高效除磷硅藻土用于城市景观水体的治理

城市景观水体污染日益严重,防治水体富营养化,净化水质,恢复景观水体功能势在必行。以合肥市包河公园水体为处理对象,选择具有高效除磷功能的硅藻土作为净水材料,研究其用于城市景观水体治理的可行性。结果表明,硅藻土对景观水体中TP的去除率高达93%,对氨氮的去除率>61%,对藻类的去除率>99%,水体透明度从35 cm提高到100 cm以上,并对水体具有明显的脱色能力。硅藻土在水中无残留,保持了水的原生态性。结合工程实例,分析了硅藻土净水的原理及特点,验证了该方法在开放性水体污染治理中的可行性,为城市大容量景观内河水体的治理提供了一种新的思路。

Application of Effective Phosphorus Removal Diatomite to Urban Landscape Water Treatment

As urban landscape water becomes increasingly polluted,controlling eutrophication,improving water quality,and restoring landscape water function are imperative measures.The effective phosphorus removal diatomite was selected as water purification material for water treatment at Hefei Baohe Park,and its feasibility in landscape water treatment was studied.The results showed that the removal rates of TP,NH3-N and algae were 93%,more than 61% and more than 99% after the landscape water was treated by diatomite.Furthermore,the water transparency improved from 35 cm to more than 100 cm,suggesting effective color removal of landscape water by diatomite.The original ecology of water was kept because there were no remains of diatomite in the water.Combined with engineering examples,the principles and characteristics of diatomite water purification were analyzed.The feasibility of this method to treat open water pollution was verified to provide a new way to treat large volume urban landscape water.