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도시통근형 전동차 내 화장실 설치에 대한 승객 의식 조사
김재영(J. Y. Kim),최승보(S. B. Choi),최우석(W. S. Choi) 한국도시철도학회 2014 한국도시철도학회논문집 Vol.2 No.4
Although a city commuter train performs a basic means of transportation role at an one city, a city commuter train performed roles of urban commuter train railway as well as city commuter train due to a wide area of urban zone of life. For this reason, a city commuter train manufactured for the purpose of running of short distance running for more than two hours in numerous cases and passenger also spend 1~2 hours in a urban commuter train at one boarding in numerous cases. It is with this in mind that we wrote research paper by Passenger’s Questionnaire Survey - Case for the purpose of gathering the opinions from passengers about the commuter trains with toilet which is about train at its convenient.
김재영 ( J Y Kim ),배인휴 ( I H Bae ),정의민 ( E M Jeong ),전은영 ( E Y Joun ),김상헌 ( S H Kim ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2013 강원 농업생명환경연구 Vol.25 No.3
Cheese whey is difficult to treat for waste management because of high BOD concentration. For the treatment of cheese whey, anaerobic digestion method can be used. However, anaerobic system have been failed easily with more than 150 mg/L Lipid levels. In the study, ASBR system was tested to evaluate anaerobic digestion of cheese whey. Cheese whey produce twice more biogas than swine manure, but methane yield and hydrogen sulfide level of cheese whey was lower than that swine manure. The VFA/Alk ratio become more than 0.5 which above the optimum level. When the OLR (Organic Loding Rate) was increased to 2 g VS/L.