Factors Influencing the Removal of COD from Coking Tail Wastewater in the Biological Aerated Filter

Abstract:

coking tail wastewater is difficult to dispose due to its hard-degradation substance. Biological Aerated Filter (BAF),with a characteristics of strong resistance to organic impact load,is a new way in treating high-concentration organic wastewater.In this paper, coking tail wastewater disposed in two-stage BAF is investigated. It shows that the optimized condition to dispose organic is that temperature is 25 ~ 35 °C, pH is7 ~8, gas-water ratio is 2~3:1, reflux ratio is 0.5~1. Under optimal conditions COD removal rate of the system remains stable around 69.10%.

• Periodical: Applied Mechanics and Materials (Volumes 90-93)
• Pages: 2949-2953
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.90-93.2949
• Online since: September 2011
• Authors: Ji Ming Liu, Yun Long Yang, Xue Yang
• Keywords: Biological Aerated Filter (BAF), Chemical Oxygen Demand (COD), Coking Wastewater, Tail

References

[1] SHU Wenlong. China's Coking Wastewater Treatment Status, Progress and the Choice of Suitable Processing Technology (Part Two) [J].Environmental Engineering,1992,10（5）:56~63

[2] XU Ying, LI Wen-ying. Immobilized Cell Technology for the Treatment of Refractory Organic Wastewater [J] . Coal Conversion, 2004, 27 (supplement): 60264

[3] LEI Ping, NIE Maixi, ZHANG Zhijie et al. a PAH Degrading Bacteria in the Degradation of Coking Wastewater Research [N]. Xi'an Jiaotong University, 2001, 35 (10) : 105521058

[4] Iwak i H, Shim izu M , Tokuyama T et al. Biodegradation of Cyclohexylam Ine by Brevibacterium Oxydans IH235A. [J]. App Lied and Environmental Microbiology, 1999, 65 (5) : 223222234

[5] Church ill S A , Harper I P, Church ill P F. Isolation and Characterization of a Mycobacterium Species Capable of Degrading Aromatic and Aliphatic Hydrocarbons[J].Applied and Environmental Microbiology, 1999, 65 (2) : 5492552

DOI: 10.1128/aem.65.2.549-552.1999

[6] cashiian J V , Vinpal R T, Kim B J et al. Aerobic Growth on Nitroglycerin as the Sole Carbon, N itrogen, and Energy Source by a Mixed Bacterial Culture[J].Applied and Environmental Microbiology, 1998, 64 (9) : 330023304

DOI: 10.1128/aem.64.9.3300-3304.1998

[7] LIU Yan Kwan, ZHOU Yi Kai,TAN Youming. Screening of Dominant Bacteria in Chloramphenicol Wastewater Treatment [J].Environmental Pollution Control Technology and Equipment, 2003, 4 (4) : 43245

[8] LI Wenying, DU jun, Bao Weiren et al. Ammonia Nitrogen Removal in Coking Wastewater in Sequencing Batch Reactor[J]. Coal Conversion, 2002, 25 (1) : 77281

[9] BAI Xiao ping,Experimental Research of Coking Wastewater by Immobilized Predominant [D]. ​​Taiyuan: Taiyuan University of Technology,(2002)

[10] SHEN Jinyou,SHEN Jinyou,WANG Lianjun et al.Kinetics of COD Removal in a Biological Aerated Filter in the Presence of 2,4,6-Trinitrophenol (Picric Acid).Chinese Journal of Chemical Engineering, 17(6) 1021—1026 (2009)

DOI: 10.1016/s1004-9541(08)60311-0