School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
School of Environmental Science and Engineering, Hunan University, Changsha 410013, China.
Bioresour Technol. 2018 Apr;253:323-332. doi: 10.1016/j.biortech.2018.01.014. Epub 2018 Jan 4.
In this study, a vertical-algal-biofilm-enhanced raceway pond (VAB-enhanced raceway pond) was designed and assessed for wastewater treatment and algal biomass production under different nutrient loading rates. Results indicated that the maximum removal capacity of the system was accordingly 7.52, 6.76 and 0.11 g·m·day for COD, TN and TP, under which the wastewater effluent concentration could be respectively reduced from 106.00, 92.71 and 1.48 mg/L to 43.5, 11.03 and 0.46 mg/L in continuous mode. Meanwhile, about 7.47-10.10 t·ha·year of lipid, 14.85-23.01 t·ha·year of protein and 10.69-14.20 t·ha·year of carbohydrate could be produced from the algae by the system in large scale. The corresponding estimated stoichiometric-methane-potential and biodiesel production of the harvested biomass was 21,471-29,136 m·ha·year and 0.57-1.15 t·ha·year, respectively. The findings of this study demonstrate the feasibility of using VAB-enhanced raceway pond for economically and cost-effectively recovery of nutrients from the wastewater via algal-based byproducts production.
在本研究中，设计并评估了一种垂直藻生物膜强化养殖槽（VAB 强化养殖槽），以在不同养分负荷率下进行废水处理和藻类生物质生产。结果表明，该系统的最大去除能力分别为 7.52、6.76 和 0.11 g·m·day 用于 COD、TN 和 TP，在此条件下，连续模式下的废水出水浓度可分别从 106.00、92.71 和 1.48 mg/L 降低至 43.5、11.03 和 0.46 mg/L。同时，该系统可从藻类中大规模生产出 7.47-10.10 t·ha·year 的脂质、14.85-23.01 t·ha·year 的蛋白质和 10.69-14.20 t·ha·year 的碳水化合物。收获的生物质的相应估计化学计量甲烷潜力和生物柴油产量分别为 21471-29136 m·ha·year 和 0.57-1.15 t·ha·year。本研究的结果表明，使用 VAB 强化养殖槽通过藻类基副产品的生产从废水中经济有效地回收养分是可行的。
