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This is the first study of the flocculation of dissolved Fe, Al, Mn, Si, Cu, Pb and Zn during mixing in Zhujiang Estuary, based on the experiment on a series of solutions of salinities ranging from 0 to 24 by mixing the Zhujiang water near Zhongshan University and the seawater in Wan-shan Archipelago area. The mechanism of flocculation of the 7 elements is explored, and the effects of time, acidity and temperature on flocculation are discussed. The results show that the flocculation rates of Fe and Pb in the Zhujiang water are almost a hundred per cent, while that forCu reaches 76%; for Mn, 51%; for Al, 48%; for Zn, 28%; and for Si, 1.2%, indicating that Si is conservative. 相似文献
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本文用生成物法首次对珠江河口混合过程中溶解态的Fe、Al、Mn、Si、Cu、Pb和Zn等元素的絮凝进行研究,以中山大学附近的珠江河水和万山群岛海域的海水按不同比例混合成盐度为0—24‰的系列溶液,对这些元素的絮凝除去机理进行探讨。同时,改变絮凝时间、酸度和温度,求得这些因素对絮凝的影响。结果表明,珠江水中Fe和Pb几乎完全絮凝,其他元素的絮凝率:Cu76%、Mn51%、Al48%、Zn28%和Si1.2%,可见Si在珠江水中呈保守性质。 相似文献
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