厌氧光合菌SU6处理模拟啤酒废水及生物质转化

Treatment and bioconversion of simulated brewery wastewater by anaerobic photosynthetic strain SU6

光合细菌(Photosynthetic Bacteria,PSB)可以在去除污水中有机污染物的同时,将其转化为具有高附加值的生物质。该研究通过批次实验探讨了不同碳源、氮源和磷源浓度对厌氧光合细菌外硫红螺菌属的新菌株(Ectothiorhodospira sp.SU6)处理模拟啤酒废水和生物质转化的影响。结果表明,模拟啤酒废水中COD、NH_(3)-N、TP浓度均对光合细菌的生长,污染物去除效率和生物质转化效率具有显著影响。COD浓度2000 mg/L,外加氮源100 mg/L、磷源40 mg/L时,菌株SU6的啤酒废水生物质转化效果最佳,培养96 h后COD、NH_(3)-N和TP去除率分别为57.0%、82.7%和50.7%,细胞生物质OD600值为1.28,实现了模拟啤酒废水碳氮磷同步去除和生物质的高效转化。

Photosynthetic bacteria(PSB)have the ability to remove the organic pollutants in sewage while converting them into biomass with high value added products.The effects of different initial concentration of carbon,nitrogen and phosphorus sources on the treatment of simulated brewery wastewater and biomass conversion by anaerobic photosynthetic strain Ectothiorhodospira sp.SU6 were investigated.The concentration and proportion of COD,NH_(3)-N and TP in simulated brewery wastewater significantly influenced on the growth of strain SU6,pollutants removal and biomass conversion.The optimal pollutants removal and biomass conversion were obtained with the initial COD concentration of 2000 mg/L,nitrogen of 100 mg/L and phosphorus of 40 mg/L.After 96 hours cultivation,the COD,NH_(3)-N and TP removal rates were 57%,82.7% and 50.7%,respectively,and the biomass of OD600 was 1.28.The experimental results indicated that the pollutants removal and biomass conversion from simulated brewery wastewater could be accomplished by anaerobic photosynthetic strain Ectothiorhodospira sp.SU6.