In order to further explore the mechanism of denitrifying phosphorus removal,the growth characteristics and denitrifying phosphorus removal characteristics of a typical denitrifying phosphate accumulating bacteria(DPB...In order to further explore the mechanism of denitrifying phosphorus removal,the growth characteristics and denitrifying phosphorus removal characteristics of a typical denitrifying phosphate accumulating bacteria(DPB) which was isolated by previous experiment were studied.The effect of different electron acceptors on the efficiency of nitrogen and phosphorus removal was investigated by pure bacteria and reactor statics simulation tests.The growth curve of the DPB was typical,and its incubation period was less than 1 h and the logarithmic phase about 14 h.The result showed that the stain could utilize both nitrite and nitrate as different electron acceptors to take up phosphorus.And there was a good linear correlation between P removal and NO-3-N removal during phosphorus removal process.The sensitivity to nitrite of the strain was low.The effect of electron acceptors on phosphorus removal was not significant.The efficiency of removal for phosphorus and the nitrate was both above 60%,and that for nitrite was 100%.展开更多
为获得反硝化聚磷菌(DNPAOs)干粉菌剂,以反硝化聚磷菌B8液态菌剂为菌种来源,以麦麸、玉米干粉混合物作为载体,以牛肉膏蛋白胨培养基为发酵液,进行增菌培养.在麦麸、玉米干粉载体配比(W/W)为85%∶15%,投菌液量为4 m L·g^(-1)干粉,...为获得反硝化聚磷菌(DNPAOs)干粉菌剂,以反硝化聚磷菌B8液态菌剂为菌种来源,以麦麸、玉米干粉混合物作为载体,以牛肉膏蛋白胨培养基为发酵液,进行增菌培养.在麦麸、玉米干粉载体配比(W/W)为85%∶15%,投菌液量为4 m L·g^(-1)干粉,发酵液用量为4 m L·g^(-1)干粉的条件下制得干粉菌剂.其使用效果为:(1)当主要污水处理因子为硝酸盐氮时,干粉菌剂成品的最佳发酵液p H值为5.5,该菌剂对化学需氧量、硝酸盐氮和总磷的去除率可达43.26%、92.76%和65.77%;(2)当主要处理因子为总磷时,则同等条件下所制得的干粉菌剂成品的最佳发酵液p H值为6.5,该菌剂对化学需氧量、硝酸盐氮和总磷的去除率可达44.41%、56.21%和87.30%.扫描电镜显示B8菌株附着于菌剂载体上,吸收培养液的营养用于繁殖生长及发酵,干燥后B8可固定于载体上,再将其投放于待处理废水中即可发挥其菌效.展开更多
文摘In order to further explore the mechanism of denitrifying phosphorus removal,the growth characteristics and denitrifying phosphorus removal characteristics of a typical denitrifying phosphate accumulating bacteria(DPB) which was isolated by previous experiment were studied.The effect of different electron acceptors on the efficiency of nitrogen and phosphorus removal was investigated by pure bacteria and reactor statics simulation tests.The growth curve of the DPB was typical,and its incubation period was less than 1 h and the logarithmic phase about 14 h.The result showed that the stain could utilize both nitrite and nitrate as different electron acceptors to take up phosphorus.And there was a good linear correlation between P removal and NO-3-N removal during phosphorus removal process.The sensitivity to nitrite of the strain was low.The effect of electron acceptors on phosphorus removal was not significant.The efficiency of removal for phosphorus and the nitrate was both above 60%,and that for nitrite was 100%.
文摘为获得反硝化聚磷菌(DNPAOs)干粉菌剂,以反硝化聚磷菌B8液态菌剂为菌种来源,以麦麸、玉米干粉混合物作为载体,以牛肉膏蛋白胨培养基为发酵液,进行增菌培养.在麦麸、玉米干粉载体配比(W/W)为85%∶15%,投菌液量为4 m L·g^(-1)干粉,发酵液用量为4 m L·g^(-1)干粉的条件下制得干粉菌剂.其使用效果为:(1)当主要污水处理因子为硝酸盐氮时,干粉菌剂成品的最佳发酵液p H值为5.5,该菌剂对化学需氧量、硝酸盐氮和总磷的去除率可达43.26%、92.76%和65.77%;(2)当主要处理因子为总磷时,则同等条件下所制得的干粉菌剂成品的最佳发酵液p H值为6.5,该菌剂对化学需氧量、硝酸盐氮和总磷的去除率可达44.41%、56.21%和87.30%.扫描电镜显示B8菌株附着于菌剂载体上,吸收培养液的营养用于繁殖生长及发酵,干燥后B8可固定于载体上,再将其投放于待处理废水中即可发挥其菌效.
