Affordable Access

Removal of disinfection by-products formation potential by biologically intensified process.

Authors
  • An, Dong
  • Li, Wei-guang
  • Cui, Fu-yi
  • He, Xin
  • Zhang, Jin-song
Type
Published Article
Journal
Journal of Environmental Sciences
Publisher
Elsevier
Publication Date
Jan 01, 2005
Volume
17
Issue
2
Pages
315–318
Identifiers
PMID: 16295913
Source
Medline
License
Unknown

Abstract

The removal of disinfection by-products formation potential (DBPFP) in artificially intensified biological activated carbon (IBAC) process which is developed on the basis of traditional ozone granular activated carbon was evaluated. By IBAC removals of 31% and 68% for THMFP and HAAFP were obtained respectively. Under identical conditions, the removals of the same substances were 4% and 32% respectively only by the granular activated carbon (GAC) process. Compared with GAC, the high removal rates of the two formed potential substances were due to the increasing of bioactivity of the media and the synergistic capabilities of biological degradation cooperating with lactivated carbon adsorption of organic compounds. A clear linear correlation (R2 = 0.9562 and R2 = 0.9007) between DOC HAAFP removal rate and Empty Bed Contact Time (EBCT) of IBAC process was observed, while that between THMFP removal rate and EBCT of GAC was R2 = 0.9782. In addition certain linear correlations between THMFP, HAAFP and UV254 (R2 = 0.855 and R2 = 0.7702) were found for the treated water. For IBAC process there are also more advantages such as long backwashing cycle time, low backwashing intensity and prolonging activated carbon lifetime and so on.

Report this publication

Statistics

Seen <100 times