| Title |
Wastewater Generation and Characteristics in the Highway Service Area |
| Authors |
이의상(Eui Sang Lee), 김상채(Sang Chai Kim), 강희만(Hee Man Kang) |
| Abstract |
Most of the existing sewage treatment plants in the highway service areas are experiencing many problems in their operation and maintenance because they have been adopted indiscreetly without relevent examination about treatment processes and designed without evaluation of design factors. To solve these problems, design factors were determined by the analysis of sewage generation rate and its characteristics (BOD, SS, T-N, T-P etc.). From the results of this study, influent loadings fluctuated widely with and without restaurants and septic tanks. Sewage generation rates in weekends and high-demand seasons were higher than those in the other days. The fluctuation range of sewage generation rates and influent loadings of sewage treatment plants in the highway service areas was larger than that of the municipal wastewater and the agricultural sewage. Average influent concentration were BOD 324㎎/ℓ, SS 229㎎/ℓ , T-N 96㎎/ℓ and T-P 10㎎/ℓ, respectively. Nitrogen and phosphorus concentrations were about 3∼7times greater than those of the municipal wastewater and the agricultural sewage. All the findings might be considered when we design sewage treatment plants in the highway service areas in the future. |