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稻森悠平,小沼和博,水落元之,西村修 제주대학교 환경연구소 1996 환경연구논문집 : 제주대 Vol.4 No.-
Treatment of domestic and industrial wastewater and purification of polluted groundwater and lake water are very important for conservation of sound water environment. Biological treatment processes are widely used for wastewater treatment and natural water body purification, because most of the pollutants contained in wastewaters are degraded or assimilated by microorganisms. Nowadays, the technologies of mass cultivation of effective microorganisms and their introduction to waste water treatment system have been developed. The present report concerns the current situation and developing tendency of these biotechnologies. The importance of the application of effective microorganisms is also described.
생활 오수의 간헐포기 처리시설에 관한 저부하 운전에서 질소 제거특성
도森悠平,中島渟 慶星大學校 環境問題硏究所 1997 環境硏報 Vol.7 No.1
The water quality before and the secondary treatment in domestic wastewater treatment facilities in Chiba prefecture Japan were surveyed. T-N removal performance was high in the plants operated in intermittent aeration mode as compared with those operated in continuous aeration mode because of occurrence of biological denitrification in their process. The performance of T-N removal was low in the facilities of which influent BOD concentration was low even though it was operated in intermittent aeration mode. The decease of BOD was observed in equalization tanks in the facilities of resort condominiums of which influent BOD load was extremely low. The mean value of influent BOD/T-N ratio in such facilites was below 2. That caused lack of proton donor resulting in difficulty in progress of denirification while nitrification was advanced sufficiently. The relation between influent BOD/T-N ratio and T-N removal in surveyed 37 facilities suggested that the maximum T-N removal for a certain value of BOD/t-N ratio smaller than 4 decreased by the equation approximately: R =20x(BOD/T-N)+10, where R is the maximum T-N removal(%). This equation can be applied to estimate the amounts of proton donor to be added in facilities of which influent BOD/T-N ratio is low.
Cadmium 함유수가 Microcosm 내의 개체군 동태에 미치는 영향
위인선,이종빈,수등융일 (須藤隆一),도삼유평 (稻森悠平),조경,나명석,위성욱 ( In Sun Wui,Jong Bin Lee,Ryuichi Sudo,Yuhei Inamori,Kyung Cho,Myung Seok Na,Seong Uk Wui ) 한국환경생물학회 1997 환경생물 : 환경생물학회지 Vol.15 No.2
This study was conducted to provide environmental assessment method to the effect of chemical using aquatic model ecosystem. Microcosm is one of the culture system containing three species bioorganism, Chlorella vulgaris as a producer, Cyclidium glaucoma as a consumer, Psendomonas putida as a decomposer. This system is very simple, stable small-size ecosystem and shows high reproductivity and reflectivity to the natural ecosystem. It is purposed for evaluating 1) analysis method of population fluctuation, 2) culture condition, based on characteristics of individual species that selected from natural water. In order to investigate what variation bring out in the system after addition of cadmium in the culture system, population fluctuation was analyzed. When each species cultured in microcosm containig cadmium, it began to be affected by Cd 50 ㎎/ℓ Chlorella vulgaris, 0.5 ㎎/ℓ Cyclidium glaucoma, 5.0 ㎎/ℓ Pseudomonas putida in early time of culture.
Microcystis ( Cyanobacteria ) 분리주에서의 Microcystin 생산에 관한 연구
박혜경,진익렬,류홍일,류재근,도삼유평 (稻森悠平) ( Hae Kyung Park,Ing Nyol Jin,Hong Il Rhu,Jae Keun Ryu,Yuhei Inamori ) 한국물환경학회 1996 한국물환경학회지 Vol.12 No.1
Microcystis strains were isolated from water-blooms that had been collected from Korean lakes and reservoirs and cultured under uni-algal, non-axenic condition. Late exponential phase cells were harvested, concentrated and lyophilized for toxin extraction. Isolation, purification and qualitative and quantitative characterization of toxins were carried out by High Performance Liquid Chromatography(HPLC) system. Among 16 tested Microcystis strains, 14 strains produced hepatotoxic heptapeptide microcystins. The amounts and types of toxins were different according to strains. The identified toxins were microcystin-RR, -LR and YR.
위성욱,稻森悠平,조경,나명석,이종빈 한국환경생물학회 2002 환경생물 : 환경생물학회지 Vol.20 No.3
생태계를 평가하기 위한 평가법으로 주로 사용되는 이화학적 측정 평가법은 객관적인 측정치를 제시하는데 는 용이하다. 그러나 단지 측정치의 단순한 평균이나 최고치 만으로는 타 인자와의 복합 효과 또는 지속 시간에 의한 가중 효과 때문에 실상을 나타낼 수 없는 경우가 많다. 이에 따라 이화학적 측정치들을 객관적으로 종합하여 생태계의 상태를 파악할 필요성이 보다 중요하다. 즉 key factor나 trigger factor와 같은 생물체의 내성과 관련이 있는 인자들로 종이나 생태계의 조절 기구와의 관계를 평가해야 한다. 또한 생물을 이용하여 생태계를 평가하는 방법으로 지표종을 이용한 평가방법이 있으나 오염원에 대한 누적 효과나 종합적인 평가를 판단하는데는 한계성이 있다. 따라서 생태계를 하나의 단위로 하는 평가 방법이 필요하다. 이에 따라 본 실험은 생산자, 분해자, 소비자로 구성된 microcosm 이용하여 대표적인 산업폐수인 도금공장 폐수에 대한 독성을 평가하였다. 그 결과 도금 폐수의 이화학적 성상은 크롬 2,234.8mgl^-1,구리 3.1mgl^-1,아연 521.3mgl^-1로 크롬이 다량 함유되어 있었으며, 시안은 42.9mgl^-1이었다. 도금 폐수를 농도별로 microcosm 내에 첨가한 후 각 개체군들의 동태 변화를 조사한 결과 Ch. uulgaris는 모든 처리구에서 대조구보다 감소하는 경향을 나타내었고, P putida는 대조구에 비해 증가하였으며, C.gloucoma는 농도가 증가함에 따라 개체수가 감소하기 시작하였으며, 2.5% 이상의 처리구에서는 모든 개체수가 사멸하였다. 본 연구 결과 제어된 생물환경 조건하에서 구성된 microcosm이 실험 재현성이 비교적 우수하고, 안정된 미소 생태계를 유지할 수 있어 산업 폐수 및 오폐수에 대한 새로운 독성평가 방법으로 적용이 가능할 것으로 본다. This research investigated experimentally on the population growth in the aquatic microcosm with the wastewater of plating factory. The purpose of this study was to evaluate the effect of culture conditions of the characteristic growth pattern of the examined species. Population of the system is consists of three organisms; Chlorella vulgaris as a producer, Cyclidium glaucoma as a consumer and Pseudomonas putida as a decomposer. The different growth patterns of each popultaion are followed by surfactant type; Especially C. glaucoma was sensitive, Ch. vulgaris was maintained population size stably even at high level of surfactant and P. putida was not significantly affected. After treatment of waste water from plating factory, it began to be affected at 1.0% solution treatment to Ch. vulgaris which the cell number was decreased prominently after 2 days, and C. glaucoma was disappeared at 2.5% solution treatment. P. putida was showed increasing pattern according to treatment concentration, at 2.5% solution and population size grew double. The result from current microcosm study indicates that this model system can be applied to environmental assessment method for various pollutants.
SLS ( Sodium Lauryl Sulfate ) 가 Microcosm 내의 개체군 동태에 미치는 영향
위인선(In Sun Wui),이종빈(Jong Bin Lee),수등융일,도삼유평,조경(Kyung Cho),나명석(Myung Suk Ra),위성욱(Seong Uk Wui) 한국환경생물학회 1998 환경생물 : 환경생물학회지 Vol.16 No.3
We investigated each individual movement in the microcosm when synthetic detergent, SLS (sodium lauryl sulfate), was inflowed in the system. The microcosm is one of a small model ecosystem containing biotic species which selected from natural aquatic ecosystem and maintaining as culture system under controlled condition. As a result of inflowing SLS in the system 14 days after subculture (stabilizing stage), individuals of producer Chlorella vulgaris and decomposer Pseudomonas putida were stable at 10.0㎎/ℓ SLS. But, consumer Cyclidium glaucoma was begun to affect at 2.5 ㎎/ℓ SLS and this individual was disappeared in the system at 5.0 ㎎/ℓ SLS. This study was purposed for suggestion to one of environmental assessment method by using model system as investigation of individual movement in the microcosm after treating detergent, one of a aquatic pollutant.