铁刨花在控制水体磷内源释放中的应用研究

Control of Phosphorus Release from Sediments by Iron Scraps

从水体沉积物中磷的内源释放入手,来寻求控制水体富营养化的有效手段越来越受到研究者的广泛关注。实验考察了加铁反应器与空白对照反应器中上覆水体总磷浓度和pH的变化,并分析了底泥中水溶性磷、G法各种形态提取磷以及全磷含量变化。结果表明,利用廉价易得的废弃铁刨花,能够有效降低水体中溶解性正磷酸盐浓度,富营养化水体总磷浓度从0.64mg/L降至0.16mg/L,且底泥间隙水中磷酸盐浓度的释放问题也得到有效控制。

More concerns are aroused about how to effectively control eutrophication through studies on phosphorus release from sediments. By lab-scale experiments, in the iron-added reactor and a contrast reactor, the changes of TP and pH in overlying water, changes of WSP, various phosphorus according to Golterman and TP in the sediments have shown that cheap and easily-gotten iron scraps can be used to reduce the concentration of soluble phosphorus in scenic water from 0.64mg/L to 0.16mg/L, which is also effective to deal with phosphate release from interstitial water of sediment.