The optimum technological parameters were: gas/ water ratio 2 ∶ 1, hydraulic retention time 12 h, and optimum backflush interval is 5~ 6 days.
最优滤池运行参数为气水比2∶1,水力停留时间12h,反冲洗周期5-6d;
And in Guiyang City, Guizhou Province has built sophisticated hydraulic Factory days.
并在贵州省贵阳市设有天筑精密液压件厂.
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