earticle

영어

The purpose of this experimental study was finally developed the treating facility to reuse the effluent of sewage treatment plant for toilet flushing water and sprinkling water for road and vegetable plants. In order to study, the laboratory scale treating facility composed with the processes of rapid coagulation, flocculation, and changeable filter was made and automatically operated, and field application test was performed for the effluents of Daejeon sewage treatment plant, small scaled sewage treating facility, combined septic tank, and public bath. For the results of test, average water qualities were 0.71NTU for turbidity, 4 mg/L for BOD, 3.4 mg/L for CODMn, 1.3 mg/L for SS, and 0.041 mg/L for TP as for the filtering flux of 94 m3/m2/d, respectively. Removal efficiencies were 91% for turbidity, 53% for BOD, 48% for CODMn, 85% for SS, and 88% for TP. Compared with the similar treating facilities, treating water quality of facility developed in this study was almost similar for BOD, CODMn, and improved with turbidity, SS and TP. It was evaluated that the developed water treating facility in this study was possible to practical use for produce the recycled water.

한국어

본 실험연구의 최종적인 목적은 하수처리장 유출수를 화장실 세척용수나 도로, 식물체의 살수용수 등 재이용에 대한 처리시설의 개발에 있다. 연구를 위해 급속응집 및 응결과 가변형 필터로 구성된 실험실 규모의 처리시설을 제작하여 자동 운전하였고, 대전시 하수처리장과 소규모 오수처리장 및 합병정화조 유출수 및 대중목욕탕 배출수에 대한 현장적용실험을 실시하였다. 실험 결과 평균 처리수질은 필터의 여과 플럭스 94 m3/m2/d에서 탁도 0.71NTU, BOD 4 mg/L, CODMn 3.4 mg/L, SS 1.3 mg/L, TP 0.041 mg/L이었으며, 제거효율은 탁도 91%, BOD 53%, CODMn 48%, SS 85% 및 TP 88%인 것으로 조사되었다. 유사처리시설과 비교하면 본 연구에서 개발한 시설의 처리수질이 BOD, CODMn의 경우는 비슷하였으나 탁도, SS 및 TP는 양호하였다. 본 연구에서 개발한 수처리 시설이 중수도 생산에 적용 가능할 것으로 평가되었다.