活性炭结构和性能与饮用水处理中有机物去除率的关系研究

Evaluating Activated Carbon for Removal of Natural Organic Matter in Drinking Water

活性炭的吸附性能主要由其结构特征和表面化学性质决定。如何选择合适的适用于饮用水处理的活性炭显得尤为重要。本试验以某湖水中的天然有机物质作为配水中有机物的来源，对活性炭的结构、性能指标和水质化学安全性指标（主要是高锰酸盐指数和UV254）进行了相关性分析。结果表明，试验用水经活性炭吸附后的水质主要与5～10nm和30-100nm的孔容有关，尤其与50～100nm的孔容最为相关。碘值和有机物去除率的相关性较差。比表面积、孔容积、平均孔径与有机物去除率有一定的相关性。

Adsorption of activated carbon has high correlation with its structure and chemical property. It is erucial to choose a suitable activated carbon for drinking water treatment. This study adopted mixed water whose organic matter was from the natural organic matterin a lake. It was conducted to evaluate the characteristics of activated carbon that contributes to the removal of natural organic matter （charactered by CODMn and UV254） in drinking water. Results showed that the removal of natural organic matter has good correlationwith the pore capacity of 5-10 nm and 30-100 nm, and it has especially strong correlation with the pore capacity of 50-100 nm. The iodine number is less correlated to the removal of natural organic matter. The surface area ,the total pore capacity and mean pore size is correlated to the removal of natural organic matter to some extent.