Purification effect of a compound-bacteria agent on eutrophic wastewater
一种复合菌制剂对富营养化污水的净化作用研究

Targeting on effectively removing chemical oxygen demand (COD), four bacterial strains with COD removal ability were isolated from eutrophic pond water and piggery wastewater. The isolated NCG1, identified as Pseudomonas stutzeri by morphological and physiological characteristics and 16S rRNA sequential analysis, showed the highest COD removal efficiency in the four bacteria. Synergistic effect in purification was found when NCG1 was used together with C-4, a strain with high inorganic salt nitrogen removing ability. The mixed two strains showed higher ability than single microorganism, and removed the ammonium, nitrite nitrogen and COD in the artificial wastewater up to 84.4%,86.91%,and 81.36%,respectively. This study established the method for the production of the compound-bacteria agent, which showed high efficiency on the treatment of eutrophic pond water.