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首页> 美国卫生研究院文献>Scientific Reports >Effects of influent C/N ratios and treatment technologies on integral biogas upgrading and pollutants removal from synthetic domestic sewage
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Effects of influent C/N ratios and treatment technologies on integral biogas upgrading and pollutants removal from synthetic domestic sewage

机译：进水碳氮比和处理技术对综合性沼气升级和合成生活污水中污染物去除的影响

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摘要

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 CO2 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 CH4 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.
机译：应用了三种不同的处理技术，即单藻培养，藻细菌培养和藻真菌培养，以从合成生活污水中去除污染物，并从光生物反应器中的沼气中去除CO2。考察了不同初始进水C / N比对三种微藻培养物对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的情况下，藻类-真菌系统实现了最佳的沼气净化和合成生活污水污染物去除效果。在进水C / N比为5：1的情况下，藻类-真菌系统分别实现了最高的平均化学需氧量（COD）去除率81.92％和总磷（TP）去除率81.52％。细菌系统显示出最高的平均总氮（TN）去除效率为82.28％。提纯后沼气中的平均CH4浓度和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技术的废水净化和沼气升级提供参考。

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