간접 포기식 유동상의 이상적 설계에 관한 연구

안송엽,김환홍,권희태 한국환경과학회 1999 한국환경과학회지 Vol.8 No.1

Process intensification without any increase in bed requires the exploitation of fluid mechanical phenomena as the basis for elegant solutions to the process engineering problems which result from the need to retain and control the immobilized biomass, and for biomass recovery. The fluidized bed biological reactor provides a solution to these needs. The wastewater treatment characteristics of the fluidized bed was filled with sand media. Indirect aeration were studied experimentally. The researcher was filled with sand particle size(0.60∼0.42mm) in three reactors with different section area(A)/height(H), in the state BOD loading 4.5㎏-BOD_5/㎥·d, and under the fixed state of hydraulic retention time for around 32 minutes.

間接曝氣式 流動床의 理想的 設計에 관한 硏究

안송엽,정재균 圓光大學校 環境建設硏究所 1995 環境建設論文集 Vol.4 No.-

이 논문은 호기성 미생물에 의한 유동상 반응기 형태의 변화에 따른 설계에 영향을 미치는 주요인자 간의 상호관계를 파악하기 위한 연구이었다. 실험장치는 원통형 아크릴을 이용하여 용적이 각각 8ℓ인 반응기를 4개 제작하였다. 실험은 순환유량 및 media충전량을 제외한 일반적 실험조건은 BOD부하율 4.5㎏-BOD/㎥㎡ㆍd, 반응 온도는 28±0.5℃, pH는 6.5 ∼ 7.5, 수리학적 체류시간은 32분, 폐수 주입량 및 주입농도는 0.23ℓ/min 및 100㎎/ℓ로 일정하게 유지시켰다. 실험을 통하여 얻어진 결과는 다음과 같다. 1. 각 반응기의 형태, 즉 A/H比에 관계없이 최대의 처리효율을 보이는 media 충전량은 17%로 일정하게 하였다. 2. A/H比에 따라 최대 처리율은 96%∼94%로 나타나므로, A/H比가 처리율에 영향을 준다는 것을 알 수 있었다. 3. 순환유량이 동일한 경우, 총미생물량은 A/H比가 0.185일 때에 비해 A/H比가 2.96일 때에 최대 약 3배의 보유량을 나타내므로, A/H比가 부하량 결정에 주요인자 임을 알 수 있다. 4. Bioparticles의 합체현상으로 인한 처리율의 감소를 막을 수 있는 최소유량은 A/H比 2.96 일 때에 3.7 ℓ/min, A/H比 1.6일 때에 2.8 ℓ/min, A/H比 0.316일 때에 1.2ℓ/min, A/H比 0.185 일 때에 0.9ℓ/min 정도인 것으로 나타났다.

미생물을 이용한 생물학적 제거 특성

안송엽,심순섭,박승훈,권희태 원광대학교 2001 論文集 Vol.27 No.-

Process intensification without any increase in bed requires the development of fluidized bed mechanical resource as the basis for solutions to the process biological problems which result from the need to retain and control the attachment microbe, and for microbe recovery. The Wastewater treatment characteristics of the fluidized bed was filled with sand media and indirect aeration were studied experimentally. The endogenous decay coefficient and growth rate of microbe appealed on the biofilm thickness. Sand media concentration was 18% and upflow velocity 1.32cm /sec, endogenous decay coefficient kd was 0.025d-1 and growth rate of microbe's 0.122d-1. 본 연구의 공정은 상 안에서 어떠한 인자의 증가없이 미생물의 증대를 필요로 한다. 유동상의 기계적인 원인을 보완하고 공정의 생물학적인 문제를 해결하기 위해 부착미생물의 유지시키는 것과 제거 뿐 만 아니라 미생물의 재생에 관한 결과들을 고찰하였다. 유동상의 폐수처리특성은 모래 메디아와 간접포기를 이용함으로써 실험적으로 연구되었다. 자산화계수와 미생물의 증식율은 생물막의 두께에 따라서 다르게 나타난다. 모래 메디아 충전량을 18%로, 상향유속을 1.32cm/sec로 할 경우 kd는 0.025d-1와 증식율 0.122d-1이었다. 본 유동상법은 단위 미생물량당의 미생물 증식량을 이용하여 현장조건에 맞게 조절할 수 있는 하나의 영향인자로 판단된다.

UASB 법을 이용한 도축장 폐수의 처리

안송엽,송재준,김민선 대한환경공학회 1994 대한환경공학회 학술발표논문집 Vol.1994 No.12

人工湖沼의 水質汚染과 그 對策에 關한 硏究

安松燁 圓光大學校 1980 論文集 Vol.14 No.2

The development of urban areas, advancement of industry and the excessive use of agricultural fertilizer and/or chemicals, which has now brought a great many problems by nourishing lakes and breaking the balance of an ecosystem in water. This research, through the physical, chemical and biological examination of the three lakes (Gu-I, Deog-Jin and Su-Deog) which are in the area of Jeon-Bug Province, reached the following conclusion about the water pollution of the lakes and its countermeasures. 1. Gu-I reservoir maintains the balance of an ecosystem mode of life with favorable conditions in the physical, chemical and biological circumstance. 2. Deog-Jin lake and Su-Deog lake have become not only unfit for the standard of water quality for the use of recreation but also excessive prosperity of algae because of high concentrations of phosphorous and Nitrogen compounds. Therefore the difference between dissolved oxygen and carbon dioxide during the day and night is noticeable. During the day, the shortage of carbon dioxide has caused the limited factor of primary production. The ecosystem mode of life falls in inequality by changing dissolved oxygen concentration between day and night.

석가공 폐수의 처리장치에 관한 연구

안송엽,김환홍,권희태 圓光大學校 環境建設硏究所 1998 環境建設論文集 Vol.7 No.-

On the treatment of stone-processing wastewater an achievement case study and literature cited do not exist in the world, so the study put many hours in it. The conclusions are obtained as follows: 1. At the study development treatment plant of stone-processing wastewater are indicated few power rate, easy maintenance management and highly treatment efficiency. 2. Efficiency of agitation lead to decrease in put of polymer coagulation so economical is good.

SUMT法에 의한 活性슬러지 廢水處理시스템 工程最適化에 관한 硏究

安松燁 圓光大學校 1984 論文集 Vol.18 No.2

The optimization of the wastewater treatment systems has been made by some researchers. Applying the algorithm to the optimum design of the activated sludge wastewater treatment system using modified Newton-Raphson Method by SUMT which has not been yet applied in the field of the wastewater treatment by other researchers, the results obtained in this study are as follows ; 1. The algorithm used in this study is thought to have the propriety, the stability and the applicability. 2. Comparing and analyzing the algorithm adopted in this study with Complex algorithm used by Craig et al, the optimum solution obtained by this algorithm is almost same as ones obtained by Complex algorithm throughout two iterations, and this algorithm is thought to be efficient for the optimization of the wastewater treatment systems in consideration of only the iteration number. 3. As the optimum design variables and the volumes of the unit processes vary, the process design optimization is thought to be economical.

무산소 - 호기 유동상을 이용한 영양염류 제거

안송엽,김환홍,권희태 대한환경공학회 2001 대한환경공학회 학술발표논문집 Vol.2001 No.12

석재공장 폐수의 처리에 관한 연구

안송엽 圓光大學校 環境建設硏究所 1995 環境建設論文集 Vol.4 No.-

For the efficient coagulation and sedimentation of stone processing plants wastewater this paper made such tests as physical and chemical test, Jar-Test of raw wastewater and treatment wastewater by using both various coagulants and coagulation aids. The results are obtained as follows: 1. Physical and chemical test showed that Alum treatment, inorganic coagulant was highly efficient in all ways-suspended solids treatment, Turbidity, DO, BOD, COD, etc 2. Jar-test showed that positive ionic, in case of using coagulation aid after Alum treatment, had better sedimentation removal efficiency than negative ionic, organic coagulant.

Ph가 間接曝氣式 流動床에 미치는 영향

안송엽,김환홍,정재균 圓光大學校 環境建設硏究所 1997 環境建設論文集 Vol.6 No.-

Among the effect parameters working on the operation of aerobic fluidized bed, and in order to clarify the removal the characteristics of the organic matters along the changes in the pH, the researcher filled two kinds of sand of different particle size (0.30mm-0.60mm) in two reactors with different section area(A), height(H), and in the state BOD loading 4.3kg-BOD_5/㎥ㆍd, DO, pH, Suspended solids of concentration, and under the fixed state of hydraulic retention time, for around 67 minutes. The test was conducted as follows. By fixing the value obtained from the above test as the optimal condition, and in the result of the test along the gradual modification of only pH from 2 to 12, more than 90% of removal rate of BOD_5 was shown between pH 5 and 11, while the concentration of MLSS was more than 8,000mg/ℓ; however, the results of the test under the pH 5 showed that the removal rate of BOD_5 and concentration of MLSS had rapidly decreased. Thus, at pH 2, it was unable to conduct a test because the microbes were totally separated.