표준활성슬러지법과 접촉안정법의 경제성 비교에 관한 연구

김환홍,안송엽 원광대학교 공업기술개발연구소 1995 工業技術開發硏究誌 Vol.15 No.-

The economy of the two sewage treatment methods, conventional activated sludge process and contact stabilization process are studied. The characteristics and differences between the two methods are compared each other with the design of the two process. The results obtained are as follows : 1. Aeration tank capacity of contact stabilization process be decreased suitably. This is because recycle sludge maintain endogeneous respiration phase. 2. Contact stabilization process adequate when BOD contain high ratio suspended solids and conformation in sewerage. 3. First sedimentation tank does not need to operate contact stabilization system.

온도가 간접포기식 流動床에 미치는 영향에 관한 연구

김환홍,정재균,안송엽 원광대학교 1996 論文集 Vol.32 No.2

본 논문은 간접포기식 유동상을 이용한 폐수처리시 실제 현장에서 요구되는 각종 영향 인자 중 온도를 중심으로 한 유동상의 특성을 제시하기 위해 반응기의 단면적(A)와 높이(H)를 다르게한 4개의 반응기를 제작하여 ① media 입경을 0.25mm에서 0.82mm 범위까지 달리하고, media 충전량을 변화시켜가며 최적충전량과 처리효율이 가장 높은 반응기를 선택한 후 최적조건으로 고정하여 놓고, ② 온도에 대한 실험은 12℃에서 35℃까지 약 2~3℃씩 단계적으로 변화시켜 가면서 유입수 유출수의 BOD?, DO, SS, MLSS 농도 등을 측정검토한 연구결과는 다음과 같다. 1. BOD 용적부하율은 4.3kg-BOD?/㎥ㆍd, 수온은 27.5±0.5℃, pH는 6.8~7.2, 수리학적 체류시간은 67분 정도로 고정한 상태로 실험한 결과, 최적의 media충전량은 반응기 床의 단면적(A)과 높이(H)를 달리하여도 A/H比에 관계없이 17%이었다. 2. 28.0±0.5℃에서 media 입경 0.3 ~ 0.42mm과 0.42~0.6mm로 충전한 반응기의 BOD? 제거율은 각각 95.8%, 96.4%로 나타났으며, 17℃ 미만이나 32℃ 이상에서는 80%이하로 떨어졌다. 3. 20~30℃범위에서 MLSS 농도는 7,500㎎/ℓ이상 높게 유지되었지만, 그 외의 온도번위에서는 6,500~7,400㎎/ℓ이었다. 4. 온도 28℃에서 90%이상의 BOD? 제거율을 얻기 위해서는 F/M 比를 0.58kg-BOD/kg-MLSS-d 이하고 유지하여야 함을 알았다. 5. Y축을 BOD제거율, X축을 온도로 한 실험모델식은, media의 입경 0.3~0.42mm로 충전한 2번 반응기의 경우, Y = -26.616 + 9.575X - 0.19X² (R² = 0.95), media의 입경 0.42~0.6mm로 충전한 3번 반응기의 경우, Y = -15.071 + 8.743X - 0.177X² (R² = 0.90)이다. Effect of temperature on the substrate removal efficiency of aerobic fluidized bed reactor were studied experimentally. According to experimental results, fluidized bed reactors for wastewater treatment showed to have various merits that combine the advantage of activated sludge process and trickling filters, and the obtained results were as follows ; 1. Under the BOD loading condition of 4.3kg-BOD?/m³ㆍd, temperature 27.5±0.5℃, pH range 6.8~7.2, HRT 67 minutes, the media concentration appeared to 17% for the maximum BOD removal. 2. In the temperature 28℃, the BOD removal efficiency showed a maximum 96.4%. 3. The biomass concentraton was maintained above 7,500㎎/ℓ in the range of temperature 20 to 30℃, but the other temperature was 6,500 to 7,400 ㎎/ℓ. 4. In the temperature range of 28 to 30℃, F/M ratio to get BOD removal efficiency over 90% was maintained below 0.58 kg-BOD?/kg-MLSS-d. 5. The greater diameter of filled media, the flow rate of recycled water for fluidizing of bioparticles and providing oxygen have to increase.

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.

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.

석가공 폐수의 처리에 적합한 약품의 최적투입량 결정

안송엽,김환홍,정재균 원광대학교 공업기술개발연구소 1996 工業技術開發硏究誌 Vol.16 No.-

For decide to do optimum injection quantity of stone manufacturing wastewater, both economy and treatment efficiency experiment a result intended for a low price things of amount of the coagulant, subcoagulant and high polymer coagulant was developed the inside and outside of the country at the present, Alum+PAC, Alum+ZETAC-57 were used smaller drugs injection weight than Alum or PAC coagulant, and also the removal ratio be a great deal. But these high polymer coagulant treatment of stone manufacturing wastewater, be estimated the most compatibly. When high removal ratio be expressed to the circumstances injection into high polymer coagulant PAC or ZEIAC-57.

무산소-호기 반응기의 유기물과 질소 제거모델 개발

안송엽,김환홍,소재철,권희태 원광대학교 2001 論文集 Vol.26 No.-

본 논문은 무산소-호기 유동상 반응기에서 폐수의 유기물과 질소제거에 관한 것을 나타내었으며, 이 공정은 두 개의 반응기 안에서 질산화와 탈질화로 얻어지는 제거율 결과를 모형화하여 검토하였다. 무산소조의 미생물 농도가 모형식으로 표현되면 -2079.898V2 - 202.2029(H/A) + 1123이고, BOD removal = -0.00613 HRT2 + 0.4014HRT + 46.993 and NO3-N removal = -0.0029 HRT2 + 0.1872 HRT + 77.45 로 각각 표현되어진다. 이러한 실험치는 모형치와 비슷한 값을 가진다고 할 수 있으며, 이 결과는 다른 방법에도 적용이 가능하다고 판단된다. This paper aims to get rid of BOD and nitrogen in wastewater as the anoxic-aerobic fluidized bed. The process for the removal of nitrogen consists of nitrification and denitrification in two reactors. The estimated formula for, Anoxic are Biomass concentration = -2079.898V2- 202.2029(H/A) + 1123, BOD removal = -0.00613 HRT2 + 0.4014HRT + 46.993 and NO3-N removal = -0.0029 HRT2 + 0.1872 HRT + 77.45. The experimental values are similar to values of estimated formula. Therefore, this result is able to adapt the other cases.

만경강 지류에 서식하는 Unio Douglasiae 의 중금속 함량에 관한 조사연구

유일수,김환홍 ( Il Sou Yoo,Hwan Hong Kim ) 한국하천호수학회 1991 생태와 환경 Vol.24 No.2

For this survey, Unio douglasiae was collected from six station in Mangyung River from October 1987 to October 1990. The contents of Cd, Pb, Cr, Cu and Zn in edible portion of Unio douglasiae were analyzed. The results obtained are as follows; The contents of heavy metals in Unio douglasiae shoued in the range of 0.03∼0.34 ppm for Cd, 0.18∼1.69 ppm for Pb, 0.04∼0.38 ppm for Cr, 0.38∼1.24 ppm for Cu, 1.94∼3.24 ppm for Zn. As a whole, contents of heavy metals contained in Unio douglasiae from the lower course of the Jeon Ju Chon were larger than those from the upper course. But those was little difference between the contents of heavy metal at E site and F site.

무산소-호기 유동상을 이용한 유기물 및 질소제거

안송엽,김환홍,권희태 한국환경기술학회 2002 한국환경기술학회지 Vol.3 No.3

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.

무산소-호기 유동상에 의한 유기물제거 특성

안송엽,김환홍,권희태 원광대학교 공업기술개발연구소 1999 工業技術開發硏究誌 Vol.19 No.-

The results obtain through varying the recycle ratio, the hydraulic retention time and the recirculation ratio between reactors show that BOD removal efficiency of organic matter and nitrogen removal efficiency are above 93%, 88% respectively, and the denitrification efficiency is above 85% when C/N ratio and H/A ratio are above 5 and 3,16, respectively. The biological fluidized bed obtains 93% BOD removal in 48min, at 87% NH4+-N removal in32min, and at 84% NO3--N removal at each reactor.