mixed packing

The results show that pollutants removal performance of the system constructed by the mixed packing medium with equal volume proportion of bricks and ceram waste is the best of the four systems.

结果表明，以等体积掺混废砖块和废陶获得的混合填料构建的人工湿地系统，在处理含高浓度和低浓度有机污染物的河水时均表现出良好的除污效果。

The 200 kt/ a lube phenol extraction unit in Lanzhou Petroleum Processing and Chemical Complex was revamped. The previous mixed packing mainly containing ladder ring was replaced by TH ⅱ type double saddle ring packing. A ripple shape packing support was adopted.

兰州炼油化工总厂200kt/a润滑油苯酚精制装置将原萃取塔以阶梯环填料为主的混装填料改造为THⅡ型双鞍环填料，填料采用波纹状填料支承；