[Denitrifying phosphorus removal in MUCT-MBR].
The self-designed MUCT-MBR simplifies the MUCT process with reducing reactors from 5 to 2, which greatly reduces land occupied by equipment. Instead of secondary sedimentation tank, the membrane effluent quality is quite safe, and the operation is simple. In the investigation about simultaneous phosphorus and nitrogen removal of MUCT-MBR, the results showed that: when the proportions of C, N and P in the influent were 33.3/5/1-25/5.5/1, the average removal rate of COD, TN and TP in the whole experimental process were 89.3%, 75.4% and 79.2%, respectively. And the sludge settling capacity had no influence on the membrane effluent quality. The key factor of N and P removal rates is denitrifying phosphorus removal in anoxic condition. The proportion of denitrifying phosphate accumulating organisms (DPAOs) and the rate of denitrifying phosphorous removal were 84.2% and 67.07% on the 58th day, respectively.
Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, School of Environmental and Biological Science and Technology, Dalian University of Technology, Dalian 116024, China. lpxja@126.com
Peng-Xiao
PX
Liu
Han-Min
HM
Zhang
Xiao-Lin
XL
Wang
Jing-Ni
JN
Xiao
Feng-Lin
FL
Yang
D000332:Aerobiosis; D000693:Anaerobiosis; D019149:Bioreactors / Q000382:microbiology*; D008567:Membranes, Artificial; D009584:Nitrogen / Q000302:isolation & purification*; D010758:Phosphorus / Q000302:isolation & purification*; D014865:Waste Disposal, Fluid / Q000379:methods*
D008567:Membranes, Artificial; D010758:Phosphorus; D009584:Nitrogen