세립자 첨가 활성슬러지에 의한 하수처리

양상현,나덕관 대한상하수도학회 1987 상하수도학회지 Vol.1 No.-

Experimental studies for the Sewage treatment by activated sludge process added activated carbon and briquette ash were executed, and the obtained results are as follows; 1. As the concentration of activated sludge increases, settling velocity and volume of it obviously decrease and its settling conditions become very poor. 2. Most appropriate sizes of activated carbon and briquette ash added to activated sludge process are 0.1㎜ to 0.15㎜. And each volume of them is about 6g/ℓ. The settling rate of activated sludge increases by the addition of media such as activated carbon or briquette ash, and this tendency is more remarkable when the activated sludge concentration is high. 3. Adding the appropriate particle size and volume of media to activated sludge makes Sewage treatment more effective. Especially, as the media, briquette ash is more economic than activated carbon added to the activated sludge process because the cost of briquette ash is very cheap.

加壓浮上法에 依한 活性슬러지 混合液의 固液分離에 關한 硏究

梁相鉉,羅德寬 全北大學校 1985 論文集 Vol.27 No.-

An effective technique of sludge separation is required for concentrated activated sludge process. The dissolved-air flotation (DAF) has been shown to be efficient process for sludge separation. The factors affecting DAF process for activated sludge separation are type and concentration of sludge, air/solid ratio, ratio of pressurized water flow, pressure, sludge detention time, temperature, sludge and hydraulic loading rate, recycle flow rate of sludge and type and quantity of chemical aid. In order to study the optimal operation condition for sludge separation, the influence factors such as type and concentration of sludge, ratio of pressurized water flow and pressure are investigated by batch and continuous reactor experiments of DAF and sedimentation test. The results obtained through experimental investigation are as follws; 1. For the bulking and concentrated sludge, DAF is more effective than sedimentation for the sludge separation. 2. In DAF, the critical ratio of pressurized water flow exist. The critical value varies with the pressure in the tank. That is, according to the pressure changes from 3 to 5 kg/㎠, the critical value varies from 0.25 to 0.67 accordingly. 3. Pressure affects the ratio of pressurized water flow, but it does not show any influence upon the DAF efficiency directly. 4. Continuous experimental rerults was not better than those of batch.

全州川의 衛生工學的 特性에 關한 硏究(Ⅰ)

梁相鉉 전북대학교 공업기술연구소 1976 工學硏究 Vol.5 No.-

Jeon-ju River flows through Jeon-ju City. Raw sewages are discharged from many outfalls of sewers into the river. To study the sanitary engineering characteristics of the river water, author measured the pH, water temperature, dissolved oxygen, biochemical oxygen demand and suspended solids. Microorganisms on the river bed were observed. The runoff, width of flow, depth, velocity and slope of river bed were also measured. The method for predicting the BOD and oxygen deficit at any point of river into which sewages are discharged from many outfalls of sewers was also studied. The results of these studies are as follows ; 1. DO is a convenient index of river pollution due to organic substance. 2. The aeration effect of Jeonju River is high because of the large slope, large velocity, small depth and roughness of river bed. 3. The water quality of the river section which is examined get worse as water flows along the stream. 4. Because of serious pollution, the river is of no use for any purposes except the transportation of sewage under aerobic condition. 5. According to the method proposed by author in this paper, prediction of BOD and oxygen deficit at any point of river into which sewages are discharged from many outfalls of sewers is possible.

改良酸化溝法에 의한 廢水處理의 硏究 (ll) : 改良酸化溝斷面 및 Aeration rotor의 推定 Chiefly on the Improved oxydatin ditch cross section and aeration rotor

梁相鉉 전북대학교 공업기술연구소 1980 工學硏究 Vol.10 No.-

To improve the defects of conventional oxidation ditch process, it is necessary to increase the depth of oxidation ditch and to alter the rotor form of TNO. In this paper, the standard cross section of the ditch and improved aeration rotor is proposed and their oxygenation cap-acity, velocity of mixed liquor in the ditch and power requirement are examined. The results obtained are as follows ; Generally, the larger the immersion depth and rotation speed are, the larger the oxygenation capacity of aeration rotor becomes, and the aeration efficiency is large when the rotation is lower than 80 rpm. If the standard ditch section of Fig. 4, and cage form aeration rotor of TNO is adopted and used with 16cm immersion depth and 75 rpm rotation of aeration rotor, it is presumed that the oxygenation capacity for organic wastewater equivalent to 466 men's and sufficient velocity of mixed liquor can be maintained. But, as there is the possibility of the deficit of mixed liquor velocity in the lower parts of the ditch, the cage rotor of TNO should be slightly altered for improved oxidation ditch process.

製紙廢水處理場 슬러지의 燒却處分에 關한 硏究

梁相鉉,姜允錫 全北大學校 附設 都市및環境硏究所 1992 都市 및 環境硏究 Vol.7 No.-

The techique for combustion of paper mill sludge were studied, and obtained results were as follows: 1. As paper mill sludge comprise much combustible materials, combustion is ths most economical disposal of the sludge, and the resulting heat is used for production of steam which is available for paper making process effectively. 2. Before sludge combustion, pretreatments such as thickening, dewatering and dring of the sludge are needed. 3. The moisture content and melting state of sludge-ash influence the combustion efficiency significantely. 4. The sludge-ash of paper mill sludge can be used for fertilizer and soil improving material, but too addition of it into soil is harmfull for plants.

한국 전통사찰에 수용된 물의 의미 해석

양상현 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2

粒狀 메디아를 充塡한 浸漬濾床法의 反應器 特性에 관한 硏究

梁相鉉,元燦喜,백종탁 全北大學校 附設 都市및環境硏究所 1989 都市 및 環境硏究 Vol.4 No.-

The factor which are dominant for wastewater treatment efficiency in submerged biofilter filled with granular media has been considered variously. But, aeration tank, the shape of reactor, the diameter of media, recycle ratio and BOD loadings are important factors. The purpose of this study is to investigate the influence of the shape of aeration tank and reactor, the diameter of media, recycle ratio and the BOD loadings. The obtained results are as follows; 1. When the air flow rate in aeration tank was changed from 100 ℓ /hr. ℓ to 500 ℓ /hr. ℓ and H/D was 3.1 to 29.7, Considering of power and power efficiency, the most appropriate H/D and air flow rate was 13.9 and 300 ℓ /hr. ℓ, respectively. 2. The dispersion number was from 1.5×10 exp (-2) to 10.4×10 exp (-2) and then flow pattern in reactor was the intermediate of the plug flow and complete mixing. 3. Theoretical recycle ratio for oxygen demand in reactor was 19.3, but experimental result was 30. 4. Under the experimental condition of the recycle ratio of over 30, H/D of 12 and the BOD loadings below 2.0㎏/ ㎡. d, the effluent BOD_5 of the system was satisfied the effluent standard. 5. When the diameter of media and the ratio of height to diameter of reactor(H/D) were 11.1㎜ and 12, respectively, removal efficiency was the highest value of 92%

조선시대 사찰 장엄의 상징과 교리적 근거에 대하여

양상현 순천향대학교 부설 산업기술연구소 2003 순천향 산업기술연구소논문집 Vol.9 No.1

Buddhist temples are decorated a lot. If we don't understand the buddhist philosophy, it seems to be too luxurious. But, decorated temple expresses the buddhist philosophy. Luxuriously decorated buddhist temple is the Vyuha, enhancing values of buddha's teachings. It shows people buddhist's ideal world which is not to be in the real world, encouraging them to make efforts to reach there. The reason why they decorate temple luxuriously under the buddhist philosophy insisting plain life is that it is used as an upāya to lead people to buddhistic enlightenment. In temple where people come into contact with buddhist monk, they may experience buddhistic teachings through touching and looking buddhist architectures as well as through hearing them from monk.

삼국유사(三國遺事)의 건축 사료적 가치에 대한 고찰

양상현 순천향대학교 부설 산업기술연구소 2010 순천향 산업기술연구소논문집 Vol.16 No.1

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조선후기 진경산수화(眞景山水畵)에 보이는 사찰 건축

양상현 순천향대학교 교수학습개발센터 2005 순천향 산업기술연구소논문집 Vol.11 No.1

There are many landscape paintings in Chosun Era, which real architectures in that era are shown in detail. These paintings are good sources for infering figures in the past with addition and subtraction to some extent because traditional architectures have been destroyed or damaged through the long period of time. This study is to look over temple architecture figures in the Chosun era shown on landscape paintings.