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부석을 이용한 포러스콘크리트의 수질정화 성능 평가 연구
박준석 ( Jun-seok Park ),서대석 ( Dae-seuk Seo ),김봉균 ( Bong-kyun Kim ),원희재 ( Hee-jae Won ) 한국수처리학회(구 한국수처리기술연구회) 2017 한국수처리학회지 Vol.25 No.4
The focus of the former studies have been to securing appropriate pores applicable to the aquatic environment and extracting an optimum mixture which satisfies the required strength of concrete as a structure by substituting pumice stone for crushed stones used to manufacture porous concrete. However, the lack of research has been evident on the water purification performance of each optimum mixture derived from applying appropriate pores to the aquatic environment. Therefore, this study intends to compare and analyze the water purification performance of the respective optimum mixtures derived in the previous studies. According to the experimental results, it represents that the porosity or pumice stone content of porous concrete has no effect on the items of pH and DO. In the experimental results of SS, BOD, COD, T-N and T-P, their common removal efficiency was found to be higher at the design porosity of 10% than 5%. Based on the results of permeability test at the design porosity of 5%, their removal efficiency was shown to be low because continuous pores were not formed properly. By examining these issues , it is evident that if a mixture of 5-13mm crushed aggregate, 10% porosity and 10% pumice content is applied to the aquatic environment, the porous concrete can satisfy the conditions for securing appropriate pores, the required strength of concrete as a structure, and the water purification of the mixture at the same time.
제주도에서 분리한 미생물의 수질정화 성능 평가에 관한 연구
김우석 ( Woo Suk Kim ),박준석 ( Jun Seok Park ),서대석 ( Dae Seuk Seo ),김봉균 ( Bong Kyun Kim ),손승욱 ( Seung Wook Son ),박재로 ( Jae Roh Park ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.4
In this study, we collected samples from rivers in Jeju Island and other places where the self-purification capacity of rivers had been recovered by utilizing effective microorganisms(EM). And then after separating microorganisms from among the samples, we evaluated each microorganism’s water purification. In addition, we performed DNA sequencing by means of the 16S rRNA gene (16S rDNA) sequencing method for the identification of microorganisms capable of improving water quality and sought to register gene sequence information in GenBank at the National Center for Biotechnology Information (NCBI). According to the COD experiment results, C1, B4 and C6 showed the average removal efficiency of 21.3, 23.4 and 38.6% respectively. According to the T-N experiment results, the respective strains of B4, B6, M3 and C1 showed the average removal efficiency of 26.8, 34.9, 28.3 and 23.3% respectively. According to the T-P experiment results, the respective strains of B4, B6, C1 and C4 showed the average removal efficiency of 15.0, 19.4, 15.1 and 9.1% respectively. By examining the present study, it is judged that the strain of B6 has the best water purification performance. As a result of its identification, the strain of B6 showed 99.66% similarity to the strain of Bacillus subtilis. Moreover, the gene sequence information was registered in GenBank at NCBI in the USA, thereby being assigned the accession number of ‘KU672511’.
비점오염원 저감을 위한 요소기술의 연계처리 운전 효과 검토
김화중 ( Wha Jung Kim ),박준석 ( Jun Seok Park ),서대석 ( Dae Seuk Seo ),김봉균 ( Bong Kyun Kim ),이준헌 ( Joon Heon Lee ),장준영 ( Jun Young Chang ),오종민 ( Jong Min Oh ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.1
Because reduction facilities of existing non-point pollution source weren`t balanced with each element technologies, most of case were what damaged scene nature of river, neutralized pollution sources and reduction effect. Therefore it`s necessary to find a solution by integrating the operation system. Based on the comparative analysis that we have ran, we examined the capacity at individual operation`s water purification and linked the treatment to detention pond, constructed wetlands and revetment. The results of an experiment revealed that the Individual Operation shows a high level of processing performance. However, in terms of definitive processing performance linked treatment operation showed a higher level than element technology. Although performance of the Individual Operation was declined due to media clogging etc, linked treatment operation showed consistent efficiency. Therefore it has been evaluated that the linked treatment operation would improve performance on pollutant purification and run a stable operation.
유승민 ( Seung Min Ryu ),유승열 ( Seung Ryul Yoo ),박준석 ( Jun Seuk Park ),홍은정 ( Eun Jung Hong ),노태협 ( Tai Hyeop Lho ) 한국물환경학회 2013 한국물환경학회지 Vol.29 No.5
Chloroform is harmful volatile organics and representatives of Trihalomethane (THM). Well-known removal methods of Chloroform are photo oxidation or OH radical oxidation. Plasma on water surface at slightly vacuum condition (45 torr) can produce OH radical and it will help chloroform removal. 81.5% of chloroform is removed by vacuum and plasma in 10 min. Plasma can totally oxidize it till 2.8% and partially oxidize chloroform up to 18.5%. Water-surface plasma is good method to remove chloroform in short time.