http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
판지 공정수 처리에 있어 칼슘제거 및 제지품질의 변화에 관한 연구
이원근 ( Won Kwon Lee ),신응배 ( Eun Bai Shin ),박대원 ( Dae Won Pak ),손성섭 ( Seong Seop Son ),이상봉 ( Sang Bong Lee ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.5
These days many mills began to reduce the amount of water consumption by reusing treated water, which resulted in sharp elevation of organics level in their white water. In addition to the increase of organics, calcium hardness also increases since recycled paper is used as raw material in liner paper industry. Detrimental effects which high level of organics and calcium hardness may cause in paper industry were well reported. In this paper new process using UASB+CO_2 Stripping unit was suggested to remove both organics and calcium hardness from wastewater of liner paper industry, Furthermore effects of treated process water on paper quality were also elucidated using paper sheet former. As results, the removal efficiency of COD was maintained more than 70 % till COD loading was up to 18 kg COD/㎥d, methane gas production rate increased in proportion to COD loading and its ratio was estimated about 0.15 ∼ 0.25 g CH_4/g COD removed. CO_2 Stripping unit was not influenced greatly in HRT`s change, and removed calcium hardness effectively without additional chemical reagents like as sodium hydroxide. Since treated water by UASB+CO_2 stripping unit contains less VFA and calcium ions, paper sheet formed in treated water showed fairly good improvement in the aspects of mechanical property and mill operation.
생활폐수 처리용 생물막 반응기에서 담체 재질의 종류에 따른 미생물상의 차이
김무훈(Moo Hoon Kim),조재현(Jae Hyun Cho),김용환(Yong Hwan Kim),이용우(Yong Woo Lee),이원근(Won Kwon Lee) 한국물환경학회 1998 한국물환경학회지 Vol.14 No.3
The objective of this research is to compare the differences of microbial phases on different biofilm media for synthetic organic wastewater. The research on microbial structures and activities in biofilm media is very important in determining the characteristics and materials of the media depending on the appearance of micro-population. In this research, the microbial population and morphology were evaluated on different media through various techniques. According to our bench-scale test results, regardless of media types, the protozoa first settled down on media with organics, and then the bacteria were settled.