城市污水处理厂硫化氢恶臭气体的发生及源控制

城市污水处理厂散发的硫化氢，臭阅低，可与不饱和酮反应生成其它恶臭物质，不仅严重影响周围居民的生活质量，还会腐蚀污水厂的混凝土和金属构筑物，降低处理效率，并且对污水处理厂的工作人员具有毒害作用。随着公众环保意识的提高，控制与消除城市污水处理厂硫化氢的恶臭污染已成为各国环保科研人员的研究热点之一。控制污水处理厂恶臭污染的传统方法是末端治理，即在硫化氢生成之后进行消除，与末端治理相比，预防性控制法最突出的优点在于防患于未然，抑制硫化氢生成，从源头上解决了污水处理厂硫化氢的污染问题。本文重点介绍了预防生化硫化氢生成的措施，最后提出了一些尚待解决的问题，展望了未来技术的发展方向。

Research Advance of Source Control Technologies for Hydrogen Sulfide from Wastewater Treatment Plants

Biogenic production of sulfide in wastewater treatment plants was a low olfactive-threshold odour and was capable of forming other malodorous substance with unsaturated ketones.Biogenic sulfide associated with several problems,such as corrosion of concrete and metal,deterioration of urban residents' life quality,reduced treatment efficiency and toxicity to sewer workers.With improved consciousness of environment protection,controlling and eliminating odour pollution of sewage treatment plant had become one of the hot research subjects in the field of environment protection.Traditional methods for wastewater treatment plants odour control were end-treatment methods,that is pollution control after sulfide production.Compared with end treatment methods,the most obvious merit of prevention methods was eliminating pollution from headstream.After reviewing various source control technologies of hydrogen sulfide,several unsolved problems were presented and new approaches for future research were prospected in this paper.