하,폐수처리(1) : 최초침전지를 대체하기 위한 고속생물막 침전지의 처리특성에 관한 연구

장성부 ( Sung Pu Chang ),강용태 ( Yong Tae Kang ),김태기 ( Tae Ki Kim ),조용현 ( Yong Hun Cho ) 한국물환경학회 ( 구 한국수질보전학회 ) 2003 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2003 No.-

하,폐수처리(1) : 최초침전지를 대체하기 위한 고속생물막 침전지의 처리특성에 관한 연구

장성부 ( Sung Pu Chang ),강용태 ( Yong Tae Kang ),김태기 ( Tae Ki Kim ),조용현 ( Yong Hun Cho ) 대한상하수도학회 2003 공동춘계 학술발표회 논문집 Vol.2003 No.-

해양으로 유입되는 도심 하천의 비점오염물질 특성에 관한 연구

강용태,장성부 東亞大學校 海洋資源硏究所 2005 硏究論文集 Vol.17 No.-

It is now recognized that controlling the pollution entering the rivers and coasts from non-point sources, including agricultural and urban runoffs, is of great urgency. In this paper, Quantity and quality of basins streaming down ocean were surveyed and concentration of biological oxygen demand(BOD), Chemical oxygen demand(COD), Suspended solids(SS), heavy metal, etc. were measured. The results showed that: 1. On dry weather, a quantity of Gamjeon basin is 0.18CMS in the summer but 0.11CMS in the winter. 2. Gamjeon basin's quality was represented that BOD, COD, T-N and T-P was 115mg/L(max), 163mg.L(max), 12.9~27.0mg/L, and 0.40~1.43mg/L. on the other hand the heavy metal was appeared serious pollution. Hakjang was represented that BOD and COD was 15.7~43.0mg/L, 12.0~52.9mg/L respectively. 3. During the wet weather, quantities of Gamjeon and Hakjang were peaked in one hour and pollutant loading was similar. Peak quantity of Gamjeon and Hakjang basin was 18CMS and 25.25CMS. 4. Gamjeon basin's quality was represented that maximum BOD concentration was 250mg/L and DO concentration of Hakjang basin was 0.64~13.2mg/L. Heavy metal concentrations of Eomgung area was over the guide line;Cd and Cr^(+6) were estimated to be 0.1mg/L and 0.197mg/L. 5. It is clear that runoff load by urban non-point source pollutants plays important role in the control and management of non-point sources for the watershed.

최초 침전지를 대체하기 위한 고속생물막 침전지의 특성에 관한 연구

강용태,장성부,조용현 동아대학교 건설기술연구소 2003 硏究報告 Vol.27 No.1

It is not easy to find reasonable area for construction of wastewater treatment facility. and biological treatment such as a conventional activated sludge process can't remove non-point source pollutant in initial rainfall, sufficiently. So if we use physical treatment and disinfection process, combined sewer overflows don't cause significant pollution. In this study, to reduce area of wastewater treatment facility, the rapid biofilm clarifier was configurated and its characteristics were analyzed according to the velocity of filtration and cycles of backwash. Specific characteristics of the rapid biofilm clarifier with 50 ㎥/d of volume were represented that Turbidity and SS removal rate was 30.2%, 30.9% respectively, and that of BOD and COD was 22.0%, 21.0% without regard to change of quality of raw water. By comparing the rapid biofilm clarifier and clarifier of conventional activated sludge process with having 50 ㎥/㎡·d, of surface-loading rate and 2.0 m of depth, we could know the rapid biofilm clarifier could reduce area of clarifier 11 times as much than that of conventional activated sludge process. Cycle of backwash was represented as 24, 18, and 24 hours when velocity of filtration was 222 ㎥/㎡·d, 333 ㎥/㎡·d, and 555 ㎥/㎡·d, and BOD. SS biologically removed in the rapid biofilm clarifier was 342.80, 346.82 g/d, 258.08, 222.72 g/d, and 143.36, 136.52 g/d respectively.

오존을 이용한 하수2차 처리수의 처리 및 슬러지 감량화에 관한 연구

강용태,조용현,장성부,최선영 東亞大學校建設技術硏究所 2004 硏究論文集 Vol.28 No.1

Nowadays, most of water source is deteriorating due to depending on surface water more than 90%. New disinfection facilities are urgent because a provision of total coliforms was made newly and have gone into effect since in January 2003 for securing of water source. And waste sludge treatments is an outstanding environment question because of several reasons such as increases of waste sludge, high cost of waste sludge treatment and prohibition of sludge treatment method having been utilized. In this study, specific characteristics of ozone treatment for wastewater effluent and volume reduction of waste sludge were studied with pilot-plant. The results of the study are followed: A removal efficiencies of total-coliforms with ozone dose change of 1.6, 2.6, 3.5, 4.5gO3/m3Water were 73.7, 88.1, 95.6, 97.2% .respectively. And MLSS reduction rate of waste sludge with ozone dose change of 0.2, 0.4, 0.6, 0.8gO3/gSS were 38.0, 50.0, 57.9, 62.0%.respectively. CODMn removal efficiency of that was 50.5, 65.0, 76.6, 82.1% respectively and SV30 reduced 92.6% even if ozone dose was 0.2gO3/gSS. Therefore, it is found that ozone treatment is very effective for sludge volume reduction and solidㆍliquid separation.

원수주입위치 변화에 따른 침지식 막반응조의 처리특성과 중수도 적용성 평가에 관한 연구

강용태,조용현,장성부 동아대학교 건설기술연구소 2003 硏究報告 Vol.27 No.1

Nowadays, Water is deteriorating with several reasons such as increase of wastewater which is flowed into river and limitation of water resource. Therefore, we concentrate on plans for securing of water resource by reusing wastewater treatment effluent. In this study, reuse system was organized using submerged membrane bioreactor(SMBR) consisted of anoxic, select, and aerobic tank with membrane as plan for solving problems mentioned above and optimized operating hydrauric retention time(HRT) was found by comparing with the characteristics of treatment with several HRT. Also, the lst floor and 2nd floor membrane module were analyzed to find more effective operating condition in SMBR. Specific characteristics of treatment for waste water SMBR was represented as follows. we could know below 10㎎/L of BOD, below 5㎎/L of COD, 0 ㎎/L of SS without regard to change of HRT, which was satisfied with the standard of reuse water. Optimized HRT was 2.3hr and by composing the 2nd floor membrane module, air flow rate could be reduced 28.5% lower than of the 1st floor membrane.

적조예방을 위한 ASA시스템의 도입 가능성에 관한 연구

강용태,조용현,장성부 東亞大學校海洋資源硏究所 2004 硏究論文集 Vol.16 No.-

To prevent from algal-bloom and red tide outbreak this study was focussed on Biological Nutrient Removal using the novel BNR system, Advanced Step Aeration(ASA) system, which could cope with not only a low level of municipal wastewater but also a high strength of apartment wastewater. Nutrient removals through ASA system were considerably excelent: at influent levels of T-N 40~80mg/l, T-P 4.0~8.0mg/l, respectively, removal efficiencies for T-N and T-P are 70~85% and 90% and effluent level for T-N and T-P are 10~15mg/l and 0.4~0.6mg/l. On the basis of 13℃, nitrification rate(KN) in aerobic tank was calculated to be 0.892 mgN/gMLSSㆍhr. Denitrification rate(KDN) according to C/N ratio from 3.68 to 4.3 and temperature from 13 to 18 ℃ was linearly increased and presented to be from 0.64 to 0.95 mgN/gMLSS ㆍhr. Step-feeding raw wastewater to anaerobic and anoxic tank and using raw wastewater as external carbon source have brought about the improvement of denitrification capacity. Anoxic sludge tank minimized the nitrite and nitrate inhibition in the return activated sludge and maximized phosphorus release through the stable DO control.

해양으로 유입되는 도심 하천의 비점오염물질 특성에 관한 연구

강용태(Kang Yong-Tae),장성부(Chang Sung-Pu) 동아대학교 해양자원연구소 2005 동아대학교 해양자원연구소 연구논문집 Vol.17 No.-

  It is now recognized that controlling the pollution entering the rivers and coasts from non-point sources, including agricultural and urban runoffs, is of great urgency.<BR>  In this paper, Quantity and quality of basins streaming down ocean were surveyed and concentration of biological oxygen demand(BOD), Chemical oxygen demand(COD), Suspended solids(SS), heavy metal, etc. were measured. The results showed that:<BR>  1. On dry weather, a quantity of Gamjeon basin is 0.18CMS in the summer but 0.11CMS in the winter.<BR>  2. Gamjeon basin"s quality was represented that BOD, COD, T-N and T-P was 115㎎/L(max), 163㎎/L(max), 12.9~27.0㎎/L, and 0.40~1.43㎎/L. on the other hand the heavy metal was appeared serious pollution. Hakjang was represented that BOD and COD was 15.7~43.0㎎/L, 12.0~52.9㎎/L respectively.<BR>  3. During the wet weather, quantities of Gamjeon and Hakjang were peaked in one hour and pollutant loading was similar. Peak quantity of Gamjeon and Hakjang basin was 18CMS and 25.25CMS.<BR>  4. Gamjeon basin"s quality was represented that maximum BOD concentration was 250㎎/L and Do concentration of Hakjang basin was 0.64~13.2㎎/L. Heavy metal concentrations of Eomgung area was over the guide line;Cd and Cr?? were estimated to be 0.1㎎/L and 0.197㎎/L.<BR>  5. It is clear that runoff load by urban non-point source pollutants plays important role in the control and management of non-point sources for the watershed.

도시하수 전처리를 위한 고속생물막 침전지의 특성에 관한 연구

강용태 ( Kang Yong Tae ),장성부 ( Jang Seong Bu ) 한국수처리학회 2003 한국수처리학회지 Vol.11 No.4

N/A It is not easy to find reasonable area for construction of wastewater treatment facility, and biological treatment such as a conventional activated sludge process can`t remove non-point source pollutant in initial rainfall, sufficiently. So if we use bio-physical treatment as pre-treatment and disinfection process, combined sewer overflows don`t cause significant pollution. First of all, we thought the site can be reduced by the reduction of HRT(hydraulic retention time). In this study, to reduce HRT of wastewater treatment facility, the rapid biofilter clarifier was cofigurated and its characteristics were analyzed according to the velocity of filtration and cycles of backwash. Specific characteristics of the rapid biofilter clarifier with 50 ㎥/d of volume were represented that Turbidity and SS removal rate was 30.2%, 30.9% respectively, and that of BOD and COD was 22.0%, 21.0% without regard to change of quality of raw water. By comparing the rapid biofilter clarifier and sedimentation of conventional activated sludge process with haveing 50㎥/㎡· of surface-loading rate and 2.0m of depth, we could know the rapid biofilter clarifier could reduce area of clarifier 11 times as much than that of conventional activated sludge process. Cycle of backwash was represented as 24, 18 and 24 hours when velocity of filtration was 222㎥/㎡·d, 333㎥/㎡·d and 555㎥/㎡·d, and BOD, SS biologically removed in the rapid biofilter clarifier was 342.80, 346.82 g/d, 258.08, 222.72 g/d, and 142.36, 136.52g/d respectively.

ASA공법을 이용한 Y하수처리장 시운전에 관한 연구

강용태(Kang Yong Tae),조용현(Cho Yong Hyun),장성부(Chang Sung Pu) 대한토목학회 2004 대한토목학회 학술대회 Vol.2004 No.10