南方红壤处理滇池水的初步试验

Preliminary Research on Treatment of Water from Lake Dianchi Treated by Red Soil

以含磷极低、富含铁铝氧化物、对磷具有较强的吸附和固定能力的南方红壤为材料,用该土壤对滇池水进行了去磷效果的初步试验。结果表明,该土壤对水体磷的去除效果较好,但去除效果与土壤加入量、处理中的振荡时间、振荡强度及水体的理化性质相关。模拟结果表明,有效处理土壤或选用理想的材料,可以更好地去除水体磷。

As excessive nitrogen and phosphorus may mainly be responsible for eutrophication of Lake Dianchi, it is one of the most effective methods to clean nitrogen and phosphorus from water in order to solve the problem. Red soil is characterized by its low phosphors and abundance of iron and aluminum oxide. It is likely that the red soil is capable of adsorbing phosphorus in water and possible used as a material to remove phosphorus. Preliminary research on water treatment with red soil was conducted in a laboratory. The results showed that the efficience of removal rate for phosphorus with red soil was attractive, but it was related closely to the amount of soil used and shake time and frequency. Further simulated results suggested that the ideal treated soil or material be much better to be used to remove phosphorus in water. This method may be regarded as a new approach in controlling eutrophication for lakes.