連續回分式 反應器에서 有機性 廢水의 分解 Phenol이 미치는 影響

朴永圭,姜信寬,李哲熙 嶺南大學校 環境問題硏究所 1985 環境硏究 Vol.5 No.2

The synthetic Wastewater mixed with the sewage and phenol was treated by the sequencing batch reactor process to investigate the effect of phenol toxidity on the biodegradation. According as the phenol concentration of the raw wastewater was increased, the rate coefficient of the substrate removal, ??, by the adsorption during the fill period and the rate coefficient of the substrate biodegradation, ??, during the aeration period were decreased for phenol toxidity, but the activated energy of the substrate biodegradation, the sludge volume index and the suspended soild concentration were increased. It was found that the removal efficiency of COD was obtained more than 90% after the aeration period below 267(mg/l) of the phenol concentration, and that the removal efficiency was remarkably decreased for the toxidity at 333(mg/l) of the phenol concentration.

多變量分析에 依한 琴湖江의 水質評價

朴永圭,李哲熙,鄭輝洙 嶺南大學校 環境問題硏究所 1986 環境硏究 Vol.6 No.1

The results of the multivaraite analysis in order to estimate water quality of the Kum-ho river were as follows: 1. The water quality of the Kum-ho river estimated by the factor scores were seasonably homogeneous throughout the period of this research. 2. The cumulative proportion includings the third principal components was ranked as high as 97.8%. 3. The first principal components except water temperature, which the factor loading of which marked over 0.9, are composed of 14 items of water quality, and it was thought to be closely related to the river pollution caused by human activities and the waste water from near by factories. 4. In the relationship between the water quality and the flow of Kum-ho river was founded that COD and the factor scores related closely to each other from the relationship. Therefore, the run-off loading rate could be explained most completely by COD(Cr) and factor scores. And the run-off loading rate of the Kum-ho river basin showed almost no variation at the lower reaches, where the pollutions were mainly contributed by the point sources.

大規模 染色工業團地 廢水處理의 活性汚泥工程 最適化

朴永圭,李哲熙,李武康 嶺南大學校 環境問題硏究所 1982 環境硏究 Vol.2 No.1

This studies provided the optimization for the design treating activated sludge process for the waste water from the large-scale dyeing industrial complex. Two processes were here used to treat the dyeing waste water, which one is treated with raw waste water directly by the activated sludge process and the other treated by the coagulation follwing with activated sludge process. Design parameters as maximum specific substrate utillization rate(??) and half velocity coefficient (??) were obtained for each process. And also discussed the optimization conitions for the design of the activated sludge process with these parameters.

염색공업단지 폐수처리장의 유입폐수 특성

박영규,이철희,양용운 嶺南大學校 環境問題硏究所 1996 環境硏究 Vol.15 No.2

요 약 문대구 D염색공단의 대표적인 염색가공업체에서 유출되는 폐수와 공단처리장에 유입되는 1 년간(1994. 1-1994. 12) 종합폐수의 수질 및 오염부하변동을 조사하였다.Polyester감량업체의 연평균 BOD 3,112㎎/ℓ , CODMn l,402㎎/ℓ이고, COD/BOD비는 0.34이 였으며, 면 T/C업체의 연평균 BOD 885㎎/ℓ, CODMn 676㎎/ℓ이고, COD/BOD비는 0.76이 였 다. (그리고 Nylon업체의 연평균 BOD 582㎎/ℓ, CODMn 376㎎/ℓ이고, COD/BOD비는 0.65 이였으며, 나염 관련업체의 COD/BOD비는 1.18이였다. )공동폐수처리장에 유입되는 유량의 78%가 50,000 ㎡/day∼60,000㎡/day이였으며, 연평균 수온은 35tC, pH는 11.6∼12.9 범위이고, 부유물질은 92㎎/ℓ 이였다. 공동폐수처리장에 유입 되는 연평균 BOD 및 COD Mn은 각각 1,824mg/ℓ, 760mg/ℓ이고, COD/BOD비는 0.42이였다. 연평균 BOD 및 CODMn 부하량은 각각 107,616kg/day, 45,O17kg/day이고, 이중 부하량 분포 에서 BOD는 80,000∼90,000kg/day 범위가 약 31 %, CODMn은 45,000∼50,000 kg/day 범위가 약 63%로 가장 많은 빈포를 차지하였다. 전체적으로 BOD 부하량는 60,000∼110,000kg/ day 분포가 약 81 %, CODMn 부하량은 40,000∼55,000 kg/day 분포가 약 92%이 였다. Abstract The wastewater discharged from several major dyeing processing industries and the mixed influent wastewater in Taegu D dyeing industrial complex were investigated for a year (1994. 1 ∼ 1994. 12) in order to evaluate the fluctuation of pollutant 1oadings.Average wastewater qualities from the polyester processing were BOD 3,112 mg/ℓ and CODMn l,042 mg/ℓ and those from the cotton T/C processing were BOD 885 mg/ℓ , CODMnMn 676 mg/ℓ and COD/BOD ratios were 0.34 and 0.76, respectively. An addition, average wastewater qualities from the pylolyester processing were BOD 3,112 mg/ℓand CODMn 736 mg/ℓ and COD/BOD Fatio was 1.18 from the printing processing,Flow rate of 78 % at dyeing industrial complex wastewater treatnlent plant was found to be on the range of 50,000㎡/day∼ 60,000㎡/day and the average mixed wastewater qualities were characterized as water tempereture 35℃, pH 12.1, suspended solid 92 mg/ℓ , BOD 1,824 mg/ℓ and CODMn 760 ㎎/ℓ.Average BOD and CODMn loadings were l07,616 kg/day,45,017 kg/day, respectively. About 31% of daily BOD loadings fell on the range of 80,000∼90,000 kg/day and about 63% COD Mn 1oadings did on the range of 45,000∼ 50,000 kg/day, which showed the most frequent range. And about 81 % of total BOD loading was found from 60,000 to 110,000 kg/day and about 92% of total CODMn loading ranged from 40,000 to 55,000 kg/day.

上水處理에서 HCO₃濃度가 凝集效果에 미치는 影響에 關하여

朴永圭,李哲熙,曺秉樂,朴勝吉 嶺南大學校 環境問題硏究所 1982 環境硏究 Vol.2 No.1

In this paper is presented the effect of ?? concentration on the efficiency of the turbidity removal by flocculation with alum or ferric sulfate. It is confirmed that pH range of the optimal flocculation conditions for the raw water contained the initial ?? concentration of 80mg/1 is expanded to 5-8 or 4-6, res-pectively, by treating with alum and ferric sulfate as a coagulants. The residual turbidity treated water is also decreased to 2NTU with alum and to 4NUT for the case of ferric sulfate. The determined agglomeration rate constant, K₁, and erosion rate constant, K₂, for floc are as follows; coagulants agglomeration rate constant erosion rate constant (initial ?? conc.) K₁ K₂ alum(80mg/1) 0.29 0.3 ferric sulfate(40mg/1) 0.35 0.26 Here is discussed the number of the reactor for the continuous flow needed to treating below 5NTU and also discussed treated watar quality which is predicted from kinetic model by using agglomeration rate constant, K₁, and erosion rate constant, k₂.

水溶液中의 DodecyI Benzene Sulfonate의 오존 酸化

朴永圭,李哲熙,韓明鎬 영남대학교 공업기술연구소 1985 연구보고 Vol.13 No.2

This study was conducted by the method of ozone demand flask to ozonize dodecyl benzene sulfonate (DBS) which is the principal component of the synthetic detergents. The results are summarized as follow; 1. For ozonization of DBS in aqueous solution, DBS was easily oxidized increasing pH and temperature. 2. The rate constant of the reaction, k is 1.70 min??, reaction order of DBS, n is 1.40 and the reaction order of ozone, m is 1.25 in the DBS-ozone system. 3. DBS removal rate is proportional to ozone dosage. 4. The utilizaion coefficient of ozone is directly proportional to initial concentration fo DBS because the ozone demand per removed DBS is increased according to decreasing initial concentration of DBS. And the ratio of initial concentration of DBS versus utilizationcoefficient is 0.037. 5 The removal rates of DBS, Fe, and Mn by ozone were in the order of Fe, Mn, and DBS in its rate. 6. For ozonization of DBS, Fe, and Mn in mixed-aqueous solution, DBS and Fe were preferential but Mn was not preferential.

상수고도처리에서 UF-오존-생물활성탄의 처리능평가

박영규,이철희 嶺南大學校 環境問題硏究所 1997 環境硏究 Vol.16 No.2

安東댐과 公山댐의 水質과 藻類 特性 比較 硏究

朴永圭,李哲熙,韓明鎬,李榮浩 嶺南大學校 環境問題硏究所 1989 環境硏究 Vol.9 No.1

This study was conducted to investigate the water quality and algae, and to evaluate the trophic state in Lake Andong and Lake Kongsan. The results are summarised as followes; 1. The differences between maximum and minimum water temperature with the water depth were 17.4℃ and 4.5℃ respectively on September for Lake Kongsan. The differences between maximum and minimum DO saturation degree with the water depth were 61.5% on December for Lake Andong and 76.5% on September for Lake Kongsan. 2. It was founded that trophic state of Lake Andong and Lake Kongsan were mesotrophic state and eutrophic state, respectively by trophic state delineation of US EPA and Carson's trophic state index(TSI). 3. Identified phytoplanktons were 86 species, 1,361 cell/ml in Lake Andong. Among them, Diatoms accounted for 91.4% and Genus of Fragilralia which accounted for 45% was predominant. In case of Lake Kongsan, 92 species, 1,228 cell/ml were identified. Among them, Blue-greens accounted for 69.7% and predominant Genus was Anacystis which accounted for more than 50%. 4. Identified taste and order inducing phytoplankton for Lake Andong and Lake Kongsan were 49 species, 536 cell/ml and 86 species, 1,148 cell/ml, respectively. Identified filter clogging phytoplanktons for Lake Andong and Lake Kongsan were 37 species, 825 cell/ml and 7 species, 79 cell/ml, respectively.

琴湖江底質中에 含有된 銅의 汚染經路

朴永圭,李哲熙,魯明英 嶺南大學校 環境問題硏究所 1987 環境硏究 Vol.6 No.2

The study was carried out on the pathway and the trend of copper pollution of sediments in the Kumho River. It was difficult to establish the actual copper pollution level of sediment only with a data on copper contents sediment because measured values of copper fluctuated intensely even in an identical sampling station. Then the trianglar coordinate chart method was applied to compare the pictures of copper pollution among different sampling stations with several items (Cd, Cr, Zn, Pb, Mn and Fe) of the measurement. It was useful for the selection of metals in trianglar coordinate chart to check the probable distribution of metal concentration in sediments. The combination of copper, cadimum and manganese was appeared to be most excellant among fifteen combination of metals in trianglar coordinate charts for the investigation of copper pollution. The plot in the Cu-Cd-Mn trianglar coordinate chars successfully account for the pathway of copper pollution of sediments.

아세톤-물혼합용매에서 trans-[Co(en)_2Cl_2]^+ 및 trans-[Co(1,3-pn)_2Cl_2]^+ 이온의 가용매 분해 반응에 미치는 압력과 용매조성의 영향

朴裕哲,卞鍾轍,金京美,趙靈濟 慶北大學校 1984 論文集 Vol.38 No.-

The rates of solvolysis of trans-[Co(en)_2CL_2]^+ and trans- [Co(1,3-pn)_2CL_2]^+, in which en and 1,3-pn are ethylenediamine and 1,3-propylenediamine resepectively, have been investigated using conductometric and spectrophotometric methods at various pressures up to 2,000 bar in aceton-water mixture. The activation volumes obtained from the pressure effect on rate constants were small and positive values in both complexes of trans- [Co(en)_2Cl_2]^+ and trans- [Co(1,3-pn)_2CL_2]^+. These results are discussed in terms of dissociative mechanism (S_NI) for the solvolysis of both complexes. The importance of solvent composition on the reaction is further confirmed by application of a free energy cycle. It is concluded from the free energy cycle that the effect of solvation of transition state in the solvolysis of both complexes is more dominant than that of initial state. In addition to that, it is shown that the character of S_NI is further increased with increasing the content of acetone.