PACT 公法에 의한 페놀含有 廢水의 處理

姜善泰 대구산업정보대학 1996 논문집 Vol.10 No.2

Using phenol-degrading strain isolated from the natural world, Phenol biodegradability and reaction characteristics according to hydraulic retention time by PACT process which were inspected. Langmuir adsorption isotherm were revealed reliability of 99.3 % by adsorption experiment, and than, adsorption constants were obtained as 1/a=-0.505 and 1/ab=1123.84, respective-ly. When activated carbon added to medium, phenol removal efficiency was 66.4 % after 20 hours of batch culture, but it was revealed as 100 %, in case of admitting activated carbon of 500 mg/ℓ. At continuous PACT process, effluent phenol concentration was lower than 1 mg/I at hydraulic retention time, 15 hours, but phenol and COD concentration was rapidly increased at hydraulic retention time to 8 hours, biomass concentration was decreased and occured to "Wash out" phenomenon.

好氣性 消化法의 有機物 除去機構에 미치는 消化溫度의 影響에 관한 動力學的 然究

姜善泰 대구산업정보대학 1987 논문집 Vol.1 No.-

The principal objective of this investigation was to study the effects of temperature on organic matter removal in aerobic digestion. Chemostat-type bench-scale experimental reactors were used in this study. Digestion times were 6.7,10,15,20 and 30 days. Digestion temperature were 5℃, 10℃, 15℃, 20℃, 25℃, 30℃, 35℃. The following conclusions can be drawn from the experimental results. At temperatures ranging from 10℃ to 35℃, the digestion time longer than 15 days is needed to obtain the high substrate removal efficiency, while at a temperature of 5℃, the digestion time longer than 20 days is needed. The rate of sludge production from utilized BOD_(5) decreases as digestion temperature and time increase. This rate is rather small than that of conventional activated sludge. However, the amount of refractory organic compounds prodused in endogenous respiration markedly increases as digestion temperature and time increase.

염색공장 폐수중 PVA 분해세균의 분리 및 생물학적 처리효과

강선태,서승교,권오억 한국환경보건학회 1990 한국환경보건학회지 Vol.16 No.1

As a research for treatment of waste water by biological method, we investigated general characteristics of waste water and isolated some useful bacteria which effectively treated waste water. Compositions of waste water were analyzed to give COD 2060 ppm, PVA 560 ppm, T-N 50 ppm, T-P 3.3 ppm and PH 12. Also, we inverstigated optimum nutrients requirement and growth conditions by mixed culture as well as the effect of coagulants. The COD removal rate reached maximum state for 48 hrs culture at pH 7.0 and 30$^{\circ}$C. Alum as the coagulated was the most effective. The COD removal rate was also increased by supplementing 10 ppm phosphorous sources as additional nutrients. The COD of waste water was reduced to 10% of its initial value by the continuous culture. As a result of overall experiments the COD of effluents became about 100 ppm and final pH 7.

유리 纖維 Filter에 의한 粉塵의 分離 效率

姜錫浩,姜善泰 영남대학교 공업기술연구소 1985 연구보고 Vol.13 No.2

The separation efficiency curve of the sand dust in the fibrous air filter was estimated from the particle size data of the sample dust measured by means of the optical microscope. The estimated separation curve was affected by the number of the experimental runs, and by the counted number of the particle images on the microscopic photograghs taken for each experimental run. But, the dust collection and the particle size data measured were not so reproducible that the separation efficiency curves determined were very widely scattered from their mean values.

下水處理場의 效率的인 管理를 위한 基礎的 硏究

姜善泰,徐承敎,李南勳 대구산업정보대학 1989 논문집 Vol.3 No.-

The main purposes of this study are to analyse the characteristics of effluent water qualities BOD, COD, SS and ES-by types of sewer system and season for treatment plants in separate sewer system and combined sewer system, and to identify the variables which exert great influences on them run in a standard activated sludge process. The characteristice of effluent water qualities by types of sewer system ad season were analysed by t-test which tests the difference in subpopulation means of 2groups, and by correlation analysis. The results thereof could be obtained as follows; (1) While there was no difference by types of sewer system in COD, there were much differences in BOD, SS, ES. (2) While BOD, SS, and ES were influenced by season in separate sewer system, in combined sewer system, BOD presented difference just between autumn and winter SS between spring and summer, spring and autumn, summer and winter, autumn and winter, and ES did not show any difference save spring.

Phenol함유 폐수의 처리에서 분말 활성탄 첨가의 영향

강선태,김정목 한국환경보건학회 1996 한국환경보건학회지 Vol.22 No.3

This study investigated performance of the phenol degradation and reaction characteristics according to variation of phenol volumetric loading rates and dilution rates in suspension and PACT reactors using Pseudomonas sp. B3. 1. Removal efficiencies of the PAC unit indicated about 100 % with phenol volumetric loading rates from 0.4 phenol $kg/ma^3\cdot d$ to 1.2 phenol $kg/m^3\cdot d$, however, which of the suspension reactor showed about 100% with from 0.2 phenol $kg/m^3\cdot d$ to 0.75 phenol $kg/ma^3\cdot day$. 2. The cell density slightly was decreased from 298.2 mg/l to 272 mg/l, when dilution rate for suspension was reactor increased from 0.4 to 1.41 1/d, and also the cell density suddenly was decreased to 145.5 mg/l and was washed out at the dilution rate higher than 1.60 1/d. But the cell density for the PAC unit was linearly decreased with dilution rate of from 0.8 to 3.0 1/d, and showed 220.75 mg/l at maximum dilution rate. 3. The phenol utilization rate was increased from 0.008 to 0.031 phenol g/l$\cdot$h, when dilution rate for suspension reactor was increased from 0.4 to 1.5 1/d, however, the rate for the PAC unit was linearly increased from 0.017 to 0.061 phenol g/l$\cdot$h as variation changes from 0.017 to 0.061 phenol g/l$\cdot$h dilution rate.

浮遊粉塵의 集塵效率에 관한 硏究

姜善泰 대구산업정보대학 1997 논문집 Vol.11 No.2

The collection efficiency of the dust particles suspended in the air were determind by use of various fabric filters. The experimental conditions are as follows ; The inlet air velocity 5.8 to 9.8m/sec, the particle size 1.32 to 195.0μm, the fiber diameter of filter 12.5 to 35.2μm. The following conclusions are deduced as follows : 1. The dust collection efficiency decreases as the air velocities increase and fiber diameter increase, but it increase as a dust particle diameter increase. 2. The collection efficiency obatained in the experiment was compared with the collection efficiency estimated thoretically by considering the impaction, the interception and the diffusion. The theoretical estimation by impaction and interception a certain range can be applied but not in the experimental condition.

BAG-FILTER 에 의한 석회석먼지의 집진효율

강선태,전승근 한국위생과학회 1997 한국위생과학회지 Vol.3 No.1

A bag filter assembly was newly constructed and tested for its operating characteristics and dust-collection efficiency by using the limestone dust particles. The test results observed in the assembly are summarized as follows 1. The collection yields of the newly estabished bag filter have continuously increased with theelapsing time of operatinn, and reached to about 99% after 20 hours of operatinn, during which the pressure drops at the respective test sections of the dust generator, the bag filter, and the check filter have shown constant values about 3∼4mm H₂O. 2. The particle size distribution of the limestone powder used in the experiments ranges from 2 to 55 ㎛, which were measured by the image analyser. The average particle size of the dust collected in the bag filter was about 13∼18㎛ and those collected in the check filter were about 4.5∼4.8㎛

凝集工程에 의한 染色廢水處理

姜善泰,徐承敎,權五億 대구산업정보대학 1990 논문집 Vol.4 No.-

This study was performed determine optimum condition for the coagulation treatment process in dye wastewater. The results are summarized as follow; 1. The effective pH for dye wastewater treatment using Al₂(SO₄)₃, FeC1₃, FeSO₄ in coagulation process were 6.0, 5.0, 10.0, respectively. 2. The optimum dosage for dye wastewater treatment using Al₂(SO₄)₃, FeC1₃, FeSO₄ in coagulation process were 800㎎/ℓ, 700㎎/ℓ, 700㎎/ℓ, respectively.

노의 (怒) 병리에 관한 문헌적 고찰 (1)

강선태,안규석 대구한의대학교 제한동의학술원 1984 東西醫學 Vol.9 No.2

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