PAC-UF组合系统对水中污染物去除研究

Pollutant removal of drinking water with combined system of PAC-UF

为了更好地提高超滤膜(UF)对水中污染物的去除效果,将粉末活性炭(PAC)的吸附作用与UF的截留作用相结合考察组合系统对水中污染物的去除效能.结果表明:UF膜本身对浊度具有较好的去除效果,但对水中的小分子量有机物及溶解性有机物去除效果较差;投加PAC可以提高UF膜对CODMn、UV254的去除能力,随着投炭量的增加,去除率逐渐提高.在同一投炭量时,随系统运行时间的延长,膜出水中有机物的含量经历一个初期下降到长时间稳定的过程.

In order to improve the removal efficiency of pollutants by ultrafiltration （UF） membrane, the experiment has been carried out based on the combined use of adsorption of powered activate carbon （PAC） and fihration of UF for advanced treatment of drinking water. The results showed that UF could remove turbidity effectively, while it could not remove dissolved organic matter and lower molecular weight pollutants well. Adding PAC to the system enhanced the removal efficiency of UF for CODMn, UV254 and the larger the amount of PAC added, the higher the removal efficiency. It also showed that under the same addition amount of PAC, the organic content of effluent decreased firstly and then was steady during the course of the operation.