| Title |
A Study on the Characteristics of Sewage Discharge by Building Use Based on Water Consumption |
| Authors |
정병환(Byung-Hwan Jeong) ; 장영호(Young-Ho Jang) ; 김태영(Tae-Young Kim) ; 강진영(Jin-Young Kang) ; 김연진(Yeon-Jin Kim) ; 황찬원(Chan-Won Hwang) |
| DOI |
https://doi.org/10.15681/KSWE.2025.41.1.10 |
| Keywords |
Notification value; Sewage quantity calculation; Sewage treatment facilities; Water pollution contro |
| Abstract |
This study presents a reliable improvement plan for the Ministry of Environment’s notice by analyzing the concentration and water consumption of sewage in buildings that frequently violate discharge standards. These include Chinese and Korean restaurants, factories, and logistics centers classified as low-load generating facilities, as well as pensions and training centers, which show significant fluctuations in sewage generation over time. The biochemical oxygen demand (BOD) concentration in sewage from Chinese restaurants ranged from 1458.8 to 1550.0 mg/L, which is 2.7 to 2.8 times higher than the regulatory standard of 550 mg/L. In comparison, sewage from Korean restaurants had BOD concentrations between 1135.1 and 1206.0 mg/L, which is 3.4 to 3.7 times above the standard of 330 mg/L. The nutrient salts (total nitrogen and total phosphorus) in sewage from high-load restaurants measured 43.1 mg/L and 7.0 mg/L, respectively, representing 39.2% and 70.4% of the concentrations recommended in the Water Pollution Control Guidelines. Additionally, it was found that the sewage treatment capacity at logistics centers equipped with unmanned automation facilities was overestimated by 388% compared to actual water usage. In contrast, accommodations such as pensions exhibited varying sewage generation based on the day of the week and season. For instance, water usage on Saturdays was 4.9 times higher than on weekdays (Monday to Thursday), while usage at training centers was 0.3 times lower on weekends. Given the significant variation in sewage volume and concentration based on the building's purpose, it is recommended that sewage treatment facility designs fully consider site-specific conditions when calculating load capacity. |