Abstract: Recent years have witnessed highly-frequent serious sudden water pollution accidents in China. In the present paper, the treatment technologies for sudden water environment pollution accidents (inclusive of toxic organic pollutants pollution, heavy metal pollution, oil spill pollution and biological pollution) and the critical role of hydraulic engineering technologies in such accident treatment are reviewed. Recommendations of long-term measures of ecological restoration after the emergency response are presented. Emergency management, prediction and pre-warning, as well as emergency treatment should be developed comprehensively. This research aims to provide scientific basis for further research of treatment technologies and emergency response for water pollution accidents.

Key words: sudden water pollution, emergency treatment, ecological restoration and construction