a titanium-dioxide system, which is still in development, could purify water to the point where it was suitable not merely for discharge, but for drinking.
the tourmaline with great spontaneous polarity can purify water and air. so it can be used in building decorating material, purifying water materials and cleaning air materials.
you can also purify water by boiling it and condensing the steam which you have collected.
你也可把水煮沸,将收集到的蒸汽凝结,用这样的方法来提取纯水。
our findings show that psb could improve the survivability, promote growth and purify water quality.
结果表明:psb具有提高家禽、水产动物成活率、促进生长、凈化水质的作用。
one of the ways to purify water is to make it spew slowly from the soil.
凈化水的方法之一是让它从土中慢慢地渗出。
the hydrophytes can purify water body.
水生植被具有凈化水体的作用。
the reed marshes are diminished because of artificial activity, village civilization and concreted river bank in middle and small rivers of china, its effect of purify water quality is lost.
air filter can effectively help us evolve off the air impurities and dust particles, in industry still can rise to purify water quality, to achieve industrial use the standard cleanliness efficacy.
to safeguard safe of the life and property of the people and to purify water resources of miyun reservoir, it is imperative to control debris-flow hazard.