Pilot study on combined process of catalytic ozonation and biological activated carbon for organic pollutants removal

HAN Bang-jun^1,2, MA Jun^1,2, GUAN Xiao-hong¹, HAN Hong-da³, HE Wen-jie³, ZHANG Tao¹

1.School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China;2.National Engineering Research Center of Urban Water Resources, Harbin Institute of Technology, Harbin 150090, China;3.Tianjin Water Works Group Company LTD, Tianjin 300040, China



Abstract:

A combined process of catalytic ozonation in the presence of a novel heterogeneous catalyst and biological activated carbon was investigated for the removal of priority control organic pollutants, the reduction of genotoxicity, and the improvement of biodegradable dissolved organic carbon (BDOC). Results confirm that the catalytic ozonation has higher effectiveness for the removal of refractory harmful organic pollutants, the reduction of genotoxicity and the increase of bio-degradability of organics than ozonation alone, which results in lower pollution load for subsequent biological activated carbon process, and then leads to less organic pollutants penetrating biological activated carbon. The novel catalytic ozonation with this combined process exhibits excellent performance to guarantee the safety of drinking water.

Key words:  heterogeneous catalytic ozonation  environmental priority control pollutants  biological activated carbon  genotoxicity  BDOC

DOI：10.11916/j.issn.1005-9113.2009.06.018

Clc Number:X703.1

Fund: