The removal of dichloromethane by absorption combined with iron-active carbon micro-electrolysis in a tube reactor filled respectively with iron mash

activate carbon particle and combined iron-active carbon (Fe-C)

was investigated. The result shows that removal of DCM is higher for Fe-C mixed packing than for iron mash or activate carbon one. Oxidation Reduction Potential(ORP) of solution in the reactor filled with Fe-C mixed packing rapidly drops

which can create a more reducing environment at around 180 mV

while for other two fillers there is significant difference. It was also found that removal and dechlorination of DCM can be enhanced when pH of aqueous solution decreases. After 300 min the Cl- concentration in solution is about 4 times higher at pH 1.5 than at pH 5

and the maximum rate of Cl- generation is 2.85%. The gaseous product from dechlorination of dichloromethane by Fe-C is mainly methane.