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1·With a water purification 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·A plant engineer who is in charge of both water supply and wastewater treatment will probably put more effort and concern into the operation of the water purification plant.

一个负责工厂给水和废水处理的工程师可能对给水净化运转更为重视和关心。

3·The operation situation of sewage purification plant influences directly the urban water environment.

污水净化厂的运行状况直接影响着城市水环境的好坏。

4·Flocculation reaction is a very important step during the water purification process in a water plant.

在自来水厂的水质净化过程中，絮凝反应是一个十分重要的环节。

5·Aquatic plant is an important element of the waterscape, and it plays important roles in the landscaping and water purification.

水生植物是构成水景的重要要素之一，具有美化水体和净化水质等功能。