Ding Jinfeng, Zhao Fengmin, Cao Youfu, Xing Li, Liu Wei, Mei Shuai, Li Shujun
a Chinese Academy of Agricultural Mechanization Sciences , Chaoyang District, Beijing , China.
Int J Phytoremediation. 2015;17(1-6):222-7. doi: 10.1080/15226514.2013.876970.
The present study investigated the feasibility of cultivating microalgae in dairy farm wastewater. The growth of microalgae and the removal rate of the nutrient from the wastewater were examined. The wastewater was diluted 20, 10 and 5 times before applied to cultivate microalgae. A 5 dilution yielded 0.86 g/L dry weight in 6 days with a relative growth rate of 0.28 d(-1), the 10×dilution gave 0.74 g/L and a relative growth rate of 0.26 d(-1) while the 20×dilution 0.59 g/L and a relative growth rate 0.23 d(-1). The nutrients in the wastewater could be removed effectively in different diluted dairy wastewater. The greatest dilution (20×) showed the removal rates: ammonia, 99.26%; P, 89.92%; COD, 84.18%. A 10×dilution removal% was: ammonia 93; P 91 and COD 88. The 5× dilution removal% was: ammonia 83; P 92; COD 90.
本研究调查了在奶牛场废水中培养微藻的可行性。检测了微藻的生长情况以及废水中营养物质的去除率。在用于培养微藻之前，将废水分别稀释了20倍、10倍和5倍。5倍稀释时，6天内干重产量为0.86 g/L，相对生长速率为0.28 d(-1)；10倍稀释时，产量为0.74 g/L，相对生长速率为0.26 d(-1)；20倍稀释时，产量为0.59 g/L，相对生长速率为0.23 d(-1)。不同稀释倍数的奶牛场废水中的营养物质均可被有效去除。最大稀释倍数（20倍）时的去除率为：氨，99.26%；磷，89.92%；化学需氧量（COD），84.18%。10倍稀释时的去除率分别为：氨93%；磷91%；COD 88%。5倍稀释时的去除率分别为：氨83%；磷92%；COD 90%。
