title: Effects of rapid temperature rising on nitrogen removal and microbial community variation of anoxic/aerobic process for ABS resin wastewater treatment.
abstract: ABS resin wastewater is a high-temperature nitrogenous organic wastewater. It can be successfully treated with anoxic/aerobic (A/O) process. In this study, the effect of temperature on nitrogen removal and microbial community after quick temperature rise (QTR) was investigated. It was indicated that QTR from 25 to 30 °C facilitated the microbial growth and achieved a similar effluent quality as that at 25 °C. QTR from 25 to 35 °C or 40 °C resulted in higher effluent concentration of chemical oxygen demand (COD), biochemical oxygen demand (BOD5), total nitrogen (TN), and total phosphorus (TP). Illumina MiSeq pyrosequencing analysis illustrated that the richness and diversity of the bacterial community was decreased as the temperature was increased. The percentage of many functional groups was changed significantly. QTR from 25 to 40 °C also resulted in the inhibition of ammonia oxidation rate and high concentration of free ammonia, which then inhibited the growth of NOB (Nitrospira), and thus resulted in nitrite accumulation. The high temperature above 35 °C promoted the growth of a denitrifying bacterial genus, Denitratisoma, which might increase N2O production during the denitrification process.
authors.affiliation: School of Environmental Science and Engineering, Chang'an University, Xi'an, 710064, People's Republic of China. Huilong.Luo@chd.edu.cn.|Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China. Huilong.Luo@chd.edu.cn.|State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. Huilong.Luo@chd.edu.cn.
authors.forename: Huilong
authors.initials: H
authors.lastname: Luo
authors.affiliation: Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.|State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
authors.forename: Yudong
authors.initials: Y
authors.lastname: Song
authors.affiliation: Research Center of Water Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.|State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China.
authors.forename: Yuexi
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: School of Environmental Science and Engineering, Chang'an University, Xi'an, 710064, People's Republic of China.
authors.forename: Liwei
authors.initials: L
authors.lastname: Yang
authors.affiliation: School of Environmental Science and Engineering, Chang'an University, Xi'an, 710064, People's Republic of China.|UCD Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Belfield, Dublin 4, Ireland.
authors.forename: Yaqian
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D000180:Acrylic Resins; D000641:Ammonia / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology; D002070:Butadienes; D058440:Denitrification; D009573:Nitrites / Q000032:analysis; D009584:Nitrogen / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D011137:Polystyrenes; D013696:Temperature; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater
chemical_list: D000180:Acrylic Resins; D000641:Ammonia; D002070:Butadienes; D009573:Nitrites; D009584:Nitrogen; D010758:Phosphorus; D011137:Polystyrenes; D062065:Wastewater; C024636:ABS resin
keywords: 16S rRNA gene sequences; ABS resin wastewater; Nitrogen removal; Quick temperature rise