
17.
Golterman H L. The distribution of phosphate over ironbound and calcium-bound phosphate in stratified sediments.
Hydrobiologia,1998,364:75-81
|
被引
2
次
|
|
|
|
|
18.
Dittrich M. A balance analysis of phosphorus elimination by artificial calcite precipitation in a stratified hardwater lake.
Water Research,1997,31(2):237-248
|
被引
3
次
|
|
|
|
|
19.
Reddy K R. Phosphorus dynamics in selected wetlands and streams of the Lake Okeechobee Basin.
Ecological Engineering,1995,5(2/3):183-207
|
被引
19
次
|
|
|
|
|
20.
Soltero R A. Partial and full lift hypolimnetic aeration of Medical lake, WA to improve water quality.
Water Research,1994,28(11):2297-2308
|
被引
6
次
|
|
|
|
|
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