利用粉煤灰处理含磷废水的研究

Study on Phosphorous Wastewater Treatment with Coal Ash

为了解决水体富营养化，以粉煤灰作为吸附剂 ，对含磷为５０～１２０ｍｇ／Ｌ模拟废水脱磷的规律特征进行探讨，试验结果表明，粉煤灰是一种 有效的吸附剂，在含Ｐ浓度为５０～１２０ｍｇ／Ｌ，粉煤灰用量每５０ｍＬ为２～２．５ｇ，粒径范围１４０～１ ６０目，ｐＨ中性的实验条件下，磷的去除率最高可达９９％以上。

With coal ash as an absorbent,the dephosphoration feature of simulated phosphorus－containing wastewater is discussed for solving eutrophication in water body．Under the conditions of 50～120 mg/L phosphorus c o ncentration,2～2.5g coal ash per 50mL,140～160 meshes grain size and neutral pH ,the removal rate of phosphorus can be up to more than 99％．