Journal of Environmental Engineering Technology ›› 2017, Vol. 7 ›› Issue (3): 293-299.doi: 10.3969/j.issn.1674-991X.2017.03.042

• Water Pollution Control Technology • Previous Articles     Next Articles

Pilot-scale treatment of pharmaceutical comprehensive wastewater by ABR-CASS fed with different batches of influent

LIAO Miao1,FAN Yadong1,2,LIU Shiyue1,3,WEI Jian1,LIU Yang2,ZENG Ping1   

  1. 1. Research Institute of Urban Water Environment, Chinese Research Academy of Environmental Sciences
    2. Department of Civil and Environmental Engineering, University of Alberta
    3. School of Water Resources and Environment, China University of Geosciences
  • Received:2017-02-03 Revised:2017-04-13 Online:2017-05-20 Published:2017-05-20
  • Contact: ZENG Ping E-mail:zengping@craes.org.cn

Abstract:

A pilot-scale anaerobic baffled reactor-cyclic activated sludge system (ABR-CASS) reactor was employed to treat three batches of pharmaceutical wastewater from the same pharmaceutical factory. ABR and CASS showed different treatment to the wastewater. The ABR was almost hardly be affected by the components from different batches of pharmaceutical wastewater. However, the influence to CASS was great. CASS could run stably with sludge loading of 0.012 kg COD/(kg MLSS·d) when fed with the first batch of ABR effluent. For the whole system, the overall efficiencies of COD and NH3-N were 92.54% and 95.77%, separately. However, CASS could not endure the wastewater when fed with the third batch of ABR effluent. GC-MS analysis showed that the toxic compounds of tributylamine and p-methyl phenol from the third batch of ABR effluent might be the main factors caused the crash of CASS. To guarantee stable operation of the whole ABR-CASS system, the elimination capability of ABR on influent key toxic compounds should be concerned to provide suitable influence for CASS operation.

Key words: pharmaceutical wastewater, ABR-CASS, pilot-scale experiment, influent components, toxic compounds

CLC Number: 

  • X703