Environmental Engineering Laboratory, Department of Civil Engineering, University of Patras, 265 04, Patras, Greece.
Environmental Engineering Laboratory, Department of Civil Engineering, University of Patras, 265 04, Patras, Greece.
J Environ Manage. 2023 Oct 1;343:118167. doi: 10.1016/j.jenvman.2023.118167. Epub 2023 May 23.
Two 5.5-L raceway open ponds were used to evaluate the removal of organic material and nutrients from wastewater. Algal-bacterial flocs were placed in the ponds to treat primary and secondary effluent. The organic loading rate ranged from 29 to 95 and 9 to 38 g sCOD m d for the reactor fed with primary and secondary effluent, respectively. The hydraulic retention time (HRT) gradually decreased in both reactors from 5.5 to 2.2 d during a period of 21 days, and after that, both reactors operated at an HRT of 1.1 d. A high biomass concentration of around 2.2 g L was sustained using primary and secondary effluent after 130 days. The biomass, developed with both substrates was very active and completely removed organic material and nutrients in less than 12 h. The algal-bacteria biomass had excellent settling properties and could settle in less than 10 min.
两个 5.5 升的明渠开放池塘被用于评估从废水中去除有机物质和营养物。藻菌絮体被放置在池塘中以处理原水和二级出水。分别以原水和二级出水为进水的反应器的有机负荷率范围为 29 至 95 和 9 至 38 g sCOD m d。在 21 天的时间内，两个反应器的水力停留时间（HRT）逐渐从 5.5 降至 2.2 d，此后，两个反应器均以 1.1 d 的 HRT 运行。在 130 天后，使用原水和二级出水可维持约 2.2 g L 的高生物量浓度。使用两种基质培养的生物量非常活跃，可在不到 12 小时内完全去除有机物质和营养物。藻菌生物量具有出色的沉降性能，可在不到 10 分钟内沉淀。
