title: The treatment of solvent recovery raffinate by aerobic granular sludge in a pilot-scale sequencing batch reactor.
abstract: Mature aerobic granular sludge (AGS) was inoculated for the start-up of a pilot-scale sequencing batch reactor for the treatment of high concentration solvent recovery raffinate (SRR). The proportion of simulated wastewater (SW) (w/w) in the influent gradually decreased to zero during the operation, while volume of SRR gradually increased from zero to 10.84 L. AGS was successfully domesticated after 48 days, which maintained its structure during the operation. The domesticated AGS was orange, irregular, smooth and compact. Sludge volume index (SVI), SV30/SV5, mixed liquor volatile suspended solids/mixed liquor suspended solids (MLVSS/MLSS), extracellular polymeric substances, proteins/polysaccharides, average particle size, granulation rate, specific oxygen utilization rates (SOUR)H and (SOUR)N of AGS were about 38 mL/g, 0.97, 0.52, 39.73 mg/g MLVSS, 1.17, 1.51 mm, 96.66%, 47.40 mg O2/h g volatile suspended solids (VSS) and 8.96 mg O2/h g VSS, respectively. Good removal effect was achieved by the reactor. Finally, the removal rates of chemical oxygen demand (COD), total inorganic nitrogen (TIN), NH4+-N and total phosphorus (TP) were more than 98%, 96%, 97% and 97%, respectively. The result indicated gradually increasing the proportion of real wastewater in influent was a useful domestication method, and the feasibility of AGS for treatment of high C/N ratio industrial wastewater.
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Bei
authors: B
authors: Long
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Chang-zhu
authors: CZ
authors: Yang
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Wen-hong
authors: WH
authors: Pu
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Jia-kuan
authors: JK
authors: Yang
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Guo-sheng
authors: GS
authors: Jiang
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Jing-feng
authors: JF
authors: Dan
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Jing
authors: J
authors: Zhang
authors: College of Environmental Science and Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan 430074, China E-mail: 15007173775@163.com.
authors: Li
authors: L
authors: Zhang
mesh_terms: D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology*; D005591:Chemical Fractionation; D010316:Particle Size; D012722:Sewage / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry; D018508:Water Purification
chemical_list: D012722:Sewage; D012997:Solvents; D062065:Wastewater; D014874:Water Pollutants, Chemical