龜尾市의 都市쓰레기 處理 行政의 改善에 관한 硏究

채용곤,김희동 대구보건대학 1994 대구보건대학 論文集 Vol.14 No.-

Korea has taken the aim at an economic growth to get rid of absolute poverty in the process of modernization. In result, the national income has been raised by success of economic growth policy of our government, but the quantity of garbage became greatly to increase by rapid urbanization, increase of industrial activities, and increase of national income. So, our govennment policy cecame to be necessary for solving the serious problems related to garbage in every places. Accordingly, this study analyzed the present situation and actual condition of treatment of general and industrial garbages in order to grope for problems by selecting Kumi-city as an object of this study, and this study suggested the reform measures to make a contribution toward the personal development for improvement of health and hygienes, sound democratic citizens, and personal increase in income, by reutilizing the waste materials and by providing the comfortable environment through the rational garbage treatment as well as to make a contribution toward the political, economic and social development through the environmental preservation and efficient utilization of resources by a rational garbage treatment. This study consists of 6 Chapters as follows : In Chapter 1, this study brougnt up questions on the rational and efficient treatment of garbage as well as to make recognize an importance of garbage treatment that is the most serious issue of all the mankind in establishing the purpose, objects, scope and method of this study. Also, this study examined its actual condition and efficient treatment measures of garbages in Kumi-city that is the newly industrializing city on the basis of analysis on the actual conditions from 1980 to 1990(for 11 years) in order to accomplish the purposes of this study. In Chapter 2, this study established the hypothetical model and theoretical basis of investigation. This study emphasized the rational treatment of garbage administration and attributes of object of this study on the basis of the theoretical background. Also, this study divided the garbage administration by public service and administrative approach, and analyzed the theoretical analysis, after grouped for the actual condition of garbage treatment policy. In Chapter 3, this study analyzed the present situation of garbage treatment in Kumi-city. In Chapter 4, this study analyzed each treatment process on the basis of the above analysis. In Chapter 5, this study examined the reform measures on the present problems which occurr in the process of garbage treatment on the basis of investigation and analysis in this study. In Chapter 6, this study suggested the efficient measures in the adminisunation of garbage treatment as emphasizing its importance.

대구지역의 미기상요소와 아황산가스 농도

채용곤 한국환경보건학회 1990 한국환경보건학회지 Vol.16 No.2

This study investigated to find out the patterns of the wind direction and wind speeds influenced by concentration of sulfur dioxide in Taegu area for a year in 1988.The results were as follows: Prevailing wind by months where easterly wind from May to September and the other months were westerly and / or west-north-westerly wind. Condition of calm was the most at December(8.6%). Prevailing wind by seasons were westerly and easterly wind in spring and autumn, east-north-easterly and/or west-south wind in summer, the other hand, west-south-westerly and/or west-north-westerly wind in winter. Mean concentration of sulfur dioxide (SO$_{2}$) at each sites were influenced by prevailing wind and location of industrial estates. Mean wind speeds by times were the highest at the before and after 4 P.M.,but the lowest at the before and after 5 A.M. Average wind velocity were highest at Spring (3.38m / sec).

琴湖江 隣近 部落 地下水의 理化學的 所見

蔡龍坤,張鳳基,金斗熙 慶北大學校 醫科大學 1987 慶北醫大誌 Vol.28 No.2

This study was carried out to investigate of physico-chemical status of drinking ground water near by the Gum-ho river basin, from February, 20 to March, 20, 1986. The ground water for testing was sampled 26 sites which are eleven wells, twelve electric pumps, and three simple piped water. Out of 23 kinds of phsico-chemical factors investigated, hydrogen ion, alkalinity, nitrate nitrogen, sulfate, copper, zinc, hexavalent chromium, arsenic, mercury, and lead were within allowable values for drinking. However, total hardness (sites Ⅴ-1 and Ⅵ-1), turbidity(site Ⅴ-2), ammonia nitrogen(site Ⅲ-2), chlorine(sites Ⅲ-2, Ⅲ-4, Ⅳ-1, Ⅴ-1 and Ⅵ-6) iron (site Ⅳ-2), manganese(sites Ⅱ-1 and Ⅲ-2) cadmium(sites Ⅰ-1 and Ⅲ-2), were higher than allowable value. The shorter straight distance from Gum-ho river side to sampling points, the higher concentration of alkalinity, carbon dioxide and sulfate(p<0.05). The concentration of sulfate, arsenic, and lead were negatively correlated with depth of ground water (p<0.05). In comparision of water supplying style and chemical contents; ammonia nitrogen, sulfate, lead, arsenic and mercury were higher in the well water than in the simple piped water(p<0.05). The pollution of ground water was high negative correlation with the distance of contamination sources such as toilet, cattle shed, rice field, etc.

질산성 질소 선택적인 음이온교환수지의 합성

채용곤 대구보건대학 2002 대구보건대학 論文集 Vol.22 No.-

The functional group of commercially available ion exchange resins is known to be NMe₃, of which selectivity prefers SO₄^(2-) ion to NO₃^(-) ion. Based on the fact that SO₄^(2-) ion occupies a larger space than NO₃^(-) ion in the chemical compounds, a new ion exchange resin was developed by the use of NEt₃ and N(CH₂CH₂OH₃)₃ as functional groups and subsequently determined the physicochemical properties of the newly developed ion exchange resin. As indicated at the results, the selectivity of this ion exchange resin preferred NO₃^(-) ion to SO₄^(2-) ion.

이온교환법에 의한 탈질소 공정개발의 기초연구 (Ⅲ) : 희분식 반응기에서의 반응속도론 A kinetic study in the batch reactor

채용곤,이동환,김승일,윤태경,홍성수,이민규 한국환경과학회 2000 한국환경과학회지 Vol.9 No.2

A kinetic study for anion exchange was performed for commercially available Cl^- type anion exchange resin in use to remove nitrate in water. The obtained results from the batch reactor were applied to the Langmuir and Freundlich models. The constants for Langmuir model were q_max=29.82 and b=0.202, and for Freundlich model were K=5.509 and n=1.772. Langmuir model showed better fit than Frendlich model for the experimental results. Ion exchange reaction rate was also calculated and the approximate first-order reaction, rate constant k_1 was 0.16 L/㎎·hr. Effective diffusion coefficient was obtained in the range from 9.67×10 exp (-8) to 1.67×10 exp (-6) ㎠/sec for initial concentration change, and from 6.09×10 exp (-7) to 3.98×10 exp (-6) ㎠/sec for reaction temperature change. Activation energy during the diffusion was calculated as 36 ㎉/㏖.

회분식 반응기에 의한 음이온 교환수지의 질산성 질소 제거 특성

채용곤 대구보건대학 2001 대구보건대학 論文集 Vol.21 No.-

Ion exchange performance to remove nitrate in water was studied using commercially available strong base anion exchange resin of Cl^(-)-type in the batch reactor. The performance was tested using the effluent concentration histories for batch reactor as a function of time until resins were exhausted or reached ionic equilibrium between resin and solution. Anion exchange resin used in this study was more effective than activated carbon or zeolite for nitrate removal. With large resin amount or the higher operating temperature, low initial concentration, nitrate removal characteristics for a typical gel-type resin was increased. Activation energy of intraparticle diffusion was evaluated as 34.52kJ/㏖.

대구시내 미용실의 보건위생 실태 ( Status of Health Hygiene of Some Beauty Shop in Taegu City )

채용곤 대한환경위생공학회 2001 대한환경위생공학회지 Vol.16 No.4

B型 肝炎豫防 接種後의 抗體生成率과 肝機能 檢査 成績

蔡龍坤 대구보건대학 1992 대구보건대학 論文集 Vol.13 No.-

This study was carried out in Taegu city for the some public officials and school personnel population to find out formation of Anti-HBs after hepatitis B-vaccination, and particularly the relationship between Anti-HBs formation and liver function tests (AST, ALT) from April to July 1986. The data were obtained from 657(male ; 520, female ; 137) persons who were known negative for HBsAg and Anti-HBs by RPHA or PHA technique at checking for regular physical examination. The Anti-HBs became positive in 45.5% and difference between sexes was significant(male ; 43.3%, female ; 54.0%) but not significant difference between ages. Elevated AST(>40IU/l) and ALT(>35IU/l) were not significant difference between formation group of Anti-HBs and nonformation group. The mean value of AST and ALT in Anti-HBs positives and negatives showed not significant difference.

가정용 정수기의 수질에 대한 위생학적 조사 소견 ( A Sanitary Survey on the Clean Water by Domestic Purifier )

채용곤 대한환경위생공학회 1990 대한환경위생공학회지 Vol.5 No.1

CI^(-)형 음이온 교환수지에 의한 탈질소 공정개발의 기초연구

채용곤 대구보건대학 2003 대구보건대학 論文集 Vol.23 No.-

Ion exchange performance to remove nitrate in water was studied using commercially available strong base anion exchange resin of Cl^(-) type in the continuous column reactors. The performance was tested using the effluent concentration histories for continuous column reactor as a function of time until resins were exhausted or reached ionic equilibrum between resin and solution. With large resin amount or low initial concentration, nitrate removal characteristics for a typical gel-type resin was increased. On considering the relation between the breakthrogh capacity and nitrate concentration of the influent, the use of anion exchange resin were suitable for the higher order water treatment. The nitrate removal of above 90% could be possible until effluent of above 650 BV passed to the column. Thus, the commercially available strong base anion exchange resin of Cl^(-) type the used in this study could be effectibvely used as economic material for treatment of the grounwater. The breakthrogh curves showed the sequence of resin selectivity as SO_(4)^(2-)> NO_(3)^(-)> NO_(2)^(-)> HCO_(3)^(-). The results of this study could be scaled up and used as a design tool for the water purification system of the real groundwater and surface water treatment processes.