Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 30123 Trento, Italy.
Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano 77, 30123 Trento, Italy.
Bioresour Technol. 2019 Jan;272:267-274. doi: 10.1016/j.biortech.2018.10.028. Epub 2018 Oct 12.
In order to reduce the investment costs of the anaerobic side-stream reactor (ASSR) process coupled with an activated sludge system and promote the full scale application, the impact of 1 d anaerobic solid retention time (SRT) and 100% interchange ratio (IR) has been investigated on sludge reduction, carbon and nutrient removal efficiency and microbial community, in a sequencing batch reactor (SBR)-ASSR system. The SBR-ASSR achieved good removal efficiencies in COD (91.5 ± 3.4%), ammonium nitrogen (98.8 ± 0.5%), total nitrogen (87.9 ± 4.9%) and phosphate (92.8 ± 6.7). The sludge yield of the system was 0.1648 g TSS gCOD; 54% lower compared to a conventional activated sludge (CAS) system. Real time quantitative polymerase chain reaction (q-PCR) showed an abundance of hydrolyzing and fermentative bacteria. Comparison at class and genus level confirmed an abundance of anaerobic hydrolyzing and fermentative bacteria, denitrifying bacteria able to simultaneous perform nitrogen and phosphate removal and phosphate accumulating organisms.
为了降低与活性污泥系统偶联的厌氧分流水处理系统（ASSR）的投资成本并促进其全面应用，本研究在序批式反应器（SBR）-ASSR 系统中考察了 1d 厌氧固体停留时间（SRT）和 100%交换率（IR）对污泥减量、碳和营养物去除效率以及微生物群落的影响。SBR-ASSR 对 COD（91.5±3.4%）、氨氮（98.8±0.5%）、总氮（87.9±4.9%）和磷酸盐（92.8±6.7%）具有良好的去除效率。与传统活性污泥（CAS）系统相比，该系统的污泥产率为 0.1648 g TSS gCOD，降低了 54%。实时定量聚合酶链反应（q-PCR）显示了大量的水解和发酵细菌。在类和属水平上的比较证实了厌氧水解和发酵细菌、能够同时进行氮和磷去除的反硝化细菌以及聚磷菌的丰富度。
