粉煤灰处理含氨氮废水的研究

Study on Removal of Ammonia-Nitrogen from Wastewater by Coal Ash

为了降低废水中氨氮含量,以粉煤灰作吸附剂,探讨了粉煤灰对氨氮含量为10～200mg/L模拟废水脱氨氮的一般规律。结果表明,粉煤灰是一种有效的吸附剂,粉煤灰用量每50ml为5～10g,粒径范围160目以上,pH值4.5～6的条件下,振荡时间4小时以上,对废水中氨氮去除效率高于50%。

To reduce the ammonia-nitrogen in the wastewater, this paper studied the ability of coal ash to remove ammonia-nitrogen from wastewater.The results showed that coal ash is effective to adsorb ammonia-nitrogen.When concentration of ammonia-nitrogen was 10～200 mg/L,amount of coal ash used 5～10 g and particle size above 160 mesh,pH between 4.5 and 6,surge more than 4 hours, the efficiency of ammonia-nitrogen removal rate reached above 50%.