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토양칼럼을 이용한 초기우수 중 염양염류의 수변녹지 토양에서의 제거도 평가
윤석표,최지용 한국물환경학회 2004 한국물환경학회지 Vol.20 No.3
To investigate removal effects of nutrients in stormwater runoff by soil of riparian protection zone, soil column experiment was conducted for 20 months. Artificial stormwater runoff containing phosphate and nitrate was applied on the surface of soil column twice a week, and phosphate and nitrate concentrations were measured from the leached water. Soil of riparian protection zone reduced the released amount of infiltrated water to the surrounding water. After infiltration of 1m depth of soil column, average removal rates of phosphate and nitrate were 97.7% and 74.7%, respectively. As main mechanisms of phosphate are adsorption to soil particle and utilization by plants, periodical replacement of soil and harvesting of plant at the end of growing season are required. For the removal of nutrients in stormwater runoff by the soil layer, soil of riparian protection zone has higher hydraulic conductivity to infiltrate stormwater. Sandy soil having hydraulic conductivity of about 1?0^(-2)㎝/s range might be appropriate for this purpose.
( Seok-pyo Yoon ) 한국폐기물자원순환학회 2022 ISSE 초록집 Vol.2022 No.-
In this study, physical composition analysis was conducted on household waste collected from the storage pit of the household waste incinerator once a month (36 times in total) for three years. The main results obtained from the survey results are as follows. According to a survey of the physical properties of household waste, vinyl/plastic was the highest at 30.2%, followed by food at 26.5%, paper at 14.1%, and fiber at 9.3%. The annual difference in food and plastics is attributed to an increase in food composition ratio and a relatively decrease in plastic composition ratio in 2021, which is presumed to be due to less eating out and ordering delivery food at home due to the COVID-19 situation. Since food waste is separately discharged and recyclable waste is also separated, it can be seen that the variation of major wastes in the household wastes subject to incineration is not large by season. The average weight of one discarded mask was 5.97±0.94 g. The weight ratio of incineration standard garbage bags among household wastes was 1.33±0.46%. The low calorific value estimated by the average physical composition was 3,762kcal/kg, showing a result almost similar to the low calorific value of waste generated in the household part of the fifth waste statistical survey.
윤석표(Seok-Pyo Yoon) 유기성자원학회 2021 유기물자원화 Vol.29 No.1
본 연구는 하수슬러지 소각재에 비교적 높은 함량으로 존재하는 인을 회수하기 위한 국내외 사례를 조사한문헌연구로서 습식방법 및 열화학적 방법에 의한 인의 회수 및 중금속 제거와 관련한 실험조건과 영향인자 등을논의하였다. 하수슬러지 소각재의 인 회수 기술 상용화를 위해서는 인 회수과정에서 발생되는 폐수, 잔재물의처분, 첨가 약품과 에너지 소모의 최소화 등 전체 시스템의 경제성 측면에서 소각시설과 연계한 집적처리공정이바람직할 것으로 판단된다. This study is a literature review on the recovering phosphorus from Incinerated Sewage Sludge Ash(ISSA), which has relatively high content of phosphorus. Experimental conditions and influencing factors related to the recovery of P and removal of heavy metals by wet and thermochemical methods were discussed. For the practical application of the recovery of P from ISSA, an integrated process linked to incineration facilities is required in terms of economy from the perspective of the entire system including disposal of wastewater and residues generated during the recovery process, and minimizing added chemicals and energy consumption.
윤석표(Seok-Pyo Yoon) 유기성자원학회 2019 유기물자원화 Vol.27 No.1
본 연구에서는 최근 20년간 국내외에서 연구가 진행되었던 실험실 규모 모의매립조에 관한 연구 결과를 종합적으로 검토하여 운전인자의 종류, 운전목적, 장치의 크기 등을 조사하였다. 이를 통해서 실험실 규모 폐기물 모의매립조를 활용하여 수행할 수 있는 연구 내용과 한계에 대하여 논의하였으며, 이는 추후 관련 연구를 수행하는데 있어서 참고자료로 활용할 수 있을 것이다. In this study, a comprehensive review of the results of the research on the lab-scale waste lysimeter or landfill simulation reactor, which has been conducted in Korea and abroad for the last 20 years, were investigated for the type of operation parameters, the purpose of the research, and the size of the device. From the results, the contents and limitations of lab-scale lysimeter research were discussed, and this can be used as a reference for further research.