인공호의 영양분과 엽록소 생산 예측에 관한 연구

정팔진 한국물환경학회 1985 한국물환경학회지 Vol.1 No.1

대상 인공호의 여름의 실제평균 엽록소 농도는 69.2㎍/ℓ. Secchi depth는 1.625m, 深層水酸素缺乏率은 1.476g/㎡/d 이었다. 엽록소의 예측량은 부기탄소, 총인, 총질소를 제한영양분으로 보았을 때 각각 215㎍/ℓ, 231㎍/ℓ, 874㎍/ℓ이었다. 따라서 대상이 되는 인공호에 있어서 식물성프랑크톤의 성장제한 영양분은 탄소일 가능성으로 나타났다. Vollenweider-OECD model에 봄의 유입에 봄의 유입수의 영양을 적용시킨 최적에서 여름의 엽록소농도는 20.4㎍/ℓ, Secchi depth 1.505m 심층수산소결핍율은 0.775g/㎡/d이었다. 한국의 水體에 대한 수질예측 모델을 개발하기 위해서는 넓은 범위의 신빙성 있는 자료들이 장기간동안 수집된 후에 이루어져야 할 것으로 사료된다. This investigation were carried out to find the trophic level in an artificial lake to estimate the chlorophyll-a concentration on basis of limitting factor of water qualities data on influent of Spring, comparing with the actual those of Summer season, and judge the feasibility of developed models to the artificial lake. The results obtained are as follows. Summer mean values of the artificial lake of shinhoon showed that chlorophyll-a concentration was 69.2 ㎍/ℓ, Secchi depth, 1.625m and Hypolimnetic Oxygen Depletion Rate, 1,476 g/㎡/d. If inorganic carbon, total phosphorus, and total nitrogen of Spring are individually considered as a limihing factor, the predictive values of chlorophyll-a are 215 ㎍/ℓbased on Carbon, 231 ㎍/ℓbased on total phosphorus, and 874 ㎍/ℓbased on total nitrogen. According to these values, carbon might be a limitting factor of phytoplanktion growth in an artificial lake. When the phosphorus lading of Spring in the artificial lake was applied to Vollenweider-OECD model, the values at the best fit lines showed that chlorophyll-a was 20.4 ㎍/ℓ, Secchi depth, 1.505m, and Hypolimnetic Oxygen Depletion Rate, 0.775 g/㎡/d. In order to develop the prediction model of water quality for water bodies in Korea, it is needed to collect the broad and reliable data for a long time.

타성상폐수의 주입이 하수처리효율에 미치는 영향

정팔진,곽동희,송탁식 全北大學校 附設 都市및環境硏究所 1996 都市 및 環境硏究 Vol.11 No.1

This study was to investigate the effects of dumping nightsoil, septage, and leachate to the activated sludge process receiving a mixture of sewage and industrial wastewater on its treatment performance. For the mixture of sewage and industrial wastewater, the overall removal efficiencies of BOD, COD and SS were 87.6%, 74.5% and 94.0% respectively. When the nightsoil and septage were dumped into the plant, the scum and foaming problems occurred at each stage of treatment unit. Direct dumping of the septage also induced the DO deficiencies in the aeration tanks, which resulted in a deflocculation problem in the secondary clarifiers. It may be favorite to pretreat it at the nightsoil treatment plant. When the leachate was dumped into the plant, the effluent qualities were highly fluctuating probably due to the presence of the toxic and inhibitory substances in it. It might be necessary to pretreat the raw leachate at the landfill site prior to dumping it into the plant.

음용수중 다환방향족탄화수소류의 함유량에 관한 연구

丁八鎭,朴鎬珣 全北大學校 附設 都市및環境硏究所 1994 都市 및 環境硏究 Vol.9 No.1

With the industrial development in different parts there grows the number of various micro-organic pollution substances that are melted in drinking water and thee is a possibility that their concentration density will get thicker year after, s a result they will seem to exert a vicious effect on our health. Recently 37 substances such as Trihalomethane are in our country controlled by the quality standard of drinking water but our circumstance is poor in reality compared with major advanced countries. WHO reported that PAHs caused cancer and mutation, and urges that to supply sound drinking water the density of PAHs should be 0.2 ㎍/ℓ (200 ng/ℓ) and that of Benzo(a)pyrene 0.01 ㎍/ℓ (100 ng/ℓ). This is tried to study 16 substances such as PAHs that has not guideline in our country and 16 items including Benzo(a)pyrene that EPA treats as priority pollutants. The raw water, treated water and tap water were sampled five times, October 1993 through April 1994 in the six water treatment plants in the Chonju, Iri, and Kunsan districts. This study employs the EPA Method 525-1 liquid-solids extraction and the analysis method of GC/FID. As a result, such materials as Naphthalene, Acenaphthene, Flurone and Phenathrene were not detected. Fluoranthene was detected as the most concentrated. The ccncentration of PAHs and Benzo(a)pyrene is apt to decrease in the order of raw water, treated water and tap water. Especially the average concentration of tap water of PAHs was detected as 2.14 ng/ℓ and Benzo(a)pyrene 0.33 ng/ℓ. Their concentration density stands in great scale below the guideline that WHO allowed.

용담댐 유역 영양염의 연중, 계절적 변화 및 지역적 분포

정팔진,김민정,권지영 全北大學校 附設 都市및環境硏究所 1997 都市 및 環境硏究 Vol.12 No.1

The water quality criteria of the Yongdam basin is polluted over second grade. Trophic state in the area indicate supper eutrophic state. This study was conducted to analyze the distribution characteristics of the nutrient, and to find the interrelationships among them, focusing upon the eutrophication in the Yongdam dam basin. The results of this study were as follows; 1. Nutrients was estimated as total nitrogen of 1.021∼1,034㎎/ℓ. 2. The trophic state was supper entrophic, and the state of DO level was supersaturation in spite of high organic loads from the each tributary. 3. The limiting factor of the reservoir is T-P, according to the criteria of eutrophication. 4. After Dam construction, T-P concentration of 26㎎/㎥ and Korea Trophic State Index of 50 were predicted.

Aik Sang Busik System내의 종속영양세균의 분포 및 특성에 관한 연구

정팔진,김성진,김민정 全北大學校 附設 都市및環境硏究所 1997 都市 및 環境硏究 Vol.12 No.1

Aik Sang Busik System(ASBS) was developmented in Japan. In currently, this system is operating at many night soil treatment plants in our country. The purpose of this study is to exame the effects of heterotrophic bacteria on the aeration basin of this system to remove organic compounds. As a result of tests, isolated heterotrophic bacteria are about 115 genes. The predominant gene is Acaligenus spp which about 32 percent of isolated genes. Because the floc foming bacteria of isolated heterotrophic bacteria are about 54 percent, a major removal mechanism for organic compounds in this system depends on the floc foming bacteria. The total amount of hetrotrophic bacteria is 2.32×10 exp (7) c.f.u/㎖, which is a little lower than that in the activated sludge system. As liquid degradable heterotrophic bacteria are 1.57×10 exp (7) c.f.u/㎖, carbohydrate degradable heterotrophic bacteria are 1.22×10 exp (7) c.f.u/㎖10^7, protein degradable heterotrophic bactera are 1.48×10 exp (7) c.f.u/㎖, The distribution of liquid, protein, carbohydrate degradable heterotrophic bacteria are similar to that of the sludge system.

소규모 마을오수 수거처리 사업의 타당성조사

정팔진,김민정,조한원,이은주 대한환경공학회 2005 대한환경공학회 학술발표논문집 Vol.2005 No.12

1인 1일 수질오염물 배출량에 관한 연구

정팔진 中央醫學社 1978 中央醫學 Vol.35 No.4

2000 년도 공동춘계 학술발표회 / 폐수처리 : 이온화가스를 이용한 축산폐수처리

정팔진,조선영,류재웅 대한상하수도학회 2000 공동춘계 학술발표회 논문집 Vol.2000 No.-

이온화가스와 활성탄을 이용한 휴믹산 처리에 관한 연구

정팔진,이은주,김민정,조선영,Chung, Paul-Gene,Lee, Eun-Ju,Kim, Min-Jeong,Cho, Sun-Young 한국물환경학회 2004 한국물환경학회지 Vol.32 No.2

Laboratory studies were carried out to find out the characteristics of humic acid treatment by activated carbon and ionized gas, In order to increase oxidation power of ionized gas for treating organic matter, we used granular activated carbon. By using $UV_{254}$, easy analysis method, we calculated humic acid concentration and $SCOD_{cr}$ concentration. For an initial concentration of humic acid, 10, 50 and 100ppm, the reaction rate constant by $UV_{254}$ was $8.98{\times}10^{-3}$/min, $5.62{\times}10^{-3}$/min and $4.8{\times}10^{-3}$/min respectively due to the same flow rate of ionized gas. When we added activated carbon to the ionized gas for humic acid treatment, the reaction rate constant increased in 4.13, 3.65 and 3.15 times. So, by using activated carbon in treating humic acid by ionized gas, oxidation power of organic matter by ionized gas was increased. The hydrophobic fraction constitutes 98% of organic matter for humic acid at the beginning. After the treatment using ionized gas for humic acid, the hydrophobic fraction decreased by 63~65% and the hydrophilic one increased by 35~37%. So, it was proved that the treatment increased the hydrophilic fraction in organic matter.

이온화가스에 의한 축산폐수 처리 특성에 관한 연구

정팔진,이은주,김민정,Chung, Paul-Gene,Lee, Eun-Ju,Kim, Min-Jeong 한국물환경학회 2004 한국물환경학회지 Vol.32 No.2

This paper was studied about the characteristics of treatment by ionized gas for livestock wastewater, aiming at the effects of ionized gas on organic matter, hydrophobic and hydrophilic organic matter in livestock wastewater when the new process of advanced oxidation process was applied for meeting the improved the quality of effluent. The organic matter within treated livestock wastewater by ionized gas was partially mineralized according to the time increasement. The $TCOD_{Mn}$ in the livestock wastewater was decreased from 840mg/L to 340mg/L when treated by ionized gas by the enhancement of time. We occupied the equations of $TCOD_{Cr}$, $SCOD_{Cr}$, $TCOD_{Mn}$ and $SCOD_{Mn}$ as to ionized gas treated time. As $TCOD_{Mn}$ increasing ionized gas treated time, the concentration did not meet the water quality, $COD_{Mn}$ 4Omg/L. So, for removing of the remaining organic matter in the efflent after ionized gas, following process is necessary. After treating the livestock wastewater by ionized gas, coagulation was considerable for organic matter removal up to regulation water quality. From UV scans of the treated livestock wastewater by ionized gas, the wastewater has low aromaticity and good colour.