Abstract:
A continuous flow CANON system was studied by suspension carrier biofilm reactor. The results showed that the accumulation rate of NO2--N was more than 90% under the conditions of the influent NH4+-N 320-380 mg/L, the temperature (32±1)℃, HRT=48 h, DO 1.0-1.5 mg/L. After the reactor reached a stable nitrosation state and operated for 164 d, the system gradually changed into a CANON system. The results of high-through-put sequencing of 16S rDNA showed that Proteobacteria and Planctomycetes in packed biofilms were the main nitrogen-removal bacteria, while NOB was not detected.
Key words:
suspended carrier,
nitritation,
CANON,
16S rDNA
摘要：
采用悬浮载体生物膜反应器对连续流CANON系统进行了研究。结果表明，在进水NH4+-N为320~380 mg/L、温度为（32±1）℃的情况下，控制HRT为48 h、DO为1.0~1.5 mg/L时系统对NO2--N积累率>90%，在达到稳定亚硝化状态又运行164 d后，反应器逐渐转变为CANON系统。16S rDNA宏基因组高通量测序显示，Proteobacteria和Planctomycetes是填料生物膜的主要脱氮菌群，系统未检测出NOB菌属。
关键词:
悬浮载体,
亚硝化,
CANON,
16S rDNA
CLC Number:
Qiongqiong Xia,Xingcan Zheng,Bo Fan,Wenan Zhang,Yaxiong Wang,Jiaju Li,Pengfeng Li,Yaqiong Guo. Characteristics of operation and microbial community of a suspended carrier biofilm CANON reactor under continuous flow[J]. Industrial Water Treatment, 2020, 40(7): 42-46.
夏琼琼,郑兴灿,范波,张文安,王雅雄,李家驹,李鹏峰,郭亚琼. 连续流悬浮载体CANON系统运行与微生物特性[J]. 工业水处理, 2020, 40(7): 42-46.