SVI 측정시간 단축 및 측정 장치 부피 축소를 위한 슬러지의 침강성 평가

Sewage treatment facility is the fundamental social infrastructure for the development of the city and citizen`s healthy life. It tends to be constructed in a big city mainly, but small villages don`t have enough facilities because of insufficient investment. The operational management of sewage treatment facility is more difficult. Sludge Volume Index(SVI) is widely used as a main parameter in sewage treatment facility for operation and management. But, the time required of SVI is long and there is less technical manpower in this filed. To solve this problem, sedimentation test of various sludge having different properties from sewage treatment facility was performed to create algorithm to miniaturize SVI measuring time. MLSS concentration, implementing modification factor to take miniaturization of the device into account. Finally, predicted and measured SVI were compared with RMSE to increase the reliability of the algorithm. By using the SV10, estimating SV30 became possible. Also, RMSE algorithm value was 0 to 4.95 with accuracy.