| 运河(杭州段)沉积物中Cu和Zn的释放特征 |
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| 引用本文： | 朱广伟,陈英旭,田光明.运河(杭州段)沉积物中Cu和Zn的释放特征[J].环境化学,2002,21(5):436-442. |
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| 作者姓名： | 朱广伟 陈英旭 田光明 |
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| 作者单位： | 1. 中国科学院南京地理与湖泊研究所,南京,210008
2. 浙江大学环境工程系,杭州,310029 |
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| 摘 要： | 采用模拟试验研究了运河（杭州段）沉积物中Cu和Zn的释放规律，以及投加石灰、曝气等地表水治理手段对其释放规律的影响，结果表明，沉积物中Cu的释放速率很快，在1-2d内沉积物-上覆水间Cu的分配即达到平衡，而Zn的释放速率较慢，在21d的模拟试验中上覆水Zn的浓度仍在增加，运河沉积物的释放尽管不会导致上覆水中Cu和Zn浓度超过地表水的二类标准，但显著超过了渔业水质标准，对运河的水生生态系统构成威胁，采用投加石灰和水体曝气可以有效降低上覆水中Cu和Zn的平衡浓度。
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| 关 键 词： | 运河 杭州段 水质监测 铜 锌 沉积物 Cu Zn 释放特征 |
RELEASING MECHANISM OF Cu AND Zn FROM SEDIMENT OF THE HANGZHOU SECTION OF THE GRAND CANAL,CHINA |
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| ZHU Guang-wei.RELEASING MECHANISM OF Cu AND Zn FROM SEDIMENT OF THE HANGZHOU SECTION OF THE GRAND CANAL,CHINA[J].Environmental Chemistry,2002,21(5):436-442. |
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| Authors: | ZHU Guang-wei |
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| Abstract: | Releasing mechanism of Cu and Zn from sediment of the Hangzhou section of the Grand Canal and the effect of surface water pollution control method on release were studied by modelling experiments.The results showed that releasing rate of Cu from sediment to overlying water was rapid,which the releasing balance could arrive in about 2 days.However,releasing rate of Zn was slow.Liming and aeration could significantly decrease concentrations of Cu and Zn in overlying water. |
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| Keywords: | sediment heavy metals surface water water pollution control engineering |
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