生物學的 流動層을 利用한 에멀젼상 油分除法에 關한 硏究

朴魯參 慶一大學校 1988 論文集 Vol.4 No.1

This study was carried out to experiment on the removal of emulsified olive oil in water using biological fluidized bed [BFB]. The consumption rate of oxygen by a test of BOD was considerably slow as the complicated materials in degradability . The removal of olive oil using BFB-reactor was predominant in compared with the activated sludge process. The oil component in BFB-reactor was adsorbed by media(MRPM) and sludge, and the adsorbed oil was rapidly degradable as compared to be adsorbed in the activated sludge floc. Then, the degradable time was required about 24 hours.

pumping system의 最適化 設計

朴魯參 慶一大學校 1986 論文集 Vol.2 No.1

In this paper a comprehensive econo-mathematical model of a pumping system, incorporating capital, O & M, and energy cast functions, has been developed to seek a minimum total cast of the system. The results are summarized as follows. 1) The coefficients and exponents of the cost functions used to derive mathematical model should be valid for the locality of use. 2) Values of variable such as interest rate, useful life of equipment, salvage value, and head loss equation coefficient should be properly selected. 3) In the case of pumping of fluids other than water, appropriate head loss equation viscosity and density values should be taken. In designing a pumping system under a growing demand, it has been found to be economical to have a phased installation of the system when the inflation factor is less than one.

河川의 水質·汚濁負荷量에 關한 硏究 : 公山 Dam을 對象으로 the basin of Gong San Dam

朴魯參 慶北工業專門大學 1981 論文集 Vol.18 No.-

It may be polluted the water sources by the populations, Carousers, manure and agricultural chemicals in the Gong San Dam. In this paper, the author, investigated the pollutant units and flow rates of various pollutant sources, and estimated pollutant LOad. The results are summarized as followa; 1)Mass sources, of artificial pollution are mainly a circumference of Dong wha temple and on entrance of Kwan Bong. 2) To maintans about BOD (1mg/l, average a year), it is considered that a current population is for appropriate level. 3) The rate of flow indicated BOD (24.9%), COD(84.0%), T-N(5.2%) and T-p(9.9%). The states of pollutant sources are unfalanced, for they are estimated values of a rainny years. 4) Among N,P which is control factor of eutrophication, P(52%) is derived from domestic sewage and stock breeding,N(62%) is derived from manure. 5) It is anticipated that there is a possibility of eutrophication, whether N,P Loads may be approached to or go over the standard value.

Ozone처리에 의한 上水의 ABS 제거 특성

朴魯參 慶一大學校 1993 論文集 Vol.9 No.1

In this paper, artificial samples which containe ABS of 2 mg/ℓare treated with Ozone. The experiments are performed with respect to Ozone injection rate of 0.55, 0.63, 0.75 mg/ℓ, and the samples are selected after 5, 10, 15 and 20 minutes. The results are as follows : 1. When contact time is 20 minutes, the removal effect of ABS by Ozone is 42~44% for upflow, and 94~95% for downflow. So downflow injection is prefer to upflow injection. 2. When in the ABS concentration of less than 2 mg/ℓ, Ozone 1 mg/ℓhas decomposed ABS of 1.13~1.52 mg/ℓfor upflow, and 2.55~3.42 mg/ℓ for downflow.

오존에 의한 상수의 시안 처리특성

朴魯參 慶一大學校 1995 論文集 Vol.11 No.1

The experiments of the ozone treatment are performed with artificial samples which contain cyan of 1 ㎎/ℓ in tap water. The results are as follows; 1. When the cyan concentration is 1 ㎎/ℓ, the range of ozone injection rate is 0.55 ㎎/ℓ∼0.75 ㎎/ℓ, the range of pH 9∼11 and contact time is 5 min, it is found that the removal effects of cyan by ozone is 90.3∼95.9%. 2. When ozone of 1 ㎎/ℓ has been decomposed 1.28∼1.64 ㎎/ℓ in the range of pH 9∼11.

실험수로에서의 염료추적법에 의한 유량관측기법

朴魯參,金成原 慶一大學校 1996 論文集 Vol.13 No.2

In this study, it is divided into Constant-Rate-Injuction Method and Slug-Injection Method in the Dilution Method. when it is applied in the hydraulic model flume, it is analyzied that the error variation of Constant-Rate-Injection Method is less than that of the Slug-Injection and the floodflow analysis is more exact than lowflow. as the result of error analysis, it is presented that the Constant-Rate-Injection Method is appropriate technique in the discharge measurement for the experimental flume. if it is minimized systematic and random error in the experiment process, more exact discharge is obtained in the laboratory testing. The mixing length is determined as the Schuster experimental equation in this model testing, and because the exact mixing length is affected the model discharge accuracy, it is required careful determination. Therefore, it is considered that the Dilution Method among the discharge measurement techniques can be applied for the river basin which can't use current meter or unsteady-flow regime in the urban-small drainage or hydraulic structure equipment area and so on.

지하차수벽 설치에 따른 지하수위 저하해석

朴魯參,崔倫榮 慶一大學校 1997 論文集 Vol.14 No.2

In this study, the intercept wall was presented in order to establish the plan to control stable water security effectively by the hydrological analysis and analyzing draw down of groundwater level using finite element method. The analysis of falling groundwater levels caused by the groundwater flow after 30 days in the construction site was performed. From the results of this anaysis, also the other analysis of falling groundwater levels after 30 days was performed in the case of setting up the flow interception wall with the height of 7-8meters at the upper area of the construction site. These two analyses were performed by three ways of explicit method, implicit method, and Crank-Nicolson method. In comparison of these three ways, explicit method & Crank-Nicolson method were discriminated as more proper to analyze falling groundwater levels.

灣曲管路의 水理特性 分析을 위한 數値的 解析

朴魯參,李曾錫,安勝燮 慶一大學校 1993 論文集 Vol.9 No.1

This study has been aimmed at the development of the analytical model for the hydraulic characteristics of miter bend by Finite Element Method(FEM). In this study, velocity potential function is defined such that the negative of its derivative with to distance in any direction yields the velocity in that direction. Thus all practical flow must satisfy the Laplacian equation in terms of velocity potential function. Therefore, the Finite element method for the solution of the Laplace equation is presented. The proposed analytical technique which deal with the potential flow was applied to the bend-type pipe, and which was computed velocity compotent for the finite element mesh. From results of this study, the velocity modulus for elements of corner region indicates the flow perturbation.

河川水質의 頻度分析에 관한 考察

朴魯參,張仁洙 慶一大學校 1988 論文集 Vol.4 No.1

As results of analyzing the water quality data to establish the probability function of best fit to distribution of concentration of BOD(Biochemical Oxygen Demand) and COD(Chemical Oxygen Demand) among the water quality data, it was concluded that Type-I ectremal distribution was the probability function of best fit to distribution of the concentration of BOD and COD among some other distributions such as normal distribution, lognormal distribution and Type-I extremal distribution by Kolmorov-Smirnev goodness of fit test, and frequency factor method was shown preciser than plotting position technique.

水質 Data의 統計的 硏究

咸能洙,朴魯參,李曾錫 慶北工業專門大學 1981 論文集 Vol.18 No.-

There are various item and object that used for the quality of water data but little have that used statistics for appropriately treatment. In these days, the statistics adjustment for water quality data will be understand for the subject of survey. In this paper, the authers, appliated the statistical theorem for the quality of water data of three river waters. 1. Non-exceedance probability 75% of three river waters. ─────────────────────────────────── River A River B River C River ─────────────────────────────────── Distribution BOD COD BOD COD BOD COD ─────────────────────────────────── normal Distribution 18.5 27.3 81.4 104.0 207.0 143.0 log-normal Distribution 20.0 32.0 80.5 107.0 210.0 150.0 ─────────────────────────────────── 2. The water quality data is more appropriateness than other distribution in the logarithmic normal distribution. 3. The correlation of BOD and COD in three river waters are : ─────────────────────────────────── River Correlation Correlation Coefficient ─────────────────────────────────── A-River BOD=0.249×COD+9.081 r=0.49 B-River BOD=0.825×COD-5.832 r=0.987 C-River BOD=1.125×COD+33.90 r=0.968 ───────────────────────────────────