On-stream detention pond system (OSDPS) is a promising technology for polluted river purification and restoration, whose main purification mechanism was particle settlement.

河道滞留塘系统是以颗粒物沉降为污染物主要净化机理的污染河流净化技术。

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Medical workers in Haiti are now trying to spread the message not to use river water without some form of purification.

VOA: special.2010.11.10