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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The temple, built in the 9th Century, has 13 ornate spouts, and each stream of cool fresh water represents a different type of purification, from fertility and love to protection from evil spirits.

BBC: Changing lives and perceptions in Ubud