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2011年7月20日某污水处理厂发生一起急性硫化氢(H2S)中毒事故,导致3人死亡,4人轻度中毒,现将调查结果报告如下。1事件经过2011年7月19日23:00,储泥池3台回流污泥泵故障停机,泥深约1.3 m。7月20日8:00曹某、钟某、陈某3人准备将污泥泵吊出维修,第2台污泥泵起吊时,铁链断裂跌回泥中,于是抽排污泥露出泵体,此时污泥深约0.5 m。12:00
July 20, 2011 A hydrogen sulfide (H2S) poisoning accident occurred in a sewage treatment plant, killing three people and poisoning four people. The findings are as follows. 1 Event After 23:00 on July 19, 2011, the sludge tank 3 return sludge pump downtime, mud depth of about 1.3 m. At 20:00 on July 20, Cao, Zhong, Chen 3 people ready to lift the sludge pump maintenance, the first 2 sludge pump lifting, broken iron chain fell back to the mud, so pumping sludge out of the pump Body, at this time the sludge depth of about 0.5 m. 12:00