反硝化除磷技术及其实现新途径

综述了反硝化除磷技术的原理、主要影响因素和实现反硝化除磷的新途径。国内外对碳氮质量比,亚硝酸盐对硝化除磷的影响的研究结果存在争议;对硝酸盐投加方式和SRT如何影响系统内微生物的研究还尚未深入。重点对有争议和有待于深入研究的影响因素作了总结。目前,关于在工艺中如何实现反硝化除磷的研究有了突破性进展,这些新途径有:AOA-SBR工艺、好氧颗粒污泥法和内循环气升式SBBR。提出了为使反硝化除磷工艺的运转和控制更加稳定需要将反硝化除磷系统的微生物学与工程紧密联系,了解工程中操作参数如何影响系统中微生物。

Denitrifying dephosphatation and its new available approaches

The mechanisms, main influencing factors and new available approaches of denitrifying dephosphatation were elaborated. Based on the facts that the dispute on the study results of the effects of C/N ratio, nitrite on denitrifying dephosphatation were still exist in China and abroad, and a further research on the influences of feeding modes and SRT on microoganism in the system was needed, the disputing problems and the influencing factors which need to be further studied were summarized emphatically. At the present time, a breakthrough in studying the application of denitrifying dephosphatation has been made, those new available approaches including: AOA-SBR, aerobic granular sludge and airlift loop sequencing batch biofilm reactor. It was pointed out that, to improve the stability of the operation and the control of denitrifying dephosphatation, microbiology should be closely integrated with engineering, and the influences of the operation parameters on microoganisms in the system during the engineering also should be known.