광주시에서의 산성강하물에 관한 연구 ( A Study on Acid Precipitation in Kwangju )

신대윤,조선희,임철수,김구열,정하영,강공언 한국대기환경학회 1992 한국대기환경학회 학술대회논문집 Vol.- No.-

정수장 침전지 유출수의 규조토 여과에 관한 연구

신대윤,지성남,문옥란,김지영,서동우,조영관,Shin Dae-Yewn,Ji Sung-Nam,Moon Ok-Ran,Kim Ji-Yeong,Suh Dong-Woo,Cho Young-Kwan 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.5

The objective of this investigation was to evaluate applicability of precoat filtration that can be substituted for rapid sand filter of conventional water treatment system(CWTS). Precoat filter used in this experiment are candle filter. Element disk of candle are pore size $10{\mu}m(R),\;20{\mu}m(B)$ And diatomaceous earth are cake pore size $3.5{\mu}m$(Standard Super- Cel; A), $7{\mu}m$(Hyflo Super-Cel; B) and $17{\mu}m$(Celite 545RV; C). $2kg/m^2$ diatomaceous earth is used for precoating, it coated candle in $5{\sim}6mm$ thickness. 1. Al adsorption dosages by diatomaceous earth used in experimental we Hyflo Super-Cel 0.843mg/g, Standard Super-Cel 0.782 mg/g and Celite 545RV 0.766 mg/g. 2. Filtrate of precoat filter during 60min are R-C combination 20.7($m^3/m^2$)>B-C 18.3($m^3/m^2$)>B-B 15.0($m^3/m^2$)> R-B 12.9($m^3/m^2$)> R-A 11,093($l/m^2$). 3. Water quality of precoat filter effluent are thus. $KMnO_4$ consumption are $1.10{\sim}2.20mg/l$, removal rate are $30.9{\sim}65.6\%$. They are R-A 1.10(mg/l)(removal rate $65.6\%$). R-C(2.20 mg/l)(removal rate $30.9\%$). 4. $Al^{3+}$ are not detected with all combination, removal rate $100\%$. 5. Considering water quality and flux, continued running time of R-A combination is 7 hr. Accumulated filtrate are $74.4 m^3/m^2$, average flux is $177.2 l/m^2{\cdot}min$. And filtrate per diatomaceous earth 1g are 37.2 l. 6. R-A effluent's water quality are $KMnO_4$ Consumption 1.10(mg/l), DOC 1.161 mg/1, Al 0.0 mg/1, $UV_{254}$ 0.016/cm, Turbidity 0.1(NTU). R-A combination is suitable to precoat filtration for the settling basin effluent treatment.

GPS 전파엄폐 탐측자료의 우주기상 활용방안

신대윤,디네시마난다르,이정덕,이종혁,이양원,김해연 통신위성ㆍ우주산업연구회 2013 한국위성정보통신학회논문지 Vol.8 No.1

GPS 전파엄폐는 GPS 전파가 대기에 의해 굴절 및 지연되는 현상에 기초하여 대기의 물리적 특성을 관측하기 위한 원격탐사 기법이 다. 2006년 미국과 대만이 공동 개발한 FORMOSAT-3/COSMIC 위성은 하루 2500여건의 전파엄폐 자료를 준실시간으로 제공하고 있으며, 우리나라의 다목적실용위성 5호의 AOPOD(Atmosphere Occultation and Precision Orbit Determination) 시스템은 이중주파 수 GPS 수신기 및 전파엄폐 자료수신용 안테나를 장착함으로써 전파엄폐 자료의 획득이 가능하도록 설계되어 대류권과 전리층 연구에 활용될 것으로 기대되고 있다. 본 연구에서는 GPS 전파엄폐의 신호처리와 지오메트리 분석기법을 검토하고, 대류권 온습도 와 전리층 전자밀도 및 신틸레이션(scintillation) 산출기법을 분석하며, 이러한 전자엄폐 탐측자료를 활용하기 위한 방안으로서 전리 층 총전자수 변화를 통한 지진감시와 효율적인 자료서비스를 위한 오픈 API(application programming interface) 구축에 대해 검토 하고자 한다.

축산페수처리를 위한 탈수기와 침전조 개발에 관한 연구

신대윤,최현규 조선대학교 환경공해연구소 1998 環境公害硏究 Vol.14 No.-

Centrifugal filter and filtration type sedimentation tank are built to investigate their capacity and the optimal condition to treat swine wastewater physical-mechamically. 1. As the result of the separation and the experiment of sludge which is over 0.2??of the diameter of the particles, in 180rpm of the rotation speed and 50 ??min of filtration velocity of centrifugal filter, 1.3-4.7kg of sludge, 60-70% of hydration rot per 1m^(3) of filtrates, was removed. 2. Removal rate of SS of filtrates through filtration type sedimentation tank was more than 90%, and BOD and COD more than 50% when filtrate had been kept for 6 months in air-tight container, it generated a little gas and little precipitation.

접촉산화법에 의한 소각로 배출폐액의 처리에 관한 연구

신대윤,서동우 한국환경보건학회 2000 한국환경보건학회지 Vol.26 No.3

The treatment of the washout from small scale incinerator was performed physically, chemically and biologically. The results are as follows. 1. SS, FS removal efficiency of washout wastewater from incinerator was 67.4%, 37.4%, while SS, FS of sewage wastewater was removed 63.2% 35.4% respectively. 2. The optimal conditions for chemical coagulation turned out to be pH 7.5, alum(Al2O3 10%) 30ml/ι and polyelectrolyte(A-601P 0.1%) 4ml/ι. SS 86%, FS 89.5%, BOD 42.5% and CODMn, 63.5% was removed and the removal efficiency of some metals are shown as Pb 93.5%, Zn 86.5% and Fe 80.6%. The concentration of the effluent was SS 9mg/ι, BOD 98.4mg/ι, and CODMn 138.4mg/ι. 3. The removal efficiency in treating washout wastewater of incinerator through HBC-briquet media was getting higher with increasing HRT, and mixed wastewater with 1:1, 1:2 ratio could be met up to the standard limit with higher HRT than 12hr. Under the condition of 1:2 mix ratio and HRT 24 hr, removal efficiency of SS, BOD, CODMn, T-N and T-P was 92.1%, 90%, 87%, 48.2% and 48%, respectively, and the concentration of treated wastewater was SS 2.9 mg/ι, BOD 10.3mg/ι, CODMn 14.1mg/ι, T-N 11.6 mg/ι and T-P 1.3 mg/ι, respectively.

딸기통조림 工業廢水의 生物學的 處理에 관한 硏究

신대윤,정연자 조선대학교 환경공해연구소 1998 環境公害硏究 Vol.14 No.-

The purpose of this study is grouping the method of canning process factory for various wastewater. The result of this study, batch anaerobic process and continuous anaerobic-aerobic contact oxidation process treated of strawberry raw material cleaning wastewater, can be summarized as follows: The pH decreased until 18hr in reaction time under volatile acid generation and reached to 7.1 sequently for high and low reaction temperature respectively Batch anaerobic process of high temperature and mesophilic temperature COD removal rate was 56-78% and SS removal rate was 19.7%. The highest removal rate was obtained with reaction time for high-temperature and mesophilic temperature. From the comparing HBC with HBC-PET bottle as a media of continuous anaerobic-aerobic contact oxidation process, COD removal rate was a little higher than BOD and SS. Continuous anaerobic-aerobic contact oxidation process preserved temperature and loading change stably and process was very efficiency, in spite of short retention.

無等山 一帶 藥水의 水質에 關한 硏究

申大允 조선대학교 생산기술연구소 1987 生産技術硏究 Vol.9 No.2

In order to investigate the actual condition for water pollution and provide the basic data necessary for water quality control, physico-chemical and bacteriological study on the water pollution of 16 mineral wells and 2 mountain wells around Moodeung mountain where is joined to Kwang ju city, Hwasoon-Kun and Tarmyang-Kun, Chun Nam Province was carried out during the period from June to August in 1987. The results obtained were as follows: 1) Water temperature ranged from 9℃ to 19.5℃ and pH ranged from 5.8 to 8.0. 2) Free ammonia and nitrogen nitrite were not detected, and the amount of KMnO₄, consumed ranged from 12.4ppm to 14.6ppm only at Dae Phi So Mt. Well. This value exceeded criteria, 10ppm. 3) The most probable number(MPN) of coliform group was 33.3% at 1.0~50/1001ml, 16.7% at 50~120/100ml, respectively and the degree of nondetection was 50%. Also, the MPN of fecal coliform was 0~44/100ml, and MPN of coliform group and fecal coliform group mostly showed higher value in August than in June. 4) The composition of coliform group by IMViC reaction was 15.71% Escherichia coli-group, 5.71% Cltrobactor freundii group, 54.29% Klebsiella aerogenes group, 10% the rest, respectively. 5) General bacteria ranged from 5 to 10,500/ml, and about 44% of all Samples was over the standard limit in standard plate count.

燒却爐 洗淨集塵機의 排出水 處理

신대윤,홍완해,김형곤 조선대학교 환경공해연구소 1999 環境公害硏究 Vol.15 No.2

This study has some useful information about washout water from the small scale incinerator, installed in Chosun university. The results are as follows; 1. The concentration of SS has 65.2㎎/ℓ after being screened by micro strainer. 2. Alum(10% as Al_(2)O_(3) : 3㎖/ℓA-601P 4㎖/ℓ was added in pH 7.5 for coagulating screened washout water. The removal rate after carrying chemical coagulation turned out to be 85.8% in SS, 45.4% in CODMn, 64.5% in BOD with concentration 9.1㎎/ℓ ,93.5㎎/ℓ and 134.8㎎/ℓ respectively. Some heavy metals were also analysed and their removal efficiency was higher than expected as below : Pb, Zn, and Fe was determined as 0.76㎎/ℓ , l.06㎎/ℓ, 2.63㎎/ℓ with removal rate of 93.7%, 86.6% and 80.6% in each item, respectively. 3. The optimum HRT for sample which is mixed with coagulated washout water and screened sewage wastewater on HBC-briquet ash complicative media was 13.4hr. Mixed sample with different rate like 1 : 1(ratio of chemically coagulated water to sewage wastewater on a half and half bases) obtained from biomembrane reactor with 13.4hr retention time, was determined value as 35㎎/ℓ (38.6% removal rate), 28.3㎎/ℓ (81.3% removal rate) and 51.7㎎/ℓ (75.7% removal rate) with respect with SS, BOD and CODMn, respectively.

제 14 주제 : 중금속 이온 흡착 분리를 위한 킬레이트 수지의 합성과 특성에 관한 연구

신대윤,육경창,이내택 대한보건협회 1992 대한보건협회 보건종합학술대회 Vol.- No.-

침지식 한외 여과막을 이용한 무산소/혐기 교대운전형 반응조의 질소·인처리에 관한 연구

신대윤,김동임,권오상 조선대학교 환경공해연구소 2004 環境公害硏究 Vol.18 No.-

Nowadays, Water is deteriorating with several reasons such as increase of wastewater which is flowed into river and limitation of water resource. In this study, reuse water system was configurated using submerged membrane bioreactor(SMBR) system consisted of anoxic, selector, and aerobic tank with membrane to concentrate on plans for securing of water resource by reusing wastewater treatment effluen. This study was examined the feasibility of applying a Intermittently Internal Recycle Membrane Bioreactor to household wastewater treatment. The bioreactor was intermittently recycle to alternate anaerobic/anoxic condition while find was entered the early stage of anoxic period and membrane filtration occurred during aeration period. With about 5,000㎎/L of MLSS , 94.4% of TCOD_(Mn), 49.6% of T-N and 56.8% T-P, With about lO.OOO㎎/L of MLSS 94.0% of TCOD_(Mn), 51.3% T-N and 49.7% of T-P and With about lO.OOO㎎/L of MLSS (anoxic 1hr, anaerobic 2hr) 96.6% of TCOD_(Mn), 67.2% of T-N and 53.0% of T-P could be removed. Therefore, this study confirmed the possibility of the domestic water treatment using membrane bioreactor process with Intermittently internal recycle.