The Removal of Organics in an Oxidation Ditch

산화구에서의 유기물 처리에 관한 연구

The oxidation ditch is an efficient, low cost form of treatment of domestic and many industrial waste. It has gained rapid acceptance because of its simplicity, low cost operation, ease of operation, simple mintenance and flexibiltiy. The objective of this investigation was to measure the removal of organics in an existing dithc that does not have return sludge and which is not preceded by primary sedimentation. To accomplish this objective, samples of the wastewater influent and effluent were collected from the wastewater treatment plant of Mansfield, Texas during practical training. These samples were collected over an extended period of time to obtain samples at various treatment temperatures. Two analytical tests, COD and suspended solids, were used to monitor the operation of the plant. The results show that high removal efficiencies were obtained at high temperatures, with the efficiency decreasing as the temperature decreased to approximatedly 16$^{\circ}C$, at which point the efficienty tmeperature relationship appeared to stabilize.

직장이나 가정의 하수를 처리하기 위하여 배수구를 이용할 수 있다. 본 실험에서는 침전처리를 하지 않은 폐수를 반송슬럿지가 없는 구에서 처리할 경우 유기물 처리를 조사하였다. 유기물 처리효율은 온도에 영향을 받고 있으며 16$^{\circ}C$이상에서는 효율이 온도상승에 따라 증가하나 16$^{\circ}C$이하에서는 온도변화에 따른 효율의 차이는 크게 나타나지 않았다.