用海水浸出粉煤灰液特性的研究

Analysis of Properties of Pulverized-Coal Ash Solution From Seawater Infiltration

以某发电厂粉煤灰作为浸出实验用灰,以海水作为浸出用水,按照一定的灰水比配成灰水,振荡静置后取上清液,测其有关成份,同时测定海水本底值,并对有关测试值进行分析讨论。实验结果表明,用海水作浸出用水比用淡水作浸出用水,在相同的务件下 PH 值降低2个单位,氟、砷及其他毒害重金属的含量均符合工业废水排放标准。

Infiltration experiments were performed by mixing in a certain proportion thepulverized-coal ash from a power plant with seawater.After shaking and subsequent resting,theupper clear solution was examined for the concentrations of its various components.The obtaineddata were then analyzed against the data of the infiltrating seawater.The value of PH was 2 unitslower than fresh water was used under the identical conditions and the concentrations of harmfulsubstances such as F and As or some heavy metals were below the limit of the waste liquordischarge standards of China.