National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
Bioresour Technol. 2016 Dec;222:326-334. doi: 10.1016/j.biortech.2016.09.103. Epub 2016 Oct 10.
This study presents a novel strategy to improve the removal efficiency of nitrogen and phosphorus from municipal wastewater by feeding sequencing batch reactor (SBR) with sludge alkaline fermentation products as carbon sources. The performances of two SBRs treating municipal wastewater (one was fed with sludge fermentation products; F-SBR, and the other without sludge fermentation products; B-SBR) were compared. The removal efficiencies of total nitrogen (TN) and phosphorus (PO-P) were found to be 82.9% and 96.0% in F-SBR, while the corresponding values in B-SBR were 55.9% (TN) and -6.1% (PO-P). Illumina MiSeq sequencing indicated that ammonium-oxidizing bacteria (Nitrosomonadaceae and Nitrosomonas) and denitrifying polyphosphate accumulating organisms (Dechloromonas) were enriched in F-SBR, which resulted in NO-N accumulation and denitrifying phosphorus removal via nitrite (DPRN). Moreover, feeding of sludge fermentation products reduced 862.1mg VSS/d of sludge in the F-SBR system (volume: 10L).
本研究提出了一种新策略，通过向序批式反应器（SBR）投喂污泥碱性发酵产物作为碳源，提高城市污水中氮磷的去除效率。比较了两个处理城市污水的 SBR（一个投喂污泥发酵产物，即 F-SBR；另一个不投喂污泥发酵产物，即 B-SBR）的性能。结果表明，F-SBR 中总氮（TN）和磷（PO-P）的去除效率分别为 82.9%和 96.0%，而 B-SBR 中的相应值分别为 55.9%（TN）和-6.1%（PO-P）。Illumina MiSeq 测序表明，F-SBR 中富集了氨氧化细菌（硝化单胞菌科和亚硝化单胞菌）和反硝化聚磷菌（脱氯菌），导致 NO-N 积累和通过亚硝酸盐（DPRN）的反硝化除磷。此外，F-SBR 系统中投喂污泥发酵产物减少了 862.1mg VSS/d 的污泥（体积：10L）。
