| Abstract |
| In order to remove nonbiodegradible materials as well as nitrogen and phosphorus from mixtured wastewater of domestic wastewater, night-soil, and leachate from the waste landfill site, this researches were performed to evaluate a characteristics of the treatment of anaerobic-oxidation biofilm process (AOBP) using ceramic media of new biological process. The AOBP consists of anaerobic, aerobic and anoxic zones. The experiment was carried out at S Wastewater Treatment Plant, located at Kyungbuk province. Based on the results of this research, a mixed domestic wastewater with nightsoil and leachate resulted in increase of nitrogen and phosphorus levels with heavy metals. At volumetric loadings of 0.08∼0.62 ㎏ BOD/㎥.d, 0.06∼0.36 ㎏COD/㎥.d and 0.07∼0.64 ㎏SS/m3.d, the percentages of BOD, COD, and SS removal averaged 90%, 80%, and 90%, respectively with all effluent of less than 10 ㎎/l. total nitrogen(TN) and total phosphorus(TP) removal were 50% with effluent of 7㎎/l and 70% with effluent of 0.6 mg/l , respectively. Influent BOD/TN ratio ranged from 2.82 to 7.38 and BOD/TP ratio from 15.57 to 61.80. TP removal averaged 60% at TN/TP ratio of 7. At linear velocity(LV) 50m/day of the AOBP system, the removal rates averaged more than 85% for BOD and SS, and 70% for COD. TN and TP removals at more than LV 40m/day averaged 50% and 65%, respectively. |
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| Key Words |
| mixtured wastewater, anaerobic-oxidation biofilm process, night-soil, leachate, anaerobic-oxidation biofilm process, heavy metal, volumetric loadings, BOD/TN ratio, TN/TP ratio |
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