This paper deals with the treatment of arsenic_containing waste water in the purification section of sulfuric acid unit, and its process and mechanism are also introduced.
对硫酸生产中净化工序废水进行处理，根据其含砷量多少，介绍其处理方法、工艺流程及机理，经处理后的污水均可达到国家排放标准。
Redundant high-pressure interlocks cut off feeds to the EO Reaction Section and all heat sources to the Ethylene Oxide Purification Section far below the relieving pressure.
冗余高压连锁切断了向环氧乙烷反应工段的供料，以及供至远低于泄放压力的环氧乙烷净化工段的所有热源。
Initial investigations indicated that the accident aboard the hunter-killer submarine involved a piece of air purification equipment in its forward section. It caused only superficial damage.
初始调查显示该攻击型潜艇事故包括一处空气净化系统，其首部受到轻微损害。
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