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      • KCI등재

        폐타이어 담체가 충전된 유동상 생물막법을 이용한 도시하수 처리

        송준상,문형극,이홍근 ( Jun Sang Song,Hyung Keuk Moon,Hong Keun Lee ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.3

        Samkwang Aqua-Clear, Inc. has developed the fluidized bed biofilm method using the SAC Bio-Carrier made of waste tire powder and called Bio-SAC Process. The removal rate of organic matter of this method can treat the wastewater 4 times faster than the conventional activated sludge method and it has specially designed aerobic bio-reactor filled with 20% SAC Bio-carrier of the volume of reactor. We have done the application research for the municipal sewerage treatment and the results are summarized as follows: The removal rate of biochemical oxygen demand(BOD) and chemical oxygen demand(COD-Mn) was around 90% and the Hydraulic retention time(HRT) of the aerobic bio-reactor is 1.5 hours. Although the suspended solids(SS) concentration of raw water was very high and varied widely because this method has no primary sedimentation tank, its concentration of the effluent is only around 10㎎/L. Also nitrification reaction was occurred and the removal rate of total kjeldahl nitrogen(TKN) was around 80% during the short HRT. The removal rate of total phosphorus was around 70% with chemical coagulation process using the alum and polymer. Its rate was higher than that of the conventional activated sludge method. The bio-film microorganism grew abundantly on the surface of the SAC Bio-carrier. Epistylis spp. was observed as a predominant species, and the depth of the biofilm was 0.3∼1.0㎜. This species is one of the peritrichita that grow well in the aerobic reactor at the good treatment condition. The treatment coefficient(T₁) of Bio-SAC^R process from the Grau`s multicomponent degradation model was four times higher than that of the activated sludge method. This SAC treatment method can not only reduced the 50% of the building area of the wastewater treatment plant, but also reduced the 20% of the capital cost. Because the removal rate of the total phosphorus is much higher than the activated sludge method, this treatment method is more effective process as the tool of the prevention method for the point source control of the eutrophication.

      • KCI등재

        소형 퇴비화 용기를 이용한 유기성 주방폐기물의 퇴비화에 관한 기초연구

        송준상,최훈근,김규연,Song, Jun-Sang,Choi, Hun-Keun,Kim, Kyu-Yeon 유기성자원학회 1993 유기물자원화 Vol.1 No.2

        일반가정이나 식당에서 배출되는 유기성주방폐기물을 소형용기를 이용하여 퇴비화할 수 있는지를 알아보기 위해 밑바닥이 없는 세개의 소형용기를 바깥 뜰의 토양면에 설치하였다. 퇴비화용기의 내부를 준혐기성상태, 다공관을 설치한 자연대류형, 산기관을 이용하여 공기를 불어 넣어주는 공기공급형으로 각각 조건을 만든 후 주방에서 배출된 폐기물을 충전한 후 120 여일간 실험을 한 결과 수분은 80% 에서 40-50% 로, 휘발성고형물질(건조중량)은 80% 에서 48-55% 로, 탄소질소비는 18에서 8-10으로 안정화 되었다. 휘발성고형물질 % 와 탄소질소비의 분해에 의한 변화는 2차 반응식에 잘 부합되었으며 휘발성고형물질의 분해시 반응속도상수 k 는 준혐기성의 경우 $4.96{\times}10^{-5}/day$, 자연대류형은 $5.82{\times}10^{-5}/day$, 공기공급형은 $8.42{\times}10^{-5}/day$ 인 것으로 나타나 본 실험에 사용한 것과 유사한 용기를 사용하여 유기성주방폐기물을 퇴비화 할 경우 인위적으로 공기를 공급하는것이 퇴비화에 소요되는 기간을 단축할 수 있을 것으로 나타났다. This study was carried out to evaluate the possibility of composting for organic solid waste from restaurants and domestics. Small three vessels were prepared which were conditioned to semianaerobic, convectional and air-blowed type. During the experiment period for 4 months, the values of volatile solid(VS) %, moisture % and carbon/nitrogen (C/N) ratio of the wastes in the vessels were stabilized, 80 % to 40-50 %, 80 % to 48-55 % and 18 to 8-10, respectively. On the basis of VS % and C/N ratio, the reactions were more adaptable to 2nd order formula than to 1st order one, Reaction rate constant of the 3 vessels were estimated, $4.96{\times}10^{-5}(day^{-1})$ in the semianaerobic type, $5.82{\times}10^{-5}(day^{-1})$ in the convectional type and $8.42{\times}10^{-5}(day^{-1})$ in the air-blowed type on VS. Compared reaction rate constants(k), it can be said that composting period shorten if air is supplied artificially and that vessels simular to those of this study are useful for household organic waste at the backyards.

      • KCI우수등재
      • KCI등재

        지렁이 분변토가 식물성장에 미치는 영향

        송준상(Jun-sang Song),이길철(Kil-Chul Lee),전성환(Sung-Hwan Chun),이민도(Min-Do Lee),조경희(Kyung-Hee Cho) 유기성자원학회 1993 유기물자원화 Vol.1 No.2

        본연구는 분뇨처리장과 제지폐수 처리장에서 발생된 유기성 슬러지를 지렁이 먹이로 활용하고 지렁이가 배설한 분변토(떠st) 를 유기질비료, 토양개량제로 재활용하여 폐기처분되어야 하는 유기성 슬러지를 자원화하는 기술을 개발하는 것으로 폐기물 재활용의 일익을 담당할 수 있을 것으로 사료된다. 분변토의 비효성조사를 위해 오이, 토마토, 배추 3가지 작물의 발아율을 조사한 결과 분변토를 배합하지 않은 대조구에서는 40.7-61. 7%로 발아율이 낮았으나, 30-45% 의 분변토를 배합한 처리구에서 3가지 작물의 발아율이 90% 이상으로 높게 나타났다. 분뇨처리장 슬러지를 지렁이 먹이로 하여 발생된 분변토로 식재한 오이,토마토,배추의 성장후 초장,경경,엽면적,엽수,생체중,건물중,뿌리의 생체중,및 건물중 등 8가지 생육상황을 조사한 결과 15%, 60% 의 분변토를 배합한 처 리구에 비해 30-45% 의 분변토를 배합한 처리구에서 3가지 작물의 성장이 양호한 것으로 나타났다. 제지폐수 처리장 슬러지를 지렁이 먹이로 하여 발생된 분변토로 식재한 오이, 토마토, 배추의 생육상황을 조사한 결과 30-45% 의 분변토를 배합한 처리구에서 3가지 작물 모두 성장이 양호한 것으로 나타났으며,분뇨분변토와는 달리 60% 의 분변토를 배합한 처리구에서도 생육장애가 발생되지 않고 성장이 양호하였다. Objectives in this study are to stabilize the organic sludges which were produced from papermi11 wastewater, nightsoil treatment faci1ities and utilized as foods for earthworm, to find the method for using the cast which was orginated by earthworm as fertilizer, and ultimately to develop the practical technique to solve the environmental problems by optimization of wastes treatment. The results of this study were summarized as follows. In the investigation for fertilizer effect of cast, germination rates of cucumber, tomato, and cabbage were investigated. The germination status of 3 types of plants was excellent as over 90% in the combination case of 30-45 % cast. In the investigation for fertilizer effect of cast derived from nightsoil sludge, the growing status of cucumber, tomato, and cabbage was excellent in the combination case of 30-45 % cast. In the experiment for fertilizer effect investigation of cast derived from papermill sludge, the growing status of cucumber, tomato, and cabbage was excellent in the combination case of 30-45 % cast. AIso, in the combination case of 60% cast, plants growth was not disturbed.

      • KCI등재

        지렁이를 이용한 퇴비화 조건과 분변토의 비료성·안전성에 관한 연구

        송준상(Jun-Sang Song),이길철(Kil-Chul Lee),전성환(Sung-Hwan Chun),최훈근(Hun-Keun Choi),조경희(Kyung-Hee Cho),김선일(Sun-il Kim) 유기성자원학회 1993 유기물자원화 Vol.1 No.1

        본보는 분뇨처리장에서 잉여 슬러지로 발생하는 유기성 슬러지를 지렁이 먹이로 활용하여 처리하는 폐기물 자원화 기술의 하나인 Vermicomposting 방법을 효율적으로 운영관리하기 위한 온도, pH, 사육밀도의 적정사육조건과 Vermicomposting 의 부산물인 분변토의 비료성분과 안전성을 조사하였는데 지렁이 생존율은 온도 10-15'C 에서 98.3%, pH 5.8-7.5에서 75% 및 빌도 1/79.8 cm3에서 100% 였다. 지렁이 생체량 변화는 온도 10-15'C 에서 266%, pH 5.8-7.5에서 227% 및 빌도 1/79.8 cm3에서 325% 로 많이 증가하였으며, 지렁이 분변토 발생량은 옹도 20-25'C 에서 0.06 g/cap./day, pH 5.8-7.5에서 O. 065 g/cap./day 및 빌도 1/79.8 cm3에서 0.1 g/cap. /day로 많이 발생하는 것으로 나타났다. 또한, 지렁이 난포 생산은 온도 10-15 "C에서 3.8 ea./cap./6weeks, pH 5.8-7.5에서 2.95 ea./cap./6weeks및 빌도 1/79.8 cm3에서 3.16 ea. /cap./6weeks로 많이 생산되었으며, 지렁이의 먹이로 공급된 슬러지와 먹고 배설한 분변토의 pH는 6.2에서 5. 7로 낮아지며 휘발성 고형물질은 2.9% 감소되는 것으로 나타났다. 또한 NH3-N는 6.984 μ g/g에서 0.991 μ g/g으로 감소한 반면, N03-N는 3.213 μ g/g에서 7. 706μ g/g으로 증가되는 것으로 나타났다. 그리고 지렁이 분변토 중의 분원성 대장균은 슬러지에서 보다 88.6-99.1% (평균 95.7%) 정도 감소되는 것으로 조사되었으며 병원성 장내세균인 Salmonel1a, Shigel1a, Vibrio 등은 검출되지 않았다. 이와 같은 결과로 미루어 볼 때 Vermicomposting 기술은 유기성 슬러지를 재이용함과 동시에 폐기물을 처리하는 효과가 있으며 앞으로 이를 보급함으로써 폐기볼 처리에 중요분야가 될 수 있을 것으로 판단되었다. This study was conducted to achieve develop organic sludge recyc1ing technology as sludge make a prey of earthworm. Therefore sludge treatment and recyc1ing technology is an important field by which this research project to solve landfill site and reduction treatment expense using vermicomposting treatment process on the waste sludge from the biological wastewater treatment plant. In experimental results on the optimum conditions of vermicomposting of nightsoil treatment sludge, survival rates were observed 98.3% in temperature of 10-15 0C, 75% in pH 5.8-7.5 and 100% in density of 1179.8 crrr, respectively. Liveweight changes of earthworm were increased 266% in temperature of 1O-15 0C, 227% in pH 5.8-7.5 and 325 % in density 1 cap./79.8 cm", respectively. Casting production rate were generated 0.06g/cap./day in temperature 20-25 0C, 0.065 g/cap./day in pH 5.8-7.5 and 0.1 g/cap./day in density 1 cap.179.8 cm", respectively. Cocoon production numbers were observed 3.8 ea. /cap.in 1O-15 "C, 2.95 ea./cap.in pH 5.8-7.5 and 3.16 ea./cap. in 1 cap./79.8 cm" during 6weeks, respectively. pH was droped by 6.2 to 5.7, volatile solids was decreased by 2.9% , NH3-N were also reduced by 6.984 μ잉g to 0.991 μ gjg. N03-N, however, were increased by 3.213 μ gjg to 7.706 μ gjg. Fecal coliforms and pathogenic bacteria are analyzed by microbiological method to assess public hea1th safety of casting. Number of fecal coliform groups were reduced 88.6-99.1% (Avg. 95.7%) approximately. And pathogenic bacteria such as Salmonella, Shiegella and Vibrio, were not isolated from the earthworm cast.

      • KCI등재

        막여과 기술을 이용한 폐수재활용

        송준상(Jun Sang Song),이형숙(Hyung Suk Lee),문형극(Hyung Keuk Moon),남웅희(Woong Hee Nam) 한국수처리학회 1997 한국수처리학회지 Vol.5 No.3

        A study, wastewater reuse techniques using membrane seperation system are discussed. CMF(Continuous Micro Filtration) and R/O(Reverse Osmosis) pilot test were conducted to study if the reusing wastewater is used as ultra pure water in two sites. One site is Posco HU¨ls in Chonan(below A plant) and the other site is samsung in Onyang(below B plant). The results are as follows. 1) CMF has proven effective in Turbidity, TDS, Color, SS, T-Fe, and SDI removal, and also suitable as pre-treatment faccility of R/O system in both plants. 2) The removal rate of organic metter and Nutrient in R/O treated water presented 79.08% and 85.57% respectively. This results are guaranteed condition of R/O treated water in A plant. 3) In A plant, nitrate was not removed in CMF, but was removed 94.35% in R/O. 4) In B plant, the raw water containing almost particle size below 0.2㎛ was pretreated by coagulation and than treated by CMF, the removal rate of turbidity and SS presented 100%. 5) In plant the concentration of conductivity, TDS, and Cl^- was higher treated water than raw water. It is considered that innoculate chemical in CMF influent. But because this water quality is guaranteed for R/O influent, not influenced on R/O life and select of design. 6) As seen this pilot test, CMF and R/O system can be producted ultra pure water and also save more construction area and running cost than those of conventional type if raw water was pretreated appropriately.

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