试验采用粉末活性炭处理微污染黄河水。结果表明，不同的投加点处理效果明显不同，选择合适的投加点，最大限度的利用活性炭的吸附容量，对改善出水水质，降低处理成本十分重要。

In the process of treating the micro-contaminated yellow river water with powder activated carbon,the efficiency is obviously different from various dosing points.The dosing points being set at dosing coagulant more than 30 minutes before,activated carbon will exert adsorption capacity efficiently.It is very important to utilize the adsorption capacity of activated carbon maximally,thereby to improve the quality of outgoing water and decrease the cost of the water treatment.