| Abstract |
| Pollution sources are consisted point source and non-point source. There are many studies for controlling combined sewer overflow(CSOs) and storm sewer overflow(SSO). But, the study on the non-point sources in the wastewater treatment plant are not so many. Influent quantities of the 3 days and 5 days and 7 days duration data for the 5-year, 10-year, 20-year and 30 years return periods can obtained from normal probability graphs of the hourly rainfall data in 1977~2006. Wastewater treatment plant influent characteristics are simulated by SWMM from each years return periods. Wastewater treatment plant effluent characteristics are simulated by AQUASIM. Wastewater treatment plant influent characteristics are variable according to rainfall. In this paper, non-point pollution sources calculated by effluent discharge loading rates at rainy season minus effluent discharge loading rates of normal times. Non-point pollution sources of the wastewater treatment plant in rainy seasons estimated by 1.5~2.5 times of 2,404kg BOD/d that is the effluent discharge loading rates of normal times. |
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| Key Words |
| Wastewater treatment plant, Frequency analysis, Effluent simulation, Wet weather, Nonpoint pollutant source |
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