Cheng Pengfei, Wang Yuanzhu, Liu Tianzhong, Liu Defu
Poyang Lake Eco-economy Research Center, Jiujiang UniversityJiujiang, China.
School of Water Resources and Hydropower Engineering, Wuhan UniversityWuhan, China.
Front Plant Sci. 2017 Sep 21;8:1594. doi: 10.3389/fpls.2017.01594. eCollection 2017.
This study showed the new potential of using soluble contents and heavy metals in swine wastewater as nutrient supplements for the algae with biofilm attached method. Algae with biofilm attached cultivation grew well in unpasteurized wastewater reaching a biomass productivity of 5.03 g m d, lipid content of 35.9% and lipid productivity of 1.80 g m d. grew in BG11 medium delivered lower values for each of the aforementioned parameters. The FAMEs compositions in the algae paste were mainly consisted of C16:0, C18:2, and C18:3. Algae removed NH-N, total phosphorus (TP), and COD by 75.9, 68.4, and 74.8%, respectively. Notably, Zn, Cu, and Fe were removed from wastewater with a ratio of 65.71, 53.64, and 58.89%, respectively. Biofilm attached cultivation of in swine wastewater containing heavy metals could accumulate considerable biomass and lipid, and the removal ratio of NH-N, TP, COD, and as well as heavy metal were high. Treatment of wastewater with biofilm attached cultivation showed an increasingly popular for the concentration of microalgae and environmental sustainability.
本研究展示了利用猪废水中的可溶性成分和重金属作为附着生物膜法藻类营养补充剂的新潜力。附着生物膜培养的藻类在未经巴氏杀菌的废水中生长良好，生物量生产率达到5.03 g m⁻² d⁻¹，脂质含量为35.9%，脂质生产率为1.80 g m⁻² d⁻¹。在BG11培养基中生长的藻类上述各参数值较低。藻类糊中的脂肪酸甲酯组成主要由C16:0、C18:2和C18:3组成。藻类分别去除了75.9%的氨氮、68.4%的总磷（TP）和74.8%的化学需氧量（COD）。值得注意的是，锌、铜和铁从废水中的去除率分别为65.71%、53.64%和58.89%。在含重金属的猪废水中附着生物膜培养藻类可以积累可观的生物量和脂质，并且氨氮、总磷、化学需氧量以及重金属的去除率都很高。用附着生物膜培养法处理废水对于微藻浓缩和环境可持续性而言越来越受欢迎。
