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Sudden water pollution incidents are incidents that the pollutants affected by some unexpected factors following into water bodies, resulting in contamination of water resources within a short period, which will lead to emergencies of adverse impacts on society. According to the ways of pollutants following into water bodies, sudden water pollution incidents could be classified into four categories. Sudden water pollution incidents have potentially risks, and some positive approaches should be adopted to control them. Those have been discussed in the research that three sudden water pollution incidents having taken place in Huanggang River basin and their treatment measures, and the four hidden pollution hazards existing in Huanggang river basin have been analyzed.

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