Archives

  • Archives
  • >
  • Home

DOI : 10.17640/KSWST.2017.25.6.49 ,    Vol.25, No.6, 49 ~ 56, 2017
Title
Perchlorate Removal using Sewage in a Fixed Biofilm Reactor
Ziqiao Liao , 최혁순 Hyeoksun Choi
Abstract
The purpose of this research was to investigate whether domestic sewage as carbon substrates and nutrients can be used to reduce perchlorate in biological perchlorate treatment system. A fixed biofilm reactor was used to reduce perchlorate in sewage containing 4.41~7.65 mg/L perchlorate at various EBCT conditions such as 8hours, 4hours, and 2hours. 4.41 mg/L of perchlorate was reduced to 0.02 mg/L of perchorate which means 99.5% of perchlorate removal efficiency at 4hours of EBCT in a fixed biofilm reactor. Perchlorate and nitrate in sewage were reduced simultaneously at 4hours of EBCT in a fixed biofilm reactor. However, perchlorate removal efficiency decreased slightly in the presence of nitrate at 4hours EBCT in a fixed biofilm reactor compared to the previous experiment result in the absence of nitrate.
Key Words
Perchlorate, Sewage, EBCT, Biofilm reactor
pdf view PDF