研究了含盐量分别为2.5%和5%,有机负荷分别为8 kg COD/(m3.d)和1.6 kg COD/(m3.d)条件下好氧颗粒污泥中自养菌和异养菌的成长情况,研究结果如下:(1)系统在高COD负荷条件下抗盐度的冲击能力要强于低负荷条件;(2)从4个反应器对COD的去除...研究了含盐量分别为2.5%和5%,有机负荷分别为8 kg COD/(m3.d)和1.6 kg COD/(m3.d)条件下好氧颗粒污泥中自养菌和异养菌的成长情况,研究结果如下:(1)系统在高COD负荷条件下抗盐度的冲击能力要强于低负荷条件;(2)从4个反应器对COD的去除效果来看,含盐量对异养菌的影响要低于硝化自养菌;(3)在低负荷情况下,硝化自养菌为优势菌种,在一个周期内产生的NO3--N要高于高负荷,而在高负荷情况下,异养菌为优势菌种。展开更多
The number of heterotrophic bacteria and vibrios in shoal for Bullacta exarata rearing fluctuated mainly within 1.25×10 4~7.21×10 4 cfu·g -1 and 0~1.08×10 4 cfu·g -1 ,respectively. 173 strai...The number of heterotrophic bacteria and vibrios in shoal for Bullacta exarata rearing fluctuated mainly within 1.25×10 4~7.21×10 4 cfu·g -1 and 0~1.08×10 4 cfu·g -1 ,respectively. 173 strains of bacteria, mainly belong to 13 genera were isolated. The predominant genera were composed of Bacillus,Photobacterium,Pseudomonas,Vibrio and some genera of Enterobacteriaceae . The number of bacteria changed in line with the alteration of the temperature,and was especially affected by the organic matter content after the use of pesticide. The predominant genera such as Bacillus were closely related with the environmental deterioration of rearing shoal.展开更多
文摘研究了含盐量分别为2.5%和5%,有机负荷分别为8 kg COD/(m3.d)和1.6 kg COD/(m3.d)条件下好氧颗粒污泥中自养菌和异养菌的成长情况,研究结果如下:(1)系统在高COD负荷条件下抗盐度的冲击能力要强于低负荷条件;(2)从4个反应器对COD的去除效果来看,含盐量对异养菌的影响要低于硝化自养菌;(3)在低负荷情况下,硝化自养菌为优势菌种,在一个周期内产生的NO3--N要高于高负荷,而在高负荷情况下,异养菌为优势菌种。
文摘The number of heterotrophic bacteria and vibrios in shoal for Bullacta exarata rearing fluctuated mainly within 1.25×10 4~7.21×10 4 cfu·g -1 and 0~1.08×10 4 cfu·g -1 ,respectively. 173 strains of bacteria, mainly belong to 13 genera were isolated. The predominant genera were composed of Bacillus,Photobacterium,Pseudomonas,Vibrio and some genera of Enterobacteriaceae . The number of bacteria changed in line with the alteration of the temperature,and was especially affected by the organic matter content after the use of pesticide. The predominant genera such as Bacillus were closely related with the environmental deterioration of rearing shoal.