[Start-up and operation characteristics of aerobic granular short-cut nitrification process].
In a lab-scale aerated upflow sludge bed (AUSB) reactor inoculated with the mixture of anaerobic granular sludge and aerobic sludge, using synthetic ammonia-rich wastewater as influent, aerobic short-cut nitrification granules were cultivated. After that, the short-cut nitrification reactor could be operated stably with very high efficiency under mesophilic condition (30 approximately 35 degrees C), and the influent loading rate (NH4(+) -N) could reach 2.5 approximately 3.0 kg/(m3 x d). The ammonia removal efficiency and the short-cut nitrification ratio (NO2(-)/NOx(-)) were above 90% respectively. Some organic COD (about 100 mg/L) existed in the influent had no obvious effects on the operation of the short-cut nitrification process. The short-cut nitrification reactor could also be operated stably with very high efficiency under ambient temperature (about 20 degrees C).
Yang
Yang
Y
Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. yangyang97@mails.tsinghua.edu.cn
Zuo
Jian-E
JE
Bu
De-Hua
DH
Gu
Xia-Sheng
XS
D000332:Aerobiosis; D000641:Ammonia / Q000737:chemistry* / Q000378:metabolism; D001420:Bacteria, Aerobic / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology; D002244:Carbon / Q000737:chemistry / Q000378:metabolism; D009930:Organic Chemicals / Q000737:chemistry / Q000378:metabolism; D012722:Sewage / Q000737:chemistry* / Q000382:microbiology; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000378:metabolism
D009930:Organic Chemicals; D012722:Sewage; D014874:Water Pollutants, Chemical; D002244:Carbon; D000641:Ammonia