A sewage was treated using serially combined vertical(VFCW)and horizontal flow sand-filled reed constructed
wetland(HFCW) with intermittent feeding. The sand had 1∼3 ㎜ diameter. The sewage entering the sewage treatment
plant of Gyeonsang National University was fed into the reed constructed wetland bed for 10 minutes every 6 hours
at the hydraulic load of 314 L/㎡?day based on the surface ares of the VFCW. In the VFCW effluent pH values
were lower than those of the influent, whereas they were higher than those of the influent in the HFCW. DO values
were increased in VFCW, but they were decreased in the HFCW. The OTR was 58.72 g O2/㎡ㆍday in the VFCW
and 7.72 g O2/㎡ㆍday in the HFCW. Average removal efficiencies were SS 94.80%, BOD 90.77%, CODCr 85.87%,
CODMn 87.72%, T-N 64.74%, NH4
+-N 86.44%, T-P 87.70%. Nearly, half of T-N in the effluent was NO3
--N but
the concentration of NO2
--N in the effluent was less than 0.64 mg/L