采用厌氧流化床生物反应器对城市污水污泥进行厌氧消化。
Anaerobic digestion of municipal wastewater sludges using anaerobic fluidized bed bioreactor.
机构信息
Department of Civil and Environmental Engineering, University of Western Ontario, London, Ontario N6A 5B9, Canada.
Department of Civil and Environmental Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
出版信息
Bioresour Technol. 2014 Nov;172:461-466. doi: 10.1016/j.biortech.2014.09.081. Epub 2014 Sep 28.
The anaerobic digestion of primary sludge (PS) and thickened waste activated sludge (TWAS) using an anaerobic fluidized bed bioreactor (AnFBR) employing zeolite particles as the carrier media was investigated at different organic loading rates (OLRs). PS was tested at OLRs from 4.2 to 39kgCOD/m(3)-d corresponding to hydraulic retention times (HRTs) from 1.0 to 8.9days. The highest COD removal and VSS destruction efficiencies for primary sludge of 85% and 88%, respectively, were achieved at an HRT of 8.9days and OLR of 4.2kgCOD/m(3)-d. For TWAS, VSS destruction efficiencies varied from 42% at an HRT of 2.6days and OLR of 13.1kgCOD/m(3)-d to 69% at an HRT of 8.8days and an OLR of 4.2kgCOD/m(3)-d. The first-order COD biodegradation rates in the AnFBR for PS and TWAS were 0.4d(-1) and 0.1d(-1), respectively, almost double the rates in conventional high-rate digesters.
采用沸石颗粒作为载体介质的厌氧流化床生物反应器（AnFBR）对原生污泥（PS）和浓缩剩余污泥（TWAS）进行厌氧消化，在不同的有机负荷率（OLR）下进行了研究。PS 的 OLR 测试范围为 4.2 至 39kgCOD/m(3)-d，对应的水力停留时间（HRT）为 1.0 至 8.9 天。在 HRT 为 8.9 天和 OLR 为 4.2kgCOD/m(3)-d 时，原生污泥的 COD 去除率和 VSS 破坏效率最高，分别达到 85%和 88%。对于 TWAS，VSS 破坏效率在 HRT 为 2.6 天和 OLR 为 13.1kgCOD/m(3)-d 时为 42%，在 HRT 为 8.8 天和 OLR 为 4.2kgCOD/m(3)-d 时为 69%。PS 和 TWAS 在 AnFBR 中的一阶 COD 生物降解率分别为 0.4d(-1)和 0.1d(-1)，几乎是传统高速消化器的两倍。
Zotero 插件