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내부순환 유동층보일러(ICFB)를 이용한 고효율 폐기물 소각발전
송상훈(Sang-Hun Song),오종혁(Jong-Hyeok Oh),최 탁(Tak Choi),강원수(Won-Su Kang),기문봉(Moon-Bong Ki) 한국열환경공학회 2009 한국열환경공학회 학술대회지 Vol.2009 No.추계
내부순환 유동층 소각보일러(ICFB)는 석탄뿐만 아니라 다양한 폐자원을 연료로 이용할 수 있는 고효율 소각보일러기술로, 에너지 고갈과 온실가스 규제라는 전세계적 문제에 대처하여 폐기물 에너지화를 실현할 수 있는 기술이다. 본 논문에서는 국내에서 도 곧 상용화 예정중인 ICFB의 기술개요 및 성능에 대해 소개한다.
奇文奉,李盛鎬,金秀生 동아대학교 환경문제연구소 1987 硏究報告 Vol.10 No.1
For the purpose of treating the sludge which contains hazardous heavy metals, various kinds of studies were made on the unconfined compressive strength which various with the ratio of portland cement. Aluminum sulfate and sodium silicate, the effects upon cements binding influenced by moisture content, volatile solid and pH of sludge, and the amount of leaching solution which comes after cement binding. Erief results from the said studies are as following; 1. As a result of compression tests at various mixing ratio of binders, the highest intensity was found at the ratio of portland cement(0.4) + aluminum sulfate(0.05) + sodium silicate(0.05) + sludge(0.5). Generally the compressive strength tends to be in direct proportion with period of curing. 2. In case that sludge was binded at the same mixing ratio of binders to sludge, the compressive strength was increased and the amount of leaching solution was decreased at low content of moisture and volatile solid and high pH of sludge. 3. while the compressive strength is over than 9.0㎏/㎠, the hazardous heavy metals are not leached from the brick. 4. As the C/S ratio of binders was increasing, the amount of leaching hazardous heavy metals was decreasing. When binders were mixed at the ratio;portland cement+Aluminum sulfate(0.1)+Sodium silicate(0.1) and the C/S ratio of binders were 0.5, leaching solution amount was minimum. 5. The compressive strength of the sludge in the moisture content of 70% to 75% is made of over than 10㎏/㎠ at the curing of 28 days. When binders were mixed at the ratio; portland cement were over 0.5 of the C/S ratio, portland cement+Aluminum sulfate(0.1) were over 0.35 of the C/S ratio, portland cement+Sodium silicate(0.1) were over 0.35 of the C/S ratio and portland cement+Aluminum sulfate(0.05)+Sodium silicate(0.05) were over 0.25 of the C/S ratio.
鄭渭得,奇文奉,安鍾洙 동아대학교 환경문제연구소 1989 硏究報告 Vol.12 No.1
RBC system was used in order to accomplish the COD removal and nitrification simultaneously in one step. The effect of pH on nitrification rate was examined in a suspended growth system, using microorganism scraped from the rotating discs, and an optimum pH value was between 7.5 and 8.5. Nitrification was not accompanied by a large amount of dissolved oxygen supplied in the system. This might be attributed to the increased thickness of the COD - utilizer - biofilm limited oxygen and substrate transfer for nitrification under high COD loading. It was found that the COD loading must be reduced to below 0.027㎎/㎠·hr, for nitrification to occur in the rotating disc system, and that a multi - stage system could improve the treatment of waste waster containing both high COD and inorganic nitrogen.
朴福祿,奇文奉,李盛鎬 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.1
As small industrial complex for rural area was established in all rural areas scatteringly, unproper treatment of waste water discharged from these complex directly give damage at farm land although quantity of waste waters are relative samll. For the purpose of proper design and construction of waste water treatment plant, it is very important to find characteristics of waste water about individual factories. Our investigation of waste water characteristics are as followings. 1) Quantity of sewage discharged by employee is average 104 lpcd. 2) Ratio to sewage and waste water appears 62% to 38% Characteristics of waste waters will be carefully applicated to each factory under consideration of kind of Factory, type of process and rate of work, etc. 3) Maximum load of waste waters appers at A.M 12, and peak factor is 3.6 4) Conversion rate of waste waters from water appears 0.84 5) Quality of sewage appear BOD 138, COD 56, SS 125㎎/l. Quality of industrial waste water have a bid differences according to king of factory. 6) Forecastion quantity of waste waters per area and number of employee could be calculated to following equations. · Quantity of waste water per working area Y=0.003597X+109 · Number of employee per working area Y Y=0.012468X+246(For minimum employees) Y=0.0170812X+637(For Maximum employees)