色综合久久综合网,1区2区3区4区精品,国产电影免费播放网站,在线成人精品国产区免费,久久古典第1页777,免费观看电视剧的app有哪些,高清版AⅤ免费视频,电影天堂在线观看

中文 EN
Back

Business

Categories

River water purification

Concept: River water purification mainly involves removing impurities such as suspended solids, sediment, and organic matter from the river water through corresponding filtering materials and equipment, in order to meet domestic water standards.

General process: River water purification generally adopts methods such as flocculation sedimentation, quartz sand filter, precision filter, and disinfection treatment to ensure the cleanliness and safety of the river water.


Related cases

img