[Optoelectronic PCB Wastewater Treatment by Partial Nitrification-ANAMMOX Integrative Reactor].
The feasibility and operating characteristics of treatment of printed circuit board (PCB) wastewater by using autotrophic nitrogen removal process in partial nitrification and ANAMMOX integrative reactor were investigated. The reactor had startup successfully and achieved the stable nitrogen removal efficiency. The results showed that, after 80d operation, the nitrogen removal rate increased and was up to 1. 29 kg . (m3 . d)-1, the effluent NH4+-N and NO2- -N were decreased and stabilized at 4. 0 mg . L -1, 9. 8 mg . L-1 respectively, when the influent concentration of NH4+-N maintained at 220 mg . L -1. At the same time, the concentration of total nitrogen was less than 50 mg . L-1 in effluent, which meet the quality emissions requirements. The NO2- -N production rate was up to 2. 05 kg . (m3 . d)-1 by nitrite bacteria in aerobic zone, and the highest nitrogen removal rate was 2. 91 kg . (m3 . d) -1 by ANAMMOX. bacteria in anaerobic zone, which illuminated functional bacteria were steadily grown in the corresponding region. The inorganic ammmonia in PCB wastewater could be removed by autotrophic nitrogen removal process in nitrification and ANAMMOX integrative reactor.
Yan
Y
Yuan
Xiang
X
Li
Cheng
C
Zhou
Zong-heng
ZH
Chen
D001419:Bacteria / Q000378:metabolism; D001673:Biodegradation, Environmental; D019149:Bioreactors; D059029:Electronic Waste; D058465:Nitrification; D009573:Nitrites / Q000737:chemistry; D009584:Nitrogen / Q000737:chemistry; D011078:Polychlorinated Biphenyls / Q000737:chemistry*; D062065:Wastewater / Q000737:chemistry*
D009573:Nitrites; D009584:Nitrogen; D011078:Polychlorinated Biphenyls; D062065:Wastewater