College of Biological Chemical Science and Engineering, Jiaxing University, Jiaxing, 314001, P.R. China.
Shanghai Public Green Space Construction Affairs Center, Shanghai, 201100, China.
Sci Rep. 2017 Sep 7;7(1):10897. doi: 10.1038/s41598-017-11207-y.
Three different treatment technologies, namely mono-algae culture, algal-bacterial culture, and algal-fungal culture, were applied to remove pollutants form synthetic domestic sewage and to remove CO from biogas in a photobioreactor. The effects of different initial influent C/N ratios on microalgal growth rates and pollutants removal efficiencies by the three microalgal cultures were investigated. The best biogas upgrading and synthetic domestic sewage pollutants removal effect was achieved in the algal-fungal system at the influent C/N ratio of 5:1. At the influent C/N ratio of 5:1, the algal-fungal system achieved the highest mean chemical oxygen demand (COD) removal efficiency of 81.92% and total phosphorus (TP) removal efficiency of 81.52%, respectively, while the algal-bacterial system demonstrated the highest mean total nitrogen (TN) removal efficiency of 82.28%. The average CH concentration in upgraded biogas and the removal efficiencies of COD, TN, and TP were 93.25 ± 3.84% (v/v), 80.23 ± 3.92%, 75.85 ± 6.61%, and 78.41 ± 3.98%, respectively. These results will provide a reference for wastewater purification ad biogas upgrading with microalgae based technology.
三种不同的处理技术，即单藻培养、藻菌培养和藻菌培养，应用于在光生物反应器中去除合成生活污水中的污染物和从沼气中去除 CO。研究了不同初始进水 C/N 比对三种微藻培养物的微藻生长速率和污染物去除效率的影响。在进水 C/N 比为 5:1 时，藻菌系统实现了最佳的沼气升级和合成生活污水污染物去除效果。在进水 C/N 比为 5:1 时，藻菌系统实现了最高的平均化学需氧量（COD）去除效率 81.92%和总磷（TP）去除效率 81.52%，而藻菌系统则表现出最高的平均总氮（TN）去除效率 82.28%。升级沼气中的平均 CH 浓度以及 COD、TN 和 TP 的去除效率分别为 93.25 ± 3.84%（v/v）、80.23 ± 3.92%、75.85 ± 6.61%和 78.41 ± 3.98%。这些结果将为基于微藻的废水净化和沼气升级技术提供参考。
