With a waterpurification plant and waste disposal system, the crew of the Yamal say the ship's own ecological impact is minimal.
这艘破冰船拥有一个净水装置和垃圾处理系统，它的船员称这艘船自己对生态系统的影响是很小的。
2
The EPA says that it is during the cleaning, purification, and waste disposal phases of dry cleaning that these hazardous toxins can get into our air, water, and soil.
环保局说，这是在清洗，纯化和废物处置阶段，干洗，这些有害毒素可以进入我们的空气，水和土壤中。
3
This paper deals with the treatment of arsenic_containing wastewater in the purification section of sulfuric acid unit, and its process and mechanism are also introduced.