| Title |
Establishment of Effluent Limitation based on Wastewater Characteristics and Treatment Technology |
| Authors |
권오상 ( Oh Sang Kwon ) ; 정진영 ( Jin Young Jung ) ; 허태영 ( Tea Young Heo ) ; 전항배 ( Hang Bae Jun ) ; 이연희 ( Youn Hee Lee ) ; 박상민 ( Sang Min Park ) |
| Keywords |
Effluent limitation; Hospital industry; Industrial point source; Technology-base standard |
| Abstract |
This study contemplated domestic and other country`s effluent limitation standards and suggested a methodology to establish technology-base limitation value. Current effluent limitation regulates industrial point sources discriminated by discharge flow rate and by regional distinction in Korea. Discharged BOD5 load from large-scale plants(flow rate above 2,000 m3/day) exceeds 50% of overall industrial wastewater, which present rationale for discrimination based on plant size. However, regional distinction and pollutant- specific regulation might be insufficient to meet practical effectiveness of wastewater management policy, due to the nearly same limitation. Water quality data and treatment methods were investigated in hospital industry. And their distribution of effluent BOD5 concentrations was statistically analyzed to suggest limitation value. Effluent BOD5 concentrations showed lognormal distribution and 95th percentile was corresponded to 87.9 mg/L, which could be suggested as tentative effluent limitation in hospital industry. The 95th percentile of log-transformed distribution showed similar value of 86.5 mg/L. This study demonstrated reasonable methodology for establishing effluent limitation reflecting wastewater characteristic and treatment technology in separately categorized industry. |