糞尿와 都市 廢棄物과의 混合處理에 대한 硏究 (Ⅰ) : 肥料化를 中心으로한 實驗室的 考察 Experimental study for the fertilization

金熙鐘,金相烈,金秀生,孫晋彦,金燦國,成周慶,吳英敏 동아대학교 환경문제연구소 1977 硏究報告 Vol.1 No.1

우리나라에 있어서 都市廢棄物의 主인 糞尿와 固形廢棄物의 太宗인 無煙炭재를 同時에 效果的으로 處理할 수 있고 또한 堆肥化시킬 수 있는 好氣性 酸化方式의 最適條件을 얻기 위하여 生糞尿 및 煉炭재의 理化學的 및 生物學的 數値를 測定하고 이를 基礎로하여 上記 兩者를 混合處理 할수 있는 消化條件(溫度, 糞尿와 煉炭재의 配合比, 기타 固形物의 添加量, 注入되는 空氣量의 變化)에 따른 C.O.D., B.O.D.의 變化, 水分 및 電氣傳導度의 變化, 熱灼減量, N量의 變化 等을 硏究하였으며 이들 사이의 相關關係를 檢討하여 다음과 같은 結論을 얻었다. 1. 生糞尿에 固形廢棄物인 煉炭재나 紙類를 配合시켜 消化시키므로서 케이크속의 질소成分의 量을 增加 시킬수 있다. 2. 煉炭재의 配合은 糞尿의 消化速度를 增加 시킨다. 3. 糞尿의 處理를 위한 反應槽의 溫度는 50℃보다 60℃로 維持 시킬때 消化速度가 크다. 4. 反應槽의 溫度를 一定하게 했을때 空氣의 注入速度는 初期 反應時는 적게하고 後期 反應時는 크게 함이 效果的 이다. For the effective treatment and usable disposal of urban wastes in the area of Busan city, the composition of the nightsoil and anthracite bulky ash which is the main munic ipal solid wastes have been studied on the digestion of the compositive mixtures with the variable conditions that are ratio of compounding between nightsoil and ash, amount of solid additives and volume of air for the effective airation at 50, 65℃. The digestion has been detected by the physico-chemical and biological data; pH, specific gravity, content of moisture, C.O.D., B.O.D., electroconductance of the solution of the results, decrease of nition, and volume of total free nitrogen etc. The results are obtained as follows. 1) The characteristics of domestic nightsoil are different to the foreign data as table 5, but the data of anthracite ash almost are same except the composition of Fe₂O₃ and Al₂O₃. 2) Amount of total free nitrogen are increased by the digestion with the addition of solid waste, as effective absorption, to the nightsoil. 3) The digestion are accelerated by the compounding of ash, but the adding of sulfuric acid to fix the free ammonia reduced reaction. 4) The airation have to proceed slowly at initial step, and then endure enough volume of air at the later step.

사용종료매립지 환경현황 및 사후관리대책

김은호,박진식,김정권,안종수,성낙창,김수생,박출재 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

In this study, we can be obtained the following conclusions about the present environmental conditons and the post management of the expired landfill. 1. The component ration in paper, vinyl·plastic and leather·rubber of combustible amounts to much more than others. In the future, decompositions will be delayed considerably, due to these. 2. Except heavy metals in leachate, each of analysis value change considerably, but are equal to the component of general leachate. 3. The soils of lower part in landfill do not differ greatly from surrouding soils. soil pollutions with heavy metals in general domestic waste proved to be concerned greatly. 4. All of landfill facilites are poor in enviromental, and the post management is rearly controlled, so the proper countmeasure preparation is urgent.

"소규모 하수처리"와 "폐자원의 재이용"은 왜 필요한가?

김수생 동아대학교 환경문제연구소 1986 硏究報告 Vol.9 No.3

Sewer systems are not actually available in most of Korea cities, in which city officials have tried to solve water pollution problems by means of constructing a large sized sewage treatment plant without taking sewer systems into any consideration. For this reason, there is a tendency that waste water treatment facilities for newly constructed residential areas and industrial complex are dependent upon the large sized sewage treatment pland to be constructed. In effect a high efficiency of water pollution control can not be achieved without sewer systems, and also it is not possible to construct sewer systems for the existing cities due mainly to financial difficulties and construction problems. Consequently, an urgent water pollution control in the existing cities of korea can surely be achieved in such a way that the construction of community plants with good sewer systems should be made starting from the region where the construction of sewer systems is possible, rather than the construction of large sized waste water treatment systems. When we consider the limitation of natural resourses available for human beings in future, gradually increasing social problems of waste treatment should be dealt with a basis of waste recycling from a national economic point of view. In this symposium topics concerned with those important environmental problems in korea will be focussed, and presented and discussed by all participants.

釜山市 環境問題와 對策 <소고>

金秀生,安鍾洙 동아대학교 환경문제연구소 1986 硏究報告 Vol.9 No.1

都市廢棄物 埋立地에서의 生物學的 安定化에 관한 基礎硏究

金秀生,成樂昌,李敦吉 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.1

The main results of this experimental study are as follows : 1. According to BOD_(5)/COD_(Mn) time passing : The results of landfill after two year and five years are 0.55 - 0.75, 0.35 - 0.50, respectively. 2. Analysis composition generated from decomposition methane gas generation is constantly steady state, four steps process about 38 months after landfill. 3. From the result of analysis of waste composition in landfill, the half life of organic decomposition in waste is about 38 months after landfill. 4. The temperature variation with the depth of landfill the area is the highest in between 1 - 2m. The temperature slope in underground is 1.5 - 2m.

活性슬러지法에서 溶存 酸素 制御에 의한 處理效率과 에너지 節減에 關한 硏究

金秀生,李賢珠,權成根 동아대학교 환경문제연구소 1991 硏究報告 Vol.14 No.1

This paper aiming at the energy reduction, aerated constantly and intermittently(on : 30, off : 30 ; on : 30, off : 50) by the dissolved oxygen control, showed the results as followings, according to HRT variation is artificial wastewater similar to municipal wastewater. 1. The were a little difference respectively in BOD removal efficiency, 96.7% and 95.5%, of constant and intermittent aeration(on:30, off:30), when F/M ration of 0.16㎏-BOD/㎏MLSS·d was fixed. The reduction in electricity cost was 50±5% in intermittent aeration. 2. Substrate removal rater(㎞) were 3.08hr^(-1), and 2.02hr^(-1), respectively, in constant and intermittent aeration(on : 30, off : 30 ; on : 30, off : 50). 3. The respective Sludge Volume Indexes(SVI) were 100∼179㎎/l, 100±20㎎/l, and 100±20㎎/l, with variation of HRT, 4, 6, and 8 hours when operated twice times in constant aeration.

쓰레기 浸出水의 生分解性 實驗에 관한 硏究

金秀生,成樂昌,朴炫建,張盛晧 동아대학교 환경문제연구소 1992 硏究報告 Vol.15 No.1

A Biodegradability test of Leachate was performed and results of the research are as follows ; 1. The Satisfactory removal efficiencies were impossible in treatment of sample L-1 (leachate only), BOD removal efficiencies with 5.9-11.8 HRTwere 62-69% in sample S-1 and BOD removal efficiencies with 6.2-12.3 HRT were 71-76 % in sample S-2. 2. Metabolism Factor(K_(m)) was calculated to be 0.3/hr in sample L-1, 0.8/hr in sample S-1 and 1.4/hr in sample S-2. 3. Oxygen Requirement of about 1.6-1.7kg O₂/kg BOD_(rm), was required in sample S -1 and that of 1.3-1.4kg O₂/kg·BOD_(rm), was required in sample S-2. 4. Sludge production of Sample S-1 was 0.37-0.51 and that of Sample S-2 was 0.41-0.57kg VSS/kg BOD_(rm).

수영천 하류 표면폭기기(Aire-O₂)설치와 수질개선 효과분석

金秀生,安鍾洙 동아대학교 환경문제연구소 1987 硏究報告 Vol.10 No.1

쓰레기 埋立場 浸出水 處理施設 運轉 報告 (Ⅰ)

金秀生,玄龍範,鄭賑化 동아대학교 환경문제연구소 1986 硏究報告 Vol.9 No.1

The result of the four-month survey of the leachate quality and treatment facility operation in the refuse landfill of Hwamyeong-dong. Pusan, is as follows: 1. For the efficient biological treatment of leachate, suitable amount of phosphorus should by supplemented, and as it has been made clear that in case of the period of reclaimation is long. BOD_(5)/COD_(Cr) is low whereas that of reclaimation is short. BOD_(5)/COD_(Cr) is high, BOD_(5)/COD_(Cr) ratio should be reflected in the designing of leachate treatment facilities. 2. In case of biological treatment includeed, the period of test working is required about 70 days. 3. As the atmospheric temperature has considerable effects on the operation of biological treatment plant, it is necessary to install aeration and retaining facility. 4. It has been found that more than 90% of treatment efficiency of refuse landfill in Hwamyeong-dong was maintained regardless of fluctuation of water quality, and the two step contact aeration system especially introduced too the Hwamyeong-dong treatment plant was maintaining continuous biological treatment efficiency.

都市廢棄物 埋立과 環境汚染

金秀生,成樂昌 동아대학교 환경문제연구소 1984 硏究報告 Vol.7 No.2

The objective of this study is to investigate the amount of disposal and the composition of urban solid wastes, to research environmental pollution and harm effect of leachate, gases in a solid waste landfill. Ultimately, the author hope this study is used to be a guide for design of urban solid wastes treatment plant in the future. The results of this study were as follows; 1. Based on the amount of disposal and the composition of urban solid wastes, it is the time that the conventional simple landfill must be changed. 2. The existing leachate treatment plant must be improved, because it has many problems. 3. The counterplan for the harm effect resulted from the gases found in a landfill should be established. 4. From the economic point of view, it is desirable that urban solid wastes should be treated by wide seashore landfill or composting.