污水处理厂生物除臭技术及其应用进展

污水处理厂在运营过程中所释放的恶臭污染物影响周围空气的环境质量，对人体健康、社会稳定和经济建设造成连锁危害。本文介绍了最近的污水处理厂恶臭气体净化技术发展，重点阐述了生物法除臭技术的应用现状。首先，阐述了生物过滤法、生物洗涤法、活性污泥扩散法、活性污泥回流法和氨氧化产物回流法的除臭原理、发展历史、主要影响因素和技术特点；然后，介绍了生物法除臭技术在污水处理厂的应用案例，总结了我国污水处理厂生物除臭技术的应用现状；最后，根据生物法除臭技术比较和应用现状，提出污水处理厂除臭工程的发展方向，包括分区治理、首尾结合、密闭处理、工艺组合和生物气溶胶控制等。

Biological deodorization technologies in wastewater treatment plant and their application

The odor pollutants released during the operation process of wastewater treatment plants (WWTPs) affect the environmental quality of the surrounding air, which will lead chain hazards to human health, social stability, and economic construction. This paper introduced the recent development of the odor gases purification technologies in WWTPs, mainly focusing on the current application situation of biological deodorization technologies. Firstly, the deodorization principle, developmental history, main influence factors, and characteristics of biofiltration, bioscrubbing, activated sludge diffusion, activated sludge recycling, and oxidized ammonium recycling were introduced. Then the application cases of biological deodorization technologies in Chinese WWTPs were introduced, and the current application status was summarized. Finally, according to the comparison and current application status of biological deodorization technologies, the developmental trends of deodorization engineering in WWTPs were proposed, which included subarea treatment, combination of terminal treatment technologies and source emission reduction technologies, airtight treatment, and control of bioaerosols. This review could provide technical references for enhancing the environmental quality of Chinese WWTPs.