洁净水：在南非开普敦的马斯弗梅勒勒，一个小男孩正在喝水，水来自毗邻一条受污染河流的社区洁净水源。
CLEAN WATER: A boy drinks water from a communal clean water source next to a contaminated river in Masiphumelele, Cape Town, South Africa. (Photo: ZUMA Press)
采用生物接触氧化池对受污染珠江水源水进行预处理。
A study of polluted Zhujing River water pretreated by biological contact oxidation process is reported in this paper.
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