改性玄武岩岩棉去除富营养化水体中磷的研究

Study on Phosphorus Removing from Eutrophication Water by Modified Basaltic Mineral Wool

对废弃玄武岩岩棉通过改性去除富营养化水中的磷,进行了试验研究。结果表明,采用超声波加热、浓度为1%的NaOH改性的岩棉对磷的去除效果最佳,当水体中总磷的浓度为0.58～0.85mg/L时,在改性岩棉用量为每7g/100mL、吸附时间为90min、pH为7.2的试验条件下,总磷的去除率为50%以上,使用后的岩棉经再生可重复使用。

Experimental study has been performed about the phosphorus removal from eutrophication water by modified waste basaltic mineral wool. The results showed that the best modified method of basaltic mineral wool for phosphorus removing was using the sodium hydroxide with concentration of 1% and heating with ultrasonic. When the initial concentration of TP was 0.58-0.85mg/L, the romoval ratio of TP was greater than 50% under the following conditions： the dose of modified basaltic mineral wool was 7g/100mL, adsorption time was 90min, pH value was 7.2. The used basaltic mineral wool could be used repeatly through regeneration.