| Title |
Performance Evaluation of Combined Sewer Overflow Treatment using Filtration Pilot Device |
| Authors |
이준호 ( Lee Jun Ho ) ; 신용균 ( Shin Young Gyun ) |
| DOI |
https://doi.org/10.15681/KSWE.2019.35.5.409 |
| Keywords |
Backwashing; CSO; Filtration; PSD |
| Abstract |
In this study, a 480 m3/day pilot device was constructed through laboratory experiments based on the Ministry of Environment manual. The purpose of this study was to analyze the characteristics of CSO treatment and backwashing characteristics by applying the pilot device to the field. The purpose of this study was to acquire the basic data necessary for the design and operation management of the real scale filtration type non-point pollution control system. The filtration was conducted while maintaining the linear velocity of 20m/hour. The CSO treatment efficiencies of the pilot devices were 0.4-76.1%(mean 49.0 %), SS 51.4-91.6%(mean 77.8%), COD 22.2-59.4% (mean 38.3%) and TP 14.5-52.6%(mean 38.1%),respectively. The correlation coefficient between SS and the turbidity of influent water was 0.90, higher than that of CSO. To operate the treatment system effectively, the turbidity can be easily measured in real time as the monitoring item is the most appropriate because SS is the main target substance of the non-point source. As a result of analyzing the adsorbent treatment characteristics of PP filter material applied to this pilot device, the average particle diameter range of influent was 4.6-40.1 ㎛(mean 21.2 ㎛) and the treated water was 0.9-24.5 ㎛(mean 6.4 ㎛), respectively. Particles of approximately 10m or less are leached out, and so it is necessary to compensate for the raw water containing micro particulate matter. |