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树脂法去除并回收富营养化河涌水中的磷

Keywords: 树脂,富营养化,,吸附,回收

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Abstract:

磷作为一种重要的元素而被广泛应用于农业与工业中,然而磷的过量排放已成为许多封闭半封闭水体富营养化和沿海赤潮频繁发生的原因之一。去除水体中的营养盐特别是磷酸盐,是有效控制水体富营养化的关键。广州市某河涌水含总磷2.6mg/L,采用并选择DS离子交换树脂对水中磷进行动态吸附和去除,可使水中的磷降至排放标准以内,解决河涌水含磷高的富营养化问题。由DS树脂所吸附的磷,通过淋洗可得到含磷富集液,使磷从水体中完全分离出来并获得回收。DS树脂的再生能力强,经6次吸附-解吸-再生后,树脂对河涌水中磷的去除率仍可达到90%以上。

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