Effect of strong shock resistant capacity of the combined process of PPC preoxidation and BAC filtration

The effect of strong shock resistant capacity of the combined process of PPC preoxidation and BAC filtration was investigated in the treatment of surface water. The compared experimental results show that the organics removal rate in coagulation process and filtration process is enhanced and the steady running period in filtration process is shortened, which suggests that the combined processes of PPC preoxidation and biological activated carbon filtration have higher strong shock resistant capacity for organic matters and ammonia variation. In the case that raw water is polluted seriously, adding aeration process before biofilter process is an easy and effective way to enhance the biological process for organics removal.