College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
Hunan Hikee Environmental Technology Co., Ltd., Changsha 410001, PR China.
Bioresour Technol. 2016 Dec;222:33-38. doi: 10.1016/j.biortech.2016.09.102. Epub 2016 Sep 30.
Two strains of photosynthetic bacteria, Rhodobacter blasticus and Rhodobacter capsulatus, were used in this work to investigate the feasibility of using photosynthetic bacteria for the treatment of anaerobically digested swine wastewater. The effects of crucial factors which influence the pollutants removal efficiency were also examined. Results showed that anaerobically digested swine wastewater could be treated effectively by photosynthetic bacteria. The treatment efficiency was significantly higher by the mixed photosynthetic bacteria than that by any unitary bacterium. The optimal treatment condition by mixed bacteria was inoculation of 10.0%(v/v) of the two bacteria by 1:1, initial pH of 7.0 and initial chemical oxygen demand of 4800mgL. Under these conditions, the removal rate of chemical oxygen demand was 83.3%, which was 19.3% higher than when using Rhodobacter blasticus or 10.6% higher than when using Rhodobacter capsulatus separately. This mixed photosynthetic bacteria achieved high chemical oxygen demand removal and cell yields.
本研究采用两种光合细菌——红假单胞菌（Rhodobacter blasticus）和荚膜红假单胞菌（Rhodobacter capsulatus），考察了利用光合细菌处理厌氧消化猪废水的可行性，并探讨了影响污染物去除效率的关键因素。结果表明，光合细菌可以有效处理厌氧消化猪废水。混合光合细菌的处理效率明显高于单一细菌。混合细菌的最佳处理条件为接种比例为 1:1（体积比），接种量为 10.0%，初始 pH 值为 7.0，初始化学需氧量为 4800mg/L。在此条件下，化学需氧量的去除率为 83.3%，比单独使用红假单胞菌提高了 19.3%，比单独使用荚膜红假单胞菌提高了 10.6%。该混合光合细菌实现了高的化学需氧量去除率和细胞产率。
