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目的:查明造成该次水污染事件的直接原因,杜绝类似事件的再次发生。方法:运用卫生学调查、流行病学分析方法进行调查,对剩余可疑食物、呕吐物、生活饮用水、工业废水进行检测,对结果进行综合分析。结果:自来水中亚硝酸盐氮浓度最高为1 783mg/L,工业废水中亚硝酸盐氮浓度为457mg/L,呕吐物、剩余食物检出亚硝酸盐。结论:该事件为一起因含亚硝酸盐的工业废水industrial wastewaterindustrial wastewater污染生活饮用水造成的急性中毒事件。
Purpose: To identify the direct cause of the water pollution incident and prevent the recurrence of similar incidents. Methods: To investigate the remaining suspicious foods, vomit, drinking water and industrial wastewater by using the methods of hygiene investigation and epidemiological analysis, and make a comprehensive analysis of the results. Results: The highest concentration of nitrite nitrogen in tap water was 1 783 mg / L, the concentration of nitrite nitrogen in industrial wastewater was 457 mg / L, vomit, and the remaining food was detected nitrite. Conclusion: This incident was an acute poisoning incident caused by contamination of drinking water with industrial wastewater industrial wastewater containing nitrite.