污水系统中导致硫化氢中毒的影响因素与控制措施

Review of H_2S emission and safety issue in wastewater systems

硫化氢是城市和工业污水系统中经常遇到的有毒有害物。若污水系统作业人员防范措施不当,难以避免发生恶性硫化氢中毒事件。为此,对污水系统中的硫化氢中毒问题进行了较深入的述评与剖析。通过近年来典型中毒案例分析,总结了污水系统中硫化氢气体可能造成的危害,综述了污水系统中硫化氢的产生机理与影响因素,探讨了控制硫化氢产生的方法和防范硫化氢中毒的措施。

As a poison gas hydrogen sulfide （H2S） often appears in the municipal and industrial wastewater system acts still the primary occupational hazard to the operation personnel of wastewater system in this country. If the employees are short of necessary safety consciousness, safety knowledge and protection measures, the toxicity of H2S could be very difficult to fully avoid. In order to enhance people＇s recognition and self-safety consciousness to the hazardous H2S to reduce and avoid the occurring of similar accidents, this paper gives a comprehensive review of emission and toxicosis issues of the H2S gas in wastewater systems, by summarizing the possible harms of H2S in wastewater system, and paying a survey and analysis of typical toxicosis events in recent years. The mechanism and influence factors of H2S formation are detail discussed to find out the effective controlling measures of H2S emission, and provide the countermeasure proposal to avoid the toxicosis with H2S in wastewater system.